论文部分内容阅读
目前,我国许多煤矿的井下石门和大巷内的溜煤眼处于同一水平,有的还正对着溜煤嘴,致使人身伤亡事故频繁,迫切需要改进。
At present, many coal mines in our country have the same level of downhole coal shingles and coal-slip eyes in the lanes. Some of them are also facing coal-slip nozzles, resulting in frequent personal injuries and deaths and an urgent need to be improved.