Roof Supports Mining

Strata worldwide was founded on its line of engineered secondary roof supports for underground coal mining.

Roof supports mining.

Intrinsic roof support an empirically based software package analysis of roof bolt systems arbs has been developed to assist in design of roof bolt systems in coal mines. The can is a yieldable secondary roof support made from a confined core of cementitious composite encased in a cylindrical steel canister which resembles a can. Our longwall top coal caving ltcc roof supports allow mining of seams up to 10 m 32 8 ft. Today this prop is one of eleven different standing support systems strata offers.

High strength steels automated welding for increased weld integrity elimination of stress prone transverse welds. Following a conventional cut with a shearer to about 3 m 9 8 ft the roof supports move forward and allow the caving coal to fall via controllable caving shields onto a second conveyor mounted gob side. The order from the roof support manufacturer zmj zhengzhou coal mining machinery group co ltd has a value of approximately 2 7 million and in addition to the main hydraulic control system once again includes all safety relevant auxiliary valves. Originally introduced in 1993 the strata propsetter support system remains one of strata s top selling support props through out the world.

Roof supports for special applications. The structural design of the powered roof supports is respected throughout the mining industry for attention to key fabrication details.