SELF-SUPPORTED AIR PIPE FOR BLASTING AND METHOD OF ROCKY GROUND EXPLOSION WITH ITS APPLICATION

摘要

FIELD: mining.;SUBSTANCE: air pipe comprises air balloon, a pair of support lean-tos and inlet hole. Diametre of air balloon is less than diametre of explosion well. Bearing lean-tos diverge from external side of air balloon symmetrically at a certain width. Inlet hole is arranged on top of air balloon for air supply into air balloon. Overall diametre of air pipe is less than diametre of explosion well, air pipe is inserted into explosion well and rests against wall of explosion well.;EFFECT: improved efficiency of blasting due to alignment of air balloon relative to well walls in the whole of its distance.;18 cl, 18 dwg