摘要
为研究煤峪口矿8605工作面矿压显现规律,采用现场实测的方法实测了工作面支架工作阻力及巷道围岩变形量。研究结果表明,工作面支架初撑力基本分布在20~30 MPa之间,工作面初次来压步距约为25 m,周期来压步距约为10~15 m,运输巷道围岩变形远大于回风巷道,两巷超前支护距离设置为30~50 m较为合理。
In order to study the developing law of ore pressure in 8605 working face of Meiyukou Mine,the working resistance of support and surrounding rock deformation of roadway were measured by field measurement.The research results show that the initial support force of the working face is basically distributed between 20 and 30 MPa,the initial pressure step distance of the working face is about 25m,and the cyclic pressure step distance is about 10~15m.The surrounding rock deformation of the transport roadway is much greater than the return air roadway,and the advance support distance of the two lanes is reasonable to set 30~50m.
作者
李健伟
LI Jianwei(Shanxi Datong Coal Mine Group Co.,Ltd.Meiyukou Mine,Datong037003,China)
出处
《煤矿现代化》
2021年第3期92-94,98,共4页
Coal Mine Modernization
关键词
矿压显现规律
来压步距
初撑力
工作阻力
Development law of ground pressure
Pressure step
Setting load
Working resistance
