• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Mechanism elucidation of rotary percussive rock drilling and improvement of its numerical simulator with high accuracy

Research Project

Project/Area Number 21H01867
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 31020:Earth resource engineering, Energy sciences-related
Research InstitutionThe University of Tokyo

Principal Investigator

Hashiba Kimihiro  東京大学, 大学院工学系研究科(工学部), 准教授 (60456142)

Co-Investigator(Kenkyū-buntansha) 福井 勝則  東京大学, 大学院工学系研究科(工学部), 教授 (70251361)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
Fiscal Year 2023: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2022: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2021: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Keywordsロータリーパーカッション掘削 / 打撃穿孔 / さく岩機 / 数値シミュレーション / ロータリーパーカッション / 岩盤 / 掘削 / シミュレータ
Outline of Research at the Start

本研究では,ロータリーパーカッション掘削の複雑な機構のうち,「応力波の高速伝播機構」と「ビットによる岩盤の衝撃破壊機構」を解明する.それらの機構をモデル化し,申請者が開発したロータリーパーカッション掘削のシミュレータに組み込む.さらに,シミュレータによる感度解析により,ロータリーパーカッション掘削の高度化に適した条件を抽出し,その結果を試作品により検証する.

Outline of Final Research Achievements

In this study, to clarify the mechanism of rotary percussive rock drilling, new test apparatuses were developed with a button bit and single button tips. The tests with these apparatuses revealed the stress wave propagation in rods, the behavior of a rock drill and the dynamic rock failure by the button bit during consecutive percussions, and the penetration of button tips into rock, which have led to the modeling of force-penetration curves of the bits. In addition, the penetration process of the bits into rock was realized by three-dimensional numerical simulation.

Academic Significance and Societal Importance of the Research Achievements

岩盤のロータリーパーカッション掘削は,他の掘削機械には見られない高速かつ複雑な機構を持つため,機構の解明やモデルの構築は十分にはなされていなかった.本研究では,新たに開発した装置により,高速な連続打撃中の荷重-貫入量曲線を精度良く求めることに世界で初めて成功するとともに,個々のボタンチップの貫入の機構を明らかにした.これらの結果をもとに構築したモデルや数値シミュレーションは,今後のロータリーパーカッション掘削の高度化に大きく寄与する.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (7 results)

All 2024 2023 2022

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (4 results)

  • [Journal Article] さく岩機用ビットの岩盤への貫入特性2024

    • Author(s)
      羽柴公博,福井勝則
    • Journal Title

      Journal of MMIJ

      Volume: -

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Tip Diameter on Static Penetration of a Button Tip into Rock2023

    • Author(s)
      羽柴公博,福井勝則
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 72 Issue: 5 Pages: 369-375

    • DOI

      10.2472/jsms.72.369

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2023-05-15
    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Review of theoretical, experimental, and numerical studies on rotary percussive rock drilling2023

    • Author(s)
      Hashiba K.、Fukui K.
    • Journal Title

      International Journal of Mining, Reclamation and Environment

      Volume: 38 Issue: 2 Pages: 167-191

    • DOI

      10.1080/17480930.2023.2276572

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Presentation] Edge chipping test with rock using a single button bit2024

    • Author(s)
      Jiacheng Song, Kimihiro Hashiba, Katsunori Fukui
    • Organizer
      資源・素材学会2024年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ボタンチップの岩石への貫入挙動の数値シミュレーション2023

    • Author(s)
      徐暁晟,羽柴公博,福井勝則
    • Organizer
      資源・素材2023(松山)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 油圧さく岩機を用いた打撃穿孔試験に関する検討2023

    • Author(s)
      吉原勇斗,羽柴公博,福井勝則,松田年雄
    • Organizer
      資源・素材学会2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 打撃式さく岩機を用いたボタンビットの衝撃貫入試験に関する検討2022

    • Author(s)
      樋山大郎,羽柴公博,福井勝則,松田年雄
    • Organizer
      資源・素材学会2022年春季大会
    • Related Report
      2021 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi