关键词: 断裂带, 有限元, 节理单元

Abstract: The general jointed element that consists of several pairs of double-node can be only used to the middle parts of faults. This paper presents a special jointed element for the tip of faults and describes a new type of solid element, which is near to the tip of a fault, and is called the special solid element. These two new types of element plus the general jointed element could simulate any fault, which is of any azimuth and limited of strike length. Thus, this model provides a supplement to geomechanic problem and a powerful tool to simulate and investigate the effect of faults on geological structure.

Key words: Fracture zone, Finite element, Jointed element