Prague underground tunnels
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| Prague underground tunnels crossing Vlatava River |
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| The project for the construction of tunnels as part of the new extension of Prague’s Underground was faced with certain space limitations due to the location of an existing station. In addition, the particularly rough terrain in the area had considerable influence on the position of the planned station. At the place of crossing, the line is located at a depth of only one metre under the riverbed of the Vlatava. This minimal depth of the overlaying formation prevents the use of the tunnelling method, and therefore there remains only one “classical“ method of construction – cofferdams. It was decided to use three cofferdams for the tunnel crossing situated in the Vlatava stream channel. |
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 Prague underground tunnels (PDF, 121 KB) |
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