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Improvement on efficiency and reliability of Full-Face Tunneling Boring Machine

Research Project

Project/Area Number 09555319
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 資源開発工学
Research InstitutionThe University of Tokyo

Principal Investigator

OKUBO Seisuke  The University of Tokyo, Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (90092155)

Co-Investigator(Kenkyū-buntansha) AKIYAMA Masao  The University of Tokyo, Graduate School of Engineering, Assistant, 大学院・工学系研究科, 助手 (00011172)
FUKUI Katsunori  The University of Tokyo, Graduate School of Engineering, Associate Professor, 大学院・工学系研究科, 助教授 (70251361)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1998: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1997: ¥5,400,000 (Direct Cost: ¥5,400,000)
KeywordsTBM / Rock Mass / Strength / bedrock survey / Schmidt-hammer rebound hardness / Thrust / Torque / Reliability / 岩石 / 岩盤掘削 / 岩盤強度 / 岩盤物性 / 機械振動 / トンネル
Research Abstract

At present, various types of tunneling boring machines (TBMs) are widely used as a substitute for conventional tunneling methods. The performance of TBM is potentially far better than that of conventional methods. However, TBM performance is very poor when applied under conditions that are adverse to TBM.Therefore, measuring geological characteristics forward of the face is essential in order to improve the efficiency of TBM.
In the present study, a method for estimating the rock strength of face using TBM cutting force, such as thrust, torque and cutting depth, is proposed. Rock strength along the tunnels is estimated from actual excavation data for sections a few hundred meters in length. The estimated strengths were then compared with those obtained using the bedrock survey and Schmidt-hammer rebound hardness. Estimated rock strengths were found to agree well with those found using these surveys. Moreover, the relationships between rock mass classification and estimated rock strength are discussed. The estimated rock strength was found to be in good agreement with the rock mass classification. Therefore, the proposed method provides a useful method for properly selecting a supporting pattern for rapidly changing rock mass characteristics, thereby preventing accidents and reducing construction time and expense.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 領家邦泰: "硬岩用自由断面掘削機の掘削体積比エネルギーと岩盤特性" 土木学会論文集. No.603 III-4. 89-100 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kuniyasu RYOKE: "Specific Energy of a Hard-Rock Tunneller and Rock Properties" Journal of the Japan Society of Civil Engineers. No.603, III-44. 89-100 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 領家邦泰: "硬岩用自由断面掘削機の掘削体積比エネルギーと岩盤特性" 土木学会論文集. No.603 III-44. 89-100 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 松本一騎: "硬岩自由断面掘削機の掘削抵抗" 資源・素材学会 平成9年秋季大会 企画発表・一般発表(D)資料 資源開発. 89-92 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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