METHOD FOR PROVIDING STABILITY OF MINE WORKINGS IN HEAVING ROCKS

摘要

Method for providing stability of mine workings in heaving rocks, in which one forms in the base of the working a rock structure comprising of the lower damper and the upper bearing layers; that for in the base of the working blast-holes are drilled, with fan arrangement, and after explosion of camouflet charges one drills in destroyed rocks in the base of the working additional blast-holes with smaller depth in comparison to the main blast-holes through which after that polymer foam-forming solution is pumped in till beginning of formation of continuous layer at distance corresponding to the depth of additional blast-holes, with leaving a damper rock layer; then to the additions blast-holes one pumps in fastening solution.