Abstract: To solve the hidden safe trouble of No.5ore conveyor belt upper slope,the investigation and analysis of lithologic composition and rock mass structure has been carried on.According to investigation and analysis results of lithologic composition and rock mass structure type,it was determined to the failure mode and harm of whole slope and Bench Slope.Through the calculation and analysis of slope stability,the stability state was determined.By comprehensive consideration influence of such factors as slope failure mode,Spatial Form,service life,construction period,the final slope control plans will be comprehensive reinforcement measures with 12m whole-length cohesive anchor bolt and SNS actively flexible defend net.