福建某县泄洪隧洞工程地质及水文地质条件分析

Analysis on Engineering Geological and Hydrogeological Condition of Flood Discharge Tunnel in a County of Fujian Province

福建某县炭坑溪呈不规则弯曲、深切状,分布在拟建南三环路与南二环路区段,困扰着该区段的交通路网布置和新区规划建设。为疏畅河道及解决新区规划问题,确定在炭坑溪南三环路上游侧筑坝拦水,拦截上游来水,经新建泄洪隧洞排水至蓝溪。此次设计泄洪隧洞工程是项目的重要组成部分,探究其工程地质及水文地质条件是必不可少的环节。文章以该泄洪隧洞工程为例,通过调查、钻探、野外原位测试、水文地质试验、室内(外)土工试验等方法对其工程地质及水文地质条件进行了深入探究,以期为类似工程提供参考和借鉴。

Tankeng Creek in a county of Fujian Province is irregularly curved and deeply cut,distributed in the section of the proposed South Third Ring Road and the South Second Ring Road,which troubles the layout of the transportation road network and the planning and construction of the new area in this section.In order to dredge the river channel and solve the planning problem of the new area,it is determined to build a dam on the upstream side of the South Third Ring Road of Tankeng Creek to intercept the upstream water,and discharge it to the Blue Creek through a newly-built flood discharge tunnel.The design of flood discharge tunnel engineering is an important part of the project,and it is an indispensable link to explore its engineering geological and hydrogeological conditions.Taking the flood discharge tunnel engineering as an example,this paper makes an in-depth exploration of its engineering geological and hydrogeological conditions through investigation,drilling,field in-situ test,hydrogeological test,indoor(outdoor)geotechnical test and other methods,in order to provide reference for similar engineering.