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Optimal location of cutoff walls for seawater intrusion
- Source :
- Applied Water Science, Vol 11, Iss 11, Pp 1-11 (2021)
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- In this paper, the simulation–optimization method is used to study the optimal location of cutoff walls for seawater intrusion. The optimization model is based on minimizing the chlorine concentration of two water sources after 50 years. In order to reduce the computational complexity, a Kriging surrogate model simulation is coupled with the optimization model. Finally, a hypothetical case is used to evaluate the accuracy of the surrogate model and the performance of the optimization model. The results show that the outputs of the Kriging surrogate model and the variable density groundwater simulation model for the same cutoff wall design fit well, and the average relative error of the two outputs is only 2.2% which proves that it is feasible to apply the Kriging surrogate model to this problem. By solving the optimization model, the location of the cutoff wall which minimizes the sum of chlorine concentration of the two water sources after 50 years is obtained. This provides a stable and reliable method for the site selection of cutoff walls for future projects intended to prevent and control seawater intrusion.
- Subjects :
- Mathematical optimization
Hydrogeology
Water supply for domestic and industrial purposes
Computational complexity theory
Seawater intrusion
Site selection
Simulation and optimization method
Surrogate model
Approximation error
Cutoff
Environmental science
Kriging surrogate model
Design of cutoff wall
TD201-500
Groundwater
Water Science and Technology
Subjects
Details
- ISSN :
- 21905495 and 21905487
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Applied Water Science
- Accession number :
- edsair.doi.dedup.....98db93285cd5a0ec01b1c16c396bdcea