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
王振凡 1王强 2董庆豪 3王忠强 1王远见 2李新杰2
作者信息
- 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;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
- 3. 郑州大学 水利与交通学院,河南 郑州 450001
- 折叠
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.
Abstract
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 Res-ervoir from 2011 to 2022,this paper made an in-depth analysis of the sediment discharge process and influencing factors of Xixianyuan Res-ervoir 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 affect-ed by the variation coefficient of discharge along the flow and the sediment discharge in the reservoir,and the sediment discharge ratio is sig-nificantly 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Key words
reservoir sedimentation/reservoir sediment discharge/sediment delivery ratio/sediment content/Xixiayuan Reservoir引用本文复制引用
基金项目
国家自然科学基金资助项目(U2243215)
国家自然科学基金资助项目(52309091)
国家自然科学基金资助项目(U2243236)
水利部重大科技项目(SKR-2022021)
出版年
2024
国家科技期刊平台
NSTL
万方数据