About one third of the length of operating lines of the Prague Metro found in the central area of Prague were inundated during the flood in August 2002. The construction of a new flood-protection system commenced immediately, when the damage caused by the flood had been repaired and the metro lines operation had resumed. Analyses and the assessment of the flood impacts showed that the flood wave threatens most of all cut-and-cover structures of the metro lines which are founded near to the surface, namely by increased external hydrostatic pressure and/or the hydrodynamic effects of this pressure. Mined metro sections are virtually unthreatened in these cases. Protection of the cut-and-cover structures is provided by several basic types of traditional construction measures. The structural parts found in the flooded zone are reinforced or thickened, permanently anchored, braced or supercharged. Structures which are selected with respect to their design and local hydrogeological conditions are provided with elements relieving the hydrostatic pressure on the outer surface of stations and concourses.
Start of documentation process
01.12.2002
End of documentation process
30.09.2005
Start of realization
30.10.2003
End of realization
30.12.2005
investment costs
750
mil. Kč
Projector
Metroprojekt Praha, a.s. (Pekárek,V., Jakoubek, M. a kol.)
The study deals with the design of the driven structures of the ship lift at the Slapy Dam, which is some 35 km upstream from Prague on the River Vltava. The dam profile is the main reason why the water route from Prague to České Budějovice is not navigable for ships of tonnage up to 300 tons. At present studies deal with several variants of the ship lift structure. Despite the fact that none of the variants has been chosen for further stages of the project preparation, the text describes in detail only two of the planned variants – the lock with high lift and the sloping ship lift. More...
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