水利学报2018，Vol.49Issue(2)：156-167,12.DOI:10.13243/j.cnki.slxb.20170577
鄱阳湖水利调控对湖区典型丰枯水年水动力水质影响研究
Study on the influence of Poyang Lake Hydraulic Project on hydrodynamics and water-quality in wet and dry year
摘要
Abstract
The original relationship between the Yangtze River and the Poyang Lake will be hindered after the construction of Poyang Lake Hydraulic Project,which may have a great effect on water flow situation in the lake.A 2D well-balanced shallow water model for unstructured grids is established on the base of the Godunov-type finite volume method.According to the water level scheduling scheme by Poyang Lake Water Conservancy Project Construction Office,the variation of hydrodynamics and water quality in wet and dry year is researched.The results indicate that the annual average water level in Xingzi station increases by 1.49m in wet year and 1.88m in dry year after the construction.The water-level variation,velocity variation and the duration of the impact in dry year are all greater than those in wet year.The surface area will increase by 15.3％ and the water quantity increase by 29.2％ in the dry season of wet year,while that will be 22.8％ and 54.1％ in the dry year,respectively.The tracer model is applied in studying material transmission of the lake.The residence time increases by l～2d in wet year and 2～9d in dry year.The tracer travel time increases by 1-9d in wet year and l～20d in dry year.The material transport process in the lake is significantly slowed down after the construction.A simulation research of hydrodynamics and water quality in wet and dry year is applied in this paper,which lays the foundation of further study on migration and transformation of the contaminant and establishment of ecological model of lake-wetland.关键词
鄱阳湖/水利枢纽工程/水文水动力/水力滞留时间/示踪剂传输时间Key words
Poyang Lake/hydraulic project/hydrology and hydrodynamic/residence time/tracer travel time分类
建筑与水利引用本文复制引用
杨中华,朱政涛,槐文信,白凤朋..鄱阳湖水利调控对湖区典型丰枯水年水动力水质影响研究[J].水利学报,2018,49(2):156-167,12.基金项目
国家自然科学基金项目(51439007,5679170,51379157) （51439007,5679170,51379157）
