COMPENSATION POWERED SUPPORT OF LONGWALL END SECTIONS Russian patent published in 1996 - IPC

FIELD: support of long stopes by powered support. SUBSTANCE: compensation powered support of longwall end section has central base connected by hydraulic props and guard with central roofing, side roofing with hydraulic props and guards connected by means of control hydraulic jacks and the face and caved ends with groove and tongue joints of central roofing, and side bases connected by control hydraulic jacks in directions of transverse axis to groove and tongue joints of central base. Side bases are connected by advance hydraulic jacks with catches to the guide beam. Catches of central base are connected with catches of side bases by additional control hydraulic jacks. EFFECT: higher efficiency. 4 dwg