Shaanxi Binchang Minning Group Co., Ltd.
Shaanxi Binchang Mengcun Mining Co., Ltd.

针对高位厚硬顶板诱发冲击地压的问题,常规卸压手段难以达到区域卸压防治冲击地压的目的,提出地面区域预裂顶板防治冲击地压的方法,分析地面预裂顶板卸压防冲的原理,设计孟村煤矿401102工作面地面压裂防冲方案。现场试验在地面安设地面微震,在井下安设井下微震、地音、应力等监测系统,构建“裂隙场—震动场—应力场”等多场多参量联合监测体系。试验结果表明,地面压裂可有效促进压裂区域高应力集中区能量的释放,对目标岩层弱化改造效果较好。

In view of the problem of rock burst induced by high thick roof, it is difficult for conventional pressure relief methods to achieve the goal of regional pressure relief to prevent rock burst. We put forward the method of preventing rock burstby presplitting roof in surface area, analyze the principle of pressure relief and anti-scour of presplitting roof, and design thescheme of surface fracturing and anti-scour in Mengcun coal mine. During the field test, the monitoring systems of groundmicroseism and underground microseism, geoacoustic and stress are installed, and the joint monitoring system of multi-fieldand multi-parameter such as “ fracture field-vibration field-stress field” is constructed. The test results show that the surfacefracturing can effectively promote the release of energy in the high stress concentration area of the fracturing area, and theeffect of weakening the target strata is better.

国家重点研发计划资助项目(2022YFC3004604)