藏区某水工隧洞涌泥成因分析及处理方案  

Cause Analysis and Treatment Scheme of Mud Gushing in a Hydraulic Tunnel in Xizang

作　　者：焦艳彬 王照英 陈建安 李鹏飞 张立威 刘广 JIAO Yanbin;WANG Zhaoying;CHEN Jianan;LI Pengfei;ZHANG Liwei;LIU Guang(Power China Guiyang Engineering Corporation Limited,Guiyang 550081,China;Huaneng Lancang River Hydropower Inc.,Kunming 650214,China)

机构地区：[1]中国电建集团贵阳勘测设计研究院有限公司,贵州贵阳550081 [2]华能澜沧江水电股份有限公司,云南昆明650000

出　　处：《云南水力发电》2024年第7期110-113,共4页Yunnan Water Power

基　　金：电建集团科研资助项目(DJ-ZDXM-2020-50)。

摘　　要：水工隧洞穿越砂泥岩地层发生的涌泥灾害严重制约工程进度并威胁施工安全,以藏区某水工隧洞涌泥为案例,通过采用物探探测、地质钻孔的探测方法,准确查明了隧洞涌泥成因,采用洞内回填石渣反压注浆、大管棚超前支护、超前小导管支护、钢拱架、预留核心土法短进尺逐榀开挖支护的处理方案,顺利通过了该不良地质洞段的施工。The mudslide disaster that occurs when a hydraulic tunnel passes through a sandstone and mudstone formation seriously restricts the progress of the project and threatens construction safety.Taking a hydraulic tunnel in Xizang as an example,the causes of mud influx in the tunnel were accurately identified through the use of geophysical exploration and geological drilling methods.It adopts a treatment plan of backfilling with stone slag and reverse pressure grouting inside the tunnel,advanced support for large pipe sheds,advanced support for small conduits,steel arches,and short advance excavation support with reserved core soil method,which has successfully passed the construction of unfavorable geological tunnel section.

关 键 词：水工隧洞 涌泥 不良地质洞段 处理方案 

分 类 号：TV554[水利工程—水利水电工程]