| 用断裂力学的方法研究地震断裂的扩展方式 |
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| 引用本文： | 王新华
,尹祥础
,滕春凯.用断裂力学的方法研究地震断裂的扩展方式[J].地球物理学报,1984,27(3):258-267. |
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| 作者姓名： | 王新华 尹祥础 滕春凯 |
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| 摘 要： | 本文基于断裂力学的实验结果和理论,结合地震资料及其研究结果提出了关于地震断层扩展的一种新的模式--地震断裂扩展的曲面模式;并用数值的方法计算了在二维情况下地震断层沿曲面（线）扩展的途径。根据这类地震的特点,指出对于这种地震可由其总体破裂的方向确定其发震地区的最大构造主压应力方向。并对唐山等地震实例提出了解释。 在计算方法上,本文对流行的有限单元方法进行了改进,使存贮减少,并提高了计算速度。
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| 关 键 词： | 地震断裂 扩展方式 断裂力学 唐山地震 地震断层 断层面解 方法研究 初动 最大压应力 余震分布 |
| 收稿时间： | 1981-11-28 |
ON THE STUDY OF THE SPREADING OF EARTHQUAKE RUPTURE |
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| WANG XIN-HUA,YIN XIANG-CHU,TENG CHUN-KAI.ON THE STUDY OF THE SPREADING OF EARTHQUAKE RUPTURE[J].Chinese Journal of Geophysics,1984,27(3):258-267. |
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| Authors: | WANG XIN-HUA YIN XIANG-CHU TENG CHUN-KAI |
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| Abstract: | Based on experimental and theoretical results of fracture mechanics and combined seismic informations, this paper presented a new model for the rupture of earthquake fault, the curved-surface model of the spreading of eatthquake fault. The path of curved surface （line） along which an earthquake fault spreads was computed numerically for the two dimensional case. According to the characteristics of this kind of earthquake, the direction of principal compressive tectonic stress in the region in which the earthquake occurs can be determined from the direction of the general rupture of this earthquake. An application was made for the Tangshan earthquake.In computation, an improvement was made for the current finite element method; the space of storage was decreased and the computing speed was increased. |
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