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Numerical modelling on short delay blast-induced fragmentation and vibration
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.ORCID-id: 0000-0002-5872-5173
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.ORCID-id: 0000-0002-5165-4229
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.
2018 (engelsk)Inngår i: Blasting and Fragmentation, ISSN 1937-6359, Vol. 12, nr 2, s. 105-116Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Blasting operations can fragment rock mass into smaller pieces and meanwhile induce vibration anddamage in remaining rock mass. A series of small-scale laboratory tests were carried out to investigatethe effects of short delay times on fragmentation. These tests were modeled using a coupledFEM-BPM-PBM model in the LS-DYNA code. In the model, the remaining rock is representedby a finite element model (FEM) and the rock to be blasted is represented by a bonded particlemodel (BPM). The detonation of explosives is described with a particle blast method (PBM). Thefragment size distribution was obtained with a code developed in Perl programming language. Theblast-induced vibration and damage in the remaining rock mass were evaluated. The results showthat the coupled FEM-BPM-PBM model can be employed to evaluate both fragmentation in theblasted domain and the blast-induced damage and vibration in the remaining rock mass.

sted, utgiver, år, opplag, sider
Cleveland: International Society of Explosives Engineers , 2018. Vol. 12, nr 2, s. 105-116
Emneord [en]
blasting, short delay, fragmentation, vibration, numerical modelling
HSV kategori
Forskningsprogram
Gruv- och berganläggningsteknik; Centrumbildning - Kompetenscentrum för sprängteknik (SWEBREC)
Identifikatorer
URN: urn:nbn:se:ltu:diva-73819OAI: oai:DiVA.org:ltu-73819DiVA, id: diva2:1313206
Merknad

Validerad;2019;Nivå 1;2019-07-05 (johcin)

Tilgjengelig fra: 2019-05-02 Laget: 2019-05-02 Sist oppdatert: 2019-07-05bibliografisk kontrollert

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Yi, ChangpingJohansson, DanielNyberg, Ulf

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