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Abstract: The Nishiya Tunnel on the Sotetsu - JR Through Line is the first project to be executed in an urban area with the “extruded concrete lining system with shield” (hereafter SENS). This is the third case that the SENS has been used; previously, it had been used to construct the Sanbongihara Tunnel on the Tohoku Shinkansen (bullet train) Line and the Tsugaru-Yomogita Tunnel on the Hokkaido...