Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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A Study on the Proper Transfer Distance for Minimizing Air Flotation Loss of Backfilling Material of NATM Composite lining Tunnel in the Model Test

충진 모형실험을 통한 NATM Composite 라이닝 터널 뒤채움재의 기포손실 최소화를 위한 적정 이송거리 고찰

  • Ma, Sang-Joon (Geotechnical Disaster & Environment Research Dept., Korea Institute of Construction Technology) ;
  • Choi, Hee-Sup (Geotechnical Disaster & Environment Research Dept., Korea Institute of Construction Technology) ;
  • Lee, Heung-Soo (Geotechnical Disaster & Environment Research Dept., Korea Institute of Construction Technology) ;
  • Kim, Kyung-Duk (Central Research Center, Hanil Cement CO.)
  • 마상준 (한국건설기술연구원 지반방재환경연구실) ;
  • 최희섭 (한국건설기술연구원 지반방재환경연구실) ;
  • 이흥수 (한국건설기술연구원 지반방재환경연구실) ;
  • 김경덕 (한일시멘트공업(주) 중앙연구소 레미탈팀)
  • Published : 2008.10.10
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Abstract

In this paper, result of whole test, When the Transfer Distance is increasing, Strength of Backfilling Material of NATM Composite lining Tunnel due to increasing Gravity was increased, but that is higher the Air Flotation than increasing Strength. So, That was predicted a drop of Permeability. And Performing the placing Lightweight Foamed Mortar, we think that it's performance in drain material was lost. Therefore We conclude that Proper Transfer Distance that taking Permeability through minimizing of Air Flotation Loss and getting the Need Strength is 50m.

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