Theoretical Calculation and Application of Ire - splitting Blasting Parameters
The attenuation law of stress field formed by explosion stress wave in damage rock and detonation gas and the rock blasting mechanism are the basis for the computation of pre - splitting blasting parameters. Based on the interrelationship between the initial shock pressures on borehole wall and the rock strength, the value ranges of decoupling coefficient for pre - splitting blasting was obtained. Then, the static stress field formed by detonation gas in damage rock was analyzed, the initial cracked area formed by pre - splitting blasting in damage rock was studied and the space of boreholes was obtained. Finally, the theoretical study was validated in Zijinshan open pit mine.
Pre - splitting blastingDecoupling coefficientSpace of boreholesBlasting parameters
NETL
NSTL
万方数据
维普
