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
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Failure and deformation characteristics of shale subject to true triaxial stress loading and unloading under water retention and seepage [PDF]
Royal Society Open Science, 2022 A multi-functional true triaxial fluid-structure coupling system was used to conduct water retention and seepage tests of shale under true triaxial loading and unloading stress paths.
Shujian Li +4 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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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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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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Effects of intermediate stress on deep rock strainbursts under true triaxial stresses
Journal of Rock Mechanics and Geotechnical Engineering, 2023 The effect of intermediate stress (in situ tunnel axial) on a strainburst is studied with a three-dimensional (3D) bonded block distinct element method (DEM).
Lihua Hu +4 more
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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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Deformation, fracture characteristics and damage constitutive model of soft coal under true triaxial complex stress paths. [PDF]
PLoS ONEUnderstanding the mechanical properties and damage deterioration mechanisms of soft coal under true triaxial complex stress paths is crucial for predicting and evaluating the stability of the roof during roadway excavation in thick soft coal seams.
Chongyang Jiang +3 more
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A multi-scale observation and crack statistics based method for analyzing failure mechanism of pre-flawed rock under true triaxial stress. [PDF]
PLoS ONEUnderstanding the failure mechanism of the rock mass under the general stress state is of great importance for the safe constructions of the underground engineering.
Bangxiang Li +6 more
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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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