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断层端部及附近地应力场的数值模拟
NUMERICAL SIMULATION OF GROUND STRESS FIELD AT ENDS AND VICINITY OF A FAULT
【摘要】 用有限元方法模拟研究断层构造对地应力场分布的影响。结果表明:断层规模、岩体、断层弹性模量、断层走向与区域最大水平主应力的夹角、边界应力比、断层几何形态等是影响断层端部以及附近应力场分布的主要因素。
【Abstract】 The effect of fault structure on ground stress field is studied by using finite element method.The results indicate that,fault scale,elastic modeling quantity of a fault and rockbody,the angle between maximum horizontal principal stress and fault direction,stress border and fault geometry are the main factors of ground stress distribution at the ends and vicinity of a fault.
【关键词】 断层端部;
地应力场;
有限元方法;
数值模拟;
地震;
【Key words】 ends of fault; ground stress field; finite element method; numerical simulation; earthquake;
【Key words】 ends of fault; ground stress field; finite element method; numerical simulation; earthquake;
【基金】 上海市综合深井地震观测系统建设项目;地震科学联合基金(C08036)
- 【文献出处】 大地测量与地球动力学 ,Journal of Geodesy and Geodynamics , 编辑部邮箱 ,2009年02期
- 【分类号】P315.2
- 【被引频次】22
- 【下载频次】461