摘要
随着矿井开采深度的增加,深部高应力软岩巷道受各种因素的影响,变形越来越剧烈,破坏严重,其支护问题越来越突出。本文以-750轨道大巷为工程背景,分析了大巷变形破坏特征及原因,基于此提出了巷外掘巷卸压技术;通过FLAC3D数值模拟,得出侧下角卸压方案可兼顾卸压效果和经济效益,对巷道同时采取锚注支护,通过工程实践,巷道围岩变形处于可控范围,治理效果明显。
As the depth of mining depth increases, the deep and high stress soft rock roadway is affected by various factors, the deformation becomes more and more intense, the damage is serious, and its support problem is becoming more and more prominent. This paper analyzes the characteristics and causes of the deformation and failure of the roadway, based on the project background of-750 orbital roadway. By FLAC3 D numerical simulation, it is concluded that the lateral Angle under unloading plan consider the unloading effect and economic benefit,the roadway anchor support taken at the same time, through the engineering practice, surrounding rock deformation of roadway in a controllable scope, the control effect is obvious.
出处
《煤矿现代化》
2018年第3期121-124,共4页
Coal Mine Modernization
基金
山西省平台基地和人才专项项目(优秀人才科技创新项目)(201605d211003)
山西省高等学校创新人才支持计划项目
山西省煤基重点科技攻关项目(mq2014-12)
关键词
软岩巷道
巷外掘巷
卸压
FLAC3D
围岩变形
Soft rock roadway
roadway
unloading pressure
FLAC3D
surrounding rock deformation
