water intercepting ditch

Taking the defect treatment of Shidaoshan tunnel and Gaoshan tunnel on Hefei-Caohu-Wuhu highway as example,the author presents the methods,principles,construction workmanship and attention points of the treatment of the seepage/leakage defects of tunnels by means of water intercepting trench method,which can provide reference for similar works in the future.

截水槽法是隧道水害整治中一种方式,结合合巢芜高速公路试刀山,高山隧道病害整治工程,介绍了截水槽法工作原理、在不同的条件下应使用的截水槽类型及截水槽的施工工艺、注意事项,给类似工程提供借鉴。

Considering the characteristics of wet-collapsible loess and the real conditions of deep loess,such as high topography,deep water table and low water content,a set of novel integrative treatment technology that includes impedance,drainage,interception,truncation and infiltrati.

结合深厚湿陷性黄土地基具有地势高、地下水位深、含水量低的条件,提出了浅层阻水、浅层排水、浅层防水、围封截水和竖井深层导水的综合整治新技术。

Circumferential catchwater of tunnel opening is an easily neglected part in tunnel system.

隧道洞口顶环向截水沟是隧道工程系统中容易被忽略的部分,事实上洞顶截水沟对洞口仰坡和洞周围岩的稳定性都有重要的影响,针对洞顶截水沟设置中普遍存在的问题,根据大量现场调查,总结了截水沟修筑设置中应该注意的一些细节,并就截水沟设置存在的利弊问题进行分析,得出了有益结论,以资工程参考。