Quantifying progressive pre-peak brittle fracture damage in rock during uniaxial compression

Eberhardt, E.; Stead, D.; Stimpson, Brian

doi:10.1016/s0148-9062(99)00019-4

Cited by 538 publications

(232 citation statements)

References 15 publications

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“…The evolutions of the Young modulus and the Poisson's ratio are particularly investigated during damage-controlled tests. Contrary to constant amplitude tests, most of the tests describe a trend of decreasing Young modulus (up to one third of decrease) (Eberhardt et al 1999;Heap et al 2009Heap et al , 2010Kendrick et al 2013), while some others report increasing Young modulus (Trippetta et al 2013). The Young modulus is also reported as increasing for the first few cycles and decreasing afterwards (Yang et al 2015).…”

Section: Ae Energymentioning

confidence: 81%

“…Failure is reached for a maximum stress applied close to the monotonic strength of the material (Eberhardt et al 1999;Yang et al 2015Yang et al , 2017. Some authors report a lower strength after cycles of unloading/reloading (Kendrick et al 2013;Meng et al 2016), while some others (Yang et al 2015) present example of increasing strength.…”

Section: Stress-strain Curvesmentioning

confidence: 97%

“…Figure 1d represents a damage-controlled test using increasing mean and amplitude stress (Tien et al 1990;Martin and Chandler 1994;Eberhardt et al 1999). In these studies, such kind of low-cycle test is used to correlate damage with variations in cohesion and mobilised friction.…”

Section: Loadingmentioning

confidence: 99%

“…Most of the experimental works report uniaxial (simple compression) tests (Attewell and Sandford 1974;Eberhardt et al 1999;Bagde and Petroš 2005a). Such tests are representative of stress state in mine pillars and around galleries.…”

Section: Type Of Experimentsmentioning

confidence: 99%

“…The number of cycles applied is mostly low and varies between 5 and 50 (Eberhardt et al 1999;Heap et al 2010;Trippetta et al 2013;Schaefer et al 2015;Yang et al 2015). The increasing stress from one cycle to the other approaches a monotonic loading, although some differences are noted, especially a slight decrease in strength (Yang et al 2015).…”

Section: Stress-strain Curvesmentioning

confidence: 99%

See 4 more Smart Citations

Cyclic and Fatigue Behaviour of Rock Materials: Review, Interpretation and Research Perspectives

Cerfontaine¹,

Collin²

2017

Rock Mech Rock Eng

279

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Section: Ae Energymentioning

confidence: 81%

Section: Stress-strain Curvesmentioning

confidence: 97%

Section: Loadingmentioning

confidence: 99%

Section: Type Of Experimentsmentioning

confidence: 99%

Section: Stress-strain Curvesmentioning

confidence: 99%

See 3 more Smart Citations

Cyclic and Fatigue Behaviour of Rock Materials: Review, Interpretation and Research Perspectives

Cerfontaine¹,

Collin²

2017

Rock Mech Rock Eng

279

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Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques

et al. 2016

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Automated monitoring of freeze‐thaw cycles and fracture propagation in mountain rockwalls is needed to provide early warning about rockfall hazards. Conventional geoelectrical methods such as electrical resistivity tomography (ERT) are limited by large and variable ohmic contact resistances, requiring galvanic coupling with metal electrodes inserted into holes drilled into rock, and which can be loosened by rock weathering. We report a novel experimental methodology that combined capacitive resistivity imaging (CRI), ERT, and microseismic event recording to monitor freeze‐thaw of six blocks of hard and soft limestones under conditions simulating an active layer above permafrost and seasonally frozen rock in a nonpermafrost environment. Our results demonstrate that the CRI method is highly sensitive to freeze‐thaw processes; it yields property information equivalent to that obtained with conventional ERT and offers a viable route for nongalvanic long‐term geoelectrical monitoring, extending the benefits of the methodology to soft/hard rock environments. Contact impedances achieved with CRI are less affected by seasonal temperature changes, the aggregate state of the pore water (liquid or frozen), and the presence of low‐porosity rock with high matrix resistivities than those achieved with ERT. Microseismic monitoring has the advantage over acoustic emissions that events were recorded in relevant field distances of meters to decameters from cracking events. For the first time we recorded about 1000 microcracking events and clustered them in four groups according to frequency and waveform. Compared to previous studies, mainly on ice‐cracking in glaciers, the groups are attributed to single‐ or multiple‐stage cracking events such as crack coalescence.

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Damage‐Based Time‐Dependent Modeling of Paraglacial to Postglacial Progressive Failure of Large Rock Slopes

et al. 2018

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Large alpine rock slopes undergo long‐term evolution in paraglacial to postglacial environments. Rock mass weakening and increased permeability associated with the progressive failure of deglaciated slopes promote the development of potentially catastrophic rockslides. We captured the entire life cycle of alpine slopes in one damage‐based, time‐dependent 2‐D model of brittle creep, including deglaciation, damage‐dependent fluid occurrence, and rock mass property upscaling. We applied the model to the Spriana rock slope (Central Alps), affected by long‐term instability after Last Glacial Maximum and representing an active threat. We simulated the evolution of the slope from glaciated conditions to present day and calibrated the model using site investigation data and available temporal constraints. The model tracks the entire progressive failure path of the slope from deglaciation to rockslide development, without a priori assumptions on shear zone geometry and hydraulic conditions. Complete rockslide differentiation occurs through the transition from dilatant damage to a compacting basal shear zone, accounting for observed hydraulic barrier effects and perched aquifer formation. Our model investigates the mechanical role of deglaciation and damage‐controlled fluid distribution in the development of alpine rockslides. The absolute simulated timing of rock slope instability development supports a very long “paraglacial” period of subcritical rock mass damage. After initial damage localization during the Lateglacial, rockslide nucleation initiates soon after the onset of Holocene, whereas full mechanical and hydraulic rockslide differentiation occurs during Mid‐Holocene, supporting a key role of long‐term damage in the reported occurrence of widespread rockslide clusters of these ages.

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Quantifying progressive pre-peak brittle fracture damage in rock during uniaxial compression

Cited by 538 publications

References 15 publications

Cyclic and Fatigue Behaviour of Rock Materials: Review, Interpretation and Research Perspectives

Cyclic and Fatigue Behaviour of Rock Materials: Review, Interpretation and Research Perspectives

Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques

Damage‐Based Time‐Dependent Modeling of Paraglacial to Postglacial Progressive Failure of Large Rock Slopes

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