Multiscale Laboratory Study and Numerical Analysis of Water-Weakening Effect on Shale

Table 1

Mechanical parameters in numerical modelling.

Immersion time (days)	Elastic modulus (GPa)	Internal friction angle (°)	Cohesion (MPa)	Tensile strength (MPa)
0	27.38	55.52	6.83	8.5
2	25.67	54.34	6.56	7.91
15	20.9	50.1	5.81	6.21
30	17.59	43.81	4.99	4.51
50	13.55	38.33	4.34	3.49
70	12.36	37.13	4.29	3.32
90	11.4	36.57	4.2	3.23