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31/03/2020 · With increasing coal mining depth, the effect of confining pressure on the mining process became more prominent. Based on the numerical model shown in Figure 11, the rock‐breaking model containing five holes under a confining pressure of 10 MPa .
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Schematic of cutting mechanism of roadheader: (a) horizontal swing; (b) lifting swing. According to the working principle, the swing speed of the cutting head can be obtained as follows: 1 2 sin ...
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Mining specialization gives 1 additional exp per Coal and Iron mined in this pack; 2 additional exp per Gold, Lapis, and Redstone; and 4 additional exp per Diamond and Emerald. Crafting specialization gives additional exp per unique item in the item to be made, a sword, with 2 unique parts, gives up to 1 bonus experience, whereas a piston, with 4 unique parts, is worth more (either 3 exp ...
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The roadheader is a machine for excavating rock in mining and civil construction projects. It is a hybrid machine, with better manoeuvrability than that of tunnel boring machines. It can cut rocks ...
