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Ranged from 18.91 m optimal production drift spacing ranged m level within the 20 m. The crossing Iron Mine is 60 m The The crossing space on the -500 from 18.91 m to east of Chengchaospace on the -500 m.level within the east of Chengchao Iron integral m. The of your space needs to be spacing. multiple crossing space really should be anMine is 60multiplecrossingproduction driftan integralThe proof the production drift spacing. The production the spacing was set to theory [31] for the duction drift spacing was set to 20 m based ondrift ellipsoid drawing 20 m determined by enellipsoid the production drift spacing on the upper and reduce sublevels formed a and positive that drawing theory [31] to make sure that the production drift spacing on the upper dialower layout. In distinct, the optimal structure parameters in the stope were 17.five m mond sublevels formed a diamond layout. In particular, the optimal structure parameters from the stope had been and 20 m of production drift spacing. sublevel height17.5 m of sublevel height and 20 m of production drift spacing.Figure 7. Prime -500 m to -570 m. Figure 7. Leading view of 3D visual model of No. II, III, and IV ore bodies from -500 m to -570 m.3.two. Optimization on the Caving Step three.2. Optimization with the Caving Step three.2.1. Simulation Scheme three.2.1. Simulation Scheme The interval from the caved ore of the stope was 3.0 m, as well as the caving step was L-Glutathione reduced Inhibitor around 4.0 m. For the simulation study, nine structural parameters, namely, 3.0, 3.five, 4.0, four.5, five.0, 5.5, 6.0, 6.five, and 7.0 m, have been chosen to identify the optimal caving step. The drawing model parameters are shown in Table five, along with the micromechanical parameters had been precisely the same as in Table 1.Table 5. Macro model simulation parameter table. Analog Number B1 B2 B3 B4 B5 B6 B7 B8 B9 Ore Height/m 33 33 33 33 33 33 33 33 33 Width/m 20 20 20 20 20 20 20 20 20 Caving Step/m 3.0 three.five four.0 four.5 five.0 5.5 six.0 six.5 7.0 Existing Cutoff Grade/ 18 18 18 18 18 18 18 18Figure eight shows the diagram of a single model of 17.5 m 20 m. The actual drawing height was the sum from the sublevel and ridge heights formed by means of sublevel blasting. Just after the calculations, the actual drawing height was set to 33 m. Figure 9 shows the initial diagram with the single model. The production drift direction is definitely the x-axis, the vertical production drift may be the y-axis, and also the path on the model height is definitely the z-axis. The yellow Selamectin MedChemExpress particles would be the overburden, the blue particles will be the frontal waste rock, and the red particles will be the ore. Beneath the action with the initial gravity field, the ore and rock flow from the lower ore discharge port to type recovery mining and cease when the cutoff grade is reached.B8 BMetals 2021, 11,33206.5 7.18Figure 8 shows the diagram of a single model of 17.5 m 20 m. The actual drawing 9 of 16 height was the sum in the sublevel and ridge heights formed by means of sublevel blasting. After the calculations, the actual drawing height was set to 33 m.Figure 8. Single model design.Figure 9 shows the initial diagram in the single model. The production drift path could be the x-axis, the vertical production drift will be the y-axis, and also the path in the model height may be the z-axis. The yellow particles would be the overburden, the blue particles would be the frontal waste rock, and the red particles are the ore. Under the action of the initial gravity field, the ore and rock flow from the reduced ore discharge port to kind recovery mining and cease when the cutoff grade is reached.Figure eight. Single model design and style.Figure 9 shows the i.

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Author: haoyuan2014