下沟煤矿综放工作面煤体支承压力分布规律研究

Study On The Law Of Abutment Stress Distribution In Longwall With Top-coal Caving Face Of Xiagou Coal Mine

摘要: 以下沟煤矿ZF1804综放工作面现场实测为基础,结合理论计算,得出采动影响条件下工作面超前支承压力范围,为两顺槽的端头支护提供了可靠的理论依据;同时通过实测与模型计算相结合,验算了区段煤柱留设尺寸的合理性,并在此基础上探讨了沿空掘巷无煤柱开采的可行性。

Abstract: Based on the field test and theoretical calculation of Face ZF1804 adopted longwall with top-coal caving mining,the paper presents the scope of abutment stress,which provides theoretical foundation for two-end supporting.Combined with field tests and numerical simulation,the size of section pillar is proved to be reasonable and the feasibility of driving without section pillar is also studied.