含水层非均质性不同刻画方法对地下水流和溶质运移预测的影响

蒋立群; 孙蓉琳; 梁杏

doi:10.3799/dqkx.2020.268

Volume 46 Issue 11

Nov. 2021

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Jiang Liqun, Sun Ronglin, Liang Xing, 2021. Predicting Groundwater Flow and Transport in Heterogeneous Aquifer Sandbox Using Different Parameter Estimation Methods. Earth Science, 46(11): 4150-4160. doi: 10.3799/dqkx.2020.268

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Jiang Liqun, Sun Ronglin, Liang Xing, 2021. Predicting Groundwater Flow and Transport in Heterogeneous Aquifer Sandbox Using Different Parameter Estimation Methods. Earth Science, 46(11): 4150-4160. doi: 10.3799/dqkx.2020.268

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Predicting Groundwater Flow and Transport in Heterogeneous Aquifer Sandbox Using Different Parameter Estimation Methods

doi: 10.3799/dqkx.2020.268

School of Environmental Studies, China University of Geosciences, Wuhan 430078, China

Received Date: 2020-07-23
Available Online: 2021-12-04
Publish Date: 2021-11-30

Abstract

Abstract

In order to investigate the effect of different hydraulic parameter estimation methods of the heterogenous aquifer on predicting groundwater flow and solute transport simulation, based on the laboratory heterogeneous aquifer sandbox, conventional equivalent homogeneous model, kriging and hydraulic tomography are used to characterize heterogeneity of the sandbox aquifer. The role of priori information on improving hydraulic tomography inversion is discussed. The K estimated by different methods are used to predict the process of steady-state groundwater flow and solute transport, which evaluates the merits and demerits of different K estimation methods. Afterwards, we investigate the effect of aquifer heterogeneity on groundwater flow and solute transport. The results reveal that compared with kriging, hydraulic tomography can get higher precision to characterize aquifer heterogeneity and predict the process of groundwater flow and solute transport. The K values from 40 core samples are used as prior information of hydraulic tomography can promote the accuracy of K estimates. The conventional equivalent homogeneous model cannot accurately predict the process of groundwater flow and solute transport in heterogeneous aquifer. The enhancement of aquifer heterogeneity will lead to the enhancement of the spatial variability of tracer distribution and migration path, and the dominant channel directly determines the migration path and tracer distribution.
- hydraulic tomography,
- kriging,
- conventional equivalent homogeneous model,
- heterogeneity,
- hydraulic conductivity,
- solute transport,
- hydrogeology

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References(41)

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Predicting Groundwater Flow and Transport in Heterogeneous Aquifer Sandbox Using Different Parameter Estimation Methods

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