Research Article

Experimental Study on Mechanical Properties and Acoustic Emission Characteristics of Water Bearing Sandstone under Stable Cyclic Loading and Unloading

Table 2

Test results of rock samples under uniaxial cyclic loading and unloading.

Test numberLower stress limit (MPa)Upper stress limit (MPa)Cycle number (time)Average cycle number (time)Strain of rock failure (10āˆ’3)Average strain of rock failure (10āˆ’3)

S-1-153523.87.177.402
S-1-257.48
S-1-337.42
S-1-457.55
S-1-547.39

S-2-1533.51919.66.726.812
S-2-2196.92
S-2-3236.84
S-2-4176.76
S-2-5206.82

S-3-15324338.46.416.494
S-3-2336.60
S-3-3376.57
S-3-4406.46
S-3-5396.43