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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。
Through the analysis of the 7517 drainage channel of the 7521 working face in Yaoqiao Mine, the technology of mining the old face of the old face in the coal mining face is discussed, and good safety benefits have been achieved in practice.