In view of a series of problems such as excessive residual foundation after foundation pit blasting in a crushing station of a mine and the collapse of foundation pit slope in the construction process,blasting method was adopted to eliminate risks and deal with toe rock.Based on the analysis of the failure mode of the foundation pit slope and the causes of the dumping type combined with the site geological structure,three feasible blasting technical schemes were proposed.Through the analysis and demonstration of the risk elimination scheme,it was determined to adopt the pre-splitting blasting method to carry out half bench blasting and cut off the dangerous rock on the west slope at the horizontal crack of the bench.Simultaneously,the foundation pit dumping platform was brought into the first blasting,and the toe rock was incorporated into the second stage blasting.In the construction process,the perforation equipment combined with construction conditions was reasonably selected,the construction efficiency was effectively improved,perforation cost was reduced,the measures of scheme 1 and scheme 2 were reasonably used to deal with the toe rock of southwest corner of foundation pit,the second stage slope drilling quantity was effectively reduced,and the construction efficiency was improved.The process adopted the air-decked charging technology,millisecond initiation technology and patent technology a charge structure for deep hole presplitting blasting'.In the case of not affecting the overall stability of the slope,the problem of under-excavation of the north slope in the construction process was solved.Through the fine construction,the risk was eliminated successfully,and the toe rock problem was solved,which created a good construction condition for the follow-up construction,shortened the construction period,and saved the construction investment.