孤岛工作面巷道采掘期间应力演化规律
Stress Evolution during the Island Coal Face Roadway Excavation
冯慧 1张国龙1
作者信息
- 1. 山东科技大学矿业与安全工程学院,青岛 266590
- 折叠
摘要
本文以山东某矿地质条件为背景,运用FLAC3D数值模拟软件,模拟了该矿1307孤岛工作面顺槽掘进及工作面回采期间顺槽两帮应力演化规律.分析表明轨顺及运顺采空帮在巷道掘进期间处于高应力集中状态,应力集中系数在2.08左右浮动;孤岛工作面回采期间,轨顺及运顺周围均处于高应力集中状态,轨顺回采帮及运顺回采帮应力峰值呈"马鞍状"变化趋势,最大应力集中系数为2.53.通过模拟分析可为巷道支护位置及支护方式提供重要的参考依据.
Abstract
In this paper, according to the geological conditions of a mine in Shandong, it used FLAC3D numerical simulation software to simulate the 1307 island working face and the stress evolution law of the two sides of the working face during mining. The analysis shows that the track transports and the strong-belt conveyer are in a state of high stress concentration and the stress concentration factor is around 2.08; in the isolated working face, around t the track transports and the strong-belt conveyer are at the high stress concentration, and the peak value of stress of the mining sides is saddle shaped, and the maximum stress concentration factor is 2.53. Through the simulation analysis, it can provide important reference for the location and support of roadway support.
关键词
孤岛工作面/数值模拟/巷道/应力分布Key words
island coal face/numerical simulation/roadway/stress distribution引用本文复制引用
出版年
2017
NETL
NSTL
维普
万方数据