Effect of blast vibrations on the stability of cemented rockfill

Muhammad Zaka Emad; Hani S. Mitri; John G. Henning

doi:10.1080/17480930.2012.707527

Effect of blast vibrations on the stability of cemented rockfill

Muhammad Zaka Emad, Hani S. Mitri, John G. Henning

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Blast vibrations are considered among the primary factors in destabilising cemented rockfill (CRF) stopes in open stoping systems with delayed backfill. This destabilisation occurs when the backfill face is subjected to blasting of an adjacent stope. Inadequate cementation, backfilling practices and blasting of adjacent stopes can be the causes of CRF failure and hence ore dilution. Poor blasting practices can cause greater blast vibrations and therefore can initiate fill failure. The magnitude of blast vibrations can be controlled by the powder factor and blast design. This study presents the effects of blast vibrations on CRF backfilled stopes. The effect of different blast loads and profiles are examined. Blast loads corresponding to non-ideal blasting are also simulated.

Original language	English
Pages (from-to)	233-243
Number of pages	11
Journal	International Journal of Mining, Reclamation and Environment
Volume	26
Issue number	3
DOIs	https://doi.org/10.1080/17480930.2012.707527
State	Published - Sep 2012
Externally published	Yes

Keywords

blast vibrations
dilution
dynamic loading
open stoping
rockfill

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Geology
Earth-Surface Processes
Management of Technology and Innovation

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10.1080/17480930.2012.707527

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abstract = "Blast vibrations are considered among the primary factors in destabilising cemented rockfill (CRF) stopes in open stoping systems with delayed backfill. This destabilisation occurs when the backfill face is subjected to blasting of an adjacent stope. Inadequate cementation, backfilling practices and blasting of adjacent stopes can be the causes of CRF failure and hence ore dilution. Poor blasting practices can cause greater blast vibrations and therefore can initiate fill failure. The magnitude of blast vibrations can be controlled by the powder factor and blast design. This study presents the effects of blast vibrations on CRF backfilled stopes. The effect of different blast loads and profiles are examined. Blast loads corresponding to non-ideal blasting are also simulated.",

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AU - Mitri, Hani S.

AU - Henning, John G.

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AB - Blast vibrations are considered among the primary factors in destabilising cemented rockfill (CRF) stopes in open stoping systems with delayed backfill. This destabilisation occurs when the backfill face is subjected to blasting of an adjacent stope. Inadequate cementation, backfilling practices and blasting of adjacent stopes can be the causes of CRF failure and hence ore dilution. Poor blasting practices can cause greater blast vibrations and therefore can initiate fill failure. The magnitude of blast vibrations can be controlled by the powder factor and blast design. This study presents the effects of blast vibrations on CRF backfilled stopes. The effect of different blast loads and profiles are examined. Blast loads corresponding to non-ideal blasting are also simulated.

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Effect of blast vibrations on the stability of cemented rockfill

Abstract

Keywords

ASJC Scopus subject areas

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