Study on the Workability of Raise Boring Machine in Korea

국내 Raise Boring Machine의 굴착능력에 관한 연구

  • 이석원 (한국건설기술연구원 지반연구부) ;
  • 조만섭 (㈜유니벡 제1사업본부) ;
  • 배규진 (한국건설기술연구원 지반연구부)
  • Published : 2003.06.01

Abstract

In order to investigate the workability of Raise Boring Machine(RBM) such as utilization, penetration rate and advance rate, a vertical shaft of 98 m in length and 3.05 m in diameter was constructed in the layer of conglomerate by using the RBM in this study. In addition, field data from tow different construction sites including water-pump power plant tunnel, roadway tunnel and mining tunnel by RBM were collected and analyzed. The results show that the average weekly bored length is 19.3 m and its average utilization is between 54.3 % and 75.1 % very higher than that of the TBM(Tunnel Boring Machine). It also turns out that the bit force increases linearly with respect to the increase of the RPM(revolution per minute) of RBM. However, the net penetration rate decreases with the increase of bit force, RPM of RBM and depth of shaft. The findings of this study can be used to provide the useful information for the design of shaft and the selection of RBM.

Keywords

RBM;Shaft tunnel;Penetration rate;Utilization;Advance rate;RBM

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