断层破碎带巷道变形分析与优化支护设计
Deformation Analysis and Optimized Support Design of Roadway in Fault Fracture Zone
岳江伟1
作者信息
- 1. 山西介休义棠青云煤业有限公司,山西 介休 032000
- 折叠
摘要
断层是煤矿开采过程中常见的地质构造之一,受断层破碎带影响的巷道稳定性差、变形严重.通过对青云煤矿020202 工作面运输顺槽YF1断层破碎带的变形特征进行分析,探讨了该断层带裂隙发育的情况,可以得知,其由于少量渗水导致了断层带泥化、承载力下降,从而造成了巷道变形.针对该情况,优化了支护设计,在巷道底板增加了注浆锚索,提高了巷道围岩的承载力和稳定性,不仅保证了工作面的安全生产,而且为后续巷道过断层提供了技术参考.
Abstract
Fault is one of the common geological structures in coal mining,and the stability and deformation of roadways affected by fault fracture zones are poor.By analyzing the deformation characteristics of the YF1 fault fracture zone in the transportation channel of 020202 working face of Qingyun Coal Mine,the development of cracks in this fault zone was explored.It could be inferred that due to a small amount of water seepage,the fault zone became muddy and the bearing capacity decreased,resulting in deformation of the roadway.In response to this situation,the support design was optimized,and grouting anchor cables were added to the roadway floor,improving the bearing capacity and stability of the surrounding rock of the roadway.This not only ensures the safe production of the working face,but also provides technical reference for subsequent roadway fault crossing.
关键词
断层破碎带/巷道变形/泥化/巷道支护/注浆锚索Key words
fault fracture zone/roadway deformation/argillization/roadway supporting/grouting anchor cable引用本文复制引用
出版年
2024
NETL
NSTL
万方数据