Rainfall Infiltration Recharge Partition Based on Winpest Inversion Analysis
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Abstract:
n the numerical groundwater flow simulation of areas with complex hydrogeological conditions, the rainfall infiltration recharge rate is usually assumed, which results in complicated model parameter identification. In this study, Modflow software was used to develop the Winpest inversion model, which can optimize hydraulic conductivities and rainfall infiltration recharge partition based on the fitting between the measured and simulated water levels. The model was applied to Bibanpo tunnel zone in XX County of XX Province?. The results showed that the rainfall infiltration recharge of the study area can be partitioned initially according to the different layers of surface outcrops, and then the partitions can be divided again based on different elevations and optimized to realize the high-precision fitting of initial groundwater seepage field. The Winpest inversion analysis method can reduce the blindness of assumed rainfall infiltration recharge and thus offer a more efficient and faster approach for modeling the initial groundwater seepage field with complicated hydrogeological conditions.
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