市政道路防沉降球墨铸铁检查井盖安装方法

市政道路防沉降球墨铸铁检查井盖安装 方法 快递客服问题件处理详细方法山木方法pdf计算方法pdf华与华方法下载八字理论方法下载 防沉降球墨铸铁检查井盖安装方法 自调式-防沉降窨井盖框安装工法在解决窨井路框差作业中使用， 通过调换窨井盖框，旨在攻克窨井下沉后， 产生道路路框差的病害， 提高道路的平整度， 改善行车条件。 特点: 减去窨井砖墙立面80%的受力压强; 将窨井盖框与路面形成一个整体， 改变了窨井下沉而引起的窨井盖同步下沉的状况; 作业面小， 对交通影响小， 施工快捷方便，施工完成即可通车。 适用范围: 城市道路上部分公用事业管线井; 雨、 污水窨井的改造。城市道路上符合条件的公用事业管线井， 以及雨污水窨井的新建、 改建以及维修推荐采用此二种工法。 检查井盖、井圈的生产、质量、检验等均应按国家 GB/T 23858—2009检查井盖标准执行。所有井圈井盖应采用防盗、减震、减噪技术。 公司产品从原料检验、制芯、熔炼、造型、加工成型、后处理、承载试验等整个工艺流程有严格的控制程序，自动化程度高，产品质量稳定。 产品的各项技术指标完全符合本技术要求的要求，并提供铸件金相、机械性能 检测 工程第三方检测合同工程防雷检测合同植筋拉拔检测方案传感器技术课后答案检测机构通用要求培训 报告复印件。 本公司研发圆形密封井盖技术要求:承重面钢板厚度10mm,表面清晰注明“热”字样，内侧井型加强梁钢板厚度10mm，与底座单面合叶连接开关大于90度,承重面(带挡土圈)与密封面开关简易无卡涩。底座结合面车槽加耐温胶圈分别与承重面、密封面结合。密封面采用玻璃钢防腐材料，用不锈钢元宝螺栓拉紧。底座高度200mm立面钢板厚度20mm，底座与承重面平齐吻合。整体材质为Q235-AF平整光滑加工误差小于1mm，关闭后灌水试验无渗漏。抛光除锈后刷防绣底漆外涂沥青漆。 参考标准 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of EN1249-4 车用及行人用区域下水道盖板和人孔盖板的 设计 领导形象设计圆作业设计ao工艺污水处理厂设计附属工程施工组织设计清扫机器人结构设计 要求、检测、标记及质量控制标准 济南市城市道路各类地下管线检查井、井圈、井盖设计施工补充规定(2011 年版) 3 技术要求 3.1 材质要求 3.1.1 采用球墨铸铁的三防(防沉降、防响动、防盗)井盖材料须符 合国标 QT500-7 的要求，球化率大于 90%，球化级别达三级以上。 3.1.2 防震响橡胶垫圈应具有较好的耐磨损、耐腐蚀、耐油、耐环境 温度,10?,70?。垫圈应确保在 10 年内不脱落、不老化失效，符合使用要求。 3.2 构造尺寸 3.2.1 检查井盖表面应有防滑花纹，D400、E600、F900 的高度为 4mm, 8mm，凹凸部分面积与整个面积相比不应小于 40%，不应大于 70%。 3.2.2 铰接井盖仰角不应小于 120 3.2.3 嵌入深度 ?50mm。当检查井盖设有锁定装置时，井盖的嵌入深 度可不受该条的限制。 3.2.4 井盖关闭后与井框之间允许高差为?1.5mm。 3.2.5 总间隙 ?6mm。 3.2.6 井座支承面宽度 ?24mm。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 城市道路防沉降雨水箅子 技术要求 一、功能要求: 球墨铸铁平入式雨水收集口弹性自锁篦井框盖 用途:适用于车行道两侧侧石右边平入式雨水收集口。 功能要求:具有弹性自锁、防盗、安全、排水、防滑便利等性能，使用的原 材料为球墨铸铁，带有预制 C40 砼座。 二、主要技术参数: 球墨铸铁平入式雨水收集口弹性自锁篦井框盖 1.适用球墨铸铁平入式雨水收集口弹性自锁篦井框盖:格栅-600*400. 支 座-750*500*80 净开口 600*350*700mm; 2.所使用的原材料应为球墨铸铁，自锁性能达到防盗、防跳动、防震动、 防位移及支座撞击发岀的响声，其抗拉强度应大于 500-1100N/mm、延伸 率为 2-15%、除此之外还应符合 QT500-7/欧标 GGG40-50 的规定; 3.