期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 575, 期 -, 页码 970-981出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scitotenv.2016.09.165
关键词
Multi-objective optimization; Reservoir operation; Ecological water demand; Runoff guarantee rate; South-to-North Water Diversion Project
资金
- National Natural Science Foundation of China [51421065, 51439001, 51679008]
- National Science and Technology Support Program [2011BAC12B02]
An improved multi-objective optimization model based on goal programming (GP) for supporting reservoir operation was developed under inflow senarios of multiple runoff guarantee rates (i.e., 25%, 75%, perennial mean, and 95%) and ecological goals with the combination of steady-and pulse-state ecological water demands. Under these four scenarios, discharge flows of Danjingkou Reservoir would be 358.40, 369.67, 268.91 and 98.14 x 10(8) m(3)/a, and those at Taocha Canal headwork would be 104.61, 86.62, 95.08 and 64.00 x 1(0)8 m(3)/a, respectively. The generated results for stream flows could successfully meet the predetermined operational goals for the project. Comparatively, under the scenario of 95% runoff guarantee rate, the obtained strategies could not satisfy the ecological water demands. The modeling results indicated that the capacity of water diversion and storage for Danjiangkou Reservoir would be enhanced due to the operation of the South-to-North Water Diversion Project. The results showed the risks associated with possible flooding would be comparatively low under those four runoff guarantee rates. This represents the current priority for flood control in Danjiangkou Reservoir needs to be changed into multiple ones including ecological water supply, water transfer, as well as downstream water security maintenance. (C) 2016 Elsevier B.V. All rights reserved.
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