Freeze-Thaw Effects on Stability of Open Pit Slope in High-Altitude and Cold Regions

Table 1

Rock strength parameters after freeze-thaw tests.

Number of freeze-thaw cycles	Average saturated compressive strength (MPa)
	Coarse sandstone	Fine sandstone	Muddy siltstone
0	104.1	114.8	89.6
30	90.1	98.8	73.1
60	83.9	86.7	58.7
90	74.2	79.6	50.1
120	64.4	72.3	42.3