桃源河水库溢洪道体型优化试验研究  

Experimental study on shape optimization of spillway of Taoyuan river Reservoir

作　　者：黄谦 曹广学[1] 王军[1] HUANG Qian;CAO Guang-xue;WANG Jun(School of Civil and Hydraulic Engineering,Heifei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《江淮水利科技》2022年第1期16-19,共4页Jianghuai Water Resources Science and Technology

基　　金：霍山县桃源河水库工程水工模型试验(W2021JSFW0222)

摘　　要：通过对桃源河水库工程进行水工模型试验,验证溢洪道布置方式的合理性和优化的可能性。溢洪道采用挑流消能方式进行泄洪。受坝址选择的影响,溢洪道位于河流弯道上,为了使得挑流水舌落入河道,初步考虑采用右边墙偏转4°的方案,试验结果表明,挑流水舌入水点偏向右岸河道,随着下泄流量不断增大,水舌入水点逐渐向右岸山坡偏移,在河道右侧形成范围和强度较大的回流,同时不断冲击右岸岸坡,对岸坡的安全稳定造成一定影响。针对这种现象,提出了5种优化方案,通过试验对比5种优化方案下的水流流态、水舌、冲刷坑深度等参数,结果表明,右边墙偏转6.9°,左边墙偏转8.6°,中间为高坎的差动式方案最佳,起到了设计优化的效果,也为其他同类工程提供参考和借鉴。Through the hydraulic model test of Taoyuan river Reservoir project,the rationality of spillway layout and the possibility of optimization are verified.The spillway adopts the method of energy dissipation by means of flow-dissipation for flood discharge.Affected by the selection of the dam site,the spillway is located on the bend of the river.In order to make the deflector tongue fall into the river channel,the plan of deflecting the right wall by 4°was initially considered.With the continuous increase,the water entry point of the water tongue gradually shifted to the right bank slope,forming a backflow with a large scope and intensity on the right side of the river channel,and at the same time,it continuously impacted the right bank slope,which had a certain impact on the safety and stability of the bank slope.In view of this phenomenon,five optimization schemes are proposed.The parameters of water flow,water tongue,and scour pit depth under the five optimization schemes are compared through experiments.The results show that the deflection of the right wall is 6.9°,and the deflection of the left wall is 8.6°.The differential scheme with high sill is the best,which has the effect of design optimization,and also provides reference and reference for other similar projects.

关 键 词：模型试验 水流流态 水舌特性 冲刷坑 

分 类 号：TV651.1[水利工程—水利水电工程]