Figure 4
From: Investigation on the pore characteristics of coal specimens with bursting proneness
Plots of cumulative volume of every specimen as a function of pressure before and after the uniaxial compression failure and linear regression of pore volume versus pressure. (a) specimens from Hongqinghe Coal Mine before uniaxial compression failure; (b) specimens from Nalinhe Coal Mine before uniaxial compression failure; (c) specimens from Hongqinghe Coal Mine after uniaxial compression failure; (d) specimens from Nalinhe Coal Mine after uniaxial compression failure.
