摘要
为了进一步丰富工作面冲击危险评价方法,完善冲击地压防治体系,结合理论分析与工程实践,建立了融合4项评价指标的冲击危险综合评价指数W,用于工作面开采期间的冲击危险评价,联合震源定位及波速层析成像技术实现了对各开采区域冲击危险的综合预警。研究结果表明:(1)地质条件复杂及不规则煤柱区域震源聚集,波速高值异常;(2)融合多指标赋权建立的冲击危险综合评价指数W与震源数量及能级成较好的耦合关系,能适用于工作面冲击危险评价;(3)综合震源定位、波速层析成像和多指标融合赋权的冲击危险评价方法,可实现对高应力集中区的识别、冲击危险区域的定位、冲击危险等级的判定和卸压效果的检测。研究结果可为煤矿动力灾害的防治提供参考。
In order to enrich working face burst risk assessment method and advance the prevention and control system of coal burst,a comprehensive coal burst risk index W that integrates four evaluation indicators was estab-lished by combining the theoretical analysis and engineering practice.Combined with seismic source positioning and wave velocity tomography technology,comprehensive early warning of coal burst risk in each mining area was achieved.The results show that the seismic source is concentrated,and the wave velocity is abnormally high in the area with complex geological conditions and irregular coal pillars.The burst risk comprehensive evaluation index W established by integrating multi-index weighting has a good coupling relationship with the number and energy level of the seismic source,which can adapt to the burst risk evaluation of working face.The coal burst risk evaluation method that integrates source location,wave velocity tomography and multi-index fusion weighting can realize the identification of high stress concentration area,the positioning of burst risk area,the judgment of burst risk level and the detection of pressure relief effect.The research can provide some reference and guidance for the prevention and control of coal mine dynamic disaster.
作者
杨景
牟宗龙
李家卓
刘广建
尹子霆
庄佳鑫
YANG Jing;MU Zonglong;LI Jiazhuo;LIU Guangjian;YIN Ziting;ZHUANG Jiaxin(State Key Laboratory for Mining and Disaster Prevention and Control in Deep Coal Mine,Anhui University of Science and Technology,Huainan 232001,China;Jiangsu Engineering Laboratory of Mine Earthquake Monitoring and Prevention,China University of Mining and Technology,Xuzhou 221116,China;School of Mines,China University of Mining and Technology,Xuzhou 221116,China;School of Mining Engineering,Anhui University of Science and Technology,Huainan 232001,China;Institute of Rock Mechanics,Ningbo University,Ningbo 315211,China)
出处
《采矿与岩层控制工程学报》
EI
北大核心
2024年第3期77-90,共14页
Journal of Mining and Strata Control Engineering
基金
安徽理工大学高层次引进人才科研启动基金资助项目(2023yjrc71)
国家自然科学基金资助项目(52274147)
国家重点研发计划基金资助项目(2022YFC3004603)。
关键词
冲击地压
震源定位
波速演化
冲击危险评价方法
coal burst
seismic source location
wave velocity evolution
burst risk evaluation method
