Optimization of Flyrock and Ground Vibrations in Blast Design: A Case Study from the Balangero Mine in Italy.
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| Title: | Optimization of Flyrock and Ground Vibrations in Blast Design: A Case Study from the Balangero Mine in Italy. |
|---|---|
| Authors: | Lombardo, Matteo Iacopo1 (AUTHOR) matteo.lombardo6@studio.unibo.it, D'alio, Sebastiano1 (AUTHOR) sebastiano.dalio@studio.unibo.it |
| Source: | Mining Revue / Revista Minelor. 2026 Supplement 1, Vol. 32 Issue 1, p19-26. 8p. |
| Subject Terms: | *Blasting, *Explosives, *Mines & mineral resources, *Soil vibration |
| Geographic Terms: | Italy, Piedmont (Italy) |
| Abstract: | This study investigates the optimization of flyrock and blast-induced ground vibrations in open-pit blasting operations through numerical simulation using O-Pitblast software. The reference site is the Balangero mine, located in the Lanzo Valleys (Piedmont, Italy), historically one of the most significant European deposits of serpentinite and asbestiform fibers. The explosive configuration consists of CHE-ANFO EXTRA cartridges (90x500 mm) as column charge, APB 1350 pentolite boosters, and Rock Star 25/50 delay detonators in compliance with Italian regulations prohibiting the use of bulk explosives. Three rectangular blast patterns were evaluated by varying hole spacing and number of holes per row, keeping constant the number of rows, the burden, and inter-hole (75 ms) and inter-row (1 s) delays, while varying spacing and the number of holes per row. Ground vibrations were assessed through an attenuation law with the following parameters: k = 1500, α = 0.6, β = −1.2, (90% confidence level), without exceeding the Peak Particle Velocity (PPV) threshold of 15 mm/s at any surrounding structures. Flyrock clearance zones remained within 24 m for personnel and 16 m for equipment, well below regulatory limits. The result of this study highlights that detonation timing, particularly inter-row delay, is the critical variable in simultaneously controlling flyrock projection and seismic wave propagation. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 197635909 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Optimization of Flyrock and Ground Vibrations in Blast Design: A Case Study from the Balangero Mine in Italy. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lombardo%2C+Matteo+Iacopo%22">Lombardo, Matteo Iacopo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> matteo.lombardo6@studio.unibo.it</i><br /><searchLink fieldCode="AR" term="%22D'alio%2C+Sebastiano%22">D'alio, Sebastiano</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> sebastiano.dalio@studio.unibo.it</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Mining+Revue+%2F+Revista+Minelor%22">Mining Revue / Revista Minelor</searchLink>. 2026 Supplement 1, Vol. 32 Issue 1, p19-26. 8p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Blasting%22">Blasting</searchLink><br />*<searchLink fieldCode="DE" term="%22Explosives%22">Explosives</searchLink><br />*<searchLink fieldCode="DE" term="%22Mines+%26+mineral+resources%22">Mines & mineral resources</searchLink><br />*<searchLink fieldCode="DE" term="%22Soil+vibration%22">Soil vibration</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Italy%22">Italy</searchLink><br /><searchLink fieldCode="DE" term="%22Piedmont+%28Italy%29%22">Piedmont (Italy)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study investigates the optimization of flyrock and blast-induced ground vibrations in open-pit blasting operations through numerical simulation using O-Pitblast software. The reference site is the Balangero mine, located in the Lanzo Valleys (Piedmont, Italy), historically one of the most significant European deposits of serpentinite and asbestiform fibers. The explosive configuration consists of CHE-ANFO EXTRA cartridges (90x500 mm) as column charge, APB 1350 pentolite boosters, and Rock Star 25/50 delay detonators in compliance with Italian regulations prohibiting the use of bulk explosives. Three rectangular blast patterns were evaluated by varying hole spacing and number of holes per row, keeping constant the number of rows, the burden, and inter-hole (75 ms) and inter-row (1 s) delays, while varying spacing and the number of holes per row. Ground vibrations were assessed through an attenuation law with the following parameters: k = 1500, α = 0.6, β = −1.2, (90% confidence level), without exceeding the Peak Particle Velocity (PPV) threshold of 15 mm/s at any surrounding structures. Flyrock clearance zones remained within 24 m for personnel and 16 m for equipment, well below regulatory limits. The result of this study highlights that detonation timing, particularly inter-row delay, is the critical variable in simultaneously controlling flyrock projection and seismic wave propagation. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=197635909 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.2478/minrv-2026-0023 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 19 Subjects: – SubjectFull: Blasting Type: general – SubjectFull: Explosives Type: general – SubjectFull: Mines & mineral resources Type: general – SubjectFull: Soil vibration Type: general – SubjectFull: Italy Type: general – SubjectFull: Piedmont (Italy) Type: general Titles: – TitleFull: Optimization of Flyrock and Ground Vibrations in Blast Design: A Case Study from the Balangero Mine in Italy. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lombardo, Matteo Iacopo – PersonEntity: Name: NameFull: D'alio, Sebastiano IsPartOfRelationships: – BibEntity: Dates: – D: 02 M: 09 Text: 2026 Supplement 1 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 12202053 Numbering: – Type: volume Value: 32 – Type: issue Value: 1 Titles: – TitleFull: Mining Revue / Revista Minelor Type: main |
| ResultId | 1 |
