Genetic Full Waveform Inversion to Characterise Fractures

Fuggi, Antonio; Hildyard, MW; Hooper, Andrew; Clark, Roger A.; Brittan, John

doi:10.3997/2214-4609.201901005

Cited by 1 publication

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Stope advance, Mohr–Coulomb failure on faults, and the opening and closure of joints and stopes, are supported. Recent developments include equivalent media representations of fracture zones [62], and seismic full-waveform inversion of fractures [63].…”

Section: Methodsmentioning

confidence: 99%

Complexities of underground mining seismic sources

Linzer

Hildyard

Wesseloo

2021

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

This paper presents a numerical investigation on the influence of the mining environment on seismic sources, with a focus on pillar failure mechanisms in tabular mining. We investigate the influence of the mining stope (underground excavation or void) on seismic inversions for the scalar moment, corner frequency, source radius, stress drop and moment tensor using synthetic events created within elastodynamic numerical modelling software, WAVE3D. The main objective is to determine whether the source parameters calculated from the recorded waveforms are due to a combination of the stope source and the pillar sources, rather than being related only to crushing of the pillar or shearing in the pillar footwall. The main finding is that the presence of stopes, and types of pillars, have a significant impact on the seismic moment and other source parameters. This is important since the moment is viewed as a robust parameter on which seismic magnitude is often based; however, this study indicates that moments calculated for pillar failure in a tabular stoping environments are less representative of the shearing or crushing source than originally thought. This article is part of the theme issue ‘Fracture dynamics of solid materials: from particles to the globe’.

show abstract

Section: Methodsmentioning

confidence: 99%