Longwall Roof Support

Our powered roof supports come with the latest longwall automation systems and can be operated either locally remotely or semi automated.

Longwall roof support.

Joy powered roof supports for high capacity longwall applications are custom designed to meet your exacting cycle and operating requirements. 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. Longwall roof support design is no exception and mostly continues to be a product of this philosophy. This test program is the most extensive that has ever been.

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. 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. Longwall has better resource recovery about 80 compared with about 60 for room and pillar method fewer roof support consumables are needed higher volume coal clearance systems minimal manual handling and safety of the miners is enhanced by the fact that they are always under the hydraulic roof supports when they are extracting coal.

Caterpillar has extensive experience in the design of roof supports for specific mining conditions. Nepean longwall and bmj have supplied fully tested roof supports to cook colliery appin west mine and oaky north mine over the past few years and nepean is currently in the process of completing a roof support test program for anglo s moranbah north s mine in queensland. As the face progresses the immediate roof above. This type of longwall is in service for example at a mine in the hunter valley australia.

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. 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.