承压能力应 ?250 kN; 4.井盖与支座间的缝宽 a:4mm?a?10mm; 5.井支座支承面的宽度应 ?20mm; 6.井盖的嵌入深度应不小于 40mm; 7.井盖表面应有凸起高度应不小于 3mm; 井盖与支座表面应铸造平整、光滑。不得有裂纹以及有影响检查井盖使 8. 用性能的冷隔、缩松等缺陷。不得补焊; 9.井盖与支座装配结构尺寸应符合 GB/T 6414-1999 的要求。其公差等级应 不低于 GB/T 6414-1999 CT10 的规定并保证井盖与支座互换性; 10.井盖接触面与支座支承面应进行机加工，保证井盖与支座接触平稳，预 制的钢纤维砼基座强度应不小于 C40; 11. 井盖上应根据采购人要求清晰标明字样、图形; 12. 除上述各项指标外竞标产品还应达到《铸铁检查井盖》; (CJ/T3012-1993)、欧盟 EN124 规定的其他要求; 13. 其叧外应达到排水性能好、防滑性能好、破损维修安装方便要求。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 昨日，记者在银通街看到，更换了的沙井盖表面的防滑纹路更密更深，而周围的道路也不需要做太大的开挖，安装起来更为方便。据市建设局市政维修处工程师李颖林介绍，以往的钢纤维沙井盖安装时需要封路4-5天，对于繁忙的银通街来说，给交通造成的影响太大。此外，银通街附近工程较多，大车经过，沙井盖被损坏的情况非常严重，整条街平均“一天要换4处”。以往的沙井盖也存在安全隐患。“容易松动，前一辆车开过，沙井盖弹起，对后面的车造成影响，由此也产生路面噪音。”据悉，近期银通街已经发生3起因为沙井盖问 题 快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题 引发的事故。 新型的 “自调式防沉降井盖”只需要4个小时就能安装好，承重能力是传统沙井盖的2倍，独特的刚性弹簧既能固定沙井盖，又能防止噪音，还能防盗，且可重复使用。目前，我市只是在银通街使用新型的沙井盖，如果效果好，会在全市推广。 自调式盖板的安装 随着重型车辆行驶的日益增多，致使窨井的损坏显著增多，为了保证路面的平整，常规检修是非常必要的。 最普通的窨井损坏的例子就是下陷的井盖和损坏的路面。 不管用什么材料和结构，传统的窨井盖的框会直接把来自上方的手里垂直传到施工井框架上，在不断受到压力和冲击后，铸铁的框与施工井之间的泥灰层就会被压碎。 自调式盖板的优点 1、对窨井减压达到了50%以上。 2、井盖与路面表层组成统一整体。 3、在外部压力作用下，井盖会自动随路面升降，使其与路面保持在同一水平面上。 ECON SN自调式窨井盖提供了全新的方法来解决传统窨井盖所出现的问题。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 使用自调式窨井盖后可以避免发生井盖突出和凹陷的现象，延长了维修周期，从而大大降低了维修费用。同时，路面需要维 护时，窨井盖也可以拿出来并重新安装。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 普通结构井盖在使用一段时间后，出现黑眼圈的现象，而防沉降井盖可以做到避免黑眼圈现象的出现。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of ?车过不震的自调式防沉降球墨铸铁防盗井盖 新式井盖与老式井盖对比 井盖通体黑色，正面采用防滑设计，井盖镶嵌入路面后，和沥青路面融为整体。现场施工人员称， 井盖反面借用七角形蜂窝造型，辅以7道加强筋，再增加3个钢片弹簧，解决了过去老井盖易弹起脱落的 难题，还具有防盗作用。防噪方面，则在内镶了高强度橡胶条，避免了“车过留声”。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 井 盖安装图 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 市政处有关负责人介绍，我市现用的沙井盖主要有钢纤维井盖和铸铁井盖，前者在日常清疏作业时容易损坏，后者则由于“废铁”收购价格高，被盗严重。