近距煤层下分层回采巷道支护与监测分析

Support and Monitoring Analysis of Mining Roadway in Lower Layer under Close Seams

近距煤层上层煤开采时,下部煤层工作面顶板受到上部煤层采动而产生变形甚至破坏,造成下部煤层开采过程中其顶板管理、巷道布置和支护、回采工艺等方面均具有一定特殊性。采用理论分析、数值模拟对平朔二矿下组煤层B1103首采面回采巷道进行了支护设计,通过现场监测分析验证了巷道支护的良好效果。

With the upper coal mining of close seams, subject to the upper part of the lower face roof seam coal mining and deformed or even destroyed, resulting in the lower part of its roof coal mining process management, roadway layout and support, recovery processes, etc. have certain peculiarities. Theoretical analysis, numerical simulation was used for the Pingshuo Ⅱ coal mine＇ B1103 first working face to proceed support design, good effect was verified through on-site monitoring and analysis of the roadway support.