This paper makes a systematical investigation into the excavation project of the haulage tunnel at -150m level in Yunjialing Coal Mine, Handan Mines Bureau.
就邯郸矿务局云驾岭煤矿- 15 0水平运输大巷施工工程作了系统性研究。
This paper makes a systematical investigation into the excavation project of the haulage tunnel at -150m level in Yunjialing Coal Mine, Handan Mines Bureau.
就邯郸矿务局云驾岭煤矿- 15 0水平运输大巷施工工程作了系统性研究。
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