Results 11 to 20 of about 1,146,381 (249)

Evolution of mechanical properties and acoustic emission characteristics of granite with normal stress under true triaxial shear test [PDF]

open access: yesScientific Reports
Shear 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
doaj   +2 more sources

Calculation method and evolution rule of the strain energy density of sandstone under true triaxial compression [PDF]

open access: yesScientific Reports
Deep rock masses are typically in complex stress states, and research on the evolution of their strain energy density is of highly important for understanding their failure characteristics.
Liu Zhixi   +3 more
doaj   +2 more sources

New method for true-triaxial rock testing [PDF]

open access: yesInternational Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1997
Two new and related true-triaxial apparatus are described that make use of conventional triaxial pressure vessels in combination with specially configured, high-pressure hydraulic jacks inside these vessels. The development combines advantages not found in existing facilities, including a compact design, pore-pressure and flow-through capabilities, the
Wawersik, W. R.   +3 more
openaire   +3 more sources

Deformation, fracture characteristics and damage constitutive model of soft coal under true triaxial complex stress paths. [PDF]

open access: yesPLoS ONE
Understanding 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
doaj   +2 more sources

Energy Evolution and Fractal Characteristics of Sandstones Under True Triaxial Cyclic Loading and Unloading

open access: yesFractal and Fractional
To study the fractal characteristics and energy evolution of sandstones under true three-dimensional stress states, a true triaxial compression test and a cyclic loading and unloading test of sandstone specimens under different loads were carried out ...
Qihang Zhang   +2 more
doaj   +2 more sources

Microdynamic mechanical properties and fracture evolution mechanism of monzogabbro with a true triaxial multilevel disturbance method

open access: yesInternational Journal of Mining Science and Technology
The far-field microdynamic disturbance caused by the excavation of deep mineral resources and underground engineering can induce surrounding rock damage in high-stress conditions and even lead to disasters.
Zhi Zheng   +5 more
doaj   +2 more sources

Fractal Characteristics and Energy Evolution Analysis of Rocks under True Triaxial Unloading Conditions

open access: yesFractal and Fractional
To investigate the mechanical properties and energy evolution laws of rocks under true triaxial unloading conditions, a study was conducted using a true triaxial rock testing system on three different types of rocks: coal, sandy mudstone, and siltstone ...
Cheng Pan   +5 more
doaj   +2 more sources

A novel method for imitating true-triaxial stress path with conventional triaxial apparatus

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources
The 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
doaj   +2 more sources

Intermediate Principal Stress Effects on the 3D Cracking Behavior of Flawed Rocks Under True Triaxial Compression [PDF]

open access: yesRock Mechanics and Rock Engineering
: Crack initiation, growth, and coalescence in flawed rocks have been extensively studied for 2D (planar, penetrating) flaws under uniaxial/biaxial compression.
Choo, Jinhyun   +3 more
core   +2 more sources

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