Method and apparatus for mining and supporting the mine roof

Details Method and apparatus for mining and supporting the mine roof Method and apparatus for mining and supporting the mine roof

1974-10-07

1976-06-22

Taylor, Dennis L.

61 45D, E21D 1544

Patent

active

039642658

ABSTRACT:
A portable temporary roof support is arranged to be on a mining machine to a location beneath an unsupported portion of a mine roof. The portable temporary roof support has a plurality of piston cylinder devices that are connected by conduits to a source of fluid under pressure on the continuous mining machine. Fluid under pressure from the mining machine first extends the temporary roof support laterally to a location adjacent the entry ribs and thereafter extends the vertical portions of the temporary roof support into abutting relation with the mine roof and the mine floor to support the unsupported portion of the mine roof.

REFERENCES:
patent: 3115754 (1963-12-01), Joseph
patent: 3482407 (1969-12-01), Rieschel
patent: 3541926 (1970-11-01), Grebe
patent: 3621661 (1971-11-01), Allen
patent: 3678693 (1972-07-01), Markewitz et al.
patent: 3812680 (1974-05-01), Walbrohl

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