An Improved Approach of Classical Upper Bound Theory for Stability Analysis of Layered Slopes

Table 3

Comparison of the stability results with of 30°.

Reference	Analytical methods	Slope FOS
Kumar and Samui [20]	Upper bound approach	1
Deng et al. [28]	Morgenstern–Price	1.093
Zhao et al. [29]	Bishop	1.080
Presented	No smoothing	1.061
	Smoothing	1.062
Geo-Slope (Software)	Morgenstern-Price/Bishop	1.086/1.084