Friction pillar of simple structure, convenient operation and maintenance, and metal roof beam combination, the mining face can be used for less than 25 ° inclination, the adoption of a certain safety measures, also can be used in the mining face of 25 ° to 30 °. Pillar for resistance can quickly achieve early after work, play a role of support for the roof as early as possible.
Type |
Highly (mm) |
Working Resistance (KN) |
Weight |
Living under the column drop-off |
minimum resistane at the beginning of the end resistane |
Maxi |
MW800/300 | 800 | 572 | 250 | 300 | 32 | 200 |
MW1000/325 | 1000 | 672 | 250 | 325 | 35 | 300 |
MW1200/350 | 1200 | 772 | 250 | 350 | 38.5 | 400 |
MW1400/350 | 1400 | 872 | 250 | 350 | 42 | 400 |
MW1700/350 | 1700 | 1022 | 250 | 350 | 47 | 400 |
MW2000/350 | 2000 | 1172 | 250 | 350 | 52 | 400 |
MW2300/300 | 2300 | 1322 | 250 | 350 | 57 | 400 |
MW2600/300 | 2600 | 1502 | 200 | 300 | 62 | 400 |
MW2900/300 | 2900 | 1652 | 200 | 300 | 68 | 400 |
MW3150/250(non-standard) | 3450 | 1822 | 200 | 250 | 72 | 400 |
MW3500/250(non-standard) | 3500 | 1972 | 100 | 150 | 80 | 400 |
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