Stability Assessment and Optimization Design of Lakeside Open-Pit Slope considering Fluid-Solid Coupling Effect

Table 1

Mechanical parameters of the rock formations contained in numerical model.

Lithology	Weathering degree	Density (kN/m^3)	Cohesion (kPa)	Friction angle (°)	Elasticity modulus; (GPa)	Poisson’s ratio	Porosity (%)	Dilation angle (°)	Permeability (cm/s)
Quaternary	Weathered	18.4	31.2	19.1	0.019	0.32	45	7	5.00E − 03
Granodiorite porphyry	Unweathered	28	440.1	29	40	0.22	10	24	3.30E − 04
Triassic limestone	Unweathered	27	411.3	34	28.5	0.27	25	14	1.87E − 03
	Weathered	25	180	29	25.4	0.3	31.25	17	2.13E − 03
Permian limestone	Unweathered	27	411.3	34	28.5	0.27	29.6	14	2.03E − 03
	Weathered	25	180	29	25.4	0.3	37	17	2.53E − 03