Stability Assessment of Dangerous Rock Mass of an Overhanging Slope in Puerdu Town, Southwestern China

Table 6

Criteria for the stability evaluation of dangerous rocks.

Failure mode	Stable state
	Unstable	Understable	Basically stable	Stable
Falling type	K < 1.0	1.0 ≤ K < 1.5	1.5 ≤ K < 1.8	K ≥ 1.8
Tipping type	K < 1.0	1.0 ≤ K < 1.3	1.3 ≤ K < 1.5	K ≥ 1.5