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

Table 8

Resultant instability probabilities of three slip paths calculated by DPG method.

Slip paths	Reliability method (DPG)		Deterministic method
	β
A	3.772	8.094 × 10^−5	2.56
B	3.664	1.244 × 10^−4	2.45
C	5.612	9.993 × 10^−9	10.71

Note: the deterministic method is equivalence safety factor method without considering the variation of the parameters against shear fracture.