method and device for a ausspeichern of luttentouren in roadways and tunnelvortrieben

摘要

Procedure for storing a flexible duct in a storage tube during erecting of a stationary ventilating line in tunnel or roadway drivage by which the flexible duct is first separated from the stationary ventilating line. Subsequently the free end of the storage tube and the duct is air sealed closed and in the enclosed part of the duct and the storage tube created a vacuum. Due to the vacuum the free end of the duct is sucked in the storage tube forming parallel circumferential loops. The flexible duct is connected to the stationary line by means of a storage attachment tube fitted with a closing cap. The storage tube is forming a storage outlet tube provided with an auxiliary tube for connecting it to a vacuum producer and fitted with a flap valve, and includes an end piece fitted with a second flap valve.