深埋矿山法隧道穿越岩层破碎带围岩稳定性研究
A Study on the Stability of Surrounding Rocks in Rock Fracture Zones for Tunnel Crossing with Deep Buried Mining Method
张朋 1冯学俊 2王学涛1
作者信息
- 1. 青岛市市政工程设计研究院有限责任公司,山东青岛 266000
- 2. 青岛瑞华工程咨询有限公司,山东青岛 266000
- 折叠
摘要
依托青岛地铁某区间深埋隧道穿越岩层破碎带工程,分析了隧道周围岩体变形机理,通过迈达斯有限元软件,对隧道开挖与支护过程中的围岩变形进行模拟分析,结合现场实际监测数据,对比分析得到:数值分析结果与实测数据相吻合,可以作为施工的依据;对于穿越岩层碎裂带的深埋隧道,拱顶及拱底是施工过程中围岩失稳的危险区域;采用本工程支护参数可以有效保证围岩—支护结构稳定性,为类似工程提供了工程经验.
Abstract
Based on the engineering of a deep buried tunnel crossing a rock fragmentation zone in a certain section of Qingdao Metro,the deformation mechanism of the surrounding rock mass of the tunnel was analyzed.Through the use of Midas finite ele-ment software,the deformation of the surrounding rock during tunnel excavation and support was simulated and analyzed.Com-bined with actual monitoring data on site,the comparative analysis showed that the numerical analysis results were consistent with the measured data,which can be used as a basis for construction;For deep buried tunnels that pass through rock fragmen-tation zones,the arch crown and arch bottom are dangerous areas for rock instability during construction;The use of support pa-rameters in this project can effectively ensure the stability of the surrounding rock support structure,providing engineering ex-perience for similar projects.
关键词
矿山法隧道/破碎带/稳定性Key words
mining method tunnel/broken zone/stability引用本文复制引用
出版年
2024
NETL
NSTL
万方数据