Research on Dynamic Evaluation Model of Slope Risk Based on Improved VW-UM

Table 2

Qualitative index system for risk assessment of slope in Yuebao Open-pit Mine and the corresponding evaluation grade and assignment.

Classification of influence degree	Assignment	Influencing factor
		Rock mass structure	Geological structure	Formation lithology	Ground-Water	Hydrological condition
		(X1)	(X2)	(X3)	(X6)	(X7)
Grade I; (C1)	1	The rock mass is soft and broken, and its structural plane is developed	Fault joints and fractures are very developed, and the rock mass is broken approximately	soft rock	medium water pressure	strong permeability and weak surface
Grade II; (C2)	2	The rock mass is relatively soft and broken, and the structural plane is relatively developed	There are faults, fractures are developed, and the integrity of rock mass is poor	soft rock~a little hard	fissure water	medium permeable and weak interlayer
Grade III; (C3)	3	The rock mass is relatively complete with layered structure	There are faults, fractures are developed, and rock mass integrity is medium	a little hard	moist	weak water permeability and weak interlayer affecting engineering quality
Grade IV; (C4)	4	The rock mass is massive lump	No fault or small fault that does not affect the project, slightly developed fracture	hard	dry	water permeability is small, no weak side