摘要
为揭示回采扰动下地质构造对微震活动性的影响,为煤矿动力灾害防控提供支撑,本文从地质构造、周期来压、应力变化三个维度,系统开展微震活动性规律研究。结果表明:断层对微震活动性控制作用显著,煤矿开挖遭遇断层时,微震事件频次与能量呈激增特征;周期来压在开采初期缓增、中期剧增、后期稳态,与微震活动性呈时程正相关;微震活跃阶段对应应力场强扰动,二者存在正相关响应关系。基于此,通过实时监测地质构造状态、周期来压时序及应力场动态演化,可实现微震密集区超前预测,为煤矿冲击地压等动力灾害防控提供科学依据与技术支撑。
To reveal the influence mechanism of geological structures on microseismic activity under mining disturbance and provide support for the prevention and control of coal mine dynamic hazards,this study focuses on the coupling relationship between geological structures and microseismic activity under mining disturbance.A systematic investigation into the laws of microseismic activity is conducted from three dimensions:geological structures,periodic weighting,and stress changes.The results indicate that faults exert a significant controlling effect on microseismic activity—when coal mine excavation encounters faults,the frequency and energy of microseismic events show a sharp increase.Periodic weighting exhibits a slow increase in the early mining stage,a sharp increase in the middle stage,and a steady state in the late stage,showing a temporal positive correlation with microseismic activity.The active stage of microseismicity corresponds to strong disturbance of the stress field,with a positive correlation response between the two.Based on these findings,advance prediction of microseismic dense areas can be achieved by real-time monitoring of geological structure states,the time sequence of periodic weighting,and the dynamic evolution of the stress field,providing a scientific basis and technical support for the prevention and control of dynamic hazards such as rock bursts in coal mines.
作者
叶妍
唐春安
张世超
YE Yan;TANG Chun’an;ZHANG Shichao(School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232000,P.R.China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,P.R.China;School of Public Safety and Emergency Management,Anhui University of Science and Technology,Huainan 232000,P.R.China)
出处
《南方金属》
2026年第1期24-26,32,共4页
Southern Metals
基金
安徽省教育厅自然科学研究项目—基于多源信息融合的岩爆风险量化与时间预警方法研究(2024AH050382)
安徽理工大学高层次人才科研启动基金(2023YJRC07)。
关键词
地质构造
微震监测
回采扰动
煤矿开采
geological structures
microseismic monitoring
mining disturbance
coal minin
