| 岩石非均匀性对震级—频度关系的影响的数值模拟 |
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| 引用本文： | 梁正召,唐春安,朱万成,杨天鸿,王善勇.岩石非均匀性对震级—频度关系的影响的数值模拟[J].地震研究,2003,26(2):151-155. |
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| 作者姓名： | 梁正召 唐春安 朱万成 杨天鸿 王善勇 |
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| 作者单位： | 东北大学岩石破裂与失稳研究中心,辽宁沈阳,110004 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家自然科学基金，95-13-07-01，50174031，， |
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| 摘 要： | 无论是从天然地展的统计分析还是实验室岩石破裂实验，由于测试设备的限制、观测台站或测试位置的影响，目前有关地展展级-频度关系和G—R关系式及b值的研究都不可能保证数据资料的独立性和完整性。充分利用RFPA^20数值模拟软件，克服漏记、精度低和人为的限定资料范围等不利因素的影响，在充分考虑岩石的非均匀性的基础上，研究了岩石破裂过程中微震系列震级-频度关系及b值随岩石均质度的变化规律。
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| 关 键 词： | 岩石 非均匀性 震级 频度 数值模拟 b值 |
Numerical Simulation of Influence of Rock Heterogeneity on the Relation between Magnitude and Frequency |
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| Liang Zhengzhao,Tang Chun''''an,Zhu Wancheng,Yang Tianhong,Wang Shanyong.Numerical Simulation of Influence of Rock Heterogeneity on the Relation between Magnitude and Frequency[J].Journal of Seismological Research,2003,26(2):151-155. |
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| Authors: | Liang Zhengzhao Tang Chun'an Zhu Wancheng Yang Tianhong Wang Shanyong |
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| Abstract: | Because of the limitation to test system and the location of observation stations we cannot keep the independence and integrity of the data observed in the study of relation between the magnitude and frequency and b value.In this paper,by using a numerical simulation code REPA 2D ,a sequence of complete and independent earthquakes are simulated.It reproduces the evolution of stress field in crack propagation process and the mode of acoustic emission related to the heterogeneity of rock.It is shown that the b value is influenced by heterogeneity of rock and it decreases when heterogeneity increases. |
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| Keywords: | magnitude frequency numerical simulation and heterogeneity and b value |
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