Investigation on Creep Behavior and Permeability Evolution Characteristics of Sandstone under Different Pore Pressures

Table 1

Physical parameters and test conditions of red sandstone samples.

Specimen	/mm	/mm	/g·cm^-3	/m·s^-1	/MPa	/MPa	Testing design
HMS-1	101.32	50.65	2.35	2415	5	0	TC
HMS-2	99.89	50.12	2.37	2424	5	2.5	TC
HMS-3	98.76	50.11	2.42	2398	5	5	TC
HMS-4	100.56	50.08	2.32	2451	5	10	TC
HML-1	100.21	50.05	2.39	2432	5	0	MC
HML-2	98.90	49.87	2.41	2441	5	2.5	MC
HML-3	101.15	50.12	2.35	2409	5	5	MC
HML-4	100.32	50.15	2.36	2425	5	10	MC

Notes: is length, is diameter, is density, is elastic wave velocity, is confining pressure, and .