动压巷道围岩应力及变形规律研究
Research on Stress and Deformation Laws of Surrounding Rock in Dynamic Pressure Tunnels
李国峰1
作者信息
- 1. 山西煤炭运销集团盖州煤业有限公司,山西 高平 048400
- 折叠
摘要
以盖州煤矿9106回风顺槽为研究对象,通过FLAC3D数值建模的方法对不同阶段下采掘施工对巷道围岩变形影响规律进行分析研究.分析结果表明:本巷道和顶回风巷在掘进时,巷道围岩出现应力集中现象,但是对围岩变形影响不大,邻近9105工作面回采时产生的集中破坏作用是造成9106回风顺槽煤柱垂直应力集中、侧向支承压力升高的主要原因,对巷道围岩变形具有很大影响.
Abstract
Taking the 9106 return air duct of Gaizhou Coal Mine as the research object,the influence of mining construction on the deformation of surrounding rock of the roadway at different stages was analyzed and studied using FLAC3D numerical modeling method.The analysis results show that during the excavation of this roadway and the top return airway,stress concentration occurs in the surrounding rock of the roadway,but it has little effect on the deformation of the surrounding rock.The concentrated destructive effect generated during the mining of the adjacent 9105 working face is the main reason for the vertical stress concentration and lateral support pressure increase of the 9106 return airway coal pillar,which has a significant impact on the deformation of the roadway surrounding rock.
关键词
动压巷道/围岩变形/数值模拟/应用分析Key words
dynamic pressure roadway/surrounding rock deformation/numerical simulation/application analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据