基岩裂隙水非达西流条件下非费克运移试验与模型研究

项目名称： 基岩裂隙水非达西流条件下非费克运移试验与模型研究

项目编号： No.41272251

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 钱家忠

作者单位： 合肥工业大学

项目金额： 85万元

中文摘要： 随着地下工程日益增多以及世界各国对供水安全、核废料地质处置、石油开采和二氧化碳地质封存安全的高度关注，基岩水运移研究已成为水文地质学的一个极受重视的领域。然而由于具有强烈的非均质性，基岩裂隙水运移机理至今尚未完全清楚，对其量化计算则是具有挑战性的世界难题之一。本项目拟拓展我们以往的研究结果，进行系统地实验室和现场自然裂隙水运移模拟试验，采用试验研究与物理建模及模型计算相结合的研究方法，着重研究裂隙水力属性、几何属性以及基质属性对裂隙水非线性运移的影响；揭示裂隙水non-Darcy流机理和主控因素、建立能刻画裂隙水non-Darcy流的广义非线性数学模型；查明裂隙水non-Fickian运移机理和主控因素、发展能捕捉裂隙水non-Fickian运移的变指数数学模型；系统地阐明裂隙属性与模型参数间的关系，进一步揭示并建立基岩裂隙水non-Darcy流条件下non-Fickian运移机理和模型。

中文关键词： 基岩裂隙；非达西流；非费克运移；试验；模型

英文摘要： Recent years, due to more and more underground projects, safety for water supply, geological disposal of radionuclide wastes, oil exploitation and geological carbon sequestration concerned strongly by many countries all over the world, groundwater flow and solute transport in the fractured media have been an important research aspect in hydrogeology. Being strongly heterogeneous, the mechanism of flow and solute transport in fractured media is still not completely understood today. How to quantity the flow and solute transport keep one of the most challenging problems in the world. In this study, we will enlarge our previous work on flow and transport in artifical fractures in the laboratory, and conduct batch experiments including laboratory tests with natural fractures and test in situ. By means of combining the batch experiments with physical models and numerical simulation, we will play an emphasis on influence of fracture properties (including geometrical, hydraulic and matrix properties) on nonlinear flow and transport in fractures. The mechanism of non-Darcy and main influence factors will be disclosed and generalized mathematics models will be set up to describe the phenomena of non-Darcy flow; Similarly, the mechanism of non-Fickian and main influence factors will be found out and variable-index mathema

英文关键词： bedrock fracture；non-Darcy's flow；non-Fickian transport；experiment；model