基于FLAC模拟的矿井动力灾害机制分析  

Mechanism Analysis of Mine Dynamic Disasters that Based on FLAC Simulation

作　　者：李少飞 LI Shaofei(Yuwu Coal Industry,Shanxi Lu'an Group,Changzhi,046103)

机构地区：[1]山西潞安集团余吾煤业公司,山西长治046103

出　　处：《神华科技》2017年第7期31-33,共3页Shenhua Science and Technology

摘　　要：以某矿工作面发生的动力灾害为研究背景,分别采用理论分析和FLAC 3D数值模拟,对煤柱侧向支承应力和采场超前支承应力进行分析,得出动力灾害是由于两种应力的相互叠加所致,提出采取煤层注水、煤柱大孔径卸压和超前端头预裂爆破三种防控措施。研究结果表明:动力灾害的发生主要是由于受到了煤柱侧向支承压力和采场超前支承应力相互叠加的作用,采用一定的措施可以对动力灾害进行有效防控。Dynamic disaster in a mine working face as the research background,theoretical analysis and FLAC3D numerical simulation were applied to make analysis on support capability of slope coal pillar and advanced mining site,which comes to the conclusion that the dynamic disaster is due to overlaying of two kinds of stress,puts forward the coal reservoirs,large diameter coal pillar pressure relief and leading end of the pre splitting blasting these three prevention and control measures.The results show that:dynamic disaster is mainly due to the lateral abutment pressure of coal pillar and slope advance support stress superposition effect,adopting some measures can be effective prevent and control the dynamic disasters.

关 键 词：动力灾害 FLAC 3D数值模拟 应力叠加 侧向支撑应力 

分 类 号：TD76[矿业工程—矿井通风与安全]