Abstract An EPB shield with an extra-large diameter of 14.27m was used for the first time in China in the construction of the Shanghai Bund Channel Project. According to the engineering characteristics, this paper: presents the technical problems concerning the face stability of the extra-large section, excavation under shallow cover, crossing of an adjacent operating metro tunnel and historical buildings; describes in detail the specific design, key construction techniques, and protective measures for the structures; analyzes the impacts on the surrounding environment induced by the extra-large diameter EPB shield driving; and points out the pros and cons of the extra-large diameter EPB shield in comparison to the conventional shield and extra-large diameter slurry shield. In conjunction with the development trends of urban transportation projects in China, the application prospects and directions for the development of extra-large diameter EPB shields in central urban areas are presented.
Abstract：
An EPB shield with an extra-large diameter of 14.27m was used for the first time in China in the construction of the Shanghai Bund Channel Project. According to the engineering characteristics, this paper: presents the technical problems concerning the face stability of the extra-large section, excavation under shallow cover, crossing of an adjacent operating metro tunnel and historical buildings; describes in detail the specific design, key construction techniques, and protective measures for the structures; analyzes the impacts on the surrounding environment induced by the extra-large diameter EPB shield driving; and points out the pros and cons of the extra-large diameter EPB shield in comparison to the conventional shield and extra-large diameter slurry shield. In conjunction with the development trends of urban transportation projects in China, the application prospects and directions for the development of extra-large diameter EPB shields in central urban areas are presented.
.Discussion of the Application of Extra-Large Diameter EPB Shields
to Road Tunnels in Central Urban Areas[J] MODERN TUNNELLING TECHNOLOGY, 2013,V50(3): 1-7
2013, Vol. 50 