Abstract: Smoothing blasting effect on slope of discontinuities up-righting to level, bedded slope and anti-dip slope was analyzed. It easily formed zig-zag slope after blasting of slope of discontinuities up-righting to level, and blasting effect is improved through more borehole and much less charge. It easily formed landslide after bedded slope blasting, and breakage effect of the reserved slope rock is depressed through reinforcement slope in pre-blasting and smoothing blasting of air-space charging. It easily formed over-excavation after blasting of anti-dip slope, and blasting effect is improved through depressing slope angle and blasting of air-space charging. For improving the slope blasting effect, it has some reference values.

Key words: Geological discontinuities of rock mass, Rock slope, Smoothing blasting, Improving measures