| 一个划定强震危险区的方法 |
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| 引用本文： | 丁文镜.一个划定强震危险区的方法[J].地震学报,1982,4(2):127-135. |
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| 作者姓名： | 丁文镜 |
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| 作者单位： | 清华大学 |
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| 摘 要： | 华北地区多次强震发展断层走向表明,该区存在主应力方向一致的应力场。根据库伦-纳维强度理论,本文提出了临界走向断层的概念,探讨了形成闭锁段的物理机制。同时引用作者以往的研究结果————闭锁段附近断层错距和应力场的某些特征。 综合这些结果,本文构成了一套按力学原理划定强震危险区的方法。此外,还讨论了估计未来地震震级的方法。
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A METHOD FOR DEFINING DANGEROUS AREAS OF IMPENDING STRONG EARTHQUAKES |
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| Abstract: | The strike directions of earthquake faults of many strong earthquakes occurred recently in North China show that there exists a stress field, the direction of its principal stress is nearly the same everywhere. Based on the Coulomb-Navier strength theory, the present author proposes in this paper the concept of fault with critical strike and discusses the physical mechanism forming the blocked segment of fault. Some characteristic features of the offset of a fault and the stress field around the block-segment as worked out by the same author previously are referred.By combining all such results, a method for defining dangerous areas of strong earthquakes is now available. In addition, a method for predicting the magnitudes of earthquakes is also proposed. |
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