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Numerical modeling for a simulated rockburst experiment using LS-DYNA
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: 0000-0002-9766-0106
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.ORCID-id: 0000-0002-9278-1283
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.ORCID-id: 0009-0003-2166-7613
Vise andre og tillknytning
2021 (engelsk)Inngår i: Underground Space, ISSN 2096-2754, E-ISSN 2467-9674, Vol. 6, nr 2, s. 153-162Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Ground support systems are commonly used to mitigate the potential consequences of rockburst in burst prone mines. To assess the capacity of ground support systems when subjected to dynamic loading, simulated rockburst tests using blasting were conducted at the Kiruna Mine. In this study, a numerical simulation for one of the field tests was conducted using the LS-DYNA code to investigate the dynamic response of the ground support systems including shotcrete and rockbolts. The numerical results showed a similar particle vibration pattern and a crack pattern to those of the field measurements. The effects of the detonator position and the charge configuration on the dynamic response of ground support systems are also discussed. Numerical results indicated that the peak particle vibrations on the tested panel increase along the direction of detonation propagation. It is difficult to use different charge concentrations in one borehole to investigate the effect of different dynamic loads on the dynamic response of support systems. Numerical results also indicated that 2D numerical modeling for simulated rockburst experiments could overestimate the dynamic response of ground support systems.

sted, utgiver, år, opplag, sider
Elsevier, 2021. Vol. 6, nr 2, s. 153-162
Emneord [en]
Simulated rockburst experiments, Ground support systems, Numerical modeling
HSV kategori
Forskningsprogram
Gruv- och berganläggningsteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-77828DOI: 10.1016/j.undsp.2019.11.002ISI: 000638260300005Scopus ID: 2-s2.0-85084697682OAI: oai:DiVA.org:ltu-77828DiVA, id: diva2:1395689
Forskningsfinansiär
VinnovaSwedish Research Council FormasSwedish Energy AgencyLuleå University of TechnologyEU, Horizon 2020, 730294
Merknad

Validerad;2021;Nivå 2;2021-04-13 (alebob)

Tilgjengelig fra: 2020-02-24 Laget: 2020-02-24 Sist oppdatert: 2025-12-15bibliografisk kontrollert

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Yi, ChangpingNordlund, ErlingZhang, PingWarema, SenziaShirzadegan, Shahin

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