AE震源分布のフラクタル構造に基づいた岩石内き裂系のモデル化に関する研究 Modeling Method for Cracks in Rocks based on the Fractal Structure of the AE Source Distribution

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In underground construction it is important to obtain a discontinuities' model of rocks for simulations to evaluate rock stability around the working space and fluid flow in the rocks. In this study, an uniaxial compression test on a prism-shaped specimen of granite was conducted to develop a more feasible modeling method of cracks in rocks based on AE (acoustic emission) monitoring data and the fractal properties of the AE source distribution. 1. From this experiment, it was found that the AE source distribution was fractal and that the relationship between amplitude and frequency of AE was also fractal. 2. Crack distributions in the specimen and on the surface were both fractal. 3. A 3-D crack distribution model was constructed using AE monitoring data obtained from the experiment. In this model, the crack was described by a disk, and the fractal dimension of sectional lines that appeared on the surface of a specimen was adjusted to coincide with the dimension of lineaments extracted from a real crack image of the same surface of the specimen by correcting the AE parameters. That is, the relative AE energy for each event were altered iteratively until both fractal dimensions were matched. It is thought that this new modeling method for cracks in rocks can be directly applied to field studies of underground construction in the future.

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  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan  

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 114(12), 918-924, 1998-11 

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10002468725
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    4614130
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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