摘要
布尔台煤矿42#煤层采用综放开采技术,工作面区段间留设25~30 m的宽煤柱,造成资源浪费。为节约煤炭资源,消除由于煤柱引起的灾害,决定采用沿空留巷方式。为掌握采空区侧向支承压力分布对沿空巷道的影响,通过理论分析建立沿空巷道围岩结构力学模型,确定了沿空巷道位置处的应力值。
42# coal seam of Buertai coal mine is mined with fully mechanized top coal caving mining technology, working face section left 25-30 m width coal pillar, resulting in a waste of resources. To save the coal resources, eliminate the disaster caused by coal pillar, decided to adopt the gob side entry mode. [n order to grasp the gob side abutment pressure distribution＇s influence on roadway along the gob, using theoretical analysis to establish the mechanical model of surrounding rock of roadway, determined the stress location of roadway.
作者
吴士良
王辉
王志奎
WU Shi-liang WANG Hui WANG Zhi-kui(College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, Chin)
出处
《煤炭技术》
北大核心
2017年第5期1-2,共2页
Coal Technology
关键词
沿空留巷
采空区
侧向支承压力
entry driving along goal
gobs
side abutment pressure
