闸上河道规模对行洪影响分析  

An Analysis of the Influence of River Scale on Flood Discharge

作　　者：包中进[1] 王自明[1] 韩晓维[1] 史斌[1] BAO Zhong-jin;WANG Zi-ming;HAN Xiao-wei;SHI Bin(Zhejiang Water Conservancy and Estuary Research Institute,Hangzhou 310020,China;Zhejiang Key Laboratory of Estuarine and Coastal Areas,Hangzhou 310020,China)

机构地区：[1]浙江省水利河口研究院浙江省河口海岸重点实验室,杭州310020

出　　处：《中国农村水利水电》2020年第9期217-221,共5页China Rural Water and Hydropower

基　　金：浙江省省属科研院所扶持经费资助项目“感潮河网快速排涝技术研究”;浙江省水利河口研究院院长基金项目(水工A19003);浙江省自然科学基金项目(Y20E090006)。

摘　　要：闸坝工程建设后往往会抬高上游河道洪水位,对两岸的防洪不利,因此需要采取应对措施以抵消其不利影响。以某工程建设拦河闸枢纽为例,采用平面二维数学模型,对两种方案沿程洪水位变化、影响范围以及洪水过程线的变化进行了分析。研究表明:拦河闸闸上河道规模扩大后,库区上游500~1000 m左右水位较常规方案有所抬高,但是幅度不大,库区上游1 km以外4~8 km范围内水位较常规方案大幅度降低,防洪效益明显。上游通过扩大闸前河道规模的方法,可达到既满足供水要求又能降低上游洪水位的目的。研究成果可供类似工程参考应用。The construction of sluice gates,the flood level along the upper reaches of the river is often raised.Therefore,measures need to be taken to offset its adverse effects.Taking the upstream construction of a city's sluice as an example,a two-dimensional mathematical model nested by size model is adopted.The changes of flood level,impact range and flood hydrograph along the two schemes are analyzed.The results show that the water level of 500~1000 m upstream of the reservoir area is higher than that of the conventional scheme after the scale of the upper channel of the sluice gate is enlarged,but the range is not large.In the upper reaches of the reservoir area,the water level in the range of 4~8 km away from 1 km is significantly lower than that in the conventional scheme,and the flood control benefit is obvious.By enlarging the scale of the river channel in front of the sluice gate,the upstream flood level of the sluice gate can be reduced as well as the water supply requirement.The research results can be used for reference in similar projects.

关 键 词：闸坝枢纽 河道规模 二维数模 洪水过程 影响范围 

分 类 号：TV61[水利工程—水利水电工程] TV851