小流域联合调度优化模型应用研究——以浙江省长兴县泗安塘为例

Study on Application of Joint Scheduling Optimization Model in Small Watershed in Zhejiang Province

摘要:

鉴于小流域水网和地势复杂多变，且涉及水利工程种类繁多，探索一种能考虑多因素的全局分析模型是十分必要的。为此，以涵盖山区和平原的泗安塘小流域整治工程为例，构建了泗安塘流域概化河网模型，并通过洪峰模数和洪水位进行了模型率定；在概化河网模型基础上，提出了“水库—泵站—桥梁—河道”联合调度优化模型，并采用遗传算法搜索出能满足流域规划要求的最优过流方案；最后结合河道和周边现状，明确了相应流域整治措施。经调查，该工程在设计水平年内取得了良好的防洪排涝效益和社会效益，可以小流域整治工程提供参考。

Abstract:

In view of the complex and varied water network and topography of small watershed, and the variety of water conservancy projects involved, it is necessary to explore a global analysis model able to consider the multiple factors. Therefore, taking the Siantang small watershed renovation project covering both mountainous and plain areas as an example, the generalized river network model of Si'antang basin is constructed. And the model is calibrated by flood peak modulus and flood level. On the basis of generalized river network model, a set of "reservoir - pumping station - bridge - river" joint scheduling optimization model is put forward. The genetic algorithm is used to search the optimal overflowing scheme able to meet the planning requirements of the watershed. Finally, combined with the present situations of river and surroundings, the relative regulating measures of the watershed are clarified. Through investigation, the project has achieved the good flood control and drainage benefits and social benefits in the design level year, which provides a reference for small watershed regulating projects.