煤矿安全2024，Vol.55Issue(12)：206-213,8.DOI:10.13347/j.cnki.mkaq.20231251
基于微震监测的底板陷落柱注浆围岩体采动破坏研究
Research on mining-induced failure of grouted rock mass around collapse column based on micro-seismic monitoring
摘要
Abstract
With the gradual depletion of shallow coal resources,the most serious threat restricting the safe mining of Group A coal seams in Huainan Mining Area has changed from gas to floor confined water.According to the production and geological conditions of 12123 working face in Pan'er Mine,a micro-seismic monitoring system was established for the coal floor.Through mining and in-terpreting micro-seismic data,a micro-seismic identification method for floor failure and conduction induced by mining was pro-posed.An inversion method of mining fractures evolution was defined based on micro-fractures conductivity.The failure conduc-tion evolution characteristics of grouted rock around collapse column were revealed.The results show that,affected by the advance grouting reinforcement,micro-seismic events show a phenomenon of detour distribution around the grouted collapse column.There was a longitudinal through zone for floor conductivity in the interface and shallow layer,and other areas were sporadically isolated due to the barrier of grouting veins.关键词
底板突水/下三带/微震监测/导通率/陷落柱Key words
floor water inrush/lower three zones/micro-seismic monitoring/conductivity/collapse column分类
矿业与冶金引用本文复制引用
余国锋,韩云春,任波,魏廷双,郑群,汪洋,牟文强..基于微震监测的底板陷落柱注浆围岩体采动破坏研究[J].煤矿安全,2024,55(12):206-213,8.基金项目
安徽省自然科学基金资助项目(2008085ME145) （2008085ME145）
