Firewall support for e.g. underground mining construction, has pillar with plate shaped base unit that is formed by ring plate, where outer diameter of ring plate is slightly larger than maximum diameter of armour arranged on ring plate

摘要

The firewall support (2) has a pillar (4) that is provided with a plate shaped base unit on a ridge side and/or a floor side. A conical armour (8) is fastened to a pillar-turned side of the base unit. The pillar supports a passage in mountains by the ridge-sided and/or floor-sided base unit provided with the armour. The base unit is formed by a ring plate (6), where outer diameter of the ring plate is 100 millimeters (mm) that is slightly larger than the maximum diameter of the armour arranged on the ring plate. The maximum diameter of the armour is 70 mm.