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Publications by [Celada B.]

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<p>The Rock Mass Rating (RMR) System was introduced over 40 years ago, and since then has become a worldwide reference, along with the Q system, for design applications involving estimation of rock mass properties and tunnel support. A massive database of ...
Reference: Proceedings of the World Tunnel Congress 2014 – Tunnels for a better Life. Foz do Iguaçu, Brazil.
An essential characteristic of this stretch is that it has been built under the water table by excavating in very heterogeneous soils, composed of granular soils and rocks of considerable resistance which has created numerous problems during the construction ...
Reference: ITA Congress, Budapest, 2009
Specific correlations developed to predict the Rate of Advance for open TBMs, double-shields and single-shields, using the RME index are presented.
Reference: ITA Congress, Budapest, 2009
Recording drilling parameters is a useful and economical technique for acquiring geomechanical information of rock mass parameters. Although it is not usually emplyed at geotechnical boreholes it is systematically used in TBM. This paper shows the obtained ...
Reference: ITA-AITES World Tunnel Congress 2009, Budapest, Hungary
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
The 570 m long Tarifa Experimental Gallery has allowed the investigation of three of the five flysch units involved in the future tunnel of Gibraltar. This Tunnel will have a length of 38 km approximately and will cross the Strait. For this reason, the results ...
Reference: International Conference on Geothecnical & Geological Engineering, Melbourne
This paper presents the methodology used to characterise the weaker zones of Le Perthus tunnel. Two phase investigation, one with in situ and laboratory testing and second with pilot tunnel.
Reference: Tunelling under difficult conditions. 1-901808-01-7. ITC, London 1997