深部高应力软岩巷道底臌机理及防治对策  

Mechanism of Floor Heave in Deep High Stress Soft Rock Roadway and Its Prevention and Control Measures

作　　者：徐峰 XU Feng(Wolonghu Coal Mine,Wanbei Coal Power Group,Huaibei 235000,China)

机构地区：[1]皖北煤电集团公司卧龙湖煤矿,安徽淮北235000

出　　处：《矿业工程研究》2021年第2期13-18,共6页Mineral Engineering Research

摘　　要：针对深部高应力软岩巷道围岩结构易失稳变形、易产生严重底臌,影响安全生产的问题,在分析卧龙湖煤矿南一底板轨道巷底臌机理与具体原因的基础上,提出底板锚网索联合支护技术,即在巷道底板轨枕中间布置底板锚杆,同时在巷道底板中部施工锚索对锚网支护承载结构进行结构性补偿,并使用钢筋梯子梁,加强底板承载结构的整体稳定性.实践表明该技术能有效控制高应力软岩巷道底臌破坏,实现巷道围岩长期稳定.Structure of surrounding rock for deep high stress soft rock tunnel excavation is easy to be buckled,deformed,and to be floor heaved,affecting production safety.This paper,based on the analysis of the mechanism of mine south floor heave rail lane and the concrete causes,puts forward the backplane anchor wire rope combined with the support technique,namely in the middle of the roadway floor sleeper arranges backplane anchor,at the same time has the structural compensation in the central floor of roadway construction of anchor cable for the anchor net supporting bearing structure.Reinforced ladder beam is used to strengthen the overall stability of the bearing structure of the bottom plate.Practice shows that this technique can effectively control the failure of floor heave in high stress soft rock roadway and realize the long-term stability of surrounding rock.

关 键 词：软岩 底臌 机理分析 锚网索 防治对策 

分 类 号：TD325[矿业工程—矿井建设]