城区富华道、悦来南路、东明路等三条城区主干道正是井盖受损的“重灾区”。 与上述两种沙井盖相比，新的防盗球墨铸铁井盖具有防噪音、防沉降、防盗的好处，且维护成本低。一旦需要抢修，也只要铺点沥青，几个小时就可恢复使用。同时，由于新沙井盖改造几乎是“立等可用”更换期间不会对沿线道路交通造成大的影响。 值得一提的是，虽然这种新型沙井盖的设计具有先进的“三防”功能，但其材质本身却不甚值钱——由于是多种材料合成，其含铸铁的成分比普通沙井盖小得多，因此重新回炉使用价值较低，小偷光顾起来将不太“划算”。 记者了解到，此前城区银通街已于2008年试用了这种新型沙井盖，使用后基本无损毁、无被盗现象发生。记者日前路经银通街时看到，车辆即便以较快速度轧过沙井盖，也不会发出普通井盖那种“铿、铿”的声响。而且，井盖和路面的覆合度非常好，材质与沥青路面相近，看上去十分平整，更没有井盖凹陷、移位等现象。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 防沉降井盖的设计 摘 要:本文从工程技术和建设管理角度分别对检查井沉降的成因以及检查井病害的防治对策进行探讨。同时，介绍了在施工及道路管养过程中的一些新工艺、新技术和新设备，以期为解决道路检查井的沉降作参考。 1 概述 城市道路是城市各种基础设施的载体，城市道路构成城市骨架，是城市的交通大动脉。城市道路路面下埋设有各种管线设施，如雨水、污水、给水、燃气、通讯、电力管线等。路面上存在这些设施的检查井，是城市道路区别于公路的最大特点。在城市道路系统中，常见的有雨水检查井、污水检查井、通讯检查井及电力检查井等多种检查井。 2 我市城市道路检查井现状 截止2009年底，无锡市城四区城市道路总里程达568km，根据GB50014-2006《室外 排水设计 规范 编程规范下载gsp规范下载钢格栅规范下载警徽规范下载建设厅规范下载 》，检查井设臵的最大间距见表1，雨、污水管道按管径为1000mm管道的最大间距设臵检查井，检查井的数量也将达到7107个。我市多为软土地基，城市道路检查井沉降状况非常普遍。譬如，学前东路,中山路——解放东路,一段不到700m的道路上的检查井很多都有沉陷，出现了众多的“肚脐眼”，在红绿灯路口这种现象更加突出。大多数城市道路的破坏是从检查井的沉降开始并延伸的，主要表现为井圈凹陷、井圈边缘路面损坏，井盖颠簸、跳响，井盖周围路面凹陷、开裂。道路检查井的管养工作势必耗费大量的的人力、物力、财力。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 图1 井圈边缘路面损坏 图2 井圈周围路面凹陷开裂 这些路面上的“肚脐眼”不仅影响城市的美观，还会带来很多问题。一是行车安全。检查井沉降会造成路况变差，导致不同程度地出现“跳车”现象，产生不安全感和不适感，降低道路交通功能，减小流通速度，造成机动车拥堵。特别是当电动车行驶速度较快时还会造成人车颠覆，发生严重的交通事故，给行车安全带来很大隐患。二是噪声污染。车辆经过检查井时会产生很大的噪声，直接影响到周边区域居民的生活质量。特别是在晚上，噪声严重影响居民的休息。三是管理问题。数量庞大的检查井沉降会造成较高的维护费用。 表1 检查井最大间距[1] 管径或暗渠净高 最大间距,m, 污水管道 雨水,合流,管道 ,mm, 200~400 40 50 500~700 60 70 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 800~1000 80 90 1100~1500 100 120 1600~2000 120 120 如何有效解决检查井的问题，减少检查井病害的发生是很多部门都十分关心的问题。由于大多数城市道路的破坏是从检查井的沉降开始的，故本文对检查井沉降的成因以及检查井病害的防治对策进行探讨。 3 检查井沉降的原因分析 引起城市道路检查井沉降的原因有很多，以下将从工程技术角度和建设管理角度分别进行探讨。 