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作者:

Fan, L. F. (Fan, L. F..) (学者:范立峰) | Shi, X. Y. (Shi, X. Y..) | Wang, M. (Wang, M..) | Jiang, F. (Jiang, F..)

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EI Scopus SCIE

摘要:

This study investigates wave propagation of layered composite rock mass composed of multiple joints and assorted rock materials. Firstly, the effect of multiple-reflection between joints on wave transmission was explored by modifying the method of characteristics. Secondly, the superposition of direct and indirect transmission induced by multiple-reflection was analyzed. Waveform variations in wave transmission were compared across three different layered composite rock mass. Finally, the effects of wave parameters (frequency), joint parameters (stiffness and number), and rock parameters (wave impedance ratio) on both direct and indirect transmission induced by multiple-reflection were considered. The results indicate that the effect of indirect transmission induced by multiple-reflection on both particle velocity and stress transmission of waves cannot be ignored in many cases. The results further indicate that effect of indirect transmission induced by multiplereflection on both particle velocity and stress transmission coefficients decreases with increasing incident wave frequency, while it increases with increasing joint numbers. The effect initially increases and subsequently decreases with increasing joint stiffness. Furthermore, the effect of indirect transmission induced by multiplereflection on the particle velocity transmission coefficient increases while its effect on the stress transmission coefficient decreases with increasing wave impedance ratio.

关键词:

Transmission coefficient Multiple parallel joints Wave transmission Layer composite rock mass Modified method of characteristics

作者机构:

  • [ 1 ] [Fan, L. F.]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Shi, X. Y.]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, M.]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Jiang, F.]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China

通讯作者信息:

  • [Fan, L. F.]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China;;

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来源 :

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES

ISSN: 1365-1609

年份: 2024

卷: 181

7 . 2 0 0

JCR@2022

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SCOPUS被引频次: 1

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