小浪底水库运用以来进出库泥沙分析  

Analysis of Inlet and Outlet Sediment in Xiaolangdi Reservoir Since Operation

作　　者：王婷[1] 马怀宝[1] 王远见[1] 李昆鹏[1] 马为民 WANG Ting;MA Huaibao;WANG Yuanjian;LI Kunpeng;MA Weimin(Key Laboratory of Yellow River Sediment Research,MWR,Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China;Zhumadian Hydrology and Water Resources Survey Bureau,Zhumadian 463000,China))

机构地区：[1]黄河水利科学研究院水利部黄河泥沙重点实验室,河南郑州450003 [2]驻马店水文水资源勘测局,河南驻马店463000

出　　处：《人民黄河》2019年第1期6-9,13,共5页Yellow River

基　　金：国家重点研发计划项目(2018YFC0407401-01);国家自然科学基金资助项目(51509100;51509102;51509103;51539004);黄河水利科学研究院基本科研业务费专项(HKY-JBYW-2016-10;HKY-JBYW-2018-18;HKY-JBYW-2017-19)

摘　　要：截至2016年10月,小浪底水库已蓄水运用17 a。水库运用阶段一般分防凌、春灌蓄水和春灌泄水期,汛前调水调沙期,防洪运用以及水库蓄水期。2000—2016年进出库泥沙分别为49.371亿、10.381亿t;汛期入库泥沙占全年的86.6%;汛前调、汛期出库沙量分别占全年的31.1%、68.6%,细沙占出库沙量的79.6%;水库排沙比为21.0%,细沙排沙比为34.8%。水库排沙比随回水长度增加而减少,细沙、中沙、粗沙排沙比随着全沙排沙比的增大而增大,细沙增大最快。By Oct. 2016,the Xiaolangdi Reservoir has been used for 17 years. The operation during a year is composed of ice control,water storage and discharge of spring irrigation,water and sediment regulation in pre-flood season,flood control and reservoir storage. The mounts of inlet and outlet sediment from 2000 to 2016 are 4.9371 billion and 1.0381 billion tons respectively. The mount of inlet sediment in flood season accounted for 86.6% of whole year; the outlet sediment during water and sediment regulation in pre-flood season and flood season accounted for 31.1% and 68.6% respectively and the fine sediment occupied 79.6% of the outlet sediment. The reservoir sediment delivery ratio is 21.0% and the fine sediment delivery ratio is 34.8%. With the increase of backwater length,the reservoir sediment delivery ratio is decreased. With the increase of total sediment discharge ratio,the sediment delivery ratio of fine,medium and coarse sand increases,of which,the increase of fine sand is the maximum.

关 键 词：回水长度 排沙比 来水来沙 水库运用 小浪底水库 

分 类 号：TV856[水利工程—水利水电工程] TV882