摘要
受矿井采掘布局影响,耿村煤矿13230工作面和13200工作面在一定回采时期会出现同时回采,两工作面同时回采期间存在应力集中叠加,增加工作面发生冲击地压危险性的可能性。为确定两工作面同时回采的可行性,通过FLAC^(3D)软件建立2个工作面不同回采阶段的回采模型进行数值模拟和理论分析。结果表明,两工作面同时回采期间相互影响很小,不是引发冲击地压的主要因素;13200工作面单采期间的采动应力和影响范围均高于同时回采期间。两工作面回采期间需制定冲击地压专项措施,加强回采全过程的监测和防治工作,并提出冲击地压防治技术建议,为类似条件下工作面回采及冲击地压防治提供理论依据和技术参考。
Because of the mining layout of the mine,No.13230 and No.13200 working faces in Gengcun Coal Mine will be mined at the same time in a certain mining period.During the simultaneous mining of the two faces,stress concentration superposition existed,which can increase the possibility of rockburst risk in the working face.In order to determine the feasibility of simultaneous mining of the two working faces,the mining models of different mining stages of two working faces are established by FLAC^(3D) software for numerical simulation and theoretical analysis.The results show that the interaction between the two working faces during simultaneous mining was very small,which is not the main factor causing rockburst;the mining stress and influence range during single mining in No.13200 working face are higher than those during simultaneous mining.During the mining period of the two working faces,it is necessary to formulate special measures for rockburst,strengthen the monitoring and prevention of the whole mining process,and put forward technical suggestions for rockburst prevention,so as to provide theoretical basis and technical reference for mining and rockburst prevention under similar conditions.
作者
李磊
Li Lei(Energy Technology Development Co.,Ltd.,China Coal Science & Engineering Group Co.,Ltd.,Beijing 100000,China)
出处
《能源与环保》
2022年第3期264-269,共6页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家自然科学基金资助项目(51674099)。
关键词
冲击地压
同时回采
应力叠加
数值模拟
防治措施
rockburst
simultaneous coal winning
stress superposition
numerical simulation
prevention and control measures
