Assessment of Slope Instability and Risk Analysis of Road Cut Slopes in Lashotor Pass, Iran

Table 1

Value of RMR_B in the two slopes of the Lashotor pass.

Parameters	Western cut slope		Eastern cut slope
	Value	Rating	Value	Rating
UCS	4.2 MPa	12	4.2 MPa	12
RQD	88%	17	89%	17
Joint spacing	1.3 m	15	0.6 m	10
Joint condition	Slicken sided and 1–5 mm wide	10	Slicken sided and 1–5 mm wide	10
Ground water condition	Damp	10	Damp	10
Summation (RMRB)		64		59