RMR 및 Q 분류시 지하수 조건 평가방법에 관한 사례 연구

A Case Study for Evaluating Groundwater Condition in RMR and Q Rock Mass Classification on Bard Rock Tunnel

  • 발행 : 2003.10.01

초록

터널 조사계획 혹은 공사중, RMR 및 Q분류법에 따라 암반분류를 수행하는데 있어 지하수조건에 대한 평가는 가능한 조건들의 제약 때문에 경험적 방법에 의존하고 있다. 절리 수압 및 지하수 유입량 측정, 수리전도도 모델 산정, 3차원 수치해석 및 해석해 방법을 사용한 대전 LNG Pilot Cavern의 결과를 바탕으로, 지하수 조건 평가에 관한 합리적인 접근 방법을 비교 검토하였다. 그 결과, Raymer(2001) 이론해 방법이 예비 조사단계에서 유용한 도구로 활용될 수 있음을 검증하였다.

For RMR and Q rock mass classification at the design and construction stage, evaluation of groundwater condition is usually based upon the experience due to the restriction of available methods. Based on the results of Taejon LNG Pilot Cavern which acquire joint water pressure, inflow rate of ground water and hydraulic conductivity model, estimates from numerical analysis and analytical solutions were compared to verify each evaluation method. As the result, the Raymer(2001) approach was found to be efficient for estimating inflow rate and corresponding value.

키워드

참고문헌

  1. Rock Mech. v.6 no.4 Engineering classification of rock masses for the design of tunnel support Barton,N.R.;Lien,R.;Lunde,J.
  2. Engineering rock mass classifications Bieniawski,Z.T.
  3. Engineering Geology v.2 Groundwater inflow during tunnel driving Goodman,R.;D.Moye;A.Schalkwyk;I.Javendel
  4. Proceedings of the rapid Excavation and Tunneling Conference Estimating rock tunnel water inflow Heuer,R.E.
  5. 2001 Proceedings: Rapid Excavation and Tunneling Conference Predicting Groudwater Inflow into Hard-Rock Tunels: Estimating the High-End of the Permeability Distribution Raymer,J.H.;W.H.Hansmire(ed.);I. Michael Gowring(ed.)
  6. TAEJON Pilot LNG Cavern Fracture characterization from CSI results(TAE/R/D/1005A) SK Engineering & Construction;Geostock;S.N.Technigaz