金属矿地下开采试卷试题下载-样卷.doc（Metal mine underground mining - download papers volume.Doc）

金属矿地下开采试卷试 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 下载-样卷.doc（Metal mine underground mining - download papers volume.Doc） 金属矿地下开采试卷试题下载-样卷.doc(Metal mine underground mining - download papers volume.Doc) Metal mine underground mining - download papers volume.Doc The tenth chapter caving mining method I. thinking questions 1, what are the main measures to maintain the stability of the mining space by the single caving method? 2. Explain the distance of control roof, distance of hanging roof and caving distance, 3 pillar and caving method of longwall caving method 4, what are the stress concentration areas of longwall caving method? 5, explain: release ellipsoid, loosen ellipsoid, waste rock falling funnel Two. Explain and answer briefly 1. Compare the mining method and stoping method of long wall method and chamber and pillar method; 2, try to compare the longwall method and the comprehensive method of mining and mining methods; 3, the relation between the distance of ore crushing and the loss and dilution of ore drawing at the end is discussed; 4. The influence of size and shape of route on loss and dilution of sublevel caving method without sill pillar is discussed; 5, the influence of spacing and sublevel height on loss and dilution is discussed; 6, the influence of ore removal equipment on the loss and dilution of sublevel caving method; 7. What factors affect the loss and dilution of the sublevel caving method without sill pillar?; 8, what are the main problems in the sublevel caving method?; 9, with the sublevel caving mining and sublevel caving is what is the difference; The 10 pillar sublevel caving in what is the main program; 11, discusses the leakage distance on the ridge of the loss; 12, compared with floor pillar sublevel caving method and forced caving method; 13. What are the conditions for the application of sublevel caving method without sill pillar?; 14. Why does the sublevel caving method lead to the formation of overlying strata?; Three, knowledge mapping and mapping problems 1, drawing instructions at the bottom drawing rule 2, drawing drawing to explain the method of forming groove of sublevel caving method without sill pillar 3, draw drawings to illustrate the rule of ore drawing at the end 4, drawing that pillar sublevel caving method. The cutting groove is formed? Four, design problems 1, with floor pillar sublevel caving, mining depth of 600 meters, the thickness of 160 meters, at an angle of 55 degrees, ore f = 5-7, f = 6-8 rock The ore weight is 3.5 T / m3, and the stage is 80 meters high. The design and calculation of mining method are carried out, 2, there are ore level thickness of 70 meters, dip angle of 85 degrees, bulk density of 3.6 T / m3 Grade 52%, rock grade 35%, ore f = 3-6, with natural caving mining, stage 60 meters high, 15.5 meters bottom column, pull bottom height of 2.5 meters, ore block width of 50 meters, mining method design and calculation 3, the orebody thickness is 20-30 meters, the dip angle is 70 degrees, and the sublevel caving method is used to extract the ore. The ore volume density is 3.5 T / m3, and the surrounding rock mass density 2.6 T / m3, the adoption of vein mining, the vertical direction of the road, the stage 54 meters, 9 meters high, the distance between 10 meters, 50 meters set - pass, 150 meters, one person ventilation equipment wells, mining methods design and calculation 4, there is a vertical orebody thickness of 2 meters, dip angle of 15 degrees, ore f = 6-8, surrounding rock f=4-6, ore bulk density 2.8 T / m3, surrounding rock mass density 2.6 T / m3, longwall mining method, mining method design calculation. 5, sublevel caving mining, such as the diamond route layout, spacing and sectional height were 10 meters, ore f = 8-10, calculate the hole design, approach roadway 4.4 x 3.5 meters, with LHD ore production capacity of 300 tons / Bantai, mining calculation.