水利水电科技进展2025，Vol.45Issue(2)：54-62,68,10.DOI:10.3880/j.issn.1006-7647.2025.02.008
超标准洪水下鄱阳湖单退圩和蓄滞洪区联合分洪运用研究
Study on joint operation of semi-restoration polder and detention and retention area for flood diversion in Poyang Lake under extreme flood conditions
摘要
Abstract
To reasonably activate the semi-restoration polder(SRP)and detention and retention area(DRA)and effectively reduce the water level of Poyang Lake,a two-dimensional hydrodynamic model of Poyang Lake and the downstream sections of its five tributaries was established using MIKE21.The extreme flood event was simulated by amplifying the 2020 Poyang Lake flood using the same-frequency method.Nine combination schemes were formulated by setting different activation water levels for SRP and DRA,and the flood diversion processes were simulated.The optimal scheme and its associated economic losses were further analyzed.The results indicate that the optimal flood diversion effect is achieved when the SRPs are activated at water levels of 21.50 m(for protection areas under 10 000 mu)and 22.30 m(for protection areas above 10 000 mu)and the DRAs are activated at water level of 22.50 m.Under this scheme,the flood diversion volumes for the SRPs and DRAs are 2.617 billion m3 and 2.569 billion m3,respectively,with maximum 24-hour water level reductions of 0.37 m and 0.25 m,respectively.After 48 hours of activation,the direct agricultural economic loss for the SRPs is 209 million yuan,while the loss for DRAs is 417 million yuan,of which the loss for the Kangshan DRA is 154 million yuan.关键词
单退圩/蓄滞洪区/降低水位/洪水损失/鄱阳湖Key words
semi-restoration polder/detention and retention area/drawdown of water level/loss caused by flood/Poyang Lake分类
水利科学引用本文复制引用
邹佳宇,温天福,顾平,李港,雷声,王志超,刘鑫,鄢煜川..超标准洪水下鄱阳湖单退圩和蓄滞洪区联合分洪运用研究[J].水利水电科技进展,2025,45(2):54-62,68,10.基金项目
水利部重大科技项目(SKS-2022010) （SKS-2022010）
江西省水利科技项目(202325ZDKT14,202224ZDKT20,202124ZDKT02) （202325ZDKT14,202224ZDKT20,202124ZDKT02）
长江科学院开放研究基金项目(CKWV20231164/KY) （CKWV20231164/KY）
江西省技术创新引导类科技计划项目(20223AEI91008) （20223AEI91008）
