摘要
圩区水利工程生态调度是水利领域推动生态文明建设的重要举措,其方案制定是一个多变量、多目标的优化问题。为探索一条平原河网圩区水利工程生态调度方案制定的可复制、可推广路径,以苏州市吴中区城南包围为例,对圩区水利工程生态调度方案设计总体思路进行总结凝练,借助水环境数学模型工具,从定性分析和定量计算角度进行方案优化研究。研究指出:方案设计可遵循确定总体引排格局、提出适宜引水规模、优选引排控导布置的总体思路;槽蓄量变化率、水质改善率可作为反映方案对防洪和水环境影响的综合性比选指标。最终确定优化方案如下:利用石湖、小石河和东太湖为引水水源,运河为排水去向,以15 m 3/s的适宜引水规模,采取运河侧分散泵排降低局部运行水位促使清水自流入城。该方案可达到河道槽蓄量干扰低,水质改善率空间分布均匀的效果。
Ecological operation of water conservancy projects in polder area is an important measure to promote the ecological civilization in the field of water conservancy, and its scheme formulation is a multi-variable and multi-objective optimization problem.In order to explore a reproducible and extendable path for the formulation of ecological operation scheme of water conservancy projects in polder area of plain river network, taking Chengnan polder area in Wuzhong District of Suzhou City as an example, this paper summarizes the overall design idea of ecological operation scheme of water conservancy projects in polder area.With the help of water environment mathematical model, an optimization scheme is studied from the perspective of qualitative analysis and quantitative calculation.We suggest a general idea of determining the overall diversion and drainage pattern, then proposing an appropriate diversion scale, and optimizing the diversion and drainage control layout.The change rate of tank storage and the improvement rate of water quality can be used as comprehensive comparison indices to reflect the influence of the schemes on flood control and water environment.In the proposed scheme, Shihu Lake, Xiaoshi River and East Taihu Lake are used as water diversion sources, the Grand Canal is used as drainage destination, and the suitable diversion scale is 15 m~3/s;by deploying scattered pumping stations along the canal to reduce the local operating water level, thus promoting the water flowing to the destination by itself.The proposed scheme has advantages of low storage disturbance and uniform spatial distribution of water quality improvement.
作者
魏清福
WEI Qingfu(Jiangsu Taihu Planning and Design Institute of Water Resources Co.,Ltd.,Suzhou 215128,China)
出处
《人民长江》
北大核心
2022年第10期31-36,共6页
Yangtze River
关键词
水利工程生态调度
平原河网
圩区
多目标生态调度
MIKE11
ecological operation of water conservancy project
plain river network
polder area
multiple target ecological operation
MIKE 11
