Influence of Cyclic Impact Loading and Axial Stress on Dynamic Mechanical Properties of Burst-Prone Coal

Table 1

The mechanical and physical properties of coal under a quasistatic condition.

Coal source	Density (g·cm^−3	Uniaxial compressive strength (MPa)	Elastic modulus (GPa)	Poisson’s ratio	Cohesion (MPa)	Friction angle (°)
Qianqiu coal mine (prone)	1.32	18.16	4.85	0.38	12.84	25.41
Zhaogezhuang coal mine (resistant)	1.34	10.78	2.21	0.27	11.02	17.05