Research on the Influence of Weak Interlayer in Open-Pit Slope on Stability

Table 4

The relationship between buried depth of weak interlayer and slope stability.

Buried depth (m)	Safety factor	Sliding mode
40	1.069	Sliding along the weak layer
60	1.185	Sliding along the weak layer
80	1.314	Sliding along the weak layer
99	1.460	Shallow sliding on slope
120	1.461	Shallow sliding on slope