基于升尺度离散裂隙—基质模型的裂隙水反应运移数值模拟与软件开发  

Numerical Simulation and Software Development of Fracture Flow and Reactive Transport Based on Upscaled Discrete Fracture Matrix Model

作　　者：刘殿广 杨蕴[2] 袁奕梁 窦智[2] 吴剑锋[1] 吴吉春[1] LIU Dianguang;YANG Yun;YUAN Yiliang;DOU Zhi;WU Jianfeng;WU Jichun(School of Earth Sciences and Engineering,Nanjing University,Nanjing 210023,China;Key Laboratory of Groundwater Protection and Utilization,National Key Laboratory Cultivation and Development Site,School of Earth Sciences and Engineering,Hohai University,Nanjing 211100,China)

机构地区：[1]南京大学地球科学与工程学院,南京210023 [2]河海大学地下水保护与利用国家级重点实验室培育建设点地球科学与工程学院,南京211100

出　　处：《高校地质学报》2025年第1期14-23,共10页Geological Journal of China Universities

基　　金：国家重点研发计划课题(2022YFC3702202);江苏省优秀青年基金项目(BK20240190)联合资助。

摘　　要：裂隙水反应运移模拟是地球科学和环境工程领域的研究热点与难点,传统的等效多孔介质模型或离散裂隙网络模型在刻画复杂裂隙网络中的水流和溶质运移过程时存在一定的局限性。文章开发裂隙水反应运移数值模拟软件FracRTM,基于离散裂隙网络(Discrete Fracture Network,DFN),采用升尺度离散裂隙—基质模型(Upscaled Discrete Fracture Matrix Model,UDFM)构建连续体网格并计算等效渗透率和孔隙率,采用开源反应运移数值模拟程序模拟裂隙—基质系统中地下水流动、溶质运移和化学反应的物理—化学过程。文章介绍了FracRTM的总体设计与功能模块,同时基于FracRTM进行了酸性矿坑水在碳酸盐岩裂隙网络中迁移过程的数值模拟案例分析,以验证软件的有效性。Reactive transport simulation in fractured media is a prominent and challenging research area in the fields of geosciences and environmental engineering.Traditional equivalent porous media models and discrete fracture networks have certain limitations in accurately characterizing groundwater flow and solute transport processes within complex fracture networks.This paper presents the development of FracRTM,a numerical simulation software for groundwater flow and reactive transport in the fractured media.FracRTM,based on Discrete Fracture Network(DFN)modeling,employs the Upscaled Discrete Fracture Matrix Model(UDFM)to construct continuum meshes and calculate equivalent permeability and porosity.The software integrates open-source reactive transport simulation programs to model the physical and chemical processes of groundwater flow,solute transport,and chemical reactions within fractured-matrix systems.This paper describes the overall design and functional modules of FracRTM,followed by a numerical simulation case study of acid mine drainage migration,which is used to validate the software’s effectiveness.

关 键 词：裂隙水 反应运移模拟 数值模型 软件开发 

分 类 号：X523[环境科学与工程—环境工程] X84