地下水井群系统嵌套式组合优化调配模型研究

黄河中下游地区地下水资源丰富,但由于地势平缓,地下径流缓慢,地下水取水井污染物沉积致使水质逐步恶化,取用过程中常规调配手段已无法满足需求。对此,在对黄河干流两侧地下水取用规律及水质变化特征进行调查研究的基础上,建立地下水取用输配系统微观水力仿真模型;并对各水井特征污染物Fe进行傅里叶拟合,进而结合一级动力学方程建立输配系统水质仿真模型;最后综合水质优化、水量优化、能耗优化3个目标,构建针对地下水井群系统的嵌套式组合优化调配模型,并采用Visual Studio 2018编程予以实现。通过在黄河中下游地区某市的应用,验证了该模型在污染物控制、降低能耗等方面的优势,为复杂地下水取用系统提供了一种科学、实用的调配技术。

Study on Nested Model of Combinatorial Optimization and Distribution for Groundwater System

Groundwater resources are abundant in the middle and lower reaches of the Yellow River.However,due to the gentle terrain,slow groundwater runoff and pollutant deposition,the water quality in groundwater intake wells is gradually deteriorated.And the conventional distribution method has been unable to meet the intake demand.Based on the investigation and research on the groundwater intake law and water quality characteristics on both sides of the main stream of the Yellow River,the micro hydraulic simulation model is established for the groundwater intake and distribution system.The characteristic pollutant Fe of each well are simulated with the Fourier fitting,and then the water quality model of the distribution system is established combining with the first-order dynamic equation.Finally,the water quality optimization is integrated with the goal of water yield and energy consumption,a nested model of combinatorial optimization and distribution for complex groundwater wells is established,which is realized by visual studio 2018 programming.Through the application in a city in the middle and lower reaches of the Yellow River,the advantages of the model in pollutant control and energy consumption reduction are verified,which provides a scientific and practical technology for complex groundwater intake system.