Factors controlling the mechanical properties degradation and permeability of coal subjected to liquid nitrogen freeze-thaw

Keyphrases

• Coal Permeability 100%
• Freeze-thaw 100%
• Liquid Nitrogen 100%
• Mechanical Property Degradation 100%
• Freeze-thaw Cycles 60%
• Freezing Time 40%
• Mechanical Properties 20%
• Ultrasonic Wave Velocity 20%
• Detection Method 20%
• Uniaxial Compression 20%
• Permeability Enhancement 20%
• Fracture Permeability 20%
• Moisture Content 20%
• Positive Impact 20%
• Coal Reservoir 20%
• Ultrasonic Wave 20%
• Saturation Level 20%
• High Moisture Content 20%
• Coal Strength 20%
• Induced Fracture 20%
• Wave Detection 20%
• Third Variables 20%
• Freeze-thaw Damage 20%
• Testing System 20%
• Acoustic Emission Testing 20%
• Frozen-thawed 20%
• Coal Mass 20%
• Moisture Saturation 20%

Engineering

• Ultrasonics 100%
• Property Degradation 100%
• Thaw Cycle 100%
• Experimental Result 50%
• Fracture Permeability 50%
• Coal Reservoir 50%
• Fractal Dimension 50%
• Coal Strength 50%
• Acoustic Emission Testing 50%

Earth and Planetary Sciences

• Liquid Nitrogen 100%
• Freeze-Thaw Cycle 100%
• Ultrasonic Radiation 100%
• Acoustic Emission 50%
• Coal Reservoir 50%
• Fracturing 50%
• Detection Method 50%