Research Article

Impacts of Cyclic Loading and Unloading Rates on Acoustic Emission Evolution and Felicity Effect of Instable Rock Mass

Figure 8

Changes of rock AE rings with the monitoring time under the uniaxial cyclic loading and unloading compression (Lr = 0.5 kN/s, Ur = 0.5 kN/s∼4.0 kN/s).