A study on the interpretations of tunnel convergence function parameters

The introduction of geodetic methods of absolute displacement monitoring in tunnels has significantly improved the value of the measurements. Structurally controlled behavior and influen- ces of an anisotropic rock mass can be determined, and the excavation and support adjusted accordingly. Three-dimensional finite element simulations of different weakness zone properties, thicknesses, and orientations relative to the tunnel axis were carried out and the function parameters were evaluated from the results. The results were compared to monitoring results from Alpine tunnels in heterogeneous rock. The good qualitative correlation between trends observed on site and numerical results gives hope that by a routine determination of the function parameters during excavation the prediction of rock mass conditions ahead of the tunnel face can be improved. Implementing the rules developed from experience and simulations into the monitoring data evaluation program allows to automatically issuing information on the expected rock mass quality ahead of the tunnel.

keywords: Tunnel convergence, function parameter, heterogeneous, Tunnel convergence, function parameter, heterogeneous, 터널 내공변위, function parameter, 비균질성

Reference

(2003) 터널 내공변위 Function Parameter 결정에 관한 연구,

(1991) 지하 양수발전소 설계를 위한 불연속 암반의 2차원 및 3차원 응력해석,

(2003) ALPEN STRASSE-AG Tunnel Strengen , Unpublished site data.

(1986) Interpretation of Tunnel Convergence Measurements,

(2003) Investigation of fault zones on displacements,,

(2002) Untersuchung der GeoFit- Parameterverlaeufe am Beispiel Inntaltunnel,

(2001) Tunnelling in Heterogeneous Ground-Numerical Investigation of Stress and Displacement,

(2003) Tunnelling in heterogeneous ground-stresses and displacements ,

(1982) Analysis of Convergence behind the Face of a Tunnel . Tunnelling 1982,

10.

(1996) Dealing with Squeezing Conditions in Alpine Tunnels,

11.

(1996) The Importance of Longitudinal Deformation in Tunnel Excavation,

12.

(2002) Displacement Monitoring in Tunnels- an Overview ,,

13.

(2000) Prediction of Displacement in Tunnelling,

14.

(1987) Closure Analysis in Deep Tunnels Int. Journal of Rock Mechanics and Mining Science,

15.

(1998) Short Term Prediction of Rock Mass Behavior in Tunnelling by Advanced Analysis of Displacement Monitoring Data ,

16.

(2002) Effect of Elastic Anisotropy on Tunnel Wall Displacements Behind a Tunnel Face , Rock Mech. Rock Eng., ,

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Article Contents

Vol.6 No.3

A study on the interpretations of tunnel convergence function parameters

Abstract

Reference

(사)한국터널지하공간학회