[关键词]
[摘要]
为解决萧山史家桥河河道淤积问题, 提出了在整治的河道前段设置沉砂池的方案, 以实现沉降泥沙, 净化水质 的目的。通过采用水流泥沙数学模型, 在史家桥河实测水文泥沙数据和沉沙池初步设计方案等条件的基础上, 模拟 分析了引水后沉沙池内泥沙的运动变化规律。结果表明: 引水后, 沉沙池内含沙量呈现先上升后下降的趋势, 且右 岸的淤积较明显。该模型应用可为本区域今后沉砂池的优化及河道整治提供技术支持。
[Key word]
[Abstract]
To solve the pro blem o f channel deposit ion in the Shijiaqiao River due to water div ersion of the Qiantang River , the de2 sig n scheme w ith g r it chamber is considered to be applied to settle the sediment and purify the w ater qualit y. Based on the actual measured hydro log ical data o f the Qiantang Riv er and Shijiaqiao Riv er as well as the preliminar y desig n scheme of g r it chamber, the sediment movement in t he gr it chamber w as simulated and analyzed using the flow and sediment mo del after the sett ling ba2 sin w as established. The r esults show ed that sediment co ncentration incr eases fir st and then decreases, and sedimentatio n on the rig ht bank is mo re obvio us. The r esear ch can prov ide technica l suppo rt for t he fut ur e o ptimization of gr it chamber and river reg2 ulat ion project.
[中图分类号]
[基金项目]
浙江省科技计划项目/ 钱塘江引水工程排沙技术研究0 (RB1209)