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

Table 2

Mechanical parameters of red sandstone samples under different hydraulic pressures.

Specimen	/MPa	/MPa	/MPa	/GPa	/10^-3
HMC-1	196.92	0	198.92	37.63	6.56
HMC-2	180.81	2.5	180.81	34.98	6.09
HMC-3	158.77	5	158.77	25.82	7.05
HMC-4	123.40	10	123.40	20.77	6.52

Notes: is the peak strength, is elastic modulus, and is the strain at peak strength.