Abstract: Residential areas, factories and other facilities are often distributed downstream of the dump site.Once the landslide occurs,the consequences will be serious.In order to accurately predict the extent and scope of impact of the dump landslide,by analyzing the risk source terms of the dump landslide,the norm determination method,energy equation method,engineering analogy method and propagation formula method are used to affect the impact range of a dump yard after a landslide After calculation,it is concluded that the length of the maximum impact area after a landslide of a dump is 208 m,and the impact degree analysis is carried out,which has a certain guiding effect on the prevention and supervision of the dump.

Key words: waste dump,landslide,risk,scope of influence