高地应力软岩隧道施工中常见病害及处治措施

 吴宪富 

(中交二公局第三工程有限公司,陕西 西安,71016

  要:近年来伴随我国经济建设的腾飞,高速公路、高速铁路等基础设施建设快速发展,中西部山区规划的高速公路越来越多,全线的桥隧比很多路段都达到80%以上,而隧道工程因其地质条件复杂,施工难度大,安全风险高,突发状况多,技术储备不足等原因,往往是全线的控制性工程。本文结合连城山隧道施工实践,着重介绍了高地应力软弱围岩隧道施工常见病害类型及初期支护侵限、仰拱隆起开裂、二衬开裂等的预防及拆换施工方案,其结果可为同类隧道施工提供参考。

关键词:隧道施工;高地应力;软岩;病害处治

中图分类号:U455         文献标识码:

 

Common Diseases and Treatment Measures in High Rock Stress Soft Rock Tunnel Construction

WU Xian-fu

(CCCC-SHEC Third Highway Engineering Co.LTD.Xian 71016 China)

AbstractIn recent years, with the rapid development of China's economic construction, highways, high-speed railway and other infrastructure construction, the Midwest mountain area planned more and more highways, and more than 80% of the bridge and tunnel across the board. Tunnel works are often across the board control project because of its complex geological conditions, difficult construction , high security risks, sudden situation, lack of technical reserves and other reasons. Combined with the practice of Liancheng Mountain tunnel, the prevention and replacement construction of common disease types and initial support infiltration, inversion and inversion of the archile roof, and so on were mainly introduced, whose results can be used to provide reference for the similar tunnel construction.

Key words: tunnel construction; high ground stress; soft rock; disease treatment