The effect of rock mass confinement on the bond strength of fully grouted cable bolts

Hyett, A. J.; Bawden, W.F.; Reichert, R.D.

doi:10.1016/0148-9062(92)92634-o

Cited by 174 publications

(69 citation statements)

References 3 publications

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“…Cablebolt capacity is mobilized under tensile load (Hyett et al 1992;Kaiser et al 1992;Maloney et al 1992). The development of tensile load is possible for cablebolts orientated in a downward fan, as illustrated schematically in Fig.…”

Section: Influence Of Hanging-wall Cablebolting On Overbreakmentioning

confidence: 99%

Assessment and Control of Ore Dilution in Long Hole Mining: Case Studies

Henning¹,

Mitri

2008

Geotech Geol Eng

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Unplanned ore dilution has a direct and large influence on the cost of a stope, and ultimately on the profitability of a mining operation. This paper presents the results of an examination of factors influencing ore dilution in a blasthole stoping environment. For the study, a comprehensive database was established, incorporating information related to the design, construction, excavation and cavity surveys of 172 sequentially mined long hole stope case histories from two orezones. Through a review of the case studies, it was demonstrated that, in addition to stope dimension, the amount of unplanned dilution differed according to stope type. Five stope types were identified, based on their position within a tabular blasthole mining sequence. Measured overbreak varies with stope type, with secondary stopes generating a greater volume of hanging-wall dilution than do primary stopes. Furthermore, a case study is presented to demonstrate the role cablebolts installed in the stope hanging-wall play to control ore dilution. The study illustrates relationships between measured hangingwall overbreak, cablebolt orientation and stope type.

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Section: Influence Of Hanging-wall Cablebolting On Overbreakmentioning

confidence: 99%

Assessment and Control of Ore Dilution in Long Hole Mining: Case Studies

Henning¹,

Mitri

2008

Geotech Geol Eng

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“…A considerable volume of literature on laboratory cable bond tests is available [9][10][11][12][13][14][15][16][17] which has facilitated the realization of bond failure mechanism and modelling of it. Yazici Previous research has established that the bond strength of fully grouted cable bolts may be regarded as frictional rather than adhesional in nature.…”

Section: Modelling Bond Failure Mechanism For Fully Grouted Cable Boltsmentioning

confidence: 99%

A model for cable bolt-rock mass interaction: Integration with discontinuous deformation analysis (DDA) algorithm

Moosavi

Grayeli

2006

International Journal of Rock Mechanics and Mining Sciences

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“…It has been reported that the control of the radial confinement of a reinforcement element is very important to link the laboratory test and field as steel pipe and the soil ground (e.g., Hyett et al, 1992). They have explained this point in detail and proposed the modified test equipment in consideration of confined conditions.…”

Section: Test Methodologymentioning

confidence: 99%

“…Hyett et al (1992) reported from comparison tests between confining mediums that bond strength does not increase after drop when confined condition was not activated. Therefore, the optimization of the geometry of a dimple, as enough length to depth of dimple has been secured in the developed new dimpled pipes, is very important to improve bond strength by utilizing the confined effect.…”

Section: Direction Of the Pull-out Testmentioning

confidence: 99%