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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

Modified true triaxial Hoek-Brown criterion considering intermediate principal stress effect [PDF]

open access: yesMeitan kexue jishu
In order to improve the Hoek-Brown strength criterion not considering the influence of intermediate principal stress on rock strength, the evolutions of rock strength were investigated according to the results of the rock true triaxial compression test ...
Yapeng LI   +3 more
doaj   +2 more sources

Physical simulation test of true triaxial rock mechanics for waterflood dilation in offshore oilfields [PDF]

open access: yesScientific Reports
The reservoirs in the western South China Sea oilfield are characterized by low permeability, poor pore connectivity, high laminated content, severe pollution, and prominent interlayer contradictions.
Dengke Li   +4 more
doaj   +2 more sources

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

Experimental Investigation on the Deformation, Strength, and Acoustic Emission Characteristics of Sandstone under True Triaxial Compression

open access: yesAdvances in Materials Science and Engineering, 2018
The study of deformation, strength, and other mechanical characteristics of sandstone under true triaxial compression is significant for understanding failure mechanisms in rock and evaluating the stability of underground structures.
Zhaolin Li   +4 more
doaj   +2 more sources

Method Improvement and Effect Analysis of Triaxial Compression Acoustic Emission Test for Coal and Rock

open access: yesAdvances in Civil Engineering, 2019
In the study of the acoustic emission (AE) characteristics of rock samples or coal samples under triaxial compression conditions, most scholars carry out relevant experiments by placing the AE detector on the outer wall of the triaxial chamber of the ...
Yan Zhou, Chuanxiao Liu, Depeng Ma
doaj   +2 more sources

Temperature effect of rockburst in granite caverns: insights from reduced-scale model true-triaxial test

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources
To investigate the influence of thermal treatment on the rockburst in granite caverns, true-triaxial compression tests were conducted on pre-heated granite cubic samples containing a circular through-hole using a true-triaxial test system, and the micro ...
Xuefeng Si   +4 more
doaj   +2 more sources

Numerical behavior in clays normally consolidated considering true triaxial compression paths [PDF]

open access: yes, 2022
En la mecánica de suelos la prueba triaxial, se considera como uno de los métodos más confiables debido a que simula las condiciones del suelo in situ, sin embargo, este tipo de ensayo presenta una gran limitación puesto que asume que los esfuerzos ...
Robles Toquica, Cindy Milena
core   +1 more source

Railway ballast anisotropy testing via true triaxial apparatus [PDF]

open access: yes, 2020
This paper aims to demonstrate the anisotropic behaviour of railway ballast via true-triaxial tests. To do so, a novel, large-scale, true-triaxial testing apparatus (GeoTT) is designed and constructed.
Laghrouche, O   +4 more
core   +5 more sources

Research on the mechanical characteristics of granite failure process under true triaxial stress path

open access: yesRock and Soil Mechanics, 2021
The true triaxial loading and unloading tests on granite were conducted to obtain the mechanical characteristics of the granite in the construction area of an underground cavern.
LIU Jie   +3 more
doaj   +1 more source

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