A triaxial creep model for deep coal considering temperature effect based on fractional derivative

A triaxial creep model for deep coal considering temperature effect based on fractional derivative is proposed for the condition of triaxial stress state. In order to study the temperature effect on creep deformation of deep coal, the thermal damage variable is established based on the Weibull distribution and continuum damage mechanics theory. The thermal damage variable is assigned to the Hooke body and Abel dashpot in order to characterize...