Energy Dissipation and Damage Evolution Characteristics of Salt Rock under Uniaxial Cyclic Loading and Unloading Tension

Table 1

Mechanical parameters of salt rock under monotonic loading and cyclic tension.

Specimen		Maximum load /kN	Tensile strength /MPa	Axial displacement /mm
Monotonic loading	d-1	6.10	0.96	0.74
	d-2	7.69	1.21	0.86
	d-3	6.57	1.03	0.82
	Average	6.79	1.07	0.81
Cyclic tension	f-1	6.76	1.06	1.50
	f-2	9.52	1.50	1.59
	f-3	6.38	1.00	1.73
	Average	7.55	1.19	1.60