Urban tunneling projects necessitate complex construction methods to meet ecological, ecopolitical and economic demands. Tunnels are becoming longer, deeper and larger, and require minimal disturbance to the public and to the surrounding utilities, structures and the environment. This book provides comprehensive and current guidance on the design and construction of shield tunnels from the basics to detailed technical requirements. It contains numerous recent case studies, including the large diameter Shanghai Yangtze river tunnel and Qianjiang river tunnel, together with smaller diameter projects such as underground railways and maglev tunnels.