摘要
冲击风险的预警和评价是冲击地压矿井安全生产的重要前提。以陕西长武亭南煤业有限责任公司307工作面为研究对象,利用微震监测、矿压监测相结合的技术手段,研究了不同地质层位微震活动度指标特征,通过对上覆岩层各地质层位微震进行精细分析,揭示了厚煤层综放开采工作面过见方影响区时各层位岩层的微震活动度指标变化特征及规律,提出了基于微震活动度指标的冲击风险分层差异化评价方法,建立了基于高位微震活动度的冲击地压综合预警指标,现场应用证明了该综合指标用于煤矿冲击地压风险预警的可行性。
The early warning and evaluation of rock burst risks are important prerequisites for the safe production of rock burst mines.Taking 307 working face of Shaanxi Changwu Tingnan Coal Industry Co.,Ltd.as the research object,the technical means of microseismic monitoring and mine pressure monitoring were used to study the characteristics of microseismic activity index in different geological layers.Through fine analysis of microseismic events in different geological layers of overlying rock strata,the variation characteristics and laws of microseismic activity index in each layer of the rock strata during fully mechanized caving face passing through the square influencing zone in thick coal seam were revealed,and a differentiated evaluation method for rock burst risks for different layer based on microseismic activity index was proposed,and comprehensive early warning index for rock burst based on high-level microseismic activity was established.The feasibility of this comprehensive index for coal mine rock burst risk's early warning was proved by on-site application.
作者
边戈
牛一凡
高歆于
刘彦强
李航
李一涵
褚夫乐
郝宪杰
高红兵
BIAN Ge;NIU Yifan;GAO Xinyu;LI Hang;LIU Yanqiang;LI Yihan;CHU Fule;HAO Xianjie;GAO Hongbing(Shaanxi Changwu Tingnan Coal Industry Co.,Ltd.,Xianyang,Shaanxi 713602,China;School of Energy and Mining Engineering,China University of Mining and Technology-Beijing,Haidian,Beijing 100083,China)
出处
《中国煤炭》
北大核心
2024年第11期46-54,共9页
China Coal
基金
国家自然科学基金(52174097,51804309)
国家重点研发计划(2022YFC3004600)
中央高校基本科研业务费专项资金资助(2022JCCXNY03)。
关键词
地质分层
冲击地压
冲击风险评价
微震监测
微震活动度指标
geological layers
rock burst
rock burst risk evaluation
microseismic monitoring
microseismic activity index
