| 摘要 |
PROBLEM TO BE SOLVED: To provide a water cut-off structure of a large cross-section tunnel by which water cut-off performance is improved.SOLUTION: The water cut-off structure W1 of a large cross-section tunnel 1 constructed by using a plurality of tunnels T1 constructed side by side by a jacking method includes: a linear elastic sealing member 20 arranged on an outer surface 10' of one tunnel T1 of two adjacent tunnels T1, T1 along the jacking direction, and an elastic belt member 30 arranged on the outer surface 10' of the other tunnel T1. A front end of the elastic sealing member 20 is in contact with the elastic belt member 30. |
