摘要
结合长山子煤矿1121综放工作面工程实际,采取现场观测与理论分析相结合的方法对大倾角松软煤层综放采场的系统性失稳影响因子、至灾机制,演化过程进行了深入分析。提出大倾角松软煤层综放采场"R-W-S-F"系统概念,指出了该类采场"R-W-S-F"系统诸因子失稳的链式破坏和恶性互馈机制,并确定了工作面倾向中上部为系统稳定性控制的关键区域。
Combined with the engineering practice of 1121 fully mechanized caving face in Changzishan Colliery, the author firsthas a deep analysis of systematic instability factors, disaster mechanism and evolution process at fully-mechanized sublevelcaving face in steeply dipping soft seam using the combination of on-site observation and theoretical analysis, then proposes ＂R-W-S-F＂ system concept at fully-mechanized sublevel caving face in steeply dipping soft seam, finally points out the chain failureand vicious mutual feedback mechanism of the ＂R-W-S-F＂ system in such stope and determines the upper part of the face asthe key area for controlling stability of the system.
出处
《江西煤炭科技》
2017年第3期41-44,共4页
Jiangxi Coal Science & Technology
关键词
大倾角煤层
综放开采
系统控制
围岩失稳
steeply dipping seam
fully-mechanized caving mining
system control
surrounding rock instability
