Research on theory on directional fracture controlled blasting

Base on the fact that the technical parameters of the direction fracture controlled blasting differ from those of the smooth-wall blasting,the theory and loaded constitution of the direction fracture controlled blasting are researched.In the paper,the mechanism of creating guide fracture of the cumulative blasting and the lancing cartridge blasting is analyzed.The allocating viewpoint of the blasting energy change with blasting is proposed.By analyses,the paper puts forward that the essential of directional fracture controlled blasting is the control of dynamite energy,and the new type of dynamite configuration that can increase dynamite energy-using ratio and explosion energy density in the fracture direction is the main research direction,