Journal ArticleDOI
Damage accumulation during triaxial creep of darley dale sandstone from pore volumometry and acoustic emission
Patrick Baud,Philip G. Meredith +1 more
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In this article, the authors performed triaxial creep tests on water-saturated samples of Darley Dale sandstone to investigate the effect of pressure on the process of time-dependent brittle deformation under all-round compression.About:
This article is published in International Journal of Rock Mechanics and Mining Sciences.The article was published on 1997-04-01. It has received 146 citations till now. The article focuses on the topics: Creep & Acoustic emission.read more
Citations
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Time-dependent cracking and brittle creep in crustal rocks: A review
TL;DR: A review of the available experimental evidence for brittle creep in crustal rocks, and various models developed to explain the observations can be found in this paper, where three main classes of brittle creep model have been proposed to explain these observations: phenomenological, statistical, and micromechanical.
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Failure mode and weakening effect of water on sandstone
TL;DR: In this paper, triaxial compression experiments were conducted on the Berea, Boise, Darley Dale, and Gosford sandstones under nominally dry and saturated conditions at room temperature.
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Time-dependent brittle creep in Darley Dale sandstone
TL;DR: In this paper, the authors used the stress-stepping technique to investigate the influence of confining pressure at effective confining pressures of 10, 30, and 50 MPa (while maintaining a constant 20 MPa pore fluid pressure).
Journal ArticleDOI
Brittle creep in basalt and its application to time-dependent volcano deformation
Michael J. Heap,Michael J. Heap,Patrick Baud,Philip G. Meredith,Sergio Vinciguerra,Andrew Bell,Ian Main +6 more
TL;DR: In this paper, the first experimental measurements of brittle deformation in a basic igneous rock (a basalt from Mt. Etna volcano) under triaxial stress conditions were presented.
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Micromechanics of brittle creep in rocks
TL;DR: In this paper, the authors provide a micromechanical model describing time dependent brittle deformation of water-saturated rocks under triaxial stress conditions. But their model is based on the sliding wing crack model of Ashby and Sammis [1990], and the crack length evolution is computed from Charles' law.
References
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Book
Experimental Rock Deformation: The Brittle Field
TL;DR: In this article, the Griffith Theory of Brittle Failure and the evolution of physical properties during brittle failure are discussed, including the role of pore fluid and friction and sliding phenomena.
Book
Fracture Mechanics of Rock
TL;DR: Fracture Mechanics and its Geophysical Applications as mentioned in this paper are applied to Hot, Dry Rock Geothermal Energy, with applications to Faults, Joints, Dikes and Solution Surfaces.
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Crack growth and development during creep of barre granite
TL;DR: In this article, a scan electron microscope was used to study the growth and development of cracks in Barre granite under load, and the tensile character of stress-induced cracks and other observatios by Tapponnier and Brace were confirmed.
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Temporal variations in seismicity during quasi-static and dynamic rock failure
TL;DR: In this article, a comprehensive model is presented which can explain temporal fluctuations in seismic b-values in the period leading to mechanical failure in terms of the underlying physical processes of time-varying applied stress and stress corrosion-enhanced crack growth under conditions of constant strain rate.