friction prop introduction

Friction pillar supporting force generated by the friction of yielding pillars. It with metal articulated roof beam with a single support, to maintain face control roof top area. Pillar is suitable for the bottom friction is hard, no obvious impact ground pressure, dip Angle of coal seam is less than 25 ° slowly inclined thin and medium thick coal seam working face, take security measures, can also be used for 25 ° to 35 ° mining face.
Friction pillar lock, live column and column by column tube of three parts.
Pillar has high working resistance and friction can drop-off big wait for a characteristic, pillar can achieve early work soon after resistance, play a role of support for the roof as early as possible, but also can be used for roof subsidence amount is larger, with periodic weighting of mining face

friction prop parameter

model height(mm) (Working resistance KN) weight Living under the column drop-off first resistance final resistance

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

friction prop picture

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