Civil Engineering Reference
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have resulted in an enormous delay of the boring process. The structure
would continually have to be built-in and out and with this the production
would reduce to a maximum of 1 to 2 rings per day.
Fig. 11.5
Parts of the stabilizing
ring on the site in
Terneuzen
Enormous jack forces cause a problem
At the same time as the shield deformations, there was another pro-
blem which was perhaps associated with the deformations: for the boring
Fig. 11.6
The jacks of the tunnel
boring machine
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