Rockbolt assembly

A device for securing a rockbolt within a borehole, the rockbolt having a threaded free end and a second end associated with an anchor, the device comprising:

• a tube assembly having open first and second ends, an internal threaded portion adapted to engage the rockbolt free end, and an internal passage, including at least one channel traversing the threaded portion, extending between the ends of the tube assembly to define a continuous material passage from the first end out the second end;
• the tube assembly including first and second tubes that are sealingly and adhesively interconnected;
• and
• a nut configured to engage the first end of the tube assembly such that actuation of the nut relative to the tube assembly tensions the rockbolt which causes engagement of the anchor.

A device for securing a rockbolt within a borehole, the rockbolt having a threaded free end and a second end associated with an anchor, the device comprising:

• a first tube having open first and second ends, an internal threaded portion adapted to engage the rockbolt free end, and an internal first passage, including at least one channel traversing the threaded portion, extending between the first and second ends;
• a second tube positionable about the rockbolt and having open third and fourth ends with an internal second passage extending therebetween;
• the first tube second end sealingly engaging the second tube third end with the first and second passages aligned such that a continuous material passage is defined from the first tube first end out the second tube fourth end;
• and
• a nut configured to engage the first tube first end such that actuation of the nut relative to the first tube tensions the rockbolt which causes engagement of the anchor.