多用途平面有限元程序的理论基础及其在水库诱震研究中的应用  

Theoretical Basis of Multi—use Plane Finite Element Procedure and Its Application in the Research on Reservoir—Induced Earthquake

作　　者：沈立英[1] 常宝琦[1] 

机构地区：[1]广东省地震局,广州510070

出　　处：《人民珠江》1994年第1期22-26,共5页Pearl River

摘　　要：通过分析基本微分方程和边界条件,证实固结问题是由平面应变和流体通过多孔介质的渗流这两个问题有机地组合起来的。这从理论上保证了一个程序可同时处理平面应变、渗流和固结这三个不同性质的定解问题。 该文应用应力～孔隙压耦联理论,并通过四个模型的计算,揭示新丰江水库地震的发生不仅与库水的耦联作用和库区存在的陡倾角、走滑兼正断层作用有关,而且还与库区存在的高密度基底以及库水的加、卸载方式有关。Through the analysis of elementary differential equation and boundary condition, it is proved that the solidification problem is combined organically by these two problems-plane strain and seepage with fluid flowing through the porous medium. This ensured theoretically that one procedure can be used to deal with simultaneously three distinct -in-properties problems: plane strain, seepage and solidification.In this paper, by the use of the theory of stress -pore pressure conjunction and the caculating of four models, it demonstrates that Xingfengjiang reservoir - induced earthquake is not only in relation to the conjunction function of the reservoir water and the slant angle along the reservoir or the slip fault function, but also in relation to the heavy -density reservoir base and the loading or unloading method of reservoir water.

关 键 词：水库 地震 有限元程序 计算 

分 类 号：TV697.24[水利工程—水利水电工程]