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- According to the working practice in Southern 3 Malan mine ,analyzes the selecting method of digging position which is in the lower seam of short distance coal seams. 结合马兰矿南三采区施工实践经验,分析了近距离煤层下层煤巷道开掘位置的选择方法。
- Selecting Method of Digging Position which is in the Lower Coal Seam of Short Distance Coal Seams 近距离煤层下层煤巷道开掘位置选择
- Application of Research on Distributing Discipline of Abutment Pressure At Combined Mining Among Short Distance Coal Seams 滞后支承压力研究在近距离煤层联合开采中的应用
- Study on Surrounding Rock Supporting Pressure of Floor Roadway During Short Distance Coal Seam Combined Mining 近距离煤层群联合开采底板巷道围岩支撑压力研究
- short distance coal seams 近距离煤层
- Under the condition of close distance coal seams ascending mining in Suncun coal mine, using RFPA numerical analysis software, we analyzed the stress environment of the upper coal seam. 采用RFPA数值分析软件，对孙村矿深部近距离煤层上行开采条件下，上位煤层回采巷道的应力环境进行了分析；
- Under the condition of close distance coal seams ascending mining in Suncun coal mine,using RFPA numerical analysis software,we analyzed the stress environment of the upper coal seam. 结合覆岩导水裂隙带的观测结果,探讨了上位煤层回采巷道的稳定性,证明上行开采条件下上位二层煤的回采巷道稳定性较下行开采有较大的改善;
- mining of closed distance coal seam group 近距离煤层群开采
- The British line was forced back a short distance. 英军的阵线被迫后退一段距离。
- Mining Method under Coal Pillar in Close Distance Coal Seam 近距离煤层煤柱下的开采方法
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- Keywords close distance coal seams;goaf;forecast model;model resolving;spontaneous combustion; 近距离煤层;采空区;预测模型;模型解算;自然发火;
- He heaved heavily after a short distance running. 没跑几步，他就气喘吁吁了。
- Walk a short distance back and there you are. 往回走一点，然后就到了。
- The first salvo exploded a short distance away. 第一批投下的炸弹在不远处爆炸。
- Coal seams intermixed with iron ore . 煤层和铁矿混杂在一起。
- Fifty kilometres isa short distance by air. 乘飞机五十公里不算远。
- Roadway layout of outward intervening mining mode striding over the transportation tunnel in near distance coal seam 近距离煤层采用跨越运输大巷外错式开采的巷道布置
- These brakes stop a car within a short distance. 这些制动器在短距离内能把车刹住。
