Study on Protection Layer Blasting Excavation and Reinforce of Slope at One Converter Station

Natural rock easily produced partial incompact zone in blasting,which reduced its self-stable ability and even caused the landslides and road collapses.Based on the combination of presplitting blasting and deep hole millisecond blasting technology,the construction method that the protechtion layer is reserved on the location of the road is adopted and the reasonable blasting parameters are selected.Stability of the surface on slope has been ensured by jetting concrete,which provided the basis for blasting excavation of the similar slopes.