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Discrete Element Modelling of Blast Fragmentation of a Mortar Cylinder
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-5872-5173
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-5165-4229
2015 (English)Conference paper, Oral presentation only (Refereed)
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.

Place, publisher, year, edition, pages
2015.
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-31916Local ID: 63d90628-4eb9-4894-8ace-96a7d5e48a18OAI: oai:DiVA.org:ltu-31916DiVA, id: diva2:1005150
Conference
International Symposium on Rock Fragmentation by Blasting : 24/08/2015 - 25/08/2015
Note
Godkänd; 2015; 20150901 (chayir)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-04-17Bibliographically approved

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Yi, ChangpingJohansson, Daniel

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