| 断裂系扩展过程与地球物理场变化特征的实验研究 |
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| 引用本文： | 张之立,李强.断裂系扩展过程与地球物理场变化特征的实验研究[J].地球物理学进展,1993(4). |
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| 作者姓名： | 张之立 李强 |
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| 作者单位： | 国家地震局地球物理研究所，江苏省地震局 北京 100081，南京 210014 |
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| 摘 要： | 给出了判断断裂之间有无相互作用的力学判据.为了研究断裂间相互作用对地球物理场的影响,对若干类常见断裂系的扩展过程及扩展过程中的声发射b 值和波速变化进行了模拟实验研究.结果表明,各种断裂系由于相互作用的不同,扩展过程,声发射b 值和波速度化均有明显的不同特征.
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| 关 键 词： | 断裂系扩展过程 声发射 B 值 波速度化 模拟实验 |
EXPERIMENTAL RESEARCH ON THE PROPAGATION PROCESS OF FRACTURE SYSTEM AND CHARACTERISTICS OF GEOPHYSICAL FIELD |
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| Zhang Zhili.EXPERIMENTAL RESEARCH ON THE PROPAGATION PROCESS OF FRACTURE SYSTEM AND CHARACTERISTICS OF GEOPHYSICAL FIELD[J].Progress in Geophysics,1993(4). |
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| Authors: | Zhang Zhili |
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| Abstract: | The mechanical criteria for determining the interaction among fractures are given in this paper.In or-der to study the effects of interaction among fractures on the geophysical fields,b-value of acoustic emis-sion and wave velocity variations during the whole propagation process of some typical fracture system aremeasured by means of simulation experiments.The experimental results indicate that there are obviouslydifferent characteristics in the propagation processes,acoustic emission b-value and wave velosity varia-tion due to the different interactions among fractures in several kinds of fracture systems. |
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| Keywords: | Propagation process of fracture system Acoustic emission b-value Wave velocity variation Simulation experiment |
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