不连续煤体断层附近应力分布规律研究

摘要

为研究断层附近应力分布规律,防止断层附近应力异常区域对采掘活动的影响,以天安矿业集团星村煤矿3307工作面为例,对微震监测系统取得的数据进行分析,同时运用理论分析.数值模拟.现场实测等手段,得出了对应工况下的不连续煤体断层附近应力分布规律.研究发现,断层上盘应力明显高于断层下盘应力,且应力异常区域主要集中在断层附近80m范围内;同时,关键层位的确定与处理对于冲击地压的防治尤为重要,工作面需针对不同的推采形式及工作面布置方式,制定相应的防范措施.%In order to study the stress distribution near fault,prevent the influences of abnormal stress to mining activities near the fault,the paper took 3307 working face in Xingcun Coal Mine as an example,to analyze the micro-seismic monitoring results.Meanwhile,theoretical analysis,numerical simulation and field measurement were carried out,to obtain the stress distribution law near fault with discontinuous coal mass.The results show that,the footwall stress is higher than the plate stress on the fault,unstable area of the stress are mainly concentrated within 80m near the fauat the same time,processing of the key layer is particularly important for the rock burst control;reasonable precautions for different mining forms and working face layouts shall be formulated.