A New Damage Model of Rock Considering Residual Strength under Seepage Pressure

Table 1

Rock mechanical parameters of fractured limestone [20, 24].

Seepage pressure (MPa)	Confining pressure (MPa)	Peak strength (MPa)	Deformation modulus (GPa)	Poisson’s ratio	Residual strength (MPa)
2	7	60.6	32.4	0.32	31.6
	17	82.4	50.4	0.21	66.0
8	12	60.0	23.3	0.30	36.1
	22	88.5	46.0	0.25	72.8
14	17	64.1	26.9	0.29	34.9