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Abstract: In the Kansai region in Japan, parallel bored tunnels with large cross-section have been constructed in very close proximity to each other for a long distance by earth pressure balance type of shield tunneling. The lining design of the first tunnel is considered an impact of a following parallel tunnel construction in close proximity. An alignment of bored tunnels has straight sections with...
Abstract: In the Yamatogawa Route in the urban area of Kansai, Japan, parallel shield tunnels with a large cross-section are constructed very closely over a long distance. To solve the technical problems involved in this project, we designed the tunnels using an original method that independently defined the design evaluation of the influence of the shield tunnel excavation on the neighboring tunnel. In...