Longwall Roof Support

Longwall roof support design is no exception and mostly continues to be a product of this philosophy.

Longwall roof support.

In seams with a longitudinal inclination of over 12 degrees the support collaborates with a conveyor stabilization a roof shield correction and dip lower section protection equipment. Cat longwall top coal caving ltcc roof supports allow m. Our powered roof supports come with the latest longwall automation systems and can be operated either locally remotely or semi automated. Major falls in longwall gateroads have become more and more uncommon as pillar design practices have improved largely through empirical design practices such as that.

Our longwall top coal caving ltcc roof supports allow mining of seams up to 10 m 32 8 ft. The longwall top coal caving ltcc roof support allows mining to a total seam height of more than 10 m 33 ft by using a longwall shearer to cut the bottom 2 8 3 0 m 9 2 9 8 ft and then caving the top coal behind the roof supports onto a rear afc. Joy powered roof supports for high capacity longwall applications are custom designed to meet your exacting cycle and operating requirements. This test program is the most extensive that has ever been.

Ratings up to 1 750 tonnes widths of 1 5 1 75 and 2 05 meters. As the face progresses the immediate roof above. 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. This type of longwall is in service for example at a mine in the hunter valley australia.

Adapted to the mining challenges faced by our customers today cat customized systems for longwall mining include hydraulic roof supports high horsepower shearers automated plow systems and armored face conveyors with intelligent drive technology controlled and supported by advanced longwall automation. A mining method in which very long rectangular blocks of coal are defined during the development stage of the mine and then extracted in a single continuous operation by an automated cutting head moving parallel to the coal face when the coal is cut the working area is protected by a movable powered roof support system. Roof supports for special applications.