陕西煤炭2025，Vol.44Issue(6)：67-71,5.DOI:10.20120/j.cnki.issn.1671-749x.2025.0612
煤矿巷道顶板离层机理分析与支护关键技术研究
Separation mechanism of coal mine roadway roof and key technologies of support
白航 1邓亮 1杨文2
作者信息
- 1. 陕西小保当矿业有限公司,陕西榆林 719399
- 2. 神木市能源局,陕西榆林 710006
- 折叠
摘要
Abstract
For dealing with the safety problems caused by roof separation,we analyze its mechanism,optimize roadway sup-port and give early warning to such accidents.Based on the engineering background of a working face material roadway in Sipan area of a mine,the influences of roadway span,height,ground stress and bending stiffness of surrounding rock are ana-lyzed through theoretical analysis and numerical simulation.The pseudo-roof height and direct roof separation height are ob-tained at 43 m through numerical simulation,and combined support with anchor net beam is adopted according to the sup-porting mechanism of large-section roadway.High prestressed anchor cable and grouting bolt cable are used to optimize sup-port and grouting maintenance in the broken separated layer area,which greatly reduces the amount of roof separation,the breaking of key layer and the surface settlement caused by the separated layer.The roadway safety is greatly improved by monitoring according to the critical value and early warning value of the roof separation layer.关键词
顶板离层/离层机理/支护设计/数值模拟/注浆锚索/离层预警Key words
roof separation layer/separation mechanism/support design/numerical simulation/grouting anchor cable/early warning of separation分类
矿业与冶金引用本文复制引用
白航,邓亮,杨文..煤矿巷道顶板离层机理分析与支护关键技术研究[J].陕西煤炭,2025,44(6):67-71,5.
