摘要
以卧龙湖煤矿8102软厚煤层工作面为例,通过现场实测接架前后支架工作阻力及回采巷道表面位移,研究工作面长度变化对工作面矿压显现规律影响。研究结果表明,工作面长度增加导致工作面矿压显现强度减弱及基本顶周期来压步距减小,同时回采巷道超前支承压力剧烈影响距离减小,因此当工作面增长时可适当减小超前支护距离。
In order to investigate the influence of the change of longwall face length on the strata pressure behavior,the field monitoring method was used to monitor the change of hydraulic support pressure and the surface displacement of roadways before and after jointing the second open-off cut on the soft-thick 8102 longwall face in Wolonghu coal mine. The study results reveal both the strength of strata pressure behavior and the regular weighting space of main roof decrease with longer longwall face. Meanwhile, the influenced distance of advanced support pressure drops,indicates the reliability of reducing the advanced supporting distance when the longwall face increased in the same coal seam.
出处
《煤炭技术》
CAS
北大核心
2016年第6期81-83,共3页
Coal Technology
关键词
工作面长度
矿压
周期来压
现场实测
face length
strata pressure
regular weighting space
field monitoring
