拱坝和坝肩岩体的力学和渗流的耦合分析实例  

ANALYSIS OF THE MECHANIC HYDRAULIC INTERACTION CONCERNING ARCH DAM AND ITS ABUTMENTS

作　　者：耿克勤[1] 吴永平[1] 

机构地区：[1]中国水利水电科学研究院岩土所

出　　处：《岩石力学与工程学报》1997年第2期125-131,共7页Chinese Journal of Rock Mechanics and Engineering

摘　　要：以建筑在复杂岩基上的龙羊峡水电站重力拱坝和坝肩岩体的力学、渗流及其耦合分析为例，说明采用本文提出的导水断层和主干裂隙的离散介质和多组节理岩体的等效连续介质的混合模型求解复杂岩基的裂隙渗流场，采用等效连续介质模型和特殊的断层及软弱夹层的有限元相结合的方法求解复杂岩基的力学场，依据断层和多组节理岩体的等效渗透系数与复杂应变的耦合关系分析力学—渗流的耦合作用的模型。The analysis of mechanic, seepage and mechanio hydraulic interaction problems is introduced concerning Longyangxia gravity arch dam and its abutments built on complex rock foundation. By means of discrete model for faulted zones and dominant fissures and equivalent continuum model for jointed rock masses, the problem of three dimensional seepage in fractured media has been solved. Using an equivalent continuum model for jointed rock masses and special finite elements for faults and planes of weakness, the elasto plastic analysis can be done. Acoording to the coupling relationship of the equivalent coefficient of percolation and complex strain, the method of mechanic percolating interaction analysis has been derived. With the mathematical physical model, method and computer program provided in this paper, the elasto plastic mechanical analysis, seepage flow in fractures and mechanic percolating interaction can be successfully completed.

关 键 词：弹塑性力学 裂隙渗流 岩体力学 拱坝 坝肩 

分 类 号：TU452[建筑科学—岩土工程]