地震地质 ›› 1999, Vol. 21 ›› Issue (3): 238-242.

• 科研简报 • 上一篇    下一篇

用双节点有限单元模拟渗流模型中的断裂与裂隙

曾海容, 宋惠珍   

  1. 中国地震局地质研究所, 北京, 100029
  • 收稿日期:1998-08-31 修回日期:1999-01-31 出版日期:1999-09-08 发布日期:2009-11-25
  • 基金资助:
    中国地震局地质研究所论著99B0031.

APPLICATION OF DOUBLE NODE FINITE ELEMENT ON SEEPAGE INVOLVING FAULT AND FRACTURE

Zeng Hairong, Song Huizhen   

  1. Institute of Geology, China Seimological Bureau, Beijing 100029
  • Received:1998-08-31 Revised:1999-01-31 Online:1999-09-08 Published:2009-11-25

摘要: 将岩石结构力学中的三维节理单元的概念引入含裂隙系的渗流模型中,提出双节点渗流单元,用于模拟断层在地下岩体渗流场中的影响与作用,分析其物理意义,给出具体的单元渗流矩阵表达式。

关键词: 断层面, 渗流, 裂隙, 有限元, 双节点

Abstract: The concept of three-dimensional double node jointed element in structural analysis is introduced into fluid-flow model, thus a new type of seepage element is defined, which is named double-node seepage element. This element is analyzed from its physical instinct; while its mathematical expression in matrices is also given. The element presented can be used to simulate the effect of fault on seepage field.

Key words: Fault plane, Vadose, Crack, Finite element, Double-node