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06.12.2023 | Original Paper

Micro-Fracturing in Granitic Rocks During Uniaxial Loading: The Role of Grain Size Heterogeneity

verfasst von: Matěj Petružálek, Z. Jechumtálová, T. Lokajíček, P. Kolář, J. Šílený

Erschienen in: Rock Mechanics and Rock Engineering

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Abstract

Laboratory loading experiments, in general, are used to estimate the mechanical properties of rocks. The application of acoustic emission (AE), a proxy for very small-scale earthquakes, offers insights into rock fracturing, especially when advanced seismological methods are applied. The uniaxial compressive test, the most conventional test within the scope of laboratory rock mechanics, estimates strength, elastic constants, or microcracking thresholds. Obviously, rock structure and grain size heterogeneity are the crucial parameters controlling these mechanical properties. Here, four granites with a different structure were uniaxially loaded, while AE was monitored, in order to observe the manner of fracturing. AE data were utilized at three different quality levels (AE recognition; AE localization; and the AE source mechanism). However, our focus was to study AE source mechanisms via the application of a shear-tensile crack source model. During a uniaxial compressive test, common (structurally independent) AE features led to the general characterization of microfracturing. On the other hand, sample related differences in AE results are discussed with respect to the role of granite heterogeneity. The comprehensiveness of the AE application demonstrated the validity of various levels of AE experiments.

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Literatur
Zurück zum Zitat Fjaer E, Holt RM, Horsrud P, Raaen AM (2008) Petroleum related rock mechanics. Elsevier, Amsterdam Fjaer E, Holt RM, Horsrud P, Raaen AM (2008) Petroleum related rock mechanics. Elsevier, Amsterdam
Zurück zum Zitat Gramberg J (1989) A non-conventional view on rock mechanics fracture mechanics. Balkema, Rotterdam, p 250 Gramberg J (1989) A non-conventional view on rock mechanics fracture mechanics. Balkema, Rotterdam, p 250
Zurück zum Zitat Lokajíček T, Vasin R, Svitek T, Petružálek M, Kotrlý M, Turková I, Wenk HR (2021) Intrinsic elastic anisotropy of Westerly granite observed by ultrasound measurements, microstructural investigations, neutron diffraction. J Geophys Res 126(1):e2020JB020878. https://doi.org/10.1029/2020JB020878CrossRef Lokajíček T, Vasin R, Svitek T, Petružálek M, Kotrlý M, Turková I, Wenk HR (2021) Intrinsic elastic anisotropy of Westerly granite observed by ultrasound measurements, microstructural investigations, neutron diffraction. J Geophys Res 126(1):e2020JB020878. https://​doi.​org/​10.​1029/​2020JB020878CrossRef
Zurück zum Zitat Martin CD (1993) The strength of massive Lac du Bonnet granite around underground opening. PhD thesis, University of Manitoba Martin CD (1993) The strength of massive Lac du Bonnet granite around underground opening. PhD thesis, University of Manitoba
Zurück zum Zitat Petružálek M, Vilhelm J, Lokajíček T, Rudajev V (2007) Assessment of P-wave anisotropy by means of velocity elipsoid. Acta Geodyn Geomater 4(3147):23–31 Petružálek M, Vilhelm J, Lokajíček T, Rudajev V (2007) Assessment of P-wave anisotropy by means of velocity elipsoid. Acta Geodyn Geomater 4(3147):23–31
Zurück zum Zitat Petruzalek M, Lokajicek T, Svitek T (2017) Ultrasonic method for estimation of crack initiation stress. In: 51st US rock mechanics/geomechanics symposium, OnePetro Petruzalek M, Lokajicek T, Svitek T (2017) Ultrasonic method for estimation of crack initiation stress. In: 51st US rock mechanics/geomechanics symposium, OnePetro
Zurück zum Zitat Rao MVMS, Lakshmi KP (2005) Analysis of b-value improved b-value of acoustic emissions accompanying rock fracture. Curr Sci 89(9):1577–1582 Rao MVMS, Lakshmi KP (2005) Analysis of b-value improved b-value of acoustic emissions accompanying rock fracture. Curr Sci 89(9):1577–1582
Zurück zum Zitat Rao MVMS, Lakshmi KP, Rao GN, Vijayakumar K, Udayakumar S (2011) Precursory microcracking brittle failure of Latur basal t migmatite gneiss under compressive loading. Curr Sci 101(8):1053–1059 Rao MVMS, Lakshmi KP, Rao GN, Vijayakumar K, Udayakumar S (2011) Precursory microcracking brittle failure of Latur basal t migmatite gneiss under compressive loading. Curr Sci 101(8):1053–1059
Zurück zum Zitat Shiotani T (1994) Evaluation of progressive failure using AE sources improved b-value on slope model tests. Progr Acoust Emiss 7:529–534 Shiotani T (1994) Evaluation of progressive failure using AE sources improved b-value on slope model tests. Progr Acoust Emiss 7:529–534
Zurück zum Zitat Stierle E, Vavryčuk V, Kwiatek G, Charalampidou EM, Bohnhoff M (2016) Seismic moment tensors of acoustic emissions recorded during laboratory rock deformation experiments: sensitivity to attenuation anisotropy. Geophys Suppl Mon Not R Astron Soc 205(1):38–50. https://doi.org/10.1093/gji/ggw009CrossRef Stierle E, Vavryčuk V, Kwiatek G, Charalampidou EM, Bohnhoff M (2016) Seismic moment tensors of acoustic emissions recorded during laboratory rock deformation experiments: sensitivity to attenuation anisotropy. Geophys Suppl Mon Not R Astron Soc 205(1):38–50. https://​doi.​org/​10.​1093/​gji/​ggw009CrossRef
Zurück zum Zitat Vavryčuk V, Petružálek M, Lokajíček L, Aminzadeh A (2023) Bi-modular properties of sandstone inferred from seismic moment tensors of acoustic emissions. Int J Rock Mech Min Sci 171:105576 (under review)CrossRef Vavryčuk V, Petružálek M, Lokajíček L, Aminzadeh A (2023) Bi-modular properties of sandstone inferred from seismic moment tensors of acoustic emissions. Int J Rock Mech Min Sci 171:105576 (under review)CrossRef
Metadaten
Titel
Micro-Fracturing in Granitic Rocks During Uniaxial Loading: The Role of Grain Size Heterogeneity
verfasst von
Matěj Petružálek
Z. Jechumtálová
T. Lokajíček
P. Kolář
J. Šílený
Publikationsdatum
06.12.2023
Verlag
Springer Vienna
Erschienen in
Rock Mechanics and Rock Engineering
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI
https://doi.org/10.1007/s00603-023-03668-7