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中文摘要：
渗流控制是大型水电工程建设面临的关键技术问题之一,渗流分析是实现渗控优化设计的重要途径。解释了渗流控制的过程、状态、参数和边界等4类物理控制机制,论证了基于Signorini型变分不等式的渗流分析方法的有效性和优越性,并阐述了排水孔幕数值模拟的SVA方法、初始渗流场的反馈分析方法以及岩土体渗流的强耦合机理和模拟方法。研究成果对大型水电工程渗流分析及渗控优化设计具有指导意义。
英文摘要：
Seepage control is one of the key technical issues in large-scale hydropower engineering practices,and seepage flow analysis is indispensable to the optimization design of seepage control systems.In this study,the physical mechanisms associated with various engineering measures for seepage control are investigated and categorized into four types,i.e.,control by coupled processes,control by initial states,control by hydraulic properties and control by boundary conditions.The effectiveness and advantages of the variational inequality approach of Signorini’s type for steady/non-steady seepage flow are presented.Also demonstrated are the SVA method for numerical modeling of drainage holes,the back analysis of initial seepage field,and the strongly coupled hydromechanical mechanism in fractured rocks and its numerical modeling.The research results may be helpful for the seepage flow analysis and the optimization design of seepage control systems in large scale hydropower projects.
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