冲击地压矿井综采工作面同时相向回采可行性分析

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FLAC3D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...

Analysis on feasibility of simultaneous opposite coal winning of fully-mechanized working face in rockburst mine

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 FLAC3D 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.