南水北调中线输水渠道中节制闸影响研究  

Study on effect of control gate on Mid-route of South-to-North Water Transfer Project

作　　者：方神光[1] 吴保生[1] 

机构地区：[1]清华大学水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《水利水电技术》2008年第2期32-35,39,共5页Water Resources and Hydropower Engineering

基　　金：中国博士后科学基金资助项目(20060390078)

摘　　要：选取南水北调中线干渠中西黑山节制闸为研究对象,应用一维非恒定圣维南模型,模拟计算了11种不同闸门开度变化时的干渠全线中非恒定过渡过程。结果显示,初始一段时间内的闸前后水位变化幅度取决于闸门运动速度和闸门开度变化幅度,得到了不同闸门开度变化幅度下的闸门限制运动速度。闸门停止运动后,闸前后的水位和闸下出流量主要取决于闸门开度变化幅度,与闸门变化速度无关。相同开度变化幅度下,闸门开度减小对上游的影响距离大于闸门开度增大的工况。Taking Xiheishan Control Gate on the main channel of the Mid-route of South-to-North Water Transfer Project as a studying case, 11 transition processes of the unsteady flows of the whole channel under various openings of the gate are simulated based on one-dimensional Saint-Venant model. The study shows that the up and down-stream water levels of the gate are changed along with the regulating opening speeds and the openings of the gate during the initial operation period, and then the controling operation speeds of the gate under different openings are obtained. Furthermore, both the up and down-stream water levels of the gate and the discharge downstream of the gate mainly depend on the change of the openings of the gate and are independent of the operation speed of the gate. Under the same opening change, the distance upstream of the gate affected by the decrease of the opening of the gate is larger than that of the increase.

关 键 词：非恒定流 数学模型 节制闸 流量 南水北调中线 西黑山节制闸 

分 类 号：TV134[水利工程—水力学及河流动力学]