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地震

地震 ›› 1999, Vol. 19 ›› Issue (4): 413-418.

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二岩体系统破坏全过程的数值模拟和实验研究

林鹏1), 唐春安1), 陈忠辉2), 黄润秋3)   

  1. 1)中国沈阳 110006 东北大学岩石破裂与失稳研究中心
    2)中国北京 100083 中国矿业大学北京校区分形所
    3)中国成都 610059 地质灾害防治与工程地质环境保护国家实验室
  • 收稿日期:1998-11-16 修回日期:1999-04-19 出版日期:1999-10-31 发布日期:2022-09-23
  • 作者简介:林鹏,男, 1972年2月出生, 1998年在读博士生,主要从事岩石破裂的理论和数值模拟研究。
  • 基金资助:
    国家杰出青年科学基金(59525408)及地质灾害国家专业实验室开放基金资助。

NUMERICAL AND EXPERIMENTAL STUDY OF DEFORMATION AND FAILURE BEHAVIOR IN A DOUBLE ROCK SPECIMEN SYSTEM

Lin Peng1), Tang Chun'an1), Chen Zhonghui2), Huang Runqiu3)   

  1. 1) Northeastern University, Shenyang 110006, China
    2) China University of Mining and Technology, Beijing 100083, China
    3) National Lab of Geological Hazard Prevention and Engineering Geological Environment Protection, Chengdu 610059, China
  • Received:1998-11-16 Revised:1999-04-19 Online:1999-10-31 Published:2022-09-23

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摘要： 利用岩石破裂过程分析RFPA2D软件系统对不同岩性的二岩体相互作用系统受力破坏过程进行了数值模拟。并与大理岩- 花岗岩组成的双试样串联加载变形及声发射实验结果进行了比较,解释了由破裂体与非破裂体组成的岩体系统失稳破裂前一些微震前兆规律,包括微破裂迁移、变形局部化等。对于地震失稳破坏现象的研究结果表明,弹性回弹区的性质与研究失稳破裂区的性质具有同等重要性。

关键词: 数值模拟, 变形破坏, 声发射率, 相互作用

Abstract: By using a Rock Failure Process Analysis Code RFPA2D, the deformation and failure behavior of a double rock sample system w ere studied numerically. The result swere compared with an experiment result with a similar setup of the double sample system (Marblegranite sample system). Based on the studies, the precursors prior to the main-shock in the real geological system composed by the failure area and the no-failure area are explained theoretically, including the seismic migration and the deformation localization. As far as the studies of earthquake, rock burst or failure phenomena in other geo-materials, it is concluded from this study that it is of the same importance to study the behavior in elastic rebound zone as to study the behavior in unstable failure zone.

Key words: Numerical simulation, Deformation failure, AE ratio, Interaction