煤巷非对称破坏与支护设计探讨

Discussion on Asymmetric Failure and Supporting Design in Coal Roadway

本文以新大地煤业东四正巷为实例,对煤巷非对称变形机理和变形破坏特征进行分析;探讨设计出一种有效的非对称支护方案;进行支护方式改进后,该巷道围岩变形量得到了有效控制,顶底板移近量降低了21.4%,两帮变形量降低了51.3%,支护效果良好。

By analysis of asymmetric deformation mechanism and failure characteristics in coal roadway of Xindadi Coal Industry Co.,Ltd.,the author proposes an effective asymmetric support scheme,which can effectively control the surrounding rock deformation with roof and floor displacement decreasing by 21.4%and deformation of two sides by 51.3%.