Results 41 to 50 of about 1,259,198 (268)

Exponential true triaxial strength criteria for rock

open access: yesYantu gongcheng xuebao, 2018
The rock strength is the premise and foundation for stability evaluation of rock engineering and optimization design of structures. Based on the true triaxial test results, the evolution of rock strength are analyzed: (1) The rock strength increases with
ZHANG Qiang , LI Cheng , GUO Qiang , MIN Ming , JIANG Bin-song , WANG Yan-ning
doaj   +1 more source

Nonlinear criteria and the influence of the average principal stress on rocks destruction [PDF]

open access: yes, 2018
Purpose. Consider possible series methods of Mohr-Coulomb nonlinear criterion that takes into account stresses in the plane of fracture. Investigate the influence of the average principal stress on rocks destruction when cylinder modeling under axial and
Olovyannyy, A
core   +1 more source

Experimental investigation of wave propagation in three dimensions in unbounded particulate assemblies [PDF]

open access: yes, 2015
Understanding wave propagation through soils is essential for site response analysis in earthquake engineering, interpretation of geophysical surveys and SASW (Spectral Analysis of Surface Waves), interpretation of laboratory bender element tests, etc ...
Camenen, Jean-Francois   +5 more
core   +1 more source

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   +1 more source

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

Experimental study of mechanical properties of highly-stressed rocks under true triaxial unloading conditions with different unloading directions

open access: yesShuiwen dizhi gongcheng dizhi
During the excavation process of deep rock masses, the surrounding rock stress field forms alternating zones of stress increase (loading zones) and stress decrease (unloading zones) near the excavation surface, which can easily trigger instability and ...
Qian XIANG   +5 more
doaj   +1 more source

The role of fluid pressure in induced vs. triggered seismicity. Insights from rock deformation experiments on carbonates [PDF]

open access: yes, 2016
Fluid overpressure is one of the primary mechanisms for tectonic fault slip, because fluids lubricate the fault and fluid pressure reduces the effective normal stress that holds the fault in place.
COLLETTINI, CRISTIANO   +1 more
core   +1 more source

Sand production simulation under true-triaxial stress conditions [PDF]

open access: yesInternational Journal of Rock Mechanics and Mining 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.
Younessi, Ahmadreza   +2 more
openaire   +2 more sources

Improvement and strength testing of true tri-axial apparatus with one chamber and four cells and rigid-flexible-flexible loading boundary mechanism—True triaxial apparatus developed in Xi'an University of Technology

open access: yesYantu gongcheng xuebao, 2017
The true triaxial apparatus is an important instrument, which is usually emplyed to investigate the mechanical characteristics of soils under complicated stress conditions.
SHAO Sheng-jun 1, 2, XU Ping 2, 3, SHAO Shuai 1, CHEN Fei 1
doaj   +1 more source

Influences of True Triaxial Loading-Unloading Stress Paths on Mechanical Properties and Wave Velocity of Coal Samples subject to Risk of Rock Burst

open access: yesShock and Vibration, 2021
To study fracture evolution and peak stress in burst risk coal samples (BRCSs) under true triaxial loading and unloading conditions, experimental and numerical research was applied to BRCSs under true triaxial stress paths entailing “x-direction ...
Wei Shen   +4 more
doaj   +1 more source

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