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SHIELD DIGGING IN PARTICULAR FOR DIGGING WITH A FRONT SLAUGHTER SCREENED BY THE PRESSURE OF LAND, WITH ENDLESS SCREW CONVEYOR FOR WASTE LAND.
SHIELD DIGGING IN PARTICULAR FOR DIGGING WITH A FRONT SLAUGHTER SCREENED BY THE PRESSURE OF LAND, WITH ENDLESS SCREW CONVEYOR FOR WASTE LAND.
Land drainage system consists of a worm (18) which discharges the land as a sludge from the working space (11) of the driving shield (1). It further comprises a replacement of conveyor (33) consisting preferably in the form of a chain scraper conveyor, a conveyor belt or the like, used when the evacuation of the land is not necessary using the worm (18) and especially when it comes to land occurring in clumps. Replacing conveyor (33) can be displaced inside the shield. If necessary, it can be introduced into the working space (11) with its charging end through an opening in the partition wall (10).
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