RR241 - Rock reinforcement and testing
Fully encapsulated tendons and rockbolts provide safe and
effective reinforcement for the relatively deep coal mines in weak
strata generally worked in Europe. However, once a fully grouted
tendon/rockbolt has been installed, there is no way of determining
whether it remains intact. Reinforced roadways also suffer the risk
of deterioration over time and gate roadway stability can be
jeopardised in the area of enhanced stress ahead of the
retreating/advancing face. If rockbolting is going to fulfil its
potential for transforming European coal mining, appropriate
instrumentation and strategies need to be developed to overcome
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