地质论评2009，Vol.55Issue(4)：590-597,8.
非均匀应力场下的铲状正断层带位移场和应力场特征
Characteristics of Listric Normal Fault Zone's Displacement and Stress Field in the Inhomogeneous Stress Field
摘要
Abstract
A new finite element method (FEM) in consideration of inhomogeneous stress field is introduced to study the dislocation of a listric normal fault zone's displacement and stress fields. New results reveal: (1) the site of maximum slip is at the middle part of the fault, not near the surface. (2) the maximum horizontal and vertical displacements at the ground surface are located at some distance from the fault trace. (3) slip of the fault may result in two failure regions near the ground surface: one close to the surface trace of the fault, and the other within the hanging wall at some distance from the fault; it is in the regions that a succession of normal faults is typically observed in geological examples. 4) The maximum shear stress drop of the fault is also at its middle part.关键词
非均匀应力场/铲状正断层/位移场/应力场/有限元Key words
inhomogeneous stress field/ listric normal fault/ displacement field/ stress field/ FEM分类
天文与地球科学引用本文复制引用
周一杰,胡才博,蔡永恩..非均匀应力场下的铲状正断层带位移场和应力场特征[J].地质论评,2009,55(4):590-597,8.基金项目
文为国家自然科学基金(编号40821062,40474013)和地震行业专项基金(编号200808068)资助项目的成果. （编号40821062,40474013）
