义马煤田矿井冲击地压微震事件发生时间偶合性研究

义马煤田进入深部开采后，冲击地压事件频发，是我国冲击地压最为严重的矿区之一。通过汇总义马煤田内千秋煤矿、常村煤矿、跃进煤矿、杨村煤矿及耿村煤矿5对冲击地压矿井统一时间段的所有微震事件，并对这些微震事件发生的时间、地点、层位、相距距离及事件发生的相隔时差等要素进行综合分析，发现5对矿内部分事件发生存在时间偶合性，这些时间偶合的事件不是同一微震事件且并不是相对独立的微震事件，而是相邻矿井、采区、工作面的采掘扰动致采空区上覆岩层顶板活动的结果，表明目前国内相邻冲击地压矿井所采用的单矿微震监测预警已具有一定的局限性。研究为下一步国内冲击地压矿井推行矿间联合预警提供了可行性指导。

Study on coincidence of occurrence time of microseismic events of rock burst in Yima Coalfield

After deep mining in Yima Coalfield，rock burst events occur frequently，which is one of the most serious rock burst mining areas in China.By summarizing all microseismic events of Qianqiu Coal Mine，Changcun Coal Mine，Yuejin Coal Mine，Yangcun Coal Mine and Gengcun Coal Mine in Yima Coalfield in a unified period of time，and comprehensively analyzing the time，place，horizon，distance and time difference of occurrence of these microseismic events.It was found that there existed 5 pairs time coincidence in the occurrence of some events in the mine.These time coincidence events were not the same microseismic event and not relatively independent microseismic events，but the result of roof activity of overlying strata caused by mining disturbance in adjacent mines，mining areas and working faces，which indicated that the adjacent rock burst mines in China were currently adopting these events.Microseismic monitoring and early warning of single mine had certain limitations.The study provided feasible guidance for the implementation of joint early warning between mines in rock burst mines in China in the next step.