双戗堤截流条件下戗堤间水位变化分析及模型试验研究  

Research and Analysis on Water Level Variational Regularity during River Closure End-tipped with Double Embankments and Its Physical Model Test

作　　者：范锡峨[1] 胡志根[1] 刘全[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《华北水利水电学院学报》2006年第3期11-14,共4页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：国家自然科学基金资助项目(50579056)

摘　　要：计算双戗堤立堵截流龙口水力要素时,提出用非恒定流计算方法求解戗堤间恒定流动时的水面线,分析龙口流速变化规律,研究上戗堤、下戗堤进占时截流落差分配之间的关系,降低上戗堤合龙难度,提出相应的双戗堤截流优越性判断方法.通过物理模型试验分析截流过程中戗堤间水位变化规律,分析双戗堤截流机理,验证双戗堤立堵截流水力控制条件及其双戗堤优越性判断方法的正确性.A steady flow is solved as an unsteady flow is when hydraulic parameters of river closure gap are calculated in order to offer method of calculating closure. On the basis of analyzing the regularity of river closure gap flow velocity, the optimal distance between upriver and downriver embankments and fall head of water distribution is advanced. A judging method of river closure with double embankments is put forward. Variational regularity of water level between double embankments is analyzed through physical model test, which proves that the formula that controls river closure using double embankments and the method judging superiority of two embankments is reasonable.

关 键 词：立堵截流 双戗堤 非恒定流 物理模型 

分 类 号：TV551.2[水利工程—水利水电工程]