Effects of Water Diversion Project from the Yangtze River to Huaihe River on the water age distribution of Lake Caizi, Anhui Province

被引：3
|
作者：
Wang Z. [1 ,2 ]
Fan Z. [2 ,3 ]
Yang Z. [1 ]
Wang W. [2 ]
Zhang H. [2 ]
Zeng F. [2 ]
机构：
[1] College of Water Conservancy and Environment, China Three Gorges University, Yichang
[2] Research Center of Water Environment, South China Institute of Environmental Science, Ministry of Environment Protection of PRC, Guangzhou
[3] College of Environment, Hohai University, Nanjing
来源：
Hupo Kexue/Journal of Lake Sciences | 2018年 / 30卷 / 06期
关键词：
EFDC model; Lake Caizi; Water age; Water Diversion Project from the Yangtze River to Huaihe River;
D O I：
10.18307/2018.0609
中图分类号：
学科分类号：
摘要：
Lake Caizi is an extremely important channel of Water Diversion Project from the Yangtze River to Huaihe River. The transportation and exchange of water bodies of Lake Caizi will be changed significantly due to the water conveyance project. Based on the Environmental Fluid Hydrodynamic Model (EFDC), the water age model of Lake Caizi was established in this paper. On the premise of validating the simulated and measured hydrological data, 14 schemes were designed to calculate the water ages of Lake Caizi under the influence of the monsoon, the water ages and flow field of Lake Caizi in the flood season, the normal season, and the dry season during the implementation period, along with the water ages under the eight wind directions with the same wind speed and the three wind speeds with the strong wind direction under the waterdiversion scenario of the dry season. Numerical simulation results show that: the distribution of the water ages in Lake Caizi has the space-time characteristics. In the absence of wind conditions, the average ages of Lake Caizi in spring, summer, autumn and winter were 120.93, 33.19, 92.92 and 101.48 d, respectively. Rather, under the influence of monsoon, the average water ages in spring, summer, autumn, and winter were 75.23, 32.45, 81.80 and 66.16 d, respectively. The water ages of Lake L2 in the west is long, while that of Lake L1 in the east and Lake L3 in the south shorter; The water diversion project will change the flow field of Lake L1 and Lake L3 and have little effect on the flow field of Lake L2; After the water diversion project is implemented, the water ages distribution of Lake Caizi is mainly affected by wind field and water conveyance. Different wind directions may have different impacts on the different lake districts of Lake Caizi. The southwest wind helps exchange water body of the Lake L1, the north wind helps to exchange the water body of the Lake L2, and the east wind aids the exchange of the water of the Lake L3. When the wind direction is northeast wind, the water ages of three lake regions are all relatively small. The water diversion during the dry season is beneficial to the exchange of water between the Lake L1 and the Lake L3, but the water exchange effect on Lake L2 is not obvious. © 2018 by Journal of Lake Sciences.
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页码：1576 / 1586
页数：10
相关论文
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