广西水利水电Issue(5)：74-77,4.
罗寨水库软岩隧洞超前注浆预衬砌支护设计
Design of advanced grouting pre-lining support for the soft rock tunnel of Luozai Reservoir
陈水连 1何珍明 2黄荫旺3
作者信息
- 1. 广西桂东水电勘测设计院有限责任公司,广西 梧州 543002
- 2. 广西桂禹工程咨询有限公司,南宁 530023
- 3. 广西柳州水利电力勘测设计院,广西 柳州 540000
- 折叠
摘要
Abstract
The exposed strata of the newly built flood discharge tunnel of Luozhai Reservoir mainly consists of Qua-ternary residual slope accumulation soil layer and completely weathered～intensely weathered granite from the Hi-malayan period.The stability of the surrounding rock throughout the entire section of the tunnel is poor,and col-lapse is highly likely to occur during the construction process.For this project,small pipe sheds were first used to pre-support the area outside the tunnel excavation contour line;then arch top mortar anchor rods,steel mesh and C25 concrete spraying were adopted for reinforcement;finally,C30 reinforced concrete was used for the full cross-section lining.The strength of the surrounding rock had been significantly enhanced after pre-support.The small pipe shed can effectively prevent the collapse of surrounding rock at the initial stage of excavation,create favorable conditions and a relatively safe space for the excavation and initial support of the tunnel,and achieve good results.关键词
软岩/隧洞/小管棚/超前注浆衬砌/罗寨水库Key words
soft rock/tunnel/small pipe shed/advanced grouting lining/Luozai Reservoir分类
建筑与水利引用本文复制引用
陈水连,何珍明,黄荫旺..罗寨水库软岩隧洞超前注浆预衬砌支护设计[J].广西水利水电,2025,(5):74-77,4.
