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对大空间尺度和长时间跨度的地下水流动及污染物质运移进行预测的需求 ,使水文地质研究面临异乎寻常的挑战 .这些需求来自于对核废料地质储放方法的安全性评价、地下水污染状况评价及其治理方案的选择 .流动系统的非均质性是地下水流动及物质运移模拟中最主要的困难之一 ,这种困难来自对非均质系统进行特征描述 (通过原位观测实现 )、概念化及模拟 .评述了非均质介质中流动运移模拟的一些重要问题与挑战 ,讨论了解决的途径 .讨论的主题包括 :动力流动的沟道化 ,示踪剂穿透曲线 ,裂隙岩石中流体流动的多尺度 ,观测的不同尺度 ,模拟、预测与非均质性以及系统特征描述和预测性模拟的分析 .
The need to predict groundwater flows and transport of pollutants over large spatial scales and over long stretches poses an extraordinary challenge to hydrogeological research that comes from the safety assessment of the geological storage of nuclear waste and the status of groundwater pollution Evaluation and the choice of its governance options.Height heterogeneity of mobile systems is one of the most important difficulties in simulation of groundwater flow and material movement from the characterization of heterogeneous systems (through in situ observations) , Conceptualization and simulation, some important problems and challenges in the simulation of flow migration in heterogeneous media are reviewed, and the ways to solve them are discussed.The topics discussed include: channeling of motive flow, tracer penetrating curve, fractured rock Multi-scale flow in the fluid, observation of different scales, simulation, prediction and heterogeneity and system characterization and predictive simulation analysis.