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
焦艳彬 1王照英 2陈建安 2李鹏飞 1张立威 1刘广1
作者信息
- 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
- 折叠
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.
Abstract
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Key words
hydraulic tunnel/mud gushing/unfavorable geological tunnel section/treatment scheme引用本文复制引用
基金项目
电建集团科研资助项目(DJ-ZDXM-2020-50)
出版年
2024
国家科技期刊平台
NSTL
万方数据