Page 468 - Rock Mechanics For Underground Mining

LONGWALL AND CAVING MINING METHODS

Figure 15.18 Roadway support and
reinforcement, Angus Place Colliery,
Western Coal Field, New South
Wales, Australia; (a) typical reinforce-
ment pattern, (b) detail showing bolt
heads, mesh and straps (after Hebble-
white, 2001).

development and production (Frith, 2000). In Australia, the pre-tensioning of roof
bolts and cables has been found to allow roof bolting densities to be reduced and
roadway development rates to be improved, especially when used in conjunction
with full column grouting (Fuller, 1999).
Obviously, the design of the roof and rib support and reinforcement system will
depend on the layout geometry, the geomechanical characteristics of the strata and
the in situ and induced stresses. It has also been found that some types of reinforcing

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