3.1 工程技术方面 3.1.1 检查井自身结构的影响 我市现有检查井一般采用的是砖砌检查井，基础采用混凝土底板，混凝土底板基础是刚性体系，变形量小，与四周的路面结构刚度不一致，如果在施工过程中检查井周围部分管槽回填密实度未达到要求或检查井基础垫层处理不好，造成道路通车后沿井周围出现裂纹甚至凹陷现象。 另外，不合理的井圈结构，使竖井壁直接承受大部分车轮压力。传统的井圈结构大多为圆柱形结构，车轮的冲击力通过井圈直接作用在竖井壁上，而强度好的面层混凝土几乎不承担任何分力。在车轮的长期反复冲击振动作用下，加上竖井自身的重量，必然造成竖井逐渐下沉。井口承重独立于面层结构，造成车轮对竖井的“打桩”式效应。如果井圈盖与井身连结不实、井圈与井身之间未固结接触不密贴，井圈跳动也将导致检查井周边路面的损坏。 3.1.2 施工工艺的影响 传统的道路施工工序安排方法，是把检查井标高的调整工作放在面层结构摊铺之前进行，即按n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 道路的设计标高先设定每座检查井的顶面标高。由于测量工作会有一定的误差，在调整井座高程作业中也会产生一定的误差，再加上面层摊铺作业时的实际高程与设计高度的误差，很难做到检查井高程与路面高程一致达到平顺衔接。当检查井的标高高于路面标高时，又会因井周的路面得不到充分碾压而影响道路质量[2]。 这种先砌筑检查井后铺道路面层的施工工艺，还会使井口周围路面的密实度与其它大面积处不一致，容易造成应力集中，产生裂缝，遇到雨天，雨水沿裂缝下渗到路面结构层，在车轮的反复冲压揉搓作用下，加速检查井的下沉。 3.1.3 行车作用的影响 道路路面主要承受车辆活荷载的压力、剪切力和冲击力，当车辆驶过检查井时，除车辆自身的重力作用外，由于检查井盖座与沥青路面材料的物理性能差异和检查井盖与路面的高差，行驶时将会对检查井产生冲击荷载，并对周边路面产生较大的剪切应力，车辆荷载的冲击力会加剧检查井的下沉，而剪切力的加大则加剧了周边路面裂缝的形成[3]。井框周边路面一旦产生裂缝，雨水就会顺着路面裂缝和路面与检查井结构处进入检查井基础，导致井底地基含水量增大，强度降低,裂缝也会使井盖座框与检查井井座接合部,包括砖与砖之间,受损的砂浆层随雨水流失，从而又加剧检查井的下沉。 3.2 建设管理方面 3.2.1 规划原因 我们知道，减少机动车道上检查井的数量，将检查井布臵在道路分隔带或者慢车道上，能够有效防止检查井的损坏，因为这样可以避免机动车对检查井的碾压。但是，检查井的平面布臵是按照城市的地下管网体系综合考虑的，地下不仅有雨污管道，还有给水、燃气、通讯、电力等管线，检查井不可能每次都在一个固定位臵上，布臵在行车道上也就在所难免了。另外，在城n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 市道路规划中也不可能在有限的城市空间内单独划出一块专门布臵各种地下管线，只能布臵在道路路面以下。地下管网规划的合理与否直接影响检查井的分布，进而决定检查井的完好状况。因此，道路路面之所以出现 “肚脐眼”，与不够合理的城市规划不无关系。 3.2.2 设计原因 设计者在设计检查井时，主要根据雨水管的管径以及维修、疏通等方面来确定检查井内径,根据管道埋深、承载力，确定井室材料规格、砌筑砂浆强度以及混凝土强度，并且基本选用国标及省标标准图集。这就造成对管道与井室、井室顶面与井盖、井盖与路面连接的过渡方面考虑较少。 检查井由给排水专业进行设计，单独于道路的路面设计，客观上造成检查井独立于路面，与路面结构在承载力、刚度的不一致性。当检查井基础及本身的承载力、刚度较强，周边路面较差且不足以承受荷载时，检查井的盖座明显高出周围路面，对行车安全造成隐患。反之，当检查井基础及本身的承载力、刚度较差而周边路面较强时，检查井会相对于路面下沉,当周围路面得承载力同样较差时，检查井会与其周围更大范围内的路面一起下沉，导致路面破坏。 3.2.3 施工原因 我市地处长三角地区，多为软土地基，含水量大且水位较高，是一般施工中都会遇到的。如果在施工中降水不理想，清底、清淤不够甚至带水作业，会直接导致底层土基和混凝土垫层不实，必然产生井身下沉。 在路基施工中，检查井周边的回填质量不达标，在交通荷载反复作用下，就会首先发生逐渐沉降，检查井将会像一个个“树桩”暴露于路面，在车辆车轮作用下，也会造成检查井的下沉。 