Abstract: The open-pit slopes in Zijinshan Gold-Copper Mine have the characteristics of various heights, steep slope angles, and high degrees of weathering. Maintaining the stability of these slopes during the blasting is one of the aspects in mining operation that needs to pay special attention. In order to reach the optimum effect of the pre-split-ballasting, the blasting parameters and their affecting factors are systematically studied in this paper. The blasting results are satisfactory.

Key words: Final Mining Slopes, Blasting Parameters, Pre-Split Blasting, Buffer Blasting