Rock Mechanics Characteristics Test and Optimization of High-Efficiency Mining in Dajishan Tungsten Mine

Table 3

Angle-moulded shear specimen parameters and test results.

Rock classification	Angle	Sample number	Height (mm)	Diameter (mm)	Peak stress (MPa)
Surrounding rock	30°	WJ-1	100.40	48.94	53.506
		WJ-2	99.60	49.00	55.450
		WJ-3	100.30	48.96	60.417
		WJ-4	100.06	48.94	53.048
	60°	WJ-5	100.90	49.02	66.219
		WJ-6	99.62	48.90	52.957
		WJ-7	98.64	48.98	25.293
		WJ-8	100.10	49.00	54.819
	45°	WJ-9	100.00	49.00	42.0356
		WJ-10	99.44	48.94	91.858
		WJ-11	97.02	48.84	105.659
		WJ-12	99.40	48.92	38.860
Ore rock	30°	KJ-1	99.40	49.40	89.781
		KJ-2	99.00	48.80	60.732
		KJ-3	99.60	48.74	57.272
		KJ-4	100.02	48.84	79.796
	60°	KJ-5	99.40	48.70	40.234
		KJ-6	99.52	48.66	58.545
		KJ-7	100.00	49.62	69.944
		KJ-8	100.02	48.60	52.173
	45°	KJ-9	99.00	48.84	87.441
		KJ-10	100.82	48.90	100.489
		KJ-11	99.40	48.84	91.471
		KJ-12	100.80	48.94	74.901