用湿周优化方法设计水库下游的最优环境流态

IF 2.4 3区 环境科学与生态学 Q2 ENGINEERING, CIVIL Journal of Hydro-environment Research Pub Date : 2021-11-01 DOI:10.1016/j.jher.2021.09.001
Mahdi Sedighkia , Bithin Datta , Asghar Abdoli
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引用次数: 4

摘要

水库需水量与环境流量的矛盾是水库管理中一个具有挑战性的问题。因此,优化环境流态是大坝下游的重要任务之一。本研究提出了一种基于湿周法的耦合模拟优化方法,作为环境流量的评估方法,并使用不同的元启发式算法来优化水库运行,以最大限度地减少栖息地损失和需水量损失的差异。采用模糊TOPSIS作为决策系统对优化算法进行排序。采用可靠性指数、脆弱性指数、均方根误差和平均绝对误差等指标作为衡量系统性能和选择最佳算法的标准。结果表明,重力搜索算法(gravity search algorithm, GSA)是优化水库下游环境流态的最佳方法。该方法能够优化环境流量,最大限度地减少水库管理中人类需求与水生动物需求之间的冲突。拟议的方法可能会减少环境管理者和利益相关者之间的谈判。此外,需要注意的是,原始的湿周法不能提供基于用户和水库管理约束(如存储约束)之间平衡的最优环境流态。该方法将湿周法从一种评价方法转化为一种优化水库下游环境流量的模拟优化方法。
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Design of optimal environmental flow regime at downstream of reservoirs using wetted perimeter-optimization method

Conflict between water demand and environmental flow requirements is a challenging aspect in the reservoir management. Hence, optimizing environmental flow regime is one of the most important tasks at downstream of the large dams. The present study proposes a coupled simulation–optimization method based on the wetted perimeter method as an assessment method of the environmental flow and optimization of the reservoir operation to minimize difference between habitat loss and water demand loss using different metaheuristic algorithms. Moreover, the fuzzy TOPSIS as the decision-making system was applied for ranking the optimization algorithms. Indices including reliability index, vulnerability index, root mean square error and mean absolute error were utilized as criteria to measure the system performance and to select the best algorithm. Based on the results, gravity search algorithm (GSA) was the best method to optimize environmental flow regime at downstream of the reservoir in the case study. The proposed method is able to optimize environmental flow to minimize conflicts between human’s needs and aquatic’s needs considering storage constraints in the reservoir management. The proposed method might minimize negotiations between environmental managers and stakeholders. Furthermore, it should be noted that original wetted perimeter method is not able to provide optimal environmental flow regime based on a balance between users and constraints in the reservoir management such as storage constraints. The proposed method converts wetted perimeter method from an assessment method to a simulation–optimization method for optimizing environmental flow at downstream of the reservoirs.

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来源期刊
Journal of Hydro-environment Research
Journal of Hydro-environment Research ENGINEERING, CIVIL-ENVIRONMENTAL SCIENCES
CiteScore
5.80
自引率
0.00%
发文量
34
审稿时长
98 days
期刊介绍: The journal aims to provide an international platform for the dissemination of research and engineering applications related to water and hydraulic problems in the Asia-Pacific region. The journal provides a wide distribution at affordable subscription rate, as well as a rapid reviewing and publication time. The journal particularly encourages papers from young researchers. Papers that require extensive language editing, qualify for editorial assistance with American Journal Experts, a Language Editing Company that Elsevier recommends. Authors submitting to this journal are entitled to a 10% discount.
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