煤矿安全2017，Vol.48Issue(10)：65-68,4.DOI:10.13347/j.cnki.mkaq.2017.10.017
正断层两盘不同开采顺序的支承应力演化规律
Bearing Stress Evolution Law of Normal Fault Under Two Different Mining Sequence
摘要
Abstract
Taking the working face mining along both sides of the normal fault when working face is positioned along the positive fault,the FLAC3D numerical simulation is used to study the stress of two plates coal pillar in fault and the evolution laws of advance support stress of replace working face when footwa11 working face replaces upper working face firstly or the upper working face replaces the footwall working face.Research results show that:mining is on one side of the working face near normal fault,the stress concentration degree of coal pillar of the footwall face mining is less than that on the upper plate,footwall face mining has bigger influence on the stress of coal and rock in upper plate;mining is on both sides of the working face near fault,when upper plate replaces the footwall face mining,the stress concentration degree of coal pillar of upper plate is higher;when footwall replaces the upper plate face mining,the stress concentration degree of coal pillar of footwall working face is lower;advanced support stress concentration of replace face is obvious under two kinds of mining order;the advanced stress concentration degree of upper plate working face is greater when upper plate working face replaces the footwall working face.关键词
正断层/支承应力/开采顺序/冲击地压/应力集中/矿压显现Key words
normal fault/bearing stress/mining sequence/rock burst/stress concentration/strata behaviors分类
矿业与冶金引用本文复制引用
孔朋,蒋金泉,王普,徐传伟..正断层两盘不同开采顺序的支承应力演化规律[J].煤矿安全,2017,48(10):65-68,4.基金项目
国家自然科学基金资助项目(51574155) （51574155）
泰安市科技发展计划资助项目(2015ZC1058) （2015ZC1058）
