论文部分内容阅读
分析了马兰矿 1 2 31 5工作面掘进巷道的破坏原因 ,提出了类似条件下工作面巷道支护应采取的对策 ,以促进矿井的安全生产
The reasons for the failure of roadway excavation in 1 2 31 5 working face of Malan Mine are analyzed and the countermeasures to be taken to support the roadway under similar conditions are put forward to promote the safe production of mine