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Abstract: The Nishiya Tunnel on the through lines between the Sotetsu line and the JR line is a regular line double-track sectional tunnel 1,446 m long, leading from Nishiya Station to Hazawa Station (tentative name) in Yokohama City, Japan. This tunnel is being constructed using the SENS method (cast-in-place support system using a shield). SENS is a tunnel support system in which, concurrently with the...