No document
Search & filter
Search for a publication
Search & filter
List of products by author: T. Dickmann
-
Correlating rock support and ground treatment means with in -tunnel seismic data
Abstract: Tunnelling is a challenging task since it demands recurrent interaction and good understanding of the various disciplines of geotechnical engineering, geology and geophysics among others. Moreover, during tunnel excavation quantitative and qualitative data is continuously gathered by instruments and personnel from all these disciplines. Finding and understanding correlations between such...
0,00 € -
How to turn geological uncertainty into manageable risk?
Abstract: Risk management became an integral part of most underground construction projects during the last decade. Still, there are parties, who may not plan for insubstantial unknown uncertainties of ground conditions because they are so unpredictable and out of scope of normal planning as they think. Finally, many of them end up as the most catastrophic events. Even known geological uncertainty is a...
0,00 € -
Optimization of Tunnel Seismic operations for fast and continuous investigations ahead of the face
Abstract: The knowledge of the geological ground conditions and its geotechnical parameters is still the major problem for driving of a tunnel. Although, underground construction works are increasingly carried out under difficult soil and rock conditions. Significant geological boundaries that cut the tunnel axis can cause serious problems such as large break-outs, collapses, flooding and rush-ins during...
0,00 € -
Tunnel seismic investigations at low overburden in subsea tunnels
Abstract: Tunnel seismic prediction while excavation is an attractive technology for underground rock mass characterisation due to the short downtime needed for data acquisition and fast data processing and evaluation. By recording the full wave-field of reflected signals, prediction of the rock mass quality up to 200 m ahead of the face is possible and 3D velocity distribution images can be generated by...
0,00 € -
Understanding Geotechnical Condition s in the Headrace Tunnel ofUma Oya Project, Sri Lanka
Abstract: The breakthrough of the 15.4 km Headrace Tunnel (HRT) of Uma Oya Multipurpose Development Project, which was excavated with two hard rock double shield TBMs of 4.3 m diameter, was achieved on 2nd of October 2019 after water ingress was challenging the excavation operations. One of the TBMs excavated upwards from HRT outlet and the other one excavated downwards from HRT Intake. HRT faced...
0,00 €
