摘要
在使用锚杆支护矿井巷道围岩时,顶锚杆支护角度的变化会引起围岩位移和应力的变化,在FLAC^(3D)数值模拟的基础上,分析与研究了在煤层倾角10°~18°的变化中,相邻煤层间的顶板位移、两帮位移、底鼓以及竖直和水平方向应力的变化规律。
When the bolt is used to support the surrounding rock of mine bottom,changing the deflecting angle of roof bolt will cause the change of the displacement and stress of the surrounding rock ,to provides a basis for selecting roof bolt support angle for different coal seam,FLAC3D is used to simulate the deflection of the boh,then the variation of displacement and stress of coal seam with 10 degrees to 18 degrees are analyzed and studied.
作者
孟海东
崔小晋
刘占宁
王振涛
MENG Hai-dong;CUI Xiao-jin;LIU Zhan-ning;WANG Zhen-tao(Mining Research Institute, Inner Mongolia University of Science and Technology, Baotou 014010, China)
出处
《煤炭技术》
CAS
2018年第5期9-11,共3页
Coal Technology
关键词
锚杆支护
煤层倾角
位移与应力
数值模拟
rock bolting
dip angle of coal seam
displacement and stress
numerical simulation
