摘要
针对潞安新疆煤化工集团二矿W4205运输巷全煤松散破碎且受冲击载荷影响的特点,在地质力学参数测试基础上,分析了巷道破坏机理,并对多个支护方案进行了数值模拟,最终确定了以W钢护板为组合构件的锚杆索联合支护方案。该方案实施于井下并进行矿压监测,监测结果表明该方案可以有效控制围岩变形,为类似条件的冲击载荷影响松散破碎全煤巷道支护提供了参考。
For the characteristic of loose and cracked surrounding rock condition of W4205 transportation roadway, Lu＇xin 2-nd Mine, which was easily influenced by impulse load, this paper analyzed roadway failure mechanism on the basis of geological and mechanical parameters test. Several supporting projects were numerically simulated and a combined supporting project of anchored bolt and cable, in which W steel guard plate was applied was selected. Application and monitoring showed that this project could effectively control sur- rounding rock deformation, which provided reference for full-coal loose and cracked roadway with impulse load.
出处
《煤矿开采》
北大核心
2014年第2期63-66,共4页
Coal Mining Technology
基金
国家国际科技合作项目:煤矿松软破碎煤岩体环保节约型化学加固材料及技术合作研发(2010DFB73070)
天地科技股份有限公司研发项目:新型高预应力全长锚固锚杆开发(KJ-2013-TDKJ-07)
天地科技股份有限公司研发项目:煤矿巷道底鼓治理专用树脂锚固剂研发(KJ-2013-TDKJ-17)
关键词
冲击载荷
破碎围岩
锚杆索联合支护
W护板
矿压监测
impulse load
cracked surrounding rock
anchored bolt and cable supporting
W guard plate
underground pressure moni-toring
