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Study on Impact Dynamic Behavior and Failure Characteristics of Coal based on True Triaxial Split–Hopkinson Pressure Bar Experiments
Full understanding of dynamic mechanical characteristics of coal samples under true triaxial condition is of great significance for preventing and...
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A new triaxial apparatus for high-fluidity shield muck: validation and application
To study the shear behaviour of foam-conditioned muck with high fluidity in an earth pressure balance (EPB) shield, a new triaxial apparatus was...
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Triaxial Deformation Rate Analysis (DRA)
Reliable and low-cost in situ stress measurement is important for design and operation of underground excavations. Deformation rate analysis (DRA) is...
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Experimental Study of Compact Sandstone Deformation Under Axisymmetric Triaxial Loading Along Specific Paths in Stress Space
The deformation of rocks well below their ultimate strengths is frequently described through the constant stiffness moduli of the linear elasticity...
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Mechanical and Volumetric Fracturing Behaviors of Layered Composite Sandstones with a Contrast in Grain Size Under True Triaxial Stresses
The failure characteristics of layered rocks are a vital issue for stability evaluations of underground engineering projects. Layered rocks in a...
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Damage constitutive model and meso-failure characteristics of freeze–thaw rock under triaxial compression
In order to evaluate the damage deterioration degree of freeze–thaw rock under in-situ stress in cold area engineering, it is necessary to establish...
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Brittleness Characteristics and Damage Evolution of Coal Under True Triaxial Loading Based on the Energy Principle
In this study, triaxial compression tests were conducted on coal to better understand the mechanism of coal burst disasters in deep coal mining. The...
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Energy-Driven Damage Constitutive Model of Water-Bearing Coal Under Triaxial Compression
A theoretical basis for evaluating safety and stability of underground engineering is to study changes in rock strength and failure. In the process...
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Experimental Investigation on Rockburst Energy Characteristics of True Triaxial Unloading in Sandstone Under High Stress
To explore the energy evolution characteristics of rockbursts and the mechanism of excess energy in rockbursts, a self-developed rockburst...
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Studying the Features of Measuring Rock Deformations During Tests at the High Pressure High Temperature Triaxial Apparatus
This paper presents the results of a series of experiments on studying the effect of the sealing membrane type and the mounting technique of LVDT...
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Shear Failure Mechanisms of Sandstone Subjected to Direct, True Triaxial and Confining Shear Test Conditions
The shear mechanical properties are the important factors affecting the failure of rock mass. At present, tests measuring the shear mechanical...
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Dynamic Characteristics of Coal under Triaxial Constraints Based on the Split–Hopkinson Pressure Bar Test System
Deep coals are mostly in a three-dimensional (3D) unequal stress state. In the hope of revealing dynamic characteristics of deep coals under impact...
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Experimental investigation on pillar rockburst of true triaxial four-face rapid unloading under high stress
This study aimed to explore the effect of four-sided rapid unloading on delayed pillar rockbursts under high pressures. To this end, true triaxial...
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Mechanical properties of cemented tailings backfill under true triaxial loading condition
The filling mining method can not only achieve the goaf, but also reduce the discharge of surface waste. The backfill is in a complex triaxial stress...
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A New System for the Direct Visual Observation and Measurement of the Sliding Behavior of Rock-Like Materials Under Triaxial Compression
We developed a novel measurement system to directly visually observe the sliding behavior of rocks inside a triaxial test apparatus. The proposed...
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Study on Mechanical and Permeability Characteristics of Containing Gas Coal-Rock Under Conventional Triaxial Compression
In this paper, the mechanical and permeability experiments of containing-gas raw coal and sandstone samples under conventional triaxial compression...
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Initiation and Propagation of Interface Cracks in Layered Composite Rocks: An Investigation Using True Triaxial Experiments
The interface crack is the typical defect in fracture mechanics, and it often exists inside the layered composite rocks (LCRs). How does it respond...
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Fracture propagation and failure mode characteristics of lamellar lacustrine shale under true triaxial compression conditions
Shale oil in China is mainly concentrated in lacustrine shale reservoir, which has poor structural continuity, strong heterogeneity and strong...
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Evaluation of Slow-Releasing Energy Material (SREMA) Injection for In-Situ Rock Breaking Under Uniaxial and Triaxial Loading: An Experimental Study
Permeability enhancement of impervious rock formations is crucial for the exploitation of ore deposits, which are uneconomic using conventional...
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Disturbance mechanical behaviors and anisotropic fracturing mechanisms of rock under novel three-stage true triaxial static-dynamic coupling loading
The surrounding rock in deep underground engineering is often subjected to true three-dimensional high-stress conditions. Excavation unloading...
