TUBBING Russian patent published in 2001 - IPC

FIELD: underground mine working supports, particularly, tubbing; applicable in tunnel lining. SUBSTANCE: tubbing segments are made of cast iron or steel and set of rings comprising the tubbing presenting a sequence of rings of two types strictly alternating with each other. The first type is formed of cylindrical segments whose end flanges having two inlet/outlet channels each made in the form of branches of shaped channels and directed to internal surface of cylindrical segments. Shaped channels on end flanges are located with displacement relative to shaped channels on side flanges. The second type of rings is formed of cylindrical segments on whose perimeter, communicating channels are located and each end flange has one inlet/outlet channel made in the form of branched shaped channels and directed to internal surface of segments. Shaped channels form internal system of channels filled with solidifying mass in the form of composite compound based on silicon resin. Inlet/outlet channels form unit on internal surface of cylindrical segments. Unit is made in the form of bayonet lock for connection with device for forcing under pressure of solidifying mass to system of channels. EFFECT: higher waterproofness of tubbing due to reliable sealing of joints between tubbing blocks and tubbing rings at high seismic activity of mine working region. 4 cl, 3 dwg