煤矿安全2017，Vol.48Issue(3)：40-43,47,5.DOI:10.13347/j.cnki.mkaq.2017.03.011
采动影响下断层冲击危险数值模拟
Numerical Simulation of Rock Burst Risk Induced by Fault Under Mining
李士栋 1雷瑞德2
作者信息
- 1. 兖煤菏泽能化有限公司赵楼煤矿,山东菏泽274705
- 2. 重庆大学资源及环境科学学院,重庆400044
- 折叠
摘要
Abstract
In order to study the stress evaluation laws of fault zone during mining,we use FLAC3D numerical simulation software and orthogonal experiment method to simulate the evaluation laws of stress peak around fault with dip angle of 30°,45°,60°,75°and fault throw of 6,10,20,30 m based on the geological data in Sbandong Luxi Mine.The results show that the stress concentration around fault zone is greater than that on the footwall when open-off cut is located on the hanging wall mining;the stress peak grows with the increase of fault dip angle and fault throw;when the fault dip is 75°and fault throw is 30 m,the abutment pressure peak reaches 47.3 MPa;with the advancing of working face,the closer the distance between the longwall face and the fault,the greater the abutment stress and the higher the impact risk.关键词
断层/冲击地压/构造应力/数值模拟/正交试验Key words
fault/rock burst/tectonic stress/numerical simulation/orthogonal experiment分类
矿业与冶金引用本文复制引用
李士栋,雷瑞德..采动影响下断层冲击危险数值模拟[J].煤矿安全,2017,48(3):40-43,47,5.
