西霞院水库场次洪水排沙规律及影响因素  

Sediment Delivery Regularity and Its Influencing Factors During Flood Events in the Xixiayuan Reservoir

作　　者：王振凡 王强 董庆豪 王忠强 王远见[2,3] 李新杰 WANG Zhenfan;WANG Qiang;DONG Qinghao;WANG Zhongqiang;WANG Yuanjian;LI Xinjie(Yellow River Hydropower Development Corporation,Zhengzhou 450099,China;Yellow River Institute of Hydraulic Research,YRCC,Zhengzhou 450003,China;Henan Provincial Engineering Research Center of Reservoir-Lake Function Restoring and Maintaining,Zhengzhou 450003,China;School of Water Conservancy and Transportation,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]黄河水利水电开发集团有限公司,河南郑州450099 [2]黄河水利委员会黄河水利科学研究院,河南郑州450003 [3]河南省湖库功能恢复与维持工程技术研究中心,河南郑州450003 [4]郑州大学水利与交通学院,河南郑州450001

出　　处：《人民黄河》2024年第10期38-43,共6页Yellow River

基　　金：国家自然科学基金资助项目(U2243215,52309091,U2243236);水利部重大科技项目(SKR-2022021)。

摘　　要：西霞院水库作为小浪底水库的反调节水库,在调节小浪底水库下泄的不稳定流方面起着重要作用。西霞院水库自运行以来,水库呈持续淤积趋势,研究西霞院水库排沙能力对于减缓水库淤积具有重要意义。基于西霞院水库2011—2022年实测水沙资料,对西霞院水库的历年排沙过程以及排沙影响因素进行深入分析,结果表明:西霞院水库排沙受水库运用方式、来水来沙条件等多种因素影响;流量沿程变化系数、入库含沙量对水库排沙比影响较大,且排沙比与流量沿程变化系数显著正相关,与入库含沙量显著负相关;选取流量沿程变化系数、入库含沙量两个显著相关的参数,通过回归分析建立水库排沙比计算公式,决定系数为0.79,排沙比计算值与实测值拟合效果较好。Xixiayuan Reservoir,as a counter-regulating reservoir of Xiaolangdi Reservoir,plays an important role in regulating the unsteady flow of Xiaolangdi Reservoir.Since the operation of Xixiayuan Reservoir,the reservoir has shown a continuous trend of siltation.It is of great significance to study the siltation removal capacity of Xixiayuan Reservoir.Based on the measured water and sediment data of Xixianyuan Reservoir from 2011 to 2022,this paper made an in-depth analysis of the sediment discharge process and influencing factors of Xixianyuan Reservoir over the years.The research results show that the sediment discharge of Xixianyuan Reservoir is affected by multiple factors such as the reservoir operation mode and the conditions of incoming water and sediment.The sediment delivery ratio of the reservoir is significantly affected by the variation coefficient of discharge along the flow and the sediment discharge in the reservoir,and the sediment discharge ratio is significantly positively correlated with the variation coefficient of discharge along the flow and negatively correlated with the sediment discharge in the reservoir.The empirical formula of sediment discharge is established by regression analysis,with the coefficient of determination of 0.79,and the fitting effect is good.

关 键 词：水库淤积 水库排沙 排沙比 含沙量 西霞院水库 

分 类 号：TV145[水利工程—水力学及河流动力学] TV882.1