高应力区卸压巷道合理位置及卸压效果试验分析

Reasonable Position of Pressure Relief Roadway in High Stress Area and Test Analysis of Pressure Relief Effect

摘要: 针对姚桥煤矿中央采区集中下山巷道受矿压影响变形严重的问题，设计专用卸压巷道，并通过相似材料模拟分析卸压巷道的卸压效果。结果表明：7011采空区上部岩层裂缝形成一条基本连贯的抛物线，并且与卸压巷上方的岩层相贯通，卸压巷顶板和两帮都有较大的变形，但对集中下山的影响较小，卸压巷有效释放了采区压力；卸压巷设在距离7011停采工作面40 m处是比较合理的，可以有效地保护轨道下山；此外，让压煤柱所承受的地应力较大，应留设足够的宽度的煤柱。

Abstract: In view of the serious deformation of the centralized downhill roadway in the central mining area of Yaoqiao Coal Mine affected by the mine pressure, a special relief roadway is designed and the relief effect of the relief roadway is analyzed through the simulation of similar materials. The results show that the fractures in the upper part of the 7011 goaf form a parabola which is basically continuous and connected with the strata above the relief roadway. The roof and two sides of the relief roadway have large deformation, but the impact on the concentrated downhill is small, and the relief roadway effectively releases the pressure of the mining area. The relief roadway is located at a distance of 40 m from the stope face of 7011, which is reasonable and can effectively protect the track. In addition, enough width of coal pillar should be reserved to make the coal pillar bear larger ground stress.