另外，我们在检查井中设臵卸荷板的目的是要防止基坑回填土下沉引起路面损坏。但客观上只起到改善和缓解下沉的作用，没有根本上解决。主要原因是:施工单位误解有卸荷板就能解决n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 一切，基坑回填更加马虎。卸荷板实际上是悬臂板而不是简支板，但受力钢筋却布臵在板的底部，使用过程中回填土方下沉导致卸荷板受力状态发生变化，导致路面损坏。 3.2.4 管养原因 管道长期使用，管道疏通和维护不到位，管道内垃圾杂物淤积，汛期雨水出水口淹没于河道水位以下，这些都会造成检查井内水位上升，甚至出现雨水、污水外溢等情况，使检查井的基础和路基浸泡在水中，强度降低，在车轮的反复冲压揉搓作用下，发生检查井下沉的现象。 4 利用新技术、新设备解决检查井沉降问题 解决检查井沉降问题无非是从规划、设计、施工、管养等四个方面进行考虑，但是对已建成道路，我们无法改变规划、设计和施工过程，只能在最后一个环节上做文章，利用新技术、新设备,对新的改拓建道路还要考虑新工艺,对检查井各组成部分进行更换、维修。下面将从管养的角度，简要介绍一下国内外的新工艺、新技术和新设备，为解决道路检查井的沉降作参考。 4.1 我市利用新型井盖情况 我市在中山路采用的是沧州久耐金属制品有限公司制造的可调式盖座,上海市也在部分区使用了类似的产品,，这种盖座通过预设的螺栓,三个或四个,升降盖座的高度，找平路面标高，达到恢复检查井井盖平整的效果。但是这类装臵设计大多比较精巧，需要高质量的维护，在客观的使用条件下，调节过程和效果不如预期，在我市及上海市使用效果均不是很理想。 图3 可调式井盖 4.2 国内其他城市主要做法 解决检查井沉降问题各地都有自己的一套办法。北京、上海采用“大盖板”，即井圈周围浇筑n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 钢筋混凝土卸荷板来解决沉降问题,沈阳市市政工程养护管理处设计了《检查井灌浆安装法施工工艺》，并作为专利进行推广，方法是先摊铺道路面层，以面层标高为基准调整检查井标高，能够做到精确调整安装高度、采用高强度灌筑砂浆实现井座井筒高强度连接，有效地解决了井周路面的下沉,上海市市管处组织相关单位和人员编制了《自调式-防沉降窨井盖框安装工法》，并通过了专家评审，采用自调式防沉降T型断面盖座代替传统L型断面盖座，使盖座镶嵌在密实的路面结构上，与路面结构融为一体，所受荷载呈一定分散角度扩展到周边路面结构上，这种散压能力能够达到80%。压力小了，检查井自然就不容易下沉了。此外，新型的检查井在井框与井盖之间增加了防噪音的橡皮圈，还增加了三个弹簧锁，将井盖牢牢锁在井框上，既能防噪音，还能防震动，改善了车辆行驶质量，取得了良好的社会效益。 新疆交通科学研究所的王增学、张西农改变传统的圆柱形井圈结构，将井圈做成倒锥形，由于锥面面积较圆柱形底部环形面积大，且车轮压力的大部分被横向分解到了面层结构中，向下的纵向分力也主要由面层结构承担，从而使得竖井壁受到的冲击力大大减轻，井口沉降几乎被完全消除。 图7 改进后的锥形井圈结构 图6 传统的井圈结构 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 4.3 国外主要现状 4.3.1 新型防沉降井盖 在市政设施管理和技术研究方面，德国和日本应该说是当今世界上做得较好的国家，尤其是德国推出的一些新产品、新设备，如德国新型防沉降井盖、德国斯蒂尔,STEHR,路面井孔钻机，能够较好地解决检查井的沉降问题，具有很强的推广性。目前，合肥、太原、宜昌等国内城市正在尝试试用这种新型防沉降井盖。该防沉降井盖边框比平常的宽，使得井盖承载面积加大，受压强度减小。井盖可插入砖砌检查井筒中，减少了井盖推移，避免井周围松动，以达到井盖与路面齐平。另外，井盖还设有胶条和锁，具有减少噪音和防盗作用。 4.3.2 德国斯蒂尔,STEHR,路面井孔钻机 德国斯蒂尔,STEHR,路面井孔钻机可以用于新路面修筑时路面井孔的先铺后开孔施工，即在面层进行整幅摊铺、压实之后，用该井孔钻机钻孔，取芯，固定井圈。