石灰石鉱山における発破振動および起砕物の粒度に関する二, 三の考察 Study on Effect of Blast Vibration on Size of Fragmentation at Limestone Quarry

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著者

    • 島田 英樹 SHIMADA Hideki
    • 九州大学大学院工学研究院地球資源システム工学部門 Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University
    • 松井 紀久男 MATSUI Kikuo
    • 九州大学大学院工学研究院地球資源システム工学部門 Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University
    • 笹岡 孝司 SASAOKA Takashi
    • 九州大学大学院工学研究院地球資源システム工学部門 Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University
    • 久保田 士郎 KUBOTA Shiro
    • 産業技術総合研究所 爆発安全センター Research Center for Explosion Safety, National Institute of Advanced Industrial Science and Technology
    • SIMANGUNSONG Ganda M.
    • 産業技術総合研究所 爆発安全センター Research Center for Explosion Safety, National Institute of Advanced Industrial Science and Technology
    • 緒方 雄二 OGATA Yuji
    • 産業技術総合研究所 爆発安全センター Research Center for Explosion Safety, National Institute of Advanced Industrial Science and Technology

抄録

The research was mainly performed to check whether or not the blast burden influence vibration magnitude. This is associated with the necessity to reconsider blasting design in order to reduce vibration to the acceptable levels. Blast vibration monitoring of three scenarios of burden were managed in limestone quarry. The vibration monitoring results are found in good agreement with what had been found by other researchers in terms of duration, amplitude, and frequency. Vibration waveforms typically last for 50 to 100 milliseconds. The peak amplitudes decrease according to additional distance. Frequencies decrease with increasing distance. The weight scaling law between the PPV and scaled distance revealed three relationships for three different scenarios of burden, which obviously indicate that blast burden influences vibration magnitude. The highest vibration magnitudes are produced by the biggest blast burden. Otherwise the lowest levels of vibration magnitude are produced by the smallest blast burden. Parallel with the main idea, which were mainly performed to check the influence of the blast burden to vibration magnitude, investigation was extended to measure fragmentation of the blasted rocks. Fragmentation measurement was achieved using the analysis of scaled photograph taken form a muckpile. Using software known as Split Engineering, the blasted rocks resulted from three scenarios of blast burden were simply calculated and presented in size distribution curve. The average fragment size increases exponentially with increasing blast burden.

収録刊行物

  • 資源と素材 : 資源・素材学会誌

    資源と素材 : 資源・素材学会誌 122(12), 573-581, 2006-12-25

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10018661279
  • 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
    8628082
  • 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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