| 断层两侧块体宽度不等时断层的不稳定性分析 |
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| 引用本文： | 杨晓春, 王鲁, 范天佑. 断层两侧块体宽度不等时断层的不稳定性分析[J]. 地球物理学报, 1999, 42(03): 401-409, |
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| 作者姓名： | 杨晓春 王鲁 范天佑 |
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| 作者单位： | 1. 北京理工大学材料科学研究中心 北京 100081; 2. 宁夏大学应用数学研究所 银川 750021 |
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| 摘 要： | 以断裂力学和断裂动力学原理为基础，采用复变函数方法，定量讨论了当断层两侧块体尺寸（宽度）不等时，断层体（即合断层的岩石块体）的稳定性．着重考虑断层两侧块体宽度（或高度）以及断裂传播速度对上述不稳定性的效应．这些分析结果对震源观测中发现的低应力降现象做了完好的解释，也对板块构造理论涉及该方面的内容做出补充．
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| 关 键 词： | 断层不等宽度（或不等高度） 传播速度 不稳定性 低应力降 |
| 收稿时间： | 1998-10-25 |
AN ANALYSIS OF INSTABILITY FOR FAULT AS ITS TWO PARTS BEING ASYMMETRICAL |
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| YANG XIAO-CHUN, WANG LU, FAN TIAN-YOU. AN ANALYSIS OF INSTABILITY FOR FAULT AS ITS TWO PARTS BEING ASYMMETRICAL[J]. Chinese Journal of Geophysics (in Chinese), 1999, 42(03): 401-409, |
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| Authors: | YANG XIAO-CHUN WANG LU FAN TIAN-YOU |
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| Affiliation: | 1. Research Cnter of Materials, Bening institute of Technology, Technology, Beijing 100081, China; 2. Institute of Geophysics, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | In this paper, based on the principle of the fractUre mechanics and fracturedynamics,and by means of the method of complex variable function, the instability ofan asymmetrical fault is quanhtatively discussed. The influences of the block width,or height of the asymmetrical fault and itS propagating velocity on instability areinveshgated in detail. The resultS explain the low stress drop Phenomena in anearthquake. |
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| Keywords: | AsymmetricalfaultFaultbody Propagatingvelocity Instability Lowstressdrop. |
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