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method for sealing of the schildschwanzes in schildvortrieben with poet under luftüberdruck standing abbaukammer and vortriebsschild for implementation of the procedure
method for sealing of the schildschwanzes in schildvortrieben with poet under luftüberdruck standing abbaukammer and vortriebsschild for implementation of the procedure
by injection of an appropriate fluid, for example bentonitsuspension - from the schildinnern in the annular gap between the schildmantel mountains and escape of compressed air from the working chamber
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