Abstract:Through the analysis on the advantages and disadvantages of the common anti-slide pile removal method, combined with an engineering case of the anti-slide pile removal compensation of trunk sewer under External Qinhuai River in the water environmental treatment project in Nanjing, the design principle, design scheme and construction method of pile breaking compensation are introduced in detail. The advantages of pile breaking construction method are more obvious. The pipe-jacking machine is used to directly break the piles, is simple and direct without the other auxiliary measures, and has little influence on the external environment, which can be referred for the similar projects in the urban areas in the future.