摘要
针对矿井临空巷道掘进期间受冲击地压显现影响,巷道支护时常被破坏的问题,通过实验室实验、现场测试对煤岩扩容硬化及巷道围岩变形进行了分析计算,并采用松动圈理论和组合拱理论对锚杆(索)长度、直径及间排距、数量等支护参数进行优化设计,提高了巷道支护强度。经现场应用,巷道位移量、破坏程度及锚杆、锚索断裂数量均得到了很好的控制,巷道抗冲击能力得到显著提升。
In view of the problem that the roadway support was often damaged due to the impact of the ground pressure during the tunneling of the mine goaf roadway,the expansion and hardening of coal and rock and the deformation of the roadway surrounding rock were analyzed and calculated through laboratory experiments and field tests,and the support parameters such as the length,diameter,spacing and number of anchor rods(cables)were optimized by using the loose circle theory and the combined arch theory,which improved the roadway support strength.Through field application,the displacement,damage degree and the number of broken bolts and anchor cables of the roadway had been well controlled,and the impact resistance of the roadway had been significantly improved.
作者
俞卫星
刘深
周钰杰
YU Wei-xing;LIU Shen;ZHOU Yu-jie(Huating Coal Mine,Huating Coal Industry Group,Huating 744100,China;Huating Coal Industry Group Trade Union,Huating 744100,China)
出处
《煤炭科技》
2023年第1期7-10,20,共5页
Coal Science & Technology Magazine
基金
国家自然科学基金资助项目(51874292,51934007)
华能集团总部科技资助项目(HNKJ20-H31)。
关键词
煤巷
冲击地压
松动圈
coal roadway
rock burst
loose ring
作者简介
俞卫星(1986-),男,甘肃华亭人,工程师,2018年毕业于西安科技大学采矿专业,现从事煤矿技术管理及“一通三防”工作;通讯作者:刘深(1988-),男,陕西山阳人,工程师,2011年毕业于西安科技大学,现任山寨煤矿冲击地压防治办公室主任,主要从事冲击地压防治工作。
