Creep Investigation on Shale-Like Material with Preexisting Fissure under Coupling Temperatures and Confining Pressures

Table 2

Comparison of the creep characteristics between Tang Kou shale and shale-like material.

Index	Instantaneous strain (×10^−3)	Axial strain (×10^−3)	Influence of temperature to creep rate	Influence of confining pressure to creep rate
Tang Kou shale	0.140∼0.258	0.32∼1.52	Creep rate increases with temperature	Creep rate decreases with confining pressure
Shale-like material	0.199∼0.628	0.30∼1.62	Creep rate increases with temperature	Creep rate decreases with confining pressure