采矿与安全工程学报2017，Vol.34Issue(3)：472-478,7.DOI:10.13545/j.cnki.jmse.2017.03.011
巷道受断层端部应力集中失稳机理及控制研究
Roadway instability under stress concentration near the fault end and its control technique
摘要
Abstract
The centralized haulage roadway in Qidong coal mine was subject to serious damage and deformation.The most serious damage occurred in the area close to the fault tip DF8 with the minimum in-between distance of 7 m.In this study,the features of the roadway instability affected by the DF8 thrust fault were described in details based on site investigation and field observation.According to the result of in-situ stress measurement,a numerical modelling was performed to further explore the deformation failure mechanism of the ground after excavation.Meanwhile,great emphasis was put on the modelling method of the fault on the horizontal and vertical section.The results have indicated that asymmetric deformation appears remarkably at the crown,the floor and the sidewall nearby the fault.Finally,the upgraded support design of asymmetric arrangement of rock bolt and anchor cable is put forward,which proves successful in rehabilitating the roadway.关键词
巷道失稳/断层模拟/端部应力集中/围岩变形机理/非对称锚杆支护Key words
roadway instability/fault simulation/stress concentration nearby fault ends/ground deformation and failure mechanism/asymmetric rock bolt support分类
矿业与冶金引用本文复制引用
王立平,李学华,程建龙,李彦葆..巷道受断层端部应力集中失稳机理及控制研究[J].采矿与安全工程学报,2017,34(3):472-478,7.基金项目
国家重点基础研究发展计划(973)项目(2014CB046301) （973）
国家自然科学基金项目(51204168) （51204168）
江苏省科技计划项目(BK20140051) （BK20140051）
