HKCV Rheological Constitutive Model of Mudstone under Dry and Saturated Conditions

Figure 4

Strain of mudstone and strain rate over time (under dry condition). is the time point when the rock specimens enter the stable rheological stage from the decelerated rheological stage. is the strain value at this moment. is the time point when the rock specimens enter the accelerated rheological stage from the stable rheological stage. is the strain value at the boundary point between the stable rheological stage and the accelerated rheological stage. is the time point when the final failure of rock specimens occurs. is the strain value at the time of failure.