关键词: 大断面巷道, 大落差, 逆断层, 破碎带, 支护技术

Abstract: Abstract: For fault fracture zone in the rock fissures and large section roadway through high fault fracture zone, the traditional crossing fault technology is difficult to guarantee the stability of the roadway and pedestrian safety and transportation issues. According to Pansan coal mine central mining waste rock belt machine transportation roadway in group C coal experienced up to 20~60m large thrust of the engineering geological condition, formulated the following plan to solve the above problem, first the fault fracture zone were pre-grouting, then used the hollow grouting anchor (cable) advance strengthening roof rock, implemented shed shoring, finally surrounding rock of roadway used secondary grouting reinforcement. Engineering practice shows that mining waste rock belt machine transportation roadway crossed fault fracture zone safely by using "pre-grouting - Advance Support - Shed - secondary grouting" whole section once through the fault fracture zone of the support technology, and roadway surrounding rock has been effective controlled.