摘要
选择合理的隧道净距值是小净距隧道工程设计的关键所在。本文以武汉地铁二号线矿山法施工隧道为研究对象,用数值模拟分析软件计算分析了不同净距条件下,后行洞施工时,先行洞围岩的力学及变形发展规律,通过分析中夹岩受力、地表沉降、拱底隆起和拱顶沉降这四个重要指标与净距的关系,综合分析确定满足安全与经济的合理净距取值,研究结论可为类似工程设计与施工提供一定参考。
Choosing a reasonable tunnel distance is the key to the engineering design of the small interval tunnel. In this paper, taking Line 2 of Wuhan subway as an example, the nu- merical simulation analysis software is used to analyze the mechanics of the surrounding rock hole and the development of. the deformation under different interval conditions and during the final construction. Through the analysis of rock stress, tunnel ground subsid- ence, arched bottom uplift and vault settlement, the research result can certain reference for engineering design and construction.
出处
《工程地球物理学报》
2012年第5期619-623,共5页
Chinese Journal of Engineering Geophysics
基金
中国地质大学(武汉)中央高校基本科研业务费专项资金资助项目(编号:1210491A13)资助
关键词
小净距隧道
中夹岩
数值模拟
合理净距
small interval tunnel
containing rock
numerical simulation
reasonable interval
