某输水隧洞阻水超前预注浆施工技术分析

Discussion on the Construction Technology of a Water Conveyance Tunnel Block Water Advanced Preliminary Grouting

涌水是水工隧洞施工中常见现象,涌水步进对作业环境有影响,也会使掌子面不稳定,影响锚喷混凝土的施工质量。特别是在有大量高压涌水的情况下,常常酿成重大事故。本文结合隧洞涌水处理的工程实例,分析了隧洞涌水产生的原因,提出了有针对性的处理方案,并顺利通过了涌水地段,取得了很好的效果,为类似工程的处理提供了参考经验。

Water gushing is a common phenomenon in the construction of hydraulic tunnel,gushing water influences the working environment,and can also make the tunnel face not stable,affects the construction quality of anchor spray cement concrete.Especially in the case of a large number of high pressure water gushing,it often leads to major accidents.This paper combined with the project of tunnel gushing water treatment,analyzed the causes of tunnel water gushing,proposed targeted treatment scheme,and smoothly passed the water gushing area,achieved good results,which provides reference for similar projects treatment.