摘要
针对铺龙湾煤业5102工作面推进速度对支承压力变化规律影响,采用现场实测、数值模拟研究了不同推进速度下的工作面矿压变化规律,当推进速度大5 m/d时,应力集中程度已基本不再发生改变,且工作面煤壁前方的塑性区与石门周围塑性区已经开始接近贯通,因此确定合理的工作面推进速度为3 m/d^5 m/d。
In this paper,the influence of advancing speed on the variation of abutment pressure of 5102 working face in Pulongwan coal industry is analyzed.The ground pressure changes under different advancing speeds are studied by field measurement and numerical simulation.When the advancing speed is greater than 5 m/d,the stress concentration has been basically unchanged,and the plastic zone in front of the coal wall and the plastic zone around the crosscut have begun to be nearly connected.Therefore,the reasonable advancing speed of the working face is determined to be 3 m/d^5 m/d.
作者
孙守孝
Sun Shouxiao(Shanxi Coal Import and Export Group,Taiyuan Shanxi 030000)
出处
《同煤科技》
2020年第6期12-14,17,共4页
Datong Coal Science & Technology
关键词
推进速度
支承压力
围岩应力
Propulsion speed
Abutment pressure
Stress of surrounding rock
