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Effect of true triaxial principal stress unloading rate on strain energy density of sandstone
Scientific ReportsDeep rock are often in a true triaxial stress state. Studying the impacts of varying unloading speeds on their strain energy (SE) density is highly significant for predicting rock stability.
Zhixi Liu +3 more
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Sand production simulation under true-triaxial stress conditions [PDF]
International Journal of Rock Mechanics and Minings Sciences, 2013 Abstract Laboratory sanding experiments were carried out under true-triaxial stress conditions. The objective was to investigate the effect of state of stresses and fluid flow on the mechanism of sanding, and the development of the failure zone around the borehole.
A Younessi, V Rasouli
exaly +5 more sources
Glass Beads Test with True Triaxial Stress Path Achieved by Conventional Triaxial Apparatus
Fractal and FractionalThe impact of fabric anisotropy, fractal dimension, and breakage on the strength and deformation of granular materials were diminished by uniform-size spherical glass beads.
Xuefeng Li, Jiahui Ma, Longlong Lv
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Verification of a novel stress path method by true-triaxial test
Scientific ReportsTo verify the novel method of achieving a true-triaxial stress path with the pseudo-triaxial apparatus, a series of drained and undrained tests were carried out for the identical scheme with pseudo-triaxial apparatus and true-triaxial apparatus ...
Zhigang Ma, Xuefeng Li, Longlong Lv
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A novel method for imitating true-triaxial stress path with conventional triaxial apparatus
Geomechanics and Geophysics for Geo-Energy and Geo-ResourcesThe stress paths of the cylindrical specimen in the p–q stress space by controlling the ratio of the axial and the radial loading is guaranteed to be consistent with the cuboid specimen, a novel method for imitating true-triaxial stress path by ...
Xuefeng Li, Zhigang Ma
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Influence of principal stress effect on deformation and permeability of coal containing beddings under true triaxial stress conditions [PDF]
Royal Society Open Science, 2019 In situ stress is generally an anisotropic/true triaxial stress (σ1 > σ2 > σ3). Bedding weakens the continuity and integrity of coal. It is critical to understand the mechanical behaviour and gas migration of coal under true triaxial stress conditions ...
Jiahui Dai +3 more
doaj +2 more sources
International Journal of Mining Science and Technology, 2021 Precisely understanding the dynamic mechanical properties and failure modes of rocks subjected to true triaxial stress state (σ1 > σ2 > σ3, where σ1, σ2, and σ3 are the major principal stress, intermediate principal stress, and minor principal stress ...
Wei You +4 more
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International Journal of Mining Science and Technology, 2022 It has become an inevitable trend of human development to seek resources from the deep underground. However, rock encountered in deep underground engineering is usually in an anisotropic stress state (σ1>σ>σ3) due to the influences of geological ...
Heping Xie +4 more
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Strength and deformation properties of frozen sand under a true triaxial stress condition
Soils and Foundations, 2022 In recent years, the mechanical properties of frozen soils under complex stress states have attracted significant attention; however, limited by the test apparatus, true triaxial tests on frozen soils have rarely been conducted. To study the strength and
Kun Huang +3 more
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Evolution of mechanical properties and acoustic emission characteristics of granite with normal stress under true triaxial shear test [PDF]
Scientific ReportsShear failure is a typical failure mode of surrounding rock in underground excavations. The mechanical properties and damage evolution characteristics of rock under true triaxial shear conditions are essential for stability evaluation and monitoring ...
Jizhe Guo +7 more
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