| 雁列断层应力场影响因素数值模拟分析 |
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| 引用本文： | 王时,张环曦,周安聘,董博,章阳,纪春玲.雁列断层应力场影响因素数值模拟分析[J].西北地震学报,2021,43(5):1062-1071. |
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| 作者姓名： | 王时 张环曦 周安聘 董博 章阳 纪春玲 |
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| 作者单位： | 石家庄地震监测中心站, 河北 石家庄 050021 |
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| 基金项目： | 河北省地震科技星火重点项目（DZ20170109002） |
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| 摘 要： | 利用有限元法,建立具有黏弹性力学参数的断层接触对,采用对比分析的方法,通过改变雁列断层的几何间距和黏滞系数,分析影响雁列断层构造应力场的因素和分布状态,模拟出雁列断层在失稳过程中,地震所产生的应力降和应力应变等以及第一、第二、第三主应力与断层之间的角度关系等。
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| 关 键 词： | 雁列断层 数值模拟 应力应变 应力降 主应力 |
| 收稿时间： | 2020/1/31 0:00:00 |
Simulation study on the influencing factorsof stress field in echelon fault |
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| WANG Shi,ZHANG Huanxi,ZHOU Anpin,DONG Bo,ZHANG Yang,JI Chunling.Simulation study on the influencing factorsof stress field in echelon fault[J].Northwestern Seismological Journal,2021,43(5):1062-1071. |
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| Authors: | WANG Shi ZHANG Huanxi ZHOU Anpin DONG Bo ZHANG Yang JI Chunling |
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| Institution: | Shijiazhuang Earthquake Monitoring Center Station, Shijiazhuang 050021, Hebei, China |
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| Abstract: | In this paper, the fault contact pairs with viscoelastic mechanical parameters were established by using the finite element method. Through the comparative analysis method, factors affecting the tectonic stress field and the distribution state of the echelon fault were analyzed by changing the geometric spacing and viscosity coefficient of the fault. The stress drop and stress-strain relationship caused by earthquake during the instability process of the echelon fault were simulated, as well as the angle relationship among the first, second, and third principal stresses and fault. |
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| Keywords: | echelon fault numerical simulation stress and strain stress drop principal stress |
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