1550 Table 3 –Physico-mechanical properties and machine cutting performance of continuous miner S.No. UCS (MPa) BTS (MPa) RQD (%) Power (kW) Power (HP) W (tonne) MICR (tonne/hr) 1 16.2 1.9 25 372 500 74.8 788.8 2 22.6 2.4 21 372 500 74.8 598.4 3 24.1 2.7 28 372 500 74.8 544 4 24.7 2.8 24 372 500 74.8 462.4 5 25.1 3.2 28 372 500 74.8 462.4 6 21.8 2.3 25 372 500 74.8 666.4 7 16.2 1.9 21 372 500 74.8 788.8 8 24.7 3.2 24 372 500 74.8 544 9 21.8 2.3 21 372 500 74.8 652.8 10 20.4 2.1 25 372 500 74.8 680 11 23.9 2.6 24 372 500 74.8 571.2 12 23.9 3.2 24 372 500 74.8 571.2 13 20.4 2.1 21 372 500 74.8 707.2 14 16.2 1.9 25 372 500 74.8 775.2 15 20.4 2.7 25 372 500 74.8 666.4 16 20.4 1.9 28 372 500 74.8 666.4 17 20.4 2.1 21 372 500 74.8 680 18 15.7 2.4 24 372 500 74.8 802.4 19 20.4 2.1 25 372 500 74.8 666.4 Kindly note: UCS is uniaxial compressive strength(MPa); BTS is Brazilian tensile strength (MPa); MICR is measured instantaneous cutting rates (tonne/hr); The instantaneous cutting rates of CAT-CM345 are calculated using the prediction equations of Bilgin (BICR), Ghering (GICR) and Cooper (CICR) and are presented with the Measured Instantaneous Cutting rates in Table 4. The value of RPI and RMCI are also presented in the Table. All the predicted instantaneous cutting rates are in similar trend with MICR (Figure 2). A summary of the influential parameters used in these indices are enumerated.
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