Abstract -Modern and traditional Tunneling methods
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ITA SEE 2011 Dubrovnik April 7-9, 2011, Hotel Congress Centre “Lacroma”, Dubrovnik, Croatia Theme 4. Choosing the right construction methods and technologies in tunnelling Alexandra Raluca Moldovan 1 , Trifan Alexandru Hulpus 2 ([email protected] ; [email protected] ) Nowadays, tunnels are used in order to overcome the overabundance of humans and scarcity of horizontal space. The infrastructure development is increasing from one year to another and a practical and undisturbed solution for human daily activity is the construction of underground structures. Tunnels are used for different utilisation such as : passage of road, rail traffic, vehicular passage, aqueducts and canals. It is often cost-effective as an alternative to over-ground solutions, when the risk and costs of disruption during construction is taken into account. [ Alan Graham ,2002] Understanding the Subsurface construction is much more complex than building on the surface. Choosing the method that may be used for a specific tunnels depends on several factors including geology, ground conditions, the ground water conditions, the length and diameter of the tunnel drive, the depth of the tunnel, the logistics of supporting the tunnel excavation, the final use and shape of the tunnel and appropriate risk management manage, costs, potential disruption of other activities. [Brian Webber, 1997]. In order to make a good decision regarding the proper tunneling method for specific works a deep knowledge regarding all types of tunneling methods, with their advantages, disadvantages and as a consequence their limitation; needs to be known. The objective of this paper is to describe the characteristics that have to be taken into account when choosing the right tunnelling method (Immerse tube tunnelling,
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Transcript of Abstract -Modern and traditional Tunneling methods
ITA SEE 2011 DubrovnikApril 7-9, 2011, Hotel Congress Centre “Lacroma”, Dubrovnik, Croatia
Theme 4. Choosing the right construction methods and technologies in tunnelling
Alexandra Raluca Moldovan1, Trifan Alexandru Hulpus2
([email protected] ; [email protected])
Nowadays, tunnels are used in order to overcome the overabundance of humans and scarcity of horizontal space. The infrastructure development is increasing from one year to another and a practical and undisturbed solution for human daily activity is the construction of underground structures. Tunnels are used for different utilisation such as : passage of road, rail traffic, vehicular passage, aqueducts and canals.
It is often cost-effective as an alternative to over-ground solutions, when the risk andcosts of disruption during construction is taken into account.[ Alan Graham ,2002]
Understanding the Subsurface construction is much more complex than building on the surface. Choosing the method that may be used for a specific tunnels depends on several factors including geology, ground conditions, the ground water conditions, the length and diameter of the tunnel drive, the depth of the tunnel, the logistics of supporting the tunnel excavation, the final use and shape of the tunnel and appropriate risk management manage, costs, potential disruption of other activities. [Brian Webber, 1997]. In order to make a good decision regarding the proper tunneling method for specific works a deep knowledge regarding all types of tunneling methods, with their advantages, disadvantages and as a consequence their limitation; needs to be known.
The objective of this paper is to describe the characteristics that have to be taken into account when choosing the right tunnelling method (Immerse tube tunnelling, Cut-and-cover method,drill-and-blast method, Conventional tunnelling method, NATM,shield driving or tunnel jacking method, Raise-bore method, TBM) .
A brief introduction will be presented for existing tunnelling methods (mentioned before) used in the past and the more actual methods developed nowadays and their technology. Limitation of tunnelling methods will be described and solutions used to overcome this limitation will be presented in the paper.
Key words: tunnels, technologies, tunnelling methods, tunnelling advantages,disadvantages, limitation of tunnelling methods
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1 PhD Student, Technical University of Cluj-Napoca , Faculty of Civil Engineering Department of Geotechnics and Foundation Engineering , Technical University from Cluj-Napoca, Memorandumului street nr. 28, 400114 Cluj, Romania email: [email protected] ; [email protected])2 PhD Student, Technical University of Cluj-Napoca , Faculty of Civil Engineering Department of Geotechinics and Foundation Engineering , Technical University from Cluj-Napoca, Memorandumului street nr. 28, 400114 Cluj, Romania email: [email protected]
