摘要
以燕子山煤矿8102综采放顶煤工作面为研究对象,通过数值模拟试验,分析了工作面回采过程中采场围岩应力、破坏分布规律。结果表明:受到采动及巷道围岩应力集中的影响,在工作面煤壁边缘、巷道边缘均发生不同程度的屈服破坏;8102工作面超前支承压力值呈现采面中部>运输机机尾>运输机机头的特征,支承应力峰值出现在煤壁前方10 m附近,影响范围为工作面煤壁前方80 m,最大应力集中系数1.6。
YanZiShan coal mine 8102 working face of fully mechanized caving coal face as the research object,through numerical simulation,the analysis of the stope wall rock stress in the process of mining face,the damage distribution rules. The results show that under the influence of mining roadway surrounding rock and stress concentration,on the edge of the working face of coal wall,roadway edge have been varying degrees of yield failure; 8102 face abutment pressure value is central 〉 transport tail 〉 transport aircraft,the characteristics of the conveyor head bearing stress peak value appears near the coal wall in front of the 10 m,influence range of working face coal wall in front of the 80 m,the maximum stress concentration coefficient of 1. 6.
出处
《煤》
2017年第3期10-11,38,共3页
Coal
基金
内蒙古科技大学创新基金(31253027)
关键词
综放工作面
围岩应力
数值模拟
fully-mechanized caving
surrounding rock stress
the numerical simulation
