木瓜煤矿10-102运输顺槽返修段支护设计应用研究

Study on design and application of support for 10-102 transportation slotted reconstruction section of Mugua Mine

木瓜煤矿目前开采的10号煤层,上部为9号煤层采空区,煤层间距较近,并且由于地质条件复杂,导致10-102工作运输顺槽围岩变形严重。为了解决该问题,通过理论研究及数值模拟的方法,对于其返修段进行了支护体系的优化。现场应用及围岩位移观测证实,工作面推进至该位置时,巷道顶板最大下沉量约为100 mm,两帮最大移进量约为180 mm,巷道整体变形量较小,控制在合理范围内,取得良好的支护效果,能够满足煤炭运输的要求。

No. 10 coal seam mined in Mugua Mine, the upper part was the No. 9 coal seam goaf, the coal seam spacing was very close, and due to the complicated geological conditions, the 10-102 working transport was seriously deformed around the surrounding rock. In order to solve this problem, through the theoretical research and numerical simulation method, the support system was optimized for the rework section. Field application and surrounding rock displacement observation confirmed that when the working face was advanced to this position, the maximum subsidence of the roof of the roadway was about 100 mm, the maximum displacement of the two sides about 180 mm, and the overall deformation of the roadway was small, and the control within a reasonable range, the technology achieved good support and met the requirements of coal transportation, with a good support effect.