摘要
为保障辛置煤矿2-208运输顺槽近断层区域围岩稳定,采用FLAC3D数值模拟软件进行近断层区域围岩变形特征分析,根据数值模拟结果确定,运输顺槽在近断层区域围岩主要表现为非对称变形,其中靠近断层一帮和底板的变形量及塑性区发育范围相对较大,基于数值模拟结果,确定围岩的支护原则及措施,结合巷道特征进行具体支护方案的设计,并在巷道掘进期间进行表面位移监测。结果表明:支护方案实施后,巷道近断层区域围岩变形量较小,支护方案保障了围岩的稳定。
In order to ensure the stability of surrounding rock near the fault area of 2-208 crossheading in Xinzhi Colliery,the author analyzes the surrounding rock deformation characteristics by FLAC3D numerical simulation software,determining the surrounding rock mainly behaves as asymmetric deformation,in which the deformation amount near the fault and the floor and the development range of the plastic zone are relatively large;and proposes the supporting principles,measures and the specific supporting scheme in conjunction with the roadway characteristics,which can reduce the deformation near the fault zone and guarantee the stability of the surrounding rock through surface displacement monitoring during tunneling.
作者
侯国强
Hou Guoqiang(HuoFen Design Consulting Co.,Ltd.,Huozhou Coal&Electricity Group.,Huozhou,Shanxi 031410)
出处
《江西煤炭科技》
2020年第3期93-96,共4页
Jiangxi Coal Science & Technology
关键词
断层破碎带
支护设计
数值模拟
围岩变形
表面位移
fault fracture zone
support design
numerical simulation
surrounding rock deformation
surface displacement
