Study on blasting safety technology applied in Karst limestone mine

摘要

Combines the geology features of Karst mine, the effect of Karst on stress wave propagation in rock, rock crushing and blasting crater formed were analyzed, Different forms of Hole-by-Hole detonation network was designed, Blasting network and blasting parameters were optimized, Hole-by-Hole detonation was tested in the field, Tests showed that hole-by-hole blasting technology is an advanced blasting technology to achieve detonating between two adjacent holes, In Karst mine hole-by-hole blasting technology enables make blasting vibration velocity decreased by 20%, Explosives consumption decreased by 11%, can effectively prevent misfire, greatly improving the level of safety in mines minin g.