METHOD FOR PROTECTION OF MINE WORKING

摘要

A method for protection of mine working includes leveling of stress condition of rock massif in width of the working through formation of slot in the floor of working till coming to zone of reference pressure. The slot in the floor of working is formed in V-like form in cross section with orientation of the top to inside of the massif at axis of maximum shifts. The distance between the side walls of the slot in the plane of the floor of working one maintains as equal to 0.8-1.1 of the value of the predicted heave, and the normal that is drawn from the top of the slot to plane of the floor of working – 0.45-0.55 of the width of the working.