Properties of Large-scale Geological Features and Seismic Responses Affecting Strainburst Potential in Deep Underground Mines

Audrey Goulet, Martin Grenon, Philippe Morissette, Kyle Woodward, Johan Wesseloo

Research output: Chapter in Book/Conference paperConference paper

Abstract

Strainburst refers to local small seismic events generating shallow spalling with violent ejection of fragments in an active development heading. This rockburst category may affect worker safety and mine productivity. This paper conducts a preliminary study investigating properties of large-scale geological features, mine operational context, and both aseismic and seismic responses generating strainbursts. Using the LaRonde mine as a case study, key parameters influencing strainburst occurrence and severity are defined and highlighted. The distance to a lithological contact and the orientation of the drift are parameters that affect strainburst potential and severity at LaRonde. The analysed bursts were seismically triggered or self-initiated. The analysed seismic events generating strainbursts had a local magnitude of-0.7 ± 0.5 on average and were located between 3 and 58 meters from the damage. Finally, strainbursts mostly occur within five days after a development blast.
Original languageEnglish
Title of host publicationISRM International Symposium - 10th Asian Rock Mechanics Symposium, 29 October - 3 November, Singapore
Place of PublicationSingapore
PublisherInternational Society for Rock Mechanics and Rock Engineering
Number of pages12
ISBN (Electronic)978-981-11-9003-2
Publication statusPublished - Nov 2018
Event10th Asian Rock Mechanics Symposium: The ISRM International Symposium for 2018 - Singapore, Singapore, Singapore
Duration: 29 Oct 20183 Nov 2018

Conference

Conference10th Asian Rock Mechanics Symposium
CountrySingapore
CitySingapore
Period29/10/183/11/18

Fingerprint Dive into the research topics of 'Properties of Large-scale Geological Features and Seismic Responses Affecting Strainburst Potential in Deep Underground Mines'. Together they form a unique fingerprint.

Cite this