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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
<p>A model for probabilistic assessment of excavation performance of tunnel projects is presented. The model is based on Dynamic Bayesian Networks (DBN) and enables to consider the quality of the design and construction process. It is applied on a case study, ...
Reference: ISGSR 2011: proceedings of the 3rd International Symposium on Geotechnical Safety and Risk, Munich, Germany, June 2-3, 2011
<p>This paper describes the role of the Geotechnical Engineering Office, Civil Engineering and Development Department of the HongKong Special Administration Region (HKSAR) Government in exercising geotechnical control for a major railway project in HongKong. ...
Reference: Geotechnical Aspects of Underground Construction in Soft Ground – Ng, Huang & Liu (eds), © 2009 Taylor & Francis Group, London
<p>The design of NATM tunnels are often done in two dimensions, even though there are limitations. This paper uses the results from the simulation of a NATM tunnel using finite element method in three dimensions to illustrate a few observations that may aid ...
Reference: International Journal of the JCRM vol.5 (2009) pp.33-38
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
<p>The paper describes the selected significant developments, with the emphasis on the following findings: Charts are presented for more accurate determination, of the five input parameters of the RME, using graphical representation. New expressions to evaluate ...
Reference: ITA-AITES World Tunnel Congress 2008, Agra, India
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, ...