Roofex™ — a new flexible rockbolting concept

Neugebauer, Erich

doi:10.36487/acg_repo/902_05

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2012

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“…The increased demand for minerals over the past few years has driven mine development to deeper levels and into areas which have previously been considered inaccessible and unstable. At the same time tunnelling for road and rail and energy expands into more sensitive areas as the need for further infrastructure extension continues [1].…”

Section: Introductionmentioning

confidence: 99%

A New Yielding Bolt for Rock Support in High Stress Rock Masses

Wang

Jiang

2012

AMM

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High stress in the surrounding rock mass causes serious stability problems. The applied support system used in this conduction should be able to carry high loads and also accommodate large deformations without experiencing serious damage. In this paper, a brief overview of the history of yielding/energy-absorbing rock bolts is provided. And then, a new yielding bolt invented by the author is introduced in detail, including its layout and principle. Theoretical analysis shows that the bolt has large load-bearing and deformation capacities, thereby absorbing a large amount of energy to maintain the stability of surrounding rock.

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Section: Introductionmentioning

confidence: 99%