摘要
重庆奉节至巫溪高速公路上古隧道施工期间多次出现突涌水,其中部分段落涌水发生在支护衬砌完成之后,对已完成的支护衬砌造成了严重破坏。结合隧址区地层、构造、水文地质特征及突涌水的特点,对二次衬砌溃口原因进行了分析,研究了可能的处理方案,提出了"以排为主"的原则,主泄水洞与支泄水洞相连通的处治方案。泄水洞的实施,连通了岩溶管道,避免了因岩溶管道堵塞造成衬砌周围水压增大,引起二衬破坏的风险。由于泄水洞主要连通的是岩溶管道,同时采取了一定的限排措施,泄水洞的实施对地下水环境影响较小。
Sudden surge of water appeared many times in Shanggu Tunnel on Fengjie to Wuxi Expressway in Chongqing during construction, part of the water gushing occurred after the completion of tunnel lining which caused tunnel lining collapsed severely. Combined with the tunnel site stratum, structure, hydro-geological characteristics and the characteristics of the sudden surge water, the reasons of lining collapse are analyzed, possible treatment plans are studied, the principle of ＂given priority to drainage＂ is put forward, a treatment plan of linking the main drainage tunnel and branches is proposed. Due to the draining tunnel connecting the Karst conduit, some certain limiting draining measures are taken to minimize impact on the underground water.
出处
《公路》
北大核心
2013年第12期218-224,共7页
Highway
关键词
上古隧道
突涌水
衬砌溃口
处治方案
Shanggu Tunnel
sudden surge of water
lining collapse
treatment plan
