... characterisation. This paper presents a methodology to digitise tunnel rock surfaces using Structure from Motion digital photogrammetry for remote measurements of discontinuities. The proposed method is applied on a 12 m long and 4 m high tunnel section of an underground research tunnel at Aalto University...

... ABSTRACT: In the course of the design and construction of the Boβler tunnel it is investigated whether and how it is possible to extend the tunnel sections, which are excavated with a tunnel boring machine, in comparison with the lengths determined in the contract. In this connection...

... rosenstein-tunnel stuttgart ground transportation neckartalstraße tunnel section excavation work urban condition access tunnel tunnel portal tunnel Stuttgart ?? ABSTRACT: In Stuttgart, the Rosenstein-Tunnel is currently under construction in combination with the third Leuze-Tunnel, which is also...

... of the applied tunnel support. Convergence Confine- ment Method is used to analyze rock support interaction and evaluate the effectiveness of applied support at 198 different tunnel sections of Kaligandaki A headrace tunnel from the Nepal Himalaya. Numerical modelling of selected sections has been done...

... Abstract TSI and SAF methodologies have been applied to 6 tunnels located in Spain, Iran and Chile to estimate the regional tectonic in-situ stress (K) and the increment of the principal horizontal stress over the regional horizontal stress in a particular tunnel section (SAF). For high values...

.... The attendees were asked to submit their mapping sheets for a post-study. teaching method Reservoir Surveillance skyline machine learning Artificial Intelligence mapping production control production logging tunnel section production monitoring Barton participant rock mass classification...

... normalized displacement boundary condition plastic zone means plastic radius tunnel section rock mass deformation displacement tunnel face excavation normalized plastic radius numerical model Tunnel Stability eurock 2012 Convergence Confinement Method Extending the Convergence...

... assumption fracture system inflow Reservoir Characterization fracture characterization conceptual model tunnel section Fracture Zone rock mass fracture tunnel Characterization of Rock in 2D and 3D for Grouting L. Hernqvist Vectura, Gothenburg, Sweden. Previously: Division of GeoEngineering...

... crown to the surface ranging from 6 m to 70 m. In the course of the conceptual design, a comprehensive exploratory programme was carried out for this tunnel section, including 7 core drillings as well as geophysical investigations (geoelectrics, refraction seismics and reflection seismics). During...

... of tunnel sections are very useful for engineers and currently used in practice. In order to reproduce the effects of tunnel face excavation and progress, these methods use either varying softening of elements inside tunnel section, or a variable fictitious stress state at the tunnel wall, as in convergence...