APPARATUS FOR BLAST TREATMENT OF CORNICE-LIKE LEDGES AT THE WALLS OF UNDERGROUND RESERVOIRS IN ROCK-SALT FORMATIONS

摘要

An apparatus for blast treatment of cornice-like ledges at the walls of underground reservoirs in rock-salt formations includes the carrier and the charge of explosion substance, this is placed in the lower part of the carrier, and the unit for initiation of explosion, this is galvanically connected to the charge of explosive substance; at that the carrier is equipped with a structure arranged as an umbrella, this includes ends of the needles hinged to the carrier, the charge of the explosive substance fixed at the end of each needle, and the structure is equipped with a rope connected to the free ends of the needles and with tension mechanism placed at the upper part of the carrier and intended for closing and opening the umbrella.