Characteristics of Unloading Creep of Tuffaceous Sandstone in East Tianshan Tunnel under Freeze-Thaw Cycles

Table 5

Radial stable creep rate.

Confining pressure (MPa)	Radial stable creep rate (10^−5/h)
	T0 specimen	T10 specimen	T20 specimen	T40 specimen	T60 specimen
20	0.07	0.07	0.12	0.13	0.16
17	0.18	0.2	0.22	0.3	0.41
14	0.28	0.38	0.4	0.52	0.85
11	0.53	—	0.831	0.88	1.2