大同煤矿集团公司高档采煤工作面采用切顶墩柱的可行性论证

The Feasibility of Roof-Cross Breaker Prop in High-Grade Mining Face

在分析大同煤矿集团公司高档采煤工作面存在问题的基础上 ,对切顶墩柱的应用做了研究 。

On the base analysing the existing problems in the high*.grade mining faces in Datong coal group,the application of roof*.cross breaker prop was studied,and its economic benefit was shown.