摘要
新沭河河口段治理包括三洋港建闸和不建闸两种方案.由于受上游径流和下游潮汐的综合作用,两种方案都不可避免产生泓道淤积.通过建立平面二维水沙数学模型,计算分析了两种方案河道泥沙冲淤状况,比较冲淤前后河道行洪水位.计算结果表明,淤积15年后行洪设计流量6 400 m3/s时,三洋港建闸方案太平庄闸下水位较不建闸方案低0.44 m,建闸方案的河道水位抬高明显小于不建闸方案,从行洪安全角度论证三洋港建闸的必要性.并从滩地利用、淡水资源、运营管理费用等多方面综合比较了两种方案的优劣.
Regulation at the estuary of Xinshu River has two options： building or not building Sanyanggang flood gate. Because of interaction of runoff and tide, deposition in the channel is unavoidable in either case. 2D flowsediment numerical model is used to simulate the amount of sediment, and compare water lever changes due to sedimentation. After fifteen years＇ deposition, water level downstream of Taipingzhuang gate in the building option is 44 cm lower than that of non-building option. In the aspect of flood control safety, Sanyanggang flood gate is necessary. Besides, two options are compared in the aspects of beach utilization, freshwater resource and operation expense.
出处
《水利水运工程学报》
CSCD
北大核心
2009年第2期61-67,共7页
Hydro-Science and Engineering
关键词
数学模型
泥沙淤积
行洪
滩地
三洋港挡潮闸
numerical model
sediment deposition
flood control
beach utilization
Sanyanggang gate
