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Effects of in-situ stresses on the fracturing of rock by blasting
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi. Swedish Blasting Research Centre, Luleå University of Technology, Sweden.ORCID-id: 0000-0002-5872-5173
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi. Swedish Blasting Research Centre, Luleå University of Technology, Sweden.ORCID-id: 0000-0002-5165-4229
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.ORCID-id: 0000-0002-2306-9241
2018 (engelsk)Inngår i: Computers and geotechnics, ISSN 0266-352X, E-ISSN 1873-7633, Vol. 104, s. 321-330Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
Elsevier, 2018. Vol. 104, s. 321-330
Emneord [en]
Blasting, In-situ stresses, Crack propagation
HSV kategori
Forskningsprogram
Gruv- och berganläggningsteknik; Centrumbildning - Kompetenscentrum för sprängteknik (SWEBREC)
Identifikatorer
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
Merknad

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

Tilgjengelig fra: 2017-12-19 Laget: 2017-12-19 Sist oppdatert: 2019-03-26bibliografisk kontrollert

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