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Physical Experiment and Numerical Simulation of the Artificial Recharge Effect on Groundwater Reservoir

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
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Water 2017, 9(12), 908; https://doi.org/10.3390/w9120908
Received: 4 October 2017 / Revised: 17 November 2017 / Accepted: 20 November 2017 / Published: 23 November 2017
To improve the efficiency of utilizing water resources in arid areas, the mechanism of artificial recharge effecting on groundwater reservoir was analyzed in this research. Based on a generalized groundwater reservoir in a two-dimensional sand tank model, different scenarios of the infiltration basin location and recharge intensity are designed to study how to improve the efficiency of groundwater reservoir artificial recharge. The effective storage capacity and the effective storage rate are taken as the main parameters to analyze the relation between recharge water volume and storage capacity. By combining with groundwater flow system theory, FEFLOW (Finite Element subsurface FLOW system) is adopted to set up the groundwater numerical model. It is used to verify the experiment results and to make deep analysis on the rule of water table fluctuations and groundwater movement in the aquifer. Based on the model, different scenarios are designed to examine the combined effect of recharge intensity and intermittent periods. The research results show that: the distance between infiltration basin and pumping well should be shortened appropriately, but not too close; increasing recharge intensity helps to enlarge the effective storage capacity, but it can also reduce the effective storage rate, which goes against the purpose of effective utilization of water resources; and, the recharge intensity and recharge duration should be given full consideration by the actual requirements when we take the approach of intermittent recharge to make a reasonable choice. View Full-Text
Keywords: groundwater reservoir; artificial recharge; infiltration basin; effective storage rate groundwater reservoir; artificial recharge; infiltration basin; effective storage rate
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Xu, Y.; Shu, L.; Zhang, Y.; Wu, P.; Atlabachew Eshete, A.; Mabedi, E.C. Physical Experiment and Numerical Simulation of the Artificial Recharge Effect on Groundwater Reservoir. Water 2017, 9, 908.

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