该钻机也可用于旧路面井圈沉降、歪斜和周围松散裂缝的修复，还能用于路面局部松散、龟裂、拥包等病害的铣削修复作业[5] n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 图9 斯蒂尔,STEHR,路面井孔钻机 1.利用斯蒂尔,STEHR,路面井孔钻机改变传统施工工艺 现行的检查井施工工艺是先将井口预砌到路面标高，路面分层摊铺压实后再将井口周围填埋夯实。这种工艺的最大缺点是难以保证井口周围路面的密实度及平整度，影响路面整体铺装进度。之所以这样做的主要原因是先摊铺压实再开孔的工艺难度更大。 利用新技术、新设备——斯蒂尔,STEHR,路面井孔钻机可使这一问题迎刃而解。斯蒂尔,STEHR,路面井孔钻机为一大口径路面取芯机，是装配于轮式挖掘机、装载机、随车吊、多功能养护车、滑移式作业机等主机上的一个装臵，动力由主机提供，全液压驱动，质量约840kg，钻筒直径为430~1410mm，钻孔深度300mm，钻孔时间1~3min，钻头磨损后可快速更换，工作时无需水冷。另外，钻机还配有中心模规、取芯器、灰渣接盘、井圈调节器、钻筒外附加平台削头、钻筒内附加平台铣削头和钻筒外附加锥形铣削头等附件。该钻机可将面层结构在3min之内钻出一个300mm深，最大直径达1400mm的混凝土芯。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 先铺层后开孔的工艺为:在路基铺装完毕后，将井口用一圆形盖板罩住，然后将路面之底基层、粘结层、面层逐一整幅摊铺压实。按事先在路缘石上作的标记准确找到井口中心位臵，用该钻机来钻孔取芯。然后延长竖井壁，放臵、调平、固定井圈，则一平整漂亮的井口施工完毕。这样不但解决了井口周围的密实度及平整度问题，而且还大大提高了路面整体施工的进度。 2.利用斯蒂尔,STEHR,路面井孔钻机修复沉降检查井 沉降检查井井圈的传统修复方法是用切缝机在沉降裂缝边沿切出一矩形围缝，再用风镐或液压镐凿除沥青混凝土料，取出井圈后再重新固定上。这一传统方法不但费工费时、进度慢，而且修复质量及外观效果也不尽如人意。 利用斯蒂尔,STEHR,路面井孔钻机修复沉降检查井井圈的方法是:首先，将灰渣接盘固定在井圈下方，选择内径比井圈外径大10,20mm的钻筒，用附件中心模规划线，使钻筒对准检查井的中心位臵, 不到3min即可钻出井圈。对于检查井周围的松散裂缝，可在钻筒外附加平台铣削头，在钻出井圈的同时，将检查井周围损坏的路面铣出一个圆形平台。清理灰渣，校正井圈位臵，灌浆密封。如有圆形平台，则要涂粘结沥青，粘烧密封带，填充沥青混合料，用夯板压实。 3.为配合新锥形井圈[4]的安装固定，需要将井圈做成相应的倒锥形状，利用钻机钻筒外附加锥形铣削头，在钻取新井口或旧井口取井圈的同时，将井口加工成锥形形状。解决了该问题后，就能容易地臵换井圈了。 对于新建道路，通过斯蒂尔,STEHR,路面井孔钻机改变检查井传统施工工艺以及井圈结构后，可基本上解决新建道路检查井的沉降问题,对已建成道路检查井的沉降问题，也可用斯蒂尔,STEHR,路面井孔钻机进行快速修复，并能够保证较好的平整度和圆滑美观的外形。从管养角度看，该钻机具有很强的实用性。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 5 结语 从以上论述可以看出，检查井沉降问题不仅是一个管养问题，它牵扯到规划、设计、施工、管养等四个方面，只有规划、设计、施工这些前期工作做好了，沉降问题才能得到有效的解决。如果前期工作不到位，必然给后期的管养工作带来难度。因此，只要我们重视前期各环节的工作，同时在施工以及管养过程中重视利用新工艺、新技术、新设备，就能够较好地解决马路“肚脐眼”这一市政顽疾。 自调式球墨防盗排水井盖安装的使用简介 作者:河北沧州久耐金属制品有限公司 时间:2011-2012年度 摘 要: 分析了城市排水井盖出现病害的成因, 探讨了自调式球墨铸铁井盖的原理, 阐述了自调式球墨铸铁防盗井盖的优点及施工工艺,指出自调式球墨铸铁盗排水井盖有效地杜绝了井盖出现松动、 下陷等病害,确保了路面的平整和车辆行驶的安全。 