| 逆冲断层应力场的数值模拟 |
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| 引用本文： | 宋惠珍,曾海容,Denis Heliot,剡公瑞.逆冲断层应力场的数值模拟[J].地震地质,1999,21(3):275-282. |
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| 作者姓名： | 宋惠珍 曾海容 Denis Heliot 剡公瑞 |
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| 作者单位： | 1. 中国地震局地质研究所,北京,100029
2. 斯伦贝谢北京技术开发中心,北京,100004 |
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| 基金项目： | 中国地震局地质研究所项目;99B0032; |
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| 摘 要： | 采用二维显式有限差分法与三维隐式有限单元法，分别计算了模型剖面上断层逆冲运动和三维断层逆冲运动伴随的断层邻域应力场。结果表明：（１）逆冲断层上盘下端部发育张应力场，下盘下端部发育压应力场；（２）对复杂的三维构造，在一定限定条件下，可以转化成二维问题进行计算；（３）显式差分法与隐式有限单元，都能较好地用接触模型模拟活动断层的应力场特征
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| 关 键 词： | 逆断层 应力场 有限差分法 有限元 接触模型 |
| 修稿时间： | 1999年1月1日 |
A STRESS MODEL OF THRUST FAULTS |
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| Song Huizhen,Zeng Hairong,Denis Heliot,Yan Gongrui.A STRESS MODEL OF THRUST FAULTS[J].Seismology and Geology,1999,21(3):275-282. |
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| Authors: | Song Huizhen Zeng Hairong Denis Heliot Yan Gongrui |
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| Abstract: | We study :(1) A nonlinear model of thrust movement——a contact model, (2) The methods of explicit and implicit calculation of thrust stress field, (3) Thrust stress field characteristics from explicit and implicit scheme. We describe a thrust movement model and get stress field near the fault by 2D explicit finite difference method and 3D implicit finite element method, respectively. The results show that (1) the lower part of hanging wall of the thrust is tensile, and the lower part of foot wall is compre |
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| Keywords: | Reversed fault Stress field Finite difference method Finite element Contact model |
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