采矿与安全工程学报2018，Vol.35Issue(1)：10-18,9.DOI:10.13545/j.cnki.jmse.2018.01.002
软岩巷道掘进期间微震活动特征及稳定性分析
Stability analysis and characteristic of seismic activity during roadway development in soft rock
摘要
Abstract
For studying the failure mechanism of surrounding rock during roadway development in soft rock, an ESG monitoring system is applied to monitor surrounding rock failure in roadway of mining face 4106 of Liangjia coal mine. Characteristics of seismic activity during roadway development in soft rock is analyzed. Interactions between seismic activity and the convergence of roadway as well as sup-porting structures force are studied. The results show that:1) Moment magnitude of microseismic events are mainly concentrated in -2.770-0.589 during roadway development in soft rock, the average value of moment magnitude of microseismic events is -1.5; Microseismic events are divided into three regions, they are high-density area(0-2 m), medium density area(2-6 m) and low density area (other than 6 m). 2) Microseismic events mainly gather in roof, shoulder and bottom of roadway where they are the most serious failure sites of surrounding rock. 3) Seismic activity is consistent with the convergence of roadway and supporting structures force. The results show that it is feasible to combine the traditional monitoring technique with the microseismic monitoring system to quantitatively monitor failure of sur-rounding rock, it can make up the limitations by using qualitative analysis for rock failure.关键词
软岩巷道/微震监测/定量评价/关键部位Key words
soft rock roadway/MS monitoring/quantitative evaluation/key position分类
矿业与冶金引用本文复制引用
王雷,王琦,李术才,徐奴文,潘锐,何满潮,许英东,张皓杰..软岩巷道掘进期间微震活动特征及稳定性分析[J].采矿与安全工程学报,2018,35(1):10-18,9.基金项目
国家自然科学基金项目(51674154,51474095) （51674154,51474095）
中国博士后科学基金项目(2017T100116,2016M590150) （2017T100116,2016M590150）
深部岩土力学与地下工程国家重点实验室开放基金项目(SKLGDUEK1519) （SKLGDUEK1519）
国家重点研发计划项目(2016YFC0600901) （2016YFC0600901）
