广西水利水电Issue(2)：14-20,7.
七里水库大坝坝基蚀变带工程性质与坝基处理研究
Research on engineering properties of dam foundation alteration zone and foundation treatment for Qili Reservoir
林茂桂 1陈启湖 2陈水连 2宋恒锋2
作者信息
- 1. 广西桂禹工程咨询有限公司,南宁 530023
- 2. 广西桂东水电勘测设计院有限责任公司,广西 梧州 543006
- 折叠
摘要
Abstract
The new dam foundation of Qili Reservoir spans two different lithological rock masses of sedimentary rocks and granite.An alteration zone developed at the contact surface between granite and sedimentary rocks has poor engineering geological properties,and is considered a weak interlayer in the dam foundation.Multiple explora-tion methods such as drilling,acoustic logging,borehole television and laboratory tests were used to determine the spatial distribution and engineering properties of the alteration zone within the scope of dam foundation.Comprehen-sive treatment measures were adopted for this alteration zone including shallow excavation and concrete plugs,rein-forced concrete slabs laid on top,and curtain grouting for the deep position of alteration zone.These measures have improved the engineering properties of the alteration zone,reduced uneven settlement of the dam foundation and in-ternal stress within the dam,achieving satisfactory results.关键词
蚀变带/帷幕灌浆/混凝土塞/钢筋混凝土板/七里水库Key words
alteration zone/curtain grouting/concrete plug/reinforced concrete slab/Qili Reservoir分类
建筑与水利引用本文复制引用
林茂桂,陈启湖,陈水连,宋恒锋..七里水库大坝坝基蚀变带工程性质与坝基处理研究[J].广西水利水电,2025,(2):14-20,7.
