深埋工作面断层爆破弱化防冲研究  

Break-tip blast technology for rock burst control when deep working face passes through fault

作　　者：马壮 朱广安 刘海洋[2] MA Zhuang;ZHU Guang-an;LIU Hai-yang(Shaanxi Coal Industry Group Huangling Jianzhuang Mining Co.,Ltd.,Yan′an 727304,China;Xi′an University of Science and Technology,Xi′an 710054,China)

机构地区：[1]陕西煤业集团黄陵建庄矿业有限公司冲击地压防治办公室,陕西延安727304 [2]西安科技大学,陕西西安710054

出　　处：《煤炭科技》2022年第4期173-177,共5页Coal Science & Technology Magazine

基　　金：国家自然科学基金青年基金资助项目(51904235)。

摘　　要：为探究断层区域煤体在动静载共同作用下产生滑移进而诱发冲击地压现象,提出了对断层区域进行爆破卸压的防治思路,利用连续元数值计算进行模拟爆破后断层带应力重分布情况,再与现场微震监测数据进行对比分析。结果表明,断层带顶板预裂爆破措施可有效地降低静载应力集中,增大动载的衰减,与数值计算结果较为符合,该措施在3206工作面现场应用效果良好。In order to explore the slippage of coal in the fault area under the combined action of static and dynamic loads to induce rock bursts,a prevention and treatment idea of blasting pressure relief in the fault area is proposed,and continuous element numerical calculation is used to simulate the redistribution of stress in the fault zone after blasting.,And then compared with the field microseismic monitoring data,the results show that the pre-splitting blasting measures of the fault zone roof can effectively reduce the static load stress concentration and increase the attenuation of the dynamic load,which is more consistent with the numerical calculation results.The field application effect of 3206 working face good.

关 键 词：断层滑移 冲击地压 动力特性 数值模拟 

分 类 号：TD324[矿业工程—矿井建设]