摘要
东周窑矿8301工作面采用放顶煤一次采全厚开采,但由于主采煤层层间距离小,煤层本身厚度变异性大,且有多层夹矸存在,导致工作面矿压显现规律不清楚。通过研究8301工作面的液压支架工作阻力在线监测数据、巷道围岩裂隙发育规律等内容,分析了工作面矿压显现规律和回采巷道的顶板稳定性,为提高资源回收率和采场围岩控制水平奠定了基础。
At 8301 fully-mechanized top-coal caving face of Dongzhouyao mine, the primary mineable coal beds are close and have several parting inside and variable thickness, resulting a complex strata behaviors. By studying on-line monitoring data of hydraulic support working resistance at 8301 working face and the fracture of roadway surrounding rock, the law of strata behaviors and roof stability of mining roadway are analyzed, helping to lift resources recovery and improve the level of surrounding rock control.
出处
《煤炭技术》
CAS
北大核心
2015年第8期81-84,共4页
Coal Technology
基金
国家重点基础研究发展计划(973)资助项目(2013CB227903)
关键词
放顶煤
夹矸
矿压显现
工作阻力
top-coal caving
parting
strata behaviors
working resistance
