Studies for Key Technologies of Pipe-jacking Construction and Related Engineering Projects

Through an engineering practice, the key techniques and improvement measures of pipe-jacking construction are presented in the paper, as well as the choice and points of its construction techniques. There are 2 construction techniques in pipe-jacking, open excavation and trenchless technology. The former is of rapid construction speed but it will influence the traffic to a certain extent. It is necessary to think about comprehensive factors of geological, construction and economic conditions and building target to choose certain construction technique. According to combined sewers construction in Pudong New Area, Shanghai, the key technique, the choice and the important points have been introduced by the author.