CHINA MINE ENGINEERING

An open-pit limestone mine is located in the affected area of karst cave and karst, the blasting process in stope has a great influence on the slope stability of this section. Do blasting line in upper +145m, the blasting vibration to the vibration of the user data collected waveform wave velocity diagram and use Steve sadove formula fitting regression equation, according to the law of blasting vibration propagation in line from the results in the region to ensure the slope is not affected by vibration, seismic fortification intensity is not more than 7 °, and now the demolition of the regions largest control to control within 360kg, total quantity control in less than 7000kg, guidance in controlled blasting problems need attention in the future and the safety measures.