| 摘要 |
A rock bolt assembly which includes a rock bolt with an elongale body which extends between a distal end and a proximal end, a tubular sleeve which sleeve longitudinally extends between a first end and a second end, on the cock bolt such that proximal and distal ends of the bolt project from the first and second ends respective of the sleeve, a load bearing barrel which is centrally bored to engage the rock bolt between the first end of the sleeve and the proximal end of the belt, which barrel is adapted at a forward end is engage with the second end of the sleeve in sealing contact, and which barrel has at least one grout conduit between an exterior surface of the barrel and the bore, which at least one conduit defines a part of a grout passage which communicates the exterior surface of the barrel with an interior of the sleeve, when the barrel is engaged with the sleeve, and a seal which seals She grout passage to grout outflow but accommodates inflow of grout from a source, |
