The Damage Constitutive Model of Sandstone under Water-Rock Coupling

Table 3

Analysis of the deterioration of the parameter of sandstone under the effect of water-rock interaction.

Cycle index N	Parameter	Test stage no. i	Total degree of degradation	Stage deterioration degree	Degree of single cycle deterioration
0	2.81	0	0.00	0.00	0.00
1	2.33	1	17.08	17.08	17.08
5	2.04	2	27.40	10.32	2.58
15	1.62	3	42.35	14.95	1.50