Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Predicting ground conditions ahead of the tunnel face by vector orientation analysis
AbstractTunnel construction frequently makes use of radial displacements to monitor tunnel support performance, particularly in complex ground conditions. In recent years, absolute displacement monitoring methods have replaced the more traditional radial convergence measurements. It has been suggested by Schubert and Budil (1995) [The importance of longitudinal deformation in tunnel excavation. In: Fujii, T. (Ed.), Proceedings of the 8th ISRM Congress on Rock Mechanics, Tokyo, vol. 3. A.A. Balkema, Rotterdam, pp. 1411–1444.] that these near-face displacements could also be used to forecast the tunnel conditions ahead of the advancing tunnel face. This paper presents the results from a series of detailed three-dimensional analyses in varying ground conditions, which compares vertical (radial) displacements measured at the roof, vector orientations associated with these roof displacements and tunnel face displacements (extrusion). These numerical results suggest that in all cases vector orientation provided additional information not obtained from traditional radial displacements or face extrusion. If interpreted correctly the vector orientations could provide advanced warning of changing ground conditions in the vicinity of the tunnel face.
Predicting ground conditions ahead of the tunnel face by vector orientation analysis
AbstractTunnel construction frequently makes use of radial displacements to monitor tunnel support performance, particularly in complex ground conditions. In recent years, absolute displacement monitoring methods have replaced the more traditional radial convergence measurements. It has been suggested by Schubert and Budil (1995) [The importance of longitudinal deformation in tunnel excavation. In: Fujii, T. (Ed.), Proceedings of the 8th ISRM Congress on Rock Mechanics, Tokyo, vol. 3. A.A. Balkema, Rotterdam, pp. 1411–1444.] that these near-face displacements could also be used to forecast the tunnel conditions ahead of the advancing tunnel face. This paper presents the results from a series of detailed three-dimensional analyses in varying ground conditions, which compares vertical (radial) displacements measured at the roof, vector orientations associated with these roof displacements and tunnel face displacements (extrusion). These numerical results suggest that in all cases vector orientation provided additional information not obtained from traditional radial displacements or face extrusion. If interpreted correctly the vector orientations could provide advanced warning of changing ground conditions in the vicinity of the tunnel face.
Predicting ground conditions ahead of the tunnel face by vector orientation analysis
Jeon, J.S. (Autor:in) / Martin, C.D. (Autor:in) / Chan, D.H. (Autor:in) / Kim, J.S. (Autor:in)
Tunnelling and Underground Space Technology ; 20 ; 344-355
14.01.2005
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Predicting ground conditions ahead of the tunnel face by vector orientation analysis
| Online Contents | 2005
Predicting ground conditions ahead of the tunnel face by vector orientation analysis
| British Library Online Contents | 2005
| British Library Conference Proceedings | 2014
Site Experiment for Predicting Hazardous Geological Formations ahead of Tunnel Face
| Trans Tech Publications | 2006