摘要
从物理试验和数学模型研究两方面介绍和总结了近10多年来渗流–应力–化学溶蚀耦合作用下裂隙岩体渗透特性的研究现状。目前无论是物理试验还是数学模型研究,都还是主要利用宏观均匀化的方法来研究裂隙岩体渗透特性变化规律、及其与各影响因素(如应力、温度、渗透流体酸碱度、溶质浓度等)之间的宏观关系,但这种宏观均匀化方法还存在很多不足:如难以表述由于溶蚀作用岩石孔隙结构的细观变化,也难以表述渗流通道的形成和发展过程等。因此认为进一步深入开展以下3方面的研究将更有利于揭示复杂地质环境下裂隙岩体渗透特性机理:控制和量测技术一流的耦合渗流试验设备的开发以及现代无损探测技术引入(实现细观的实时的观察图像和数据)、数字岩芯技术的开发、建立微观-细观-宏观不同尺度的多物理化学场耦合的数学模型与分析方法。
The advances in permeability evolution in fractured rocks during hydro-mechanical-chemical processes over the past decade are introduced from both experimental and numerical studies.Generally macro-homogenization methods are employed to study the permeability evolution in fractured rocks and the macro-relations between permeability and physical variables（such as stress,temperature,pH value of solution,concentration of solutes,etc.）.But there exist some deficiencies for the macro-homogenization methods： meso-changes of pore structures are difficult to be characterized due to mineral dissolution and precipitation,and formation and development of flow conduits also cannot be described numerically.So three following suggestions may be beneficial to the further studies on mechanics of permeability evolution in fractured rocks under complicate geological environment：（1） design of experimental apparatus of coupled fluid flow-mechnical-chemical reaction system in rocks and utilization of no-damaging detection techniques（to obtain meso-and real-time pictures and data）;（2） development of digital core techniques;（3） development of mathematical models for multi-physical and chemical processes in micro-meso-macro scales and analytic methods.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2011年第7期996-1006,共11页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金项目(50779012)
教育部留学回国人员科研启动基金项目
关键词
岩石水力学
流固化学耦合
裂隙岩体
渗透特性
rock hydraulics
coupled hydro-mechanical-chemical process
fractured rock
permeability evolution
