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

全断面掘进机效率和可靠性的提高

• 批准号: 09555319
• 负责人: OKUBO Seisuke
• 金额: $ 4.1万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555319/
• 关键词: TBM; 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

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.

目前，各种类型的隧道钻孔机（TBM）被广泛用作常规隧道方法的替代品。 TBM的性能远远远远胜于常规方法。但是，在对TBM不利的条件下应用的情况下，TBM性能非常差，因此，为了提高TBM的效率，测量面部的地质特征是必不可少的，这是本研究的效率，这是一种使用TBM切割力（例如推力，扭矩和切割深度）估算面部岩石强度的方法。沿隧道的岩石强度是根据几百米长的实际发掘数据估算的。然后将估计的强度与使用基岩调查和Schmidt-Hammer反弹硬度获得的强度进行比较。发现估计的岩石强度与使用这些调查发现的岩石强度非常吻合。此外，讨论了岩石质量分类与估计岩石强度之间的关系。发现估计的岩石强度与岩石质量分类非常吻合。因此，所提出的方法提供了一种有用的方法，用于正确选择迅速变化的岩体特征的支撑模式，从而防止事故并减少施工时间和费用。

项目成果

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)

Kuniyasu RYOKE：“硬岩隧道的比能和岩石特性”日本土木工程师学会杂志。