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Discrete Element Modelling of Blast Fragmentation of a Mortar Cylinder
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
2015 (engelsk)Konferansepaper, Oral presentation only (Fagfellevurdert)
Abstract [en]

Blasting techniques are widely used to fragment rock masses into smaller pieces. Numerical modelling is an efficient method employed by many researchers in the blasting field. It is difficult for a conventional continuum-based approach such as the finite element method (FEM) to model the rock fragmentation by blasting and the expansion work on the rock by explosive and its detonation products. In this paper, the particle blast method (PBM) was employed to model the behaviour of the detonation and a bonded particle model (BPM) was used to model the brittle material to be blasted. A mortar cylinder with a centrally placed hole for the explosive was modelled and the results were compared to the experimental data. The blast process from crack initiation to fragment formation was analysed. The influence of coupling ratio on fragmentation was also investigated.

sted, utgiver, år, opplag, sider
2015.
HSV kategori
Forskningsprogram
Gruv- och Berganläggningsteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-31916Lokal ID: 63d90628-4eb9-4894-8ace-96a7d5e48a18OAI: oai:DiVA.org:ltu-31916DiVA, id: diva2:1005150
Konferanse
International Symposium on Rock Fragmentation by Blasting : 24/08/2015 - 25/08/2015
Merknad
Godkänd; 2015; 20150901 (chayir)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2018-04-17bibliografisk kontrollert

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Yi, ChangpingJohansson, Daniel

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