COMBINATION METAL MINE SUPPORT Russian patent published in 1997 - IPC

FIELD: mining industry. SUBSTANCE: this is intended for supporting underground workings in flat seams of thin and medium capacity with geological disturbances by power support. Combination power support has upper beam and base hydraulically interconnected by hydraulic props. Located between bases of each pair is double-action hydraulic ram 35 connected with longwall conveyer. Setting support 40 is connected with bases and upper beams of coupled sections. Secured to apron 26 is cap 45 which is put on prop of support 40 and it protects this support from gobbing. Controllable cutting face apron can be connected with upper beams of coupled sections by control hydraulic rams and connecting members located at joint between coupled sections. EFFECT: high efficiency. 1 cl, 8 dwg