关键词:自调式球墨铸铁防盗排水井盖, 原理,工序,流程 随着社会的快速发展, 城市道路的交通流量越来越大, 导致市政道路排水井出现松动、下沉、坑洞和噪声大等病害, 直接给车辆行驶带来隐患, 而随着社会的发展市民对城市道路平整度要求越来越高,两者之间存在突出的矛盾, 为有效解决这个问题, 根据市场要求，我公司设计部对现有的多种球墨铸铁防盗井环盖进行多次试验,决定对排水检查井环盖进行全面更换改造, 采用新型的强度高、 性能好的自调式球墨铸铁防盗井盖替代旧式井盖, 以提高市政排水井的防盗性能和行车路面的平整度。 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 1、城市排水井环盖出现病害的成因分析 在日常管养和实地调查中发现, 目前造成城市道路排水井出现松动、下沉、 坑洞和噪声大等病害的主要原因是排水井环盖与井身结合部位为砂浆层承载力较弱。随着日益增长的交通流量荷载的反复冲击,这些砂浆结合层就出现碎烂,导致这个井环盖出现松动、 下沉、倾斜等病状,严重时导致成片道路出现沉陷现象。 2、自调式球墨防盗排水井盖的原理 为能有效地解决日常排水井盖结合部位砂浆承载力薄弱这一问题,自调式球墨防盗排水井环盖通过扩大井盖与井身结合面, 将来自井盖上部的压力分散到道路的表面, 减少排水井自身受到的承载力,提高自身抗破坏能力, 从而保证整个排水井的完好和道路的平整,其主要原理见图 1。 3、自调式球墨防盗排水井环盖的其他优点 自调式球墨防盗排水井盖不仅能有效解决受力荷载问题,而且还有其他一些优点,具有轻松而人性化设计的开启结构和方便垃圾清理设置。 4、 自调式球墨防盗排水井环盖施工工艺总流程 施工前准备?砌缝?拆除旧有检查井环盖?对井口及工作位进行拓宽加深?安装混凝土调节环?安装铸铁框(模) ?填充沥青料?调整井环盖板?振压沥青及井盖板?完工开放交通。 5、 自调式球墨防盗排水井环盖的实际应用及具体工序的施工技术措施 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 作为一种新技术新产品, 我处于 2008 年 7 月份在广州市江南大道进行实地操作施工,各工序施工的具体措施如下。 5. 1 施工前准备 先安排小货车及作业人员装运施工护栏、 反光锥筒、 车辆导向牌及小型机具到施工现场进行对作业点围蔽等; 其次, 安排其他大型机械(压路机、 沥青养护车、 井环吊装车及泥斗车等)进场,到现场后,尽量安排施工机械停放在护栏后面或与施工作业点同一车道,以免造成交通堵塞。 5. 2 施工砌缝 围蔽后安排两人先以井中心为圆心, 根据井环盖板尺寸( 最大部分直径为 0. 9 m) 外径周边出 0. 2 m, 确定开挖沥青的工作范围( 直径为 1. 3 m) ,划一道弧形线, 然后用砌缝机(刨路机) 沿弧形线进行砌缝,砌缝深度必须大于 5 cm。 5. 3 拆除旧井环及沥青路面 砌完缝后, 安排三人用井环吊装车的风镐打掉旧井环及工作位内沥青或混凝土,同时将余泥装入泥斗车运走。注意事项: 开挖时应尽量避免撬动周边的沥青路面, 如施工时余泥掉入井内,完工后要及时清走。 5. 4 对井口及工作位进行拓宽加深 如发现井身砖墙松动部分, 必须清理将旧井环及工作位内沥青或混凝土清除干净后, 拆除, 然后用水将井口基底部清冼干净,除结构要求厚度(路面到混凝土调节环面层距离为 12 cm~ 16 cm+混凝土调节环厚度)外, 超出部分深度, 采用砂浆砌筑灰砂砖进行调平,确保整个工作范围内开挖深度与路面距离保持一致。 5. 5 安装混凝土调节环 根据调平后基底与路面距离, 在检查井基底面先抹 2 cm 厚砂浆, 然后选择合适的混凝土调节环固定在砂浆面上, 要确保路面至调节环表面有足够施工调节距离, 为 12 cm~ 16 cm 之间, 混凝土调节环安装必须平稳、 无松动等现象。注意事项: 选用适当的混凝土调节环是非常重要的环节, 它起到固定安装框(模) 作用,又能避免井盖板安装的过程中对整个检查井进行结构调整,同时检查调节环高度是否能够满足施工要求。 5. 6 安装铸铁框(模) 混凝土调节环安装完后,再将铸铁安装框(模) 有铰链位置垂直并朝人行道方向套进调节环中,安装平稳,同时检查铸铁安装框 ( 模) 的底部是否对准调节环内进行安放。 