【摘 要】
：
After long-term sedimentary structure effect,the coal face roof rock itself appears various fractures and after mining the coal,owing to mine pressure appeared,part of goaf overburden rock gradually b
【机 构】
：
College of Mining Engineering, Liaoning Technical University, Fuxin 123000, China
【出 处】
：
2012国际矿山测量学术论坛(proceedings of the joint international worksh
论文部分内容阅读
After long-term sedimentary structure effect,the coal face roof rock itself appears various fractures and after mining the coal,owing to mine pressure appeared,part of goaf overburden rock gradually become distortion,delamination even fall.Due to the collapse of roofs,formation of air disasters is related to the rock pressure and the surrounding rock sport law.Therefore,know the law is a key factor of realizing mine safe and effective production.This paper bases on the background of One Mine full-mechanized mining face in thin coal seam of 8214,using UDEC to study working face of first weighting nterval,cycle weighting interval and fracture evelopment.By analyzing the simulation results,it reflects the law of rock pressure and the surrounding rock sporting.The conclusion provides a reference for knowing the problem of mine roof collapse in similar mine.
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