Abstract: Based on the mass innovative bunch-holes equivalent spherical cartridge blasting technology and the variable resistance lines of bunch-holes blasting, the high efficiency bunch-hole mass mining method is developed. This method integrates the advantages of cartridge blasting and deep-hole blasting. The drilling chamber are arranged to be tunnels to realize the continuous mass mining with high level blasting and the overall regional caving in high efficiency and low cost. It has a wide application in the mine safety management of mined-out area, high stages continuous mining, mass mining during open pit transferring to underground mining, etc.

Key words: Bunch-holes, Mass mining, Development and application