洪水期小浪底水库排沙影响因素及规律研究
Study on the Influencing Factors and Regularities of Sediment Discharge in Xiaolangdi Reservoir During Flood Period
王婷 1王振凡 2李珍 2马怀宝 1贾梦豪1
作者信息
- 1. 黄河水利科学研究院,河南 郑州 450003;水利部黄河下游河道与河口治理重点实验室,河南 郑州 450003
- 2. 黄河水利水电开发集团有限公司,河南 济源 459017
- 折叠
摘要
小浪底水库排沙主要集中在汛前调水调沙期和汛期洪水期.2000-2022 年汛前调水调沙期和汛期洪水期小浪底水库累计排沙分别为 4.840 亿t和 21.546 亿t,分别占水库运用以来排沙总量的 18.3%、81.5%.研究表明,入库水量与回水长度是影响汛前调水调沙期小浪底水库排沙效果的主要因素;入库水量越大,回水长度越短,排沙效果越好.通过多元回归得到了汛前调水调沙期小浪底水库排沙量与影响因素的关系.汛期洪水期小浪底水库排沙主要影响因素为壅水指标和进出库流量比,通过研究量化了汛期洪水期排沙比与影响因素的关系.
Abstract
The sediment discharge of Xiaolangdi Reservoir is mainly concentrated in the pre-flood water and sediment regulation period and flood period.From 2000 to 2022,the accumulated sediment discharge during the pre-flood water and sediment regulation period and flood pe-riod of Xiaolangdi Reservoir were 484 million tons and 2.154 6 billion tons,accounting for 18.3%and 81.5%of the total sediment discharge since the reservoir was put into operation respectively.The research results show that the inflow volume and return flow length are the main factors affecting the sediment discharge effect of Xiaolangdi Reservoir during the pre-flood water and sediment regulation period.The greater the inflow volume is,the shorter the length of backwater and the better the sediment removal effect will be.The relationship between the sedi-ment discharge volume of Xiaolangdi Reservoir during the pre-flood water and sediment regulation period and the influencing factors is ob-tained by using multiple regression.The main influencing factors of sediment discharge of Xiaolangdi Reservoir during the flood period are the dammed water index and the inflow-outflow ratio.Through research,the relationship between the sediment discharge ratio during flood period and the influencing factors have been quantified.
关键词
调水调沙/排沙/回水长度/壅水指标/小浪底水库Key words
water and sediment regulation/sediment discharge/return flow length/damming water index/Xiaolangdi Reservoir引用本文复制引用
基金项目
国家重点研发计划(2021YFC3200400)
黄河水科学研究联合基金(U2243241)
河南省自然科学基金(222300420495)
河南省自然科学基金(202300410540)
中央级公益性科研院所基本科研业务费专项(HKY-JBYW-2022-06)
中央级公益性科研院所基本科研业务费专项(HKY-JBYW-2019-13)
水利部重大科技项目(SKS-2022088)
出版年
2024
国家科技期刊平台
NSTL
万方数据