深部高应力巷道支护技术研究

Research on supporting technology of deep high stress roadway

针对原有巷道围岩变形大、巷道出现非对称破坏等问题,研究了原巷道变形破坏特征,主要表现为巷道支护破坏严重以及巷道出现非对称破坏现象,分析原因主要有煤层埋藏深、工作面超前支承压力影响大、巷道围岩强度低、支护不合理、两向不等压受力;对巷道锚杆直径、锚杆长度、锚杆间排距、锚索布置进行优化,并介绍了巷道非对称控制技术。研究为类似工程条件巷道支护提供了借鉴。

Aiming at the problems of large deformation of surrounding rock and unsymmetrical destruction of roadway,this paper studies the characteristics of deformation and destruction of the original roadway,which are mainly manifested in the serious destruction of roadway support and unsymmetrical destruction of roadway,the main reasons are the depth of coal seam,the great influence of advance support pressure of working face,the low strength of surrounding rock of roadway,the unreasonable support and the unequal pressure in two directions,bolt diameter,bolt length,bolt spacing and cable arrangement are optimized,and asymmetric control technology of roadway is introduced.The study provides a reference for similar engineering conditions.