Experimental Study on Mechanical Properties and Cracking Behaviors of T-Shaped Flaw-Contained Rock-like Materials Under Cyclic Loading

Geotechnical hazards such as debris flows, rock falls in slopes, collapse, and rockburst underground mining or caverns are tightly correlated to the mechanical behavior of natural mass stability. Strength failure mode governed by presented fissures. In this paper, samples containing T-shaped fissures with different geometry were prepared rock-like materials tested under varying uniaxial cyclic loading compression. The effect strain rate frequency on strength studied, cross working conditions was observed. results show that function minor not completely negative, fissure a major inclination angles trend increasing included angle between Moreover, cracked increased increase frequency, larger fissures, more sensitive sample change but without noticeable linear correlation relationship addition, existence had significant impact sample, same compression load equivalent.