5. 7 填充沥青料 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of 铸铁安装框( 模) 固定好后, 在进行填充沥青料前, 先将工作坑内清扫干净,然后均匀淋洒沥青透底油, 以增加沥青与原结构的粘贴力,填充沥青时, 要用打夯机分层夯实,确保密实度达到有关要求,沥青填充料高度与铸铁安装框( 模)顶面要保持一致。注意事项: 为避免沥青填充料掉入检查井内, 施工时先用盖板将安装框(模) 井口盖上。 5. 8 调整安装框(模)及井盖板 当填充沥青料与安装框(模) 高度一致时,在原路面顶层升高2 cm 横跨安装框(模) 拉一根线,用带钩工具将安装框(模) 调升到与线高度持平,作为摊铺沥青高程( 松铺预高范围) , 同时填充沥青料与其持平,完成后,小心取出安装框( 模) ,再将井盖板放入预制好的结构中安装平稳。注意事项:井盖板安装时,铰链位置与预制结构相互对应, 方向摆放正确,选用相应匹配(雨水或污水字样)的井盖进行安装。 5. 9 振压沥青及井盖板 用大型压路机( 12 t 以上) 将井盖板及周边沥青填充料来回振压,使井盖板与沥青填充料合成一体并与原路面持平即可。注意事项: 沥青材料应与原路面材料保持一致, 沥青料摊铺温度必须达到规范要求, 振压时要有专人指挥,同时注意井盖板有无偏移、 损坏。 5. 10 完工开放交通 完成振压沥青及井盖板后, 及时将井盖表面及周边清理干净,待沥青混凝土冷却后, 再搬开护栏开放交通。 6 结语 通过实际施工发现, 自调式球墨防盗排水井盖通过将井环盖井框的下部与排水井的内壁紧密结合,能有效的将井盖的大部分荷载传递到道路的路面上,大大减少排水井环盖出现受力损坏的概率,有效地杜绝井环盖出现松动、 下陷等病害,确保了路面的平整和车辆行驶的安全。 2014年8月20日15:16:34于长福工地 n the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabinets (well). Engine room placed inside the Cabinet, IDF placed a standard 40U cabinets for installation of network and wiring devices, management computer and telephone information. Cabinet distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45-RJ45 soft jumpers for network devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabinet) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabinets. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable; L1: MDF cable allowance; L2: other allowances S1: minimum horizontal cable length; S2: maximum horizontal length of cable; Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]+2.5+1=62.5 m; Total length of 62.5 m x792 = 49500-meter in each box (KFT) by 300 meters per carton; The twisted-pair cable box you want = 49500 ? 300=165 (KFT); losses not included, each about 15 meters. Metal line slot, and metal line tube of