Stability Charts for Pseudostatic Stability Analysis of Rock Slopes Using the Nonlinear Hoek–Brown Strength Reduction Technique

Table 3

Regression equations for the seismic weighting factors.

Slope angle, β	Regression equations, fkh	Fitting degree, R^2
30°	fkh = 0.99e^−2.0kh	0.998
45°	fkh = 0.99e^−1.6kh	0.999
60°	fkh = 1.01e^−1.47kh	0.996
75°	fkh = 1.01e^−1.47kh	0.996