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Influence of multiple porous structure evolution on physical–mechanical properties and damage mechanism of sandstone heated continuously/periodically with the identical heating time
This paper studied the physical–mechanical properties and damage mechanism based on porous structure evolution after continuous/periodic heating with...
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Damage Evolution and Failure Mechanism of Coal Sample Induced by Impact Loading under Different Constraints
Information of rock strength under dynamic loading conditions is required in many engineering applications. In this study, a specially designed...
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Experimental study on unloading failure characteristics and damage evolution rules of deep diorite based on triaxial acoustic emission tests
With the increasing depletion of shallow-earth mineral resources, deep mining will become the primary route of future mineral resources development....
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Experimental study on pressure stimulated current response characteristics during damage evolution of water-bearing coal samples
The damage and rupture behavior of water-bearing coal induced by coal mining disturbance can lead to large-scale rock engineering instability and...
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Permeability Damage Mechanism and Evolution of Gas-Bearing Coal Seams Induced by Drilling Fluid
Gas drainage is critical for underground coal mining in coal seams that contain high coalbed methane. We propose an underground pressurized drilling...
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Freezing characteristics and microstructural damage evolution of granular materials in cold regions under freezing–thawing cycles
Granular materials in high-latitude cold and high-altitude areas are susceptible to damage and deterioration by freezing and thawing, which is...
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Effect of Crack Angle on Mechanical Behaviors and Damage Evolution Characteristics of Sandstone Under Uniaxial Compression
Hydraulic fracturing has been extensively utilized to control strata in coal mines. However, the mechanical characteristics and damage evolution of...
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Spatial evolution mechanism of coal structure damage and gas permeability under water-based ultrasonic treatment
This study investigates the spatial damage effect of water-based ultrasonic on the structure and the permeability of high-grade coal. Herein,...
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Numerical modeling and damage evolution research on the effect of joint geometrical parameters in nonpersistent jointed rock masses
The strength and deformation of rock masses containing nonpersistent joints are controlled by the complex interactions of joints and intact rock...
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Experiment on the energy damage development process of water-saturated limestone under varied loading rates
Karst water damage is one of the more visible forms of subsurface engineering karst geological hazards. To investigate the energy damage evolution...
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Macro- and Meso-Damage Evolution Characteristics of Coal Using Acoustic Emission and Keuence Testing Technique
Acoustic emission (AE) experiments of Yuwu and Guangli coal samples under uniaxial compression were carried out by using the electro-hydraulic servo...
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Micro-damage evolution and macro-degradation of red sandstone under thermal and chemical erosion conditions
Understanding the variations of the physical-mechanical properties of the surrounding rock in coupled thermal and acidic groundwater erosion...
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Mechanical deterioration effect and damage evolution characteristics of soft sandstone with different water-immersed heights under uniaxial compression
Soft sandstones are known to deteriorate with increasing water saturation. This study explores the effects of different immersion heights on the...
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Energy dissipation and fatigue damage evolution of sandstone under different upper limit stresses
To study the energy dissipation and damage evolution of sandstone under cyclic loading, the uniaxial cyclic loading tests of sandstone under...
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Damage evolution of phyllite based on uniaxial compression and acoustic emission tests
Phyllite is widely distributed in our country. Its characteristics are the low strength and developed layered joints which may cause large...
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Strain Rate Effect of Siltstone Under Triaxial Compression and Its Interpretation from Damage Mechanics
Four groups (1 × 10 –5 /s, 1 × 10 –4 /s, 1 × 10 –3 /s and 1 × 10 –2 /s) of triaxial compression tests at a confining pressure of 30 MPa are carried out to...
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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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Damage evolution and fragmentation behavior of pyramid cut blasting under uniaxial compression
Pyramid cut blasting is an essential form of inclined hole cut blasting, but the in-situ stress effect of pyramid cut blasting is rarely studied....
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Investigation on the Evolution of Shock Wave Energy in the Fracturing Process via High voltage Electric Pulse
High voltage electric pulse (HVEP) was used to perform concrete cracking experiments to demonstrate the feasibility of this technique for cracking...
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Pore characteristic evolution and damage deterioration of granite subjected to the thermal and cooling treatments combined with the NMR method
Temperature disturbance could cause deterioration of rock mechanical parameters, and it is of great significance to establish the corresponding...
