Study on the effect of micro-geometric heterogeneity on mechanical properties of brittle rock using a grain-based discrete element method coupling with the cohesive …

C Pan, X Li, L He, J Li - International Journal of Rock Mechanics and …, 2021 - Elsevier
The micro-geometric heterogeneity has a significant effect on the mechanical behavior and
failure mode of brittle rocks. To study the influence of the size distribution and preferred …

[HTML][HTML] Size effects on the tensile strength and fracture toughness of granitic rock in different tests

I Pérez-Rey, A Muñoz-Ibáñez… - Journal of Rock …, 2023 - Elsevier
This study investigates the tensile failure mechanisms in granitic rock samples at different
scales by means of different types of tests. To do that, we have selected a granitic rock type …

Characterization of the negative Poisson's ratio effect of the thermal-damaged crystalline rock by the grain-based model

X Huang, L Xu, T Zhao, S Lu, Z Sun, D Ding - International Journal of Rock …, 2023 - Elsevier
A natural rock often has a positive Poisson's ratio during compression. However, the thermal-
damaged rock can abnormally present a negative Poisson's ratio. Thus far, the related …

Micro-scale fracturing mechanisms in rocks during tensile failure

G Shams, P Rivard, O Moradian - Rock Mechanics and Rock Engineering, 2023 - Springer
Understanding the fracturing mechanisms of rock on both macro-and micro-scale is
important for properly designing rock engineering applications. However, there is still a lack …

Laboratory test study on supercritical carbon dioxide fracturing granite: a quantitative review

B Zheng, S Qi, W Lu, S Guo, N Liang, X Yu… - … and Geophysics for Geo …, 2023 - Springer
Supercritical carbon dioxide (ScCO2) fracturing to transform geothermal reservoirs is a new
technology in geothermal development, with great prospects. In this paper, the current …

Rate effect on the direct shear behavior of granite rock bridges at low to subseismic shear rates

G Luo, S Qi, B Zheng - Journal of Geophysical Research: Solid …, 2022 - Wiley Online Library
Natural faults are often heterogeneous with spatially variable cohesion caused by healing
processes. Using rock bridges as laboratory analogs, we investigate how cohesion‐healed …

Simulation of brittle failure around Canada's mine-by experiment tunnel using 2D continuum-based Voronoi tessellated models

S Sanipour, N Bahrani, A Corkum - Rock Mechanics and Rock …, 2022 - Springer
The failure process of brittle rocks under compression involves the initiation, accumulation
and propagation of tensile fractures before peak stress is reached. This process is …

Experimental Research on Supercritical Carbon Dioxide Fracturing of Sedimentary Rock: A Critical Review

B Zheng, S Qi, W Lu, S Guo, Z Wang… - Acta Geologica Sinica …, 2023 - Wiley Online Library
Supercritical carbon dioxide (ScCO2) fracturing has great advantages and prospects in both
shale gas exploitation and CO2 storage. This paper reviews current laboratory experimental …

Cracking behavior and acoustic emission characteristics of heterogeneous granite with double pre-existing filled flaws and a circular hole under uniaxial compression …

X Hu, X Gong, H Hu, P Guo, J Ma - Bulletin of Engineering Geology and …, 2022 - Springer
In geological engineering, the existence of fault fracture zones has an obvious impact on the
stability and failure process of the surrounding rock of mountain tunnels. In this study, a …

[HTML][HTML] Tensile strength and failure behavior of rock-mortar interfaces: Direct and indirect measurements

G Shams, P Rivard, O Moradian - Journal of Rock Mechanics and …, 2024 - Elsevier
The tensile strength at the rock-concrete interface is one of the crucial factors controlling the
failure mechanisms of structures, such as concrete gravity dams. Despite the critical …