Permeability evolution during progressive deformation of intact coal and implications for instability in underground coal seams

Keyphrases

• Coal Seam 100%
• Permeability Evolution 100%
• Volumetric Strain 66%
• Microcracks 66%
• Mining Face 66%
• Desorption Rate 66%
• CO2 Gas 33%
• Desorption 33%
• Order of Magnitude 33%
• Competition Process 33%
• Horizontal Stress 33%
• Biaxial Strain 33%
• Pore Pressure 33%
• Young's Modulus 33%
• Deformation Measurement 33%
• Crack Closure 33%
• Uniaxial Compression 33%
• Process-based Model 33%
• Gas Migration 33%
• Constant Pressure 33%
• Gas Pressure 33%
• Confining Stress 33%
• Pressure Differential 33%
• Shear Failure 33%
• Fault Slip 33%
• Hysteretic 33%
• Pressure Rate 33%
• Cleat 33%
• Deviatoric Stress 33%
• CO2 Injection 33%
• Carbon Dioxide CO2 33%
• Dilatant 33%
• Axial Crack 33%
• Crack Opening 33%
• Gas Desorption 33%
• Transverse Crack 33%
• Post-peak Strength 33%
• Differential Method 33%
• Inflection Point 33%
• Vertical Stress 33%
• Tensile Failure 33%
• Strength Evolution 33%
• Deformation Regime 33%
• Deviatoric Strain 33%
• Gas Overpressure 33%
• Permeability Rate 33%

Engineering

• Coal Seam 100%
• Volumetric Strain 66%
• Young's Modulus 33%
• Peak Strength 33%
• Gas Migration 33%
• Confining Stress 33%
• Differential Pressure 33%
• Tensiles 33%
• Gas Pressure 33%
• Shear Failure 33%
• Crack Opening 33%
• Transverse Crack 33%
• Deviatoric Stress 33%
• Horizontal Direction 33%
• Inflection Point 33%
• Competing Process 33%
• Axial Strain 33%

Earth and Planetary Sciences

• Desorption 100%
• Coal Seam 100%
• Permeability Evolution 100%
• Carbon Dioxide 75%
• Volumetric Strain 50%
• Pore Pressure 25%
• Confining 25%
• Gas Pressure 25%
• Fault Slip 25%
• Axial Strain 25%
• Differential Pressure 25%
• Inflection Point 25%