三维裂隙网络中典型重金属污染物反应运移数值模拟
摘要
The geologic discontinuities present in natural fractured rock governs groundwater flow and solute transport process.Due to the complexity of real-world fracture network, discrete fracture network (DFN) is often be described and generated based on specific probability distributions determined by different parameters (shape, location, size, density, orientation, etc.).Due to DFN' s highly heterogeneous and an isotropic features, it´s a challenge to simulate groundwater flow and solute transport processes using traditional numerical solution based on the experience achieved in porous media.In this paper, a 3-D DFN model is built for field-scale study, and mapped to an equivalent porous medium (EPM) model, which further couples groundwater flow model with the multi -component reactive transport code PFLOTRAN to achieve numerical simulation of the reactive transport process of heavy metal contaminants in the fractured network and quantitative assessment of mass fluxes.The study shows that the behavior