回采工作面过老硐子技术谈

Discussion on Crossing Old Chamber at Working Face

通过对姚桥煤矿7521工作面过7517放水巷的分析,探讨了采煤工作面过老峒子的技术,在实践中取得了较好安全效益。

By analysis of crossing 7517 dewatering roadway at 7521 working face in Yaoqiao Colliery, the author probes into the technology of crossing chamber at mining face, which has achieved safety benefits in practice.