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Effects of in-situ stresses on the fracturing of rock by blasting
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. Swedish Blasting Research Centre, Luleå University of Technology, Sweden.ORCID iD: 0000-0002-5872-5173
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. Swedish Blasting Research Centre, Luleå University of Technology, Sweden.ORCID iD: 0000-0002-5165-4229
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-2306-9241
2018 (English)In: Computers and geotechnics, ISSN 0266-352X, E-ISSN 1873-7633, Vol. 104, p. 321-330Article in journal (Refereed) Published
Abstract [en]

Blasting is widely applied in deep rock excavation. The effect of in-situ stresses on the fracturing of rock due to blasting was investigated. A theoretical model was used to explain the effect mechanism of in-situ stresses on crack propagation due to blasting. Four cases with different in-situ stress conditions were numerically investigated. The numerical results indicate that the crack propagation is governed by the blast load in the vicinity of the blasthole while the high in-situ stresses can influence the crack propagation in the far-field. The crack propagation trends towards the direction in which the high initial pressure is applied.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 104, p. 321-330
Keywords [en]
Blasting, In-situ stresses, Crack propagation
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-67060DOI: 10.1016/j.compgeo.2017.12.004ISI: 000449125200029Scopus ID: 2-s2.0-85038407140OAI: oai:DiVA.org:ltu-67060DiVA, id: diva2:1167743
Note

Validerad;2018;Nivå 2;2018-11-19 (johcin)

Available from: 2017-12-19 Created: 2017-12-19 Last updated: 2018-11-19Bibliographically approved

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CiteExportLink to record
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