Underground gallery or tunnel lining sprayed concrete appliance - has sliding plate on feed duct movably edging into form space against concrete end

摘要

The system is used for cladding a tunnel with sprayed concrete. A supply lead, or more than one, is directed towards the open shuttering space between walling and formwork, and swivels peripherally so as to widen its effective area. The lead (5) is fitted with at least one distributor or pressure element (sliding plate 14) lying against the open end (13) of the inserted cladding material (4). This edges onto the shuttering space, with room for movement, over a peripheral section (a) of this space, and is movable in the peripheral direction of the excavation walling. It can be prestressed towards the inserted material, and fitted with a vibrator.