E - Fixed Constructions – 21 – F
Patent
E - Fixed Constructions
21
F
E21F 17/00 (2006.01) E21D 11/00 (2006.01) E21D 19/00 (2006.01) E21F 1/14 (2006.01)
Patent
CA 2325177
A stopping for sealing off a mine area utilises bolts fixed in the floor, ribs and roof of the mine roadway (Figure 7) to create an array of intersecting cables (Figure 4) across the site to be sealed. The cables are tightened by tensioners (Figure 6). A layer of mesh (Figure 6) about the size of shade cloth is secured to one face of the cable array with clips (Figure 6) and overlaps the periphery to allow contact with the rock face. A water-based latex is applied to one or both faces of the mesh in order to make the mesh impervious to air. The stopping remains flexible and withstands vehicle impacts and pressure peaks caused by blasting. Resealable apertures al low the passage of personnel and service conduits (Figure 11 ) are provided.
Rohl Kevin Gary
Truloff Raymond Gordon
Cervetto Courtice Solicitors
Gowling Lafleur Henderson Llp
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