Stability Analysis and Confidence Level Evaluation of Backfill Mining under High and Steep Rock Slopes

Table 2

Uniaxial compressive strength test results.

Specimen number	Diameter (mm)	Height (mm)	Peak load (kN)	Elastic modulus (GPa)	Poisson’s ratio	Uniaxial compressive strength (MPa)
DXD-3	50.25	108.97	38.22	10.38	0.41	19.3
DXD-4	50.28	110.97	52.71	5.82	0.26	26.5
DXD-5	50.14	103.25	45.83	8.32	0.24	23.3
DXK-3	50.21	101.90	114.26	36.12	0.25	57.7
DXK-4	50.22	103.15	128.23	27.94	0.30	64.7
DXK-5	50.19	101.48	118.58	30.64	0.22	62.5