大宁水库泵站前端清淤技术应用分析
Application analysis of dredging technology at the fore-end of pumping station of Daning Reservoir
刘天祎 1廖启扬 1杨亚南 1李跃 1商奎 1于天昊1
作者信息
- 1. 北京市南水北调大宁管理处 北京 102442
- 折叠
摘要
为解决大宁水库泵站前端因"23·7"洪水及多年运行产生的严重淤积问题,采用技术方案比选及效果验证等方法,开展水库泵站和中堤泵站清淤技术应用分析研究.基于工期及成本约束,综合考虑泵站前端部位特点,经技术优化筛选,采用水下清淤和干场清淤相结合的方式,运用组装式清淤装置及水利冲挖机组抽取施工,结果表明:中堤泵站清淤量为4455 m3,占淤积量的91.10％;水库泵站清淤量为8 054 m3,占淤积量的90.70％;总清淤量为1.250 9万m3,占比90.84％,清淤效果满足规范要求,进一步保障输水安全.
Abstract
To address the severe siltation problem at the fore-end of the pumping station of Daning Res-ervoir due to the"23.7"flood and many years of sedimentation,the analysis and research on the applica-tion of desilting technology for the pumping station of the reservoir and the pumping station of the middle embankment were conducted through the selection of technological solutions and verification of their ef-fects.Considering the construction period and cost constraints,as well as the characteristics of the front part of the pumping station and the technology optimization screening,the combination of underwater desilting and dry field desilting was adopted.The assembled desilting devices and hydraulic flushing and dredging units were used for sediment extraction.The desilting amount in the middle embankment pump-ing station was 4,455 m3,accounting for 91.10％of the siltation volume;the reservoir pumping station desilting volume of 8,054 m3,accounting for 90.70％of the siltation volume;the total desilting volume was 1.250 9 million m3,accounting for 90.84％.The desilting effect met the specification requirements and further ensured the water transmission safety.
关键词
水下清淤/干场清淤/组装式清淤装置/中堤泵站/大宁水库泵站Key words
underwater desilting/dry field clearance/assembled desilting unit/Middle Embankment Pumping Station/Daning Reservoir Pumping Station引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据