岩石圧砕片の粒度分布と消費エネルギーに関する一考察 A Consideration on Particle Size Distribution of Fragments and Energy Required in Uniaxial Compression Tests

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Five rocks were compressed and crashed up to 20 % of the initial height and the fragments were collected and sieved. The main results are summarized as follows:<BR>(1) Particle size distribution of fragments follows the mixed Weibull distribution depending on the grain sizes of rock.<BR><i>R</i> = <i>R</i><sub>1</sub> + <i>R</i><sub>2</sub> + <i>R</i><sub>3</sub><BR><i>R<sub>i</sub></i> = <i>W<sub>i</sub></i> exp(-(<i>d<sub>p</sub></i> / <i>d<sub>ei</sub></i>)<sup>1.5</sup>)<BR><i>R</i> is the weight percentage retained on the sieve of aperture <i>d<sub>p</sub></i>, and <i>d<sub>e</sub></i> is the absolute size constant (<i>d<sub>e</i>1</sub> < <i>d<sub>e</i>2</sub> < <i>d<sub>e</i>3</sub>).<BR>(2) In case of Akiyoshi marble, weighing function <i>W</i><sub>2</sub> is nearly zero. Except Akiyoshi marble, all other four rocks show the similar particle distribution trend in which <i>W</i><sub>2</sub> is considerably larger than <i>W</i><sub>1</sub>.<BR>(3) End-surface condition, moisture and size effect of rock specimen has only small influences on the particle size distribution.<BR>(4) Energy required during testing has close relationship with the size distribution of fragments.

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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 118(12), 729-736, 2002-12-25

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10010084922
  • 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
    6422374
  • 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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