Multiobjective optimization of the groundwater exploitation layout in coastal areas based on multiple surrogate models

作     者：Fan, Yue Lu, Wenxi Miao, Tiansheng Li, Jiuhui Lin, Jin 

作者机构：Jilin Univ Key Lab Groundwater Resources & Environm Minist Educ Changchun 130021 Peoples R China Jilin Univ Jilin Prov Key Lab Water Resources & Environm Changchun 130021 Peoples R China Jilin Univ Coll New Energy & Environm Changchun 130021 Peoples R China Nanjing Hydraul Res Inst Nanjing 210029 Peoples R China 

出 版 物：《ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH》 (环境科学与污染研究)

年 卷 期：2020年第27卷第16期

页      面：19561-19576页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：National Key Research and Development Program of China [2016YFC0402800] National Nature Science Foundation of China Key Laboratory ofGroundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, China 

主　　题：Seawater intrusion Groundwater exploitation Simulation-optimization method Surrogate model Multiobjective optimization Kriging SVR KELM 

摘      要：Seawater intrusion is a common problem in coastal areas. The rational distribution of groundwater exploitation can minimize the scope of seawater intrusion and maximize groundwater exploitation. In this study, an optimization method for the groundwater exploitation layout in coastal areas was proposed. Based on the numerical simulation model of variable-density groundwater, a multiobjective groundwater management model was constructed with the objectives of maximizing groundwater exploitation and minimizing seawater intrusion. The optimization model was solved by nondominated sorted genetic algorithm-II (NSGA-II). To improve the computational efficiency of the optimization model, the surrogate models of the groundwater simulation model were built by using three different methods: kriging, support vector regression (SVR), and kernel extreme learning machines (KELM). Finally, the above methods were tested in Longkou City of China. The results show that the use of surrogate models can greatly reduce the computing time for solving seawater intrusion management problems. The surrogate model of the variable-density groundwater simulation model based on the SVR method has the best performance. The groundwater exploitation layout optimized by the above method is reasonable and can reflect the actual hydrogeological conditions in the study area. This study provides a reliable way to optimize the groundwater exploitation layout in coastal areas.