| 摘要 |
FIELD: mining.SUBSTANCE: method comprises drilling parallel rows of wells or holes, placing in them of explosive charges in a staggered manner, distributed with filled gaps. The gap length is equal to the length of the charge. Simultaneous camouflage blasting of explosive charges with the central initiation. Filling the voids left after the explosion with the concrete solution. For forming the bridging array the radius of the explosive charge is defined, the length of the explosive charge. In the upper part at the contact the aquiferous stratum - an array form the locking charge. The gaps are filled with bridging material which is formed with the following composition: in aggressive non-pressure environments - bitumen or tar; in non-corrosive pressure environments - cement; in aggressive pressure environments - bitumen or tar, the radius of the resulting bridged area of crumpling from the charge is additionally determined, the radius of the formed bridged area in the gaps between charges, the distance between drilled wells or holes in the row, the length of the locking charge and radius of the bridged area of cracks.EFFECT: method enables to improve the efficiency and safety of work.3 cl, 3 dwg |
