摘要
钱塘江两岸闸站众多,悬浮粉沙在强动力作用下,易在闸下回流区落淤,从而影响其正常运行,本文以出口位于坝田区的八堡泵站为例,通过泵站出口河段数值模拟和物理模型试验,对不排涝期闸下淤积和淤积后的冲沙效果进行了详细研究,并针对相似岸线条件下的滩地地形及高含沙量区闸下骤淤进行了实测淤积类比分析。研究结果表明:闸站关闭状态下,3个月枯水期后边滩可淤积至平均高潮位,落淤的粉沙体,在水泵效率较高的落潮低水位时段,经过上闸门的单泵单孔冲沙,可将排涝通道冲开。研究成果对河口区闸站的设计及后期运行维护具有参考意义。
There are many sluice stations on both sides of the Qiantang River,the sand in water often falling silt to the recirculation zone for the strong dynamic,and affects the safety of the sluice station.As the station entrance is in the dike field,full study is done on siltation downstream sluice gate at non-drainage period and the effect of sluicing sand for the Babao pumping station,through the method of numerical simulation and physical model.Analogy analysis for measured data is continue done from combine the topography of similar shoreline and siltation of high sediment concentration.The tests indicate that,in closed status for the sluice station,in dry season the beach can silt to the mean high tide level after three months.During low water period when pump efficiency is high,through the method of single-pump and single-hole flushing with the upper gate,can wash away the sand from the channel.Research results bring about the great significance for the design and management for sluice station at estuary.
作者
王瑞锋
张芝永
程文龙
曹颖
陈刚
Wang Ruifeng;Zhang Zhiyong;Cheng Wenlong;Cao Ying;Chen Gang(Zhejiang Institute of Hydraulics&Estuary,Hangzhou 310020,China;Zhejiang Provincial Key Laboratory of Estuary and Coast,Hangzhou 310020,China)
出处
《科技通报》
2021年第8期84-89,共6页
Bulletin of Science and Technology
基金
浙江省水利科技计划项目(RC1736)
关键词
钱塘江
闸站
八堡泵站
闸下淤积
冲沙
Qiantang river
sluice station
Babao pumping station
siltation downstream sluice gate
sluicing sand
作者简介
王瑞锋(1981-),男,河北临城人,本科,高级工程师,研究方向:河口海岸工程研究。E-mail:23250756@qq.com。
