Rockburst Characteristics and Mechanisms during Steeply Inclined Thin Veins Mining: A Case Study in Zhazixi Antimony Mine, China

Table 2

Physical and mechanical properties of rocks.

Lithology	Density (g/cm^3)	UCS (MPa)	Tensile strength (Mpa)	Poisson ratio	Cohesion (MPa)	Young’s modulus (GPa)	Internal friction angle (°)
Slate	2.81	71.11	4.29	0.23	9	17.23	36.48
Tuffaceous slate	2.90	82.46	5.91	0.32	10.03	25.32	40.23
Quartz sandstone	2.75	65.17	7.45	0.20	17.32	23.65	45.32
Tuffaceous sandstone	2.70	76.12	6.06	0.26	11.21	35.95	41.94
Massive stibnite	3.84	114.34	4.57	0.21	11.84	58.23	49.80
Disseminated stibnite	3.12	93.15	5.54	0.25	9.86	43.12	50.61