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Rockburst in underground excavations: A review of mechanism, classification, and prediction methods

Askaripour Mahdi, Saeidi Ali, Rouleau Alain et Mercier-Langevin Patrick. (2022). Rockburst in underground excavations: A review of mechanism, classification, and prediction methods. Underground Space,

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URL officielle: http://dx.doi.org/doi:10.1016/j.undsp.2021.11.008

Résumé

Technical challenges have always been part of underground mining activities, however, some of these challenges grow in complexity as mining occurs in deeper and deeper settings. One such challenge is rock mass stability and the risk of rockburst events. To overcome these challenges, and to limit the risks and impacts of events such as rockbursts, advanced solutions must be developed and best practices implemented. Rockbursts are common in underground mines and substantially threaten the safety of personnel and equipment, and can cause major disruptions in mine development and operations. Rockbursts consist of violent wall rock failures associated with high energy rock projections in response to the instantaneous stress release in rock mass under high strain conditions. Therefore, it is necessary to develop a good understanding of the conditions and mechanisms leading to a rockburst, and to improve risk assessment methods. The capacity to properly estimate the risks of rockburst occurrence is essential in underground operations. However, a limited number of studies have examined and compared yet different empirical methods of rockburst. The current understanding of this important hazard in the mining industry is summarized in this paper to provide the necessary perspective or tools to best assess the risks of rockburst occurrence in deep mines. The various classifications of rockbursts and their mechanisms are discussed. The paper also reviews the current empirical methods of rockburst prediction, which are mostly dependent on geomechanical parameters of the rock such as uniaxial compressive strength of the rock, as well as its tensile strength and elasticity modulus. At the end of this paper, some current achievements and limitations of empirical methods are discussed.

Type de document:Article publié dans une revue avec comité d'évaluation
Version évaluée par les pairs:Oui
Date:10 Janvier 2022
Sujets:Sciences naturelles et génie > Génie
Sciences naturelles et génie > Génie > Génie minier et génie géologique
Sciences naturelles et génie > Sciences appliquées
Sciences naturelles et génie > Sciences naturelles > Sciences de la terre (géologie, géographie)
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Unités de recherche > Chaire de recherche du Canada en prévision et prévention des risques liés aux aléas hydro-géotechniques (P2GeoRISQUE)
Mots-clés:rockburst, empirical methods, underground instability, rockburst prediction methods, méthodes empiriques, instabilité souterraine, méthodes de prévision des coups de toit, éclatement de roche
Déposé le:15 mars 2022 23:51
Dernière modification:15 mars 2022 23:51
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