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Publications tagged with [tunnel]

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<p>The tunnel may have to be constructed across a faulted zone as it is not always possible to avoid crossing active faults. In these situations, the tunnel must tolerate the expected fault displacements and seismic action, and allow<br />only minor damages ...
Reference: 15WCEE
Han S. , Cho H. et al.  
In tunnel construction, overcut along with undercut estimation is one of the most important factors to be considered before proceeding to the next operation. It is currently analyzed based on sparsely sampled points surveyed using a total station, but not ...
Reference: 012 Proceedings of the 29th ISARC, Eindhoven, The Netherlands
<p>This article describes briefly the main assessments on the approaches used by engineers in quantifying the seismic effect on an underground structure, both referring to deterministic either probabilistic methods. However, the main purpose is that of proposing ...
Reference: RIVISTA ITALIANA DI GEOTECNICA 2/2011
The report describes and evaluates the geological and geotechnical procedures currently used and reported for the ONKALO underground rock characterization facility. The geological and geotechnical mapping are conducted for tunnel support purposes but most ...
Reference: Working Report 2008-77
This paper discusses some of the problems encountered with water ingress on the 72km of tunnels on this project. Grouting is always a significant portion of dam projects and with the quantities of water expected in the tunnels, was also going to be an important ...
Reference: 6 th International Symposium on Ground Support in Mining and Civil Engineering Construction
The tunnels have been constructed following the NAT method, without top heading and benching, and therefore full face excavated with a total section of 80 m2, and tunnel pulls ranging from 2 to 4 m. The south section of both tubes, excavated in coluvial soils, ...
The inspection of the waste chips has consisted not only in the weight in the belt but also in the size and shape of the waste. Finally, the drilling parameters controlled were: - rate of advance - time of excavation - weight of material in the belt - thrust ...
Reference: ITA-AITES World Tunnel Congress 2007 - Underground Space - the 4th Dimension of Metropolises
Over 500 case histories were analysed in two years to bring the Rock Mass Excavability (RME) index to fruition and demonstrate its effectiveness on five current projects. It should be emphasised that the RME index does not replace the RMR or Q systems as used ...
Reference: Tunnels & Tunneling International, Sept. 2007
Electrical Resistivity Tomography (ERT) profiles along the axis of both tunnels. Also several geophysical investigation methods have been applied, in order to allow a good knowledge of the rock mass. In situ geotechnical tests have been also carried out, yielding ...
Reference: ITA-AITES World Tunnel Congress 2007 - Underground Space - the 4th Dimension of Metropolises
The Bolu Tunnels lie along Trans European Motorway (TEM) which is connecting Eastern Europe with the Middle East. The tunnels are approximately 3.0 km long, 40 m apart and have excavated cross sections more than 200 m2. In construction, New Austrian Tunneling ...
Reference: "THE GRADUATE SCHOOL OF NATURAL AND APPLIED SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY, 2006"