Forecasting Final Displacement With Displacement Functions Using Deformation Measurements While Constructing a Tunnel

계측치와 변위함수에 의한 시공 중인 터널의 최종변위 예측

  • 김치환 (우석대학교 토목환경공학과)
  • Received : 2010.10.25
  • Accepted : 2010.12.01
  • Published : 2010.12.31

Abstract

It is important to forecast the final deformation of a tunnel during construction for evaluating its mechanical stability. In this study, the final deformation of a tunnel is forecasted by fitting tunnel deformations measured while excavating to a displacement function and exterpolating it. The tunnel for the study was built in two stages divided into an upper and a lower part. During the lower part construction of the tunnel, the displacement function forecasts the final incremental displacement well compared to the increment measured after completion of the tunnel. It is because the critical initial displacement occurred on passing the measurement pins can be adequately measured during excavating the lower part, which can not be measured during the upper part excavation of the tunnel.

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