摘要
利用FLAC3D数值模拟软件模拟分析了切顶巷区域的应力状态特征。结果表明：回风巷下帮与瓦斯巷之间垂直应力较高，而水平应力则在回风巷底板和下帮集中较明显，切顶巷区域应力也明显集中，冲击危险性上升；为了避免两个相邻切顶巷形成叠加应力集中区，两切顶巷间距应不低于20m，间距可设置为20-50m。
The stress state characteristic of the cutting roof roadway region was simulated and analyzed by FLAG3D. the results had higher vertical stress while the horizontal stress concentration was obviously in floor and low side of the return airway, the stress of cutting roof roadway was obviously, thus the level of rock burst hazard increased. The distance between two cutting roof roadway are no less than 20 m and the distance can be set in the range from 20 m to 50 m, to avoid stress concentration regions by two adjacent cutting roof roadway superposition.
出处
《煤炭技术》
CAS
北大核心
2013年第2期86-88,共3页
Coal Technology
关键词
数值模拟
冲击矿压
切顶巷
numerical simulation
rock burst
cutting roof roadway
