A Study on the Slope Failure Monitoring of a Model Slope by the Application of a Displacement Sensor

Table 2

Proposal for an instrumentation standard.

Steps	Level of severity	Cumulated displacement (mm)	Slope of inverse displacement (1/mm/min)
Step 1	Normal	0	0
Step 2	Cautious	0.89	1.59
Step 3	Alert	1.52	0.03
Step 4	Critical	10.31	2.25