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- near distance coal seam group 近距煤层
- mining of closed distance coal seam group 近距离煤层群开采
- 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
- Analogy Simulation Research on Mining of Closed Distance Coal Seam Group of Qianjiaying Coal Mine 钱家营近距离煤层群开采的相似模拟研究
- The example of the large dip angle and the coal seam group is the Yuexu area in Tangshan Mining Filiale. 大倾角、煤层群采煤设计以开滦唐山矿业分公司重点衔接区域岳胥区-680水平采区为设计对象。
- coal seam group with near interval 近距离煤层群
- 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。
- 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;
- coal seam group with close quarters 近距离煤层群
- 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 Method under Coal Pillar in Close Distance Coal Seam 近距离煤层煤柱下的开采方法
- Design on the caving of the large dip angle coal seam group 大倾角煤层群采煤设计初探
- Study of floor water hazard controlling for steep A coal seam group mining 急倾斜A组煤层开采底板岩溶水水害防治研究
- STUDY OF MINING OF GENTLY-INCLINED COAL SEAM GROUP IN ASCENDING ORDER 缓倾斜煤层群上行开采的研究
- You can see the river in the near distance and the mountain beyond. 从这里可以看到近处的河及远处的山。
- coal seams group at close quarters 近距离煤层群
- Persistenc, hope is waiting for you in the near distance. 坚持,希望就在不远处等你。。
- 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
- You can see the river in the near distance and the mountains beyond. 从这里可以看到近处的河及远处的山.
- Bias W-type Ventilation in Short-interval Coal Seam Group Face and Its Application 近距离煤层群工作面的偏W型通风方式及其应用