Experiment and Analysis of Wedge Cutting Angle on Cutting Effect

Table 7

Statistical table of blasting block degree of wedge-shaped notch model test.

Cutting mode	Specimen no.	Fragment grade (mm)	<9.5	9.5∼19	19∼31.5	31.5∼53	53∼75	75∼90	>90
65° wedge cutting	I-5, II-5	Mass (kg)	0.572	1.253	2.759	3.126	4.512	0.861	2.522
		Cumulative mass (kg)	0.572	1.825	4.584	7.710	12.222	13.083	15.605
		Mass percentage (%)	3.666	8.029	17.680	20.032	28.914	5.517	16.162
		Cumulative mass percentage (%)	3.666	11.695	29.375	49.407	78.321	83.838	100.000
69° wedge cutting	I-6, II-6	Mass (kg)	0.249	1.659	2.552	3.442	4.280	1.125	2.891
		Cumulative mass (kg)	0.249	1.908	4.460	7.902	12.182	13.307	16.198
		Mass percentage (%)	1.537	10.242	15.755	21.250	26.423	6.945	17.848
		Cumulative mass percentage (%)	1.537	11.779	27.534	48.784	75.207	82.152	100.000
73° wedge cutting	I-7, II-7	Mass (kg)	0.407	1.056	1.912	2.861	4.615	1.236	3.119
		Cumulative mass (kg)	0.407	1.463	3.375	6.236	10.851	12.087	15.206
		Mass percentage (%)	2.677	6.944	12.574	18.815	30.350	8.128	20.512
		Cumulative mass percentage (%)	2.677	9.621	22.195	41.010	71.360	79.488	100.000
77° wedge cutting	I-8, II-8	Mass (kg)	0.223	1.592	1.326	1.513	1.876	2.131	5.816
		Cumulative mass (kg)	0.223	1.815	3.141	4.654	6.530	8.661	14.477
		Mass percentage (%)	1.540	10.997	9.159	10.451	12.958	14.720	40.175
		Cumulative mass percentage (%)	1.540	12.537	21.696	32.147	45.105	59.825	100.000
81° wedge cutting	I-9, II-9	Mass (kg)	0.000	0.000	0.000	0.000	0.000	0.000	0.000
		Cumulative mass (kg)	0.000	0.000	0.000	0.000	0.000	0.000	0.000
		Mass percentage (%)	0.000	0.000	0.000	0.000	0.000	0.000	0.000
		Cumulative mass percentage (%)	0.000	0.000	0.000	0.000	0.000	0.000	0.000