CROSS ROOF SUPPORTS

These supports are part of the longwall system and support the mine working mine roofs at the crossing of the face and the gateway – the most sensitive point of the longwall mining system, and the face ends.

They enable the mechanisation of the following works:

  • gateway roof support maintaining a constant support resistance
  • road heading building in the crossing area just before the face front to the outside of workings
  • moving the conveyor drive as face progresses
  • automatic advancing of roof supports
  • adjustment of the canopy to fit the variable shape of the roof in the crossing area
FAZOS-17/37-W FAZOS-18/38-S FAZOS-18/38 FAZOS-19/37 FAZOS-24,5/43
Height of the system 1.7-3.7 1.8-3.8  1.8-3.8 1.9-3.7  2.45-4.3 m
Operating range 1.9-3.6 2.0-3.7  2.0-3.7  2.0-3.6  2.65-4.2 m
Leg capacity preliminary 987 1040  1108 1388 1570 kN
operating  1080 1143  1212  1648 1767 kN
Support density 0.37 0.40 0.40  0.52 0.77 MN/m²
Stroke of advance  1.6 1.6  1.6 1.6  0.8 m
Advancing force outer unit 2×206 2×194  2×206 2×311  776 kN
central unit 2×458 2×430  2×458 2×643  1108 kN
drive 2×458 2×663  2×643 2×643  1108 kN
Supply pressure 25-30 25-30  32  32  32 MPa
Weight of the unit 34600 36700  43200  46410  43560 kg