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A study on the behaviour of boulders in ore pass systems

Research Project

Project/Area Number 62460183
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 資源開発工学
Research InstitutionUniversity of Tokyo

Principal Investigator

YAMAGUCHI Umetaro  University of Tokyo, 工学部, 教授 (60010740)

Co-Investigator(Kenkyū-buntansha) MOGI Gento  University of Tokyo, 工学部, 助手 (70182160)
SHIMOTANI Takakoto  University of Tokyo, 工学部, 助教授 (30011125)
Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 1988: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1987: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsLimestone mining / Shaft / Surface mining / Powder technology / 立坑詰り / 石灰石鉱山 / 鉱石シュート / 貯鉱舎 / 粉粒体
Research Abstract

A bench cut method combined with a large-scale ore pass system, connecting the bench and the crushing room, is widely adopted to our domestic limestone quarries which are usually located in mountainous areas. This combined method has been developed mainly in Japan and made a significant contribution to the improvement of quarry productivity.
In spite it has many advantages to use an ore pass system for ore transportation, there are two major problems remained to be solved. The first one is the so called "hanging" problem and the second is the quality control of quarry products. The purpose of this study is to solve these problems by clarifying the behaviour of boulders in ore pass systems. After two years of research, following noteworthy results have been obtained. Some of them have already been published as papers and peports.
1. The principle mechanism of the behaviour of boulders in the ore pass, to which its size distribution and the cohesion of fines affect predominantly, has been quantitatively comprehended.
2. Some guidelines to design ore pass system, free from clogging problem, have been proposed.
3. It is clarified that mixing in the ore pass is mainly caused by the velocity difference in its cross-section which will be generated at the chute.
4. Possibility of quality control using ore pass system has been suggested.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 茂木源人,福岡洋一: 石灰石. NO.235. 17-35 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] G.MOGI;U.YAMAGUCHI: Proceedings of the International Symposium on Mine Planning & Equipment Selection,Calgary,3ー4 Nov.,1988. 95-106 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 茂木源人,山口梅太郎,下谷高灑: 日本鉱業会 研究・業績発表講演会講演要旨集(昭和63年度春季大会). 329-330 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 茂木源人,鏑木寛,茂田井〓: 日本鉱業会 研究・業績発表講演会講演要旨集(昭和63年度春季大会). 331-332 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 茂木源人,山口梅太郎: 資源・素材学会 研究・業績発表講演会講演要旨集(平成元年度春季大会). (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 茂木源人,鏑木寛,茂田井〓: 資源・素材学会 研究・業績発表講演会講演要旨集(平成元年度春季大会). (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] G. MOGI; Y. FUKUOKA: "Gravity flow of bulk solids in ore pass systems" LIMESTONE. No. 235. 17-35 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] G. MOGI; U. YAMAGUCHI: "Production scheduling based on mixing properties of ore in large-scale ore pass systems." Proceedings of the International Symposium on Mine Planning & Equipment Selection, Calgary, 3-4 Nov., 1988. 95-106 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] G. MOGI; U. YAMAGUCHI: "Behaviour of coarse granular materials in ore pass systems (First report)" Proceedings of the Annual Spring Meeting of MMIJ, 1988. 329-330 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] G. MOGI; H. KABURAKI; H. MOTAI: "Case study of "Hanging" in ore pass" Proceedings of the Annual Spring Meeting of MMIJ, 1988. 331-332 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] G. MOGI; U. YAMAGUCHI: "Behaviour of coarse granular materials in ore pass systems (Second report)" Proceedings of the Annual Spring Meeting of MMIJ, 1989. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 茂木源人,福岡洋一: 石灰石. No.235. 17-35 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] G.MOGI,U.YAMAGUCHI: Proceedings of the Internatinal Symposium on Mine Planning & Equipment Selection,Calgary,3-4 Nov.,1988. 95-106 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 茂木源人,山口梅太郎,下谷高灑: 日本鉱業会 研究・業績発表講演会講演要旨集(昭和63年度春季大会). 329-330 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 茂木源人,鏑木寛,茂田井斉: 日本鉱業会研究・業績発表講演会講演要旨集(昭和63年度春季大会). 331-332 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 茂木源人,山口梅太郎: 資源・素材学会 研究・業績発表講演会講演要旨集(平成元年度春季大会). (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 茂木源人,鏑木寛,茂田井斉: 資源・素材学会 研究・業績講演会講演要旨集(平成元年春季大会). (1989)

    • Related Report
      1988 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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