摘要
根据瑞能煤矿的煤层地质条件,以该矿井2号煤层两侧为长壁采空区的区段煤柱正中间所掘的巷道为工程背景,采用物理相似模拟实验方法及数值模拟计算,得出区段煤柱中巷底鼓机理为区段煤柱上方的倒三角覆岩的巨大支承压力在煤柱中积聚的能量,掘巷形成开槽释能,加剧底鼓。
According to the geological conditions of the seams in Ruineng Mine, base on the gateway driven in the middle of the sectional coal pillar between the two mining goaf of the longwall mining faces in No. 2 seam of the mine as a engineering background, with the physic similar simulation experiment method and numerical simulation calculation, the floor heave mechanism obtained of the gateway in the middle of the coal pillar was the energy accumulated in the coal pillar under the gigantic support pressure of the delta form overburden strata above the coal pillar. The exeavation opening of the gateway could release the energy and the floor heave would be enhanced.
出处
《煤炭工程》
北大核心
2013年第3期68-70,共3页
Coal Engineering
基金
教育部科学技术研究重点项目(地方03166)
关键词
区段煤柱
巷道
底鼓
相似模拟实验
数值模拟
sectional coal pillars
gateway
floor heave
similar simulation experiment
numerical simulation
