摘要
为掌握辛置煤矿2号煤层大采高工作面回采作业应力分布及覆岩运动规律,具体分析工作面覆岩三带及超前支承压力分布规律,采用理论、模拟与实测相结合的手段,对超前支承压力分布进行现场实测分析。结果表明,大采高工作面覆岩垮落带、裂隙带的发育高度分别在17~25 m和30~35 m,工作面超前支承压力的范围为50 m。
In order to master the stress distribution and overburden movement law during the mining operation of the No. 2 coal seam in Xinzhi Coal Mine, the distribution law of overburden zones and advanced bearing pressures in the working face were specifically analyzed. The overburden zones were distributed using theory, simulation and actual measurement. The pressure distribution of the advanced support was specifically analyzed using on-site measured analysis methods. The results showed that the development heights of the overburden collapse zone and fracture zone in the large mining depth working face were in the range of 17 ~ 25 m and 30 ~ 35 m respectively;the range of advanced bearing pressure in the working face was 50 m.
作者
郑田野
Zheng Tianye(Xinzhi Mine,Huozhou Coal and Electricity Group,Huozhou 031412,China)
出处
《煤炭与化工》
CAS
2020年第6期5-8,共4页
Coal and Chemical Industry
关键词
大采高
钻孔应力计
超前支承压力
large mining height
drilling stress gauge
advanced support pressure