Application of Probabilistic Method to Stability Analysis of Gravity Dam Foundation over Multiple Sliding Planes

Table 1

Geologic parameters of bed base rock in the dam site.

Class of rock mass	Dry density ρ/g/cm^3	Saturated compressive strength /MPa	Bedrock/bedrock				Concrete/bedrock
			Deformation module /GPa	Poisson’s ratio	Strength against shear fracture		Strength against shear fracture
						/MPa		/MPa
II	2.65–2.70	80–100	15~21	0.20–0.25	1.20~1.35	1.50~1.60	1.10~1.20	1.10~1.15
III1	2.60–2.65	60–80	8~12	0.25–0.30	1.10~1.20	1.00~1.30	1.00~1.07	0.90~1.00