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Abstract: Yamatogawa-route of Hanshin Expressway is 9.9 km long and the most of them are cut-and-cover tunnels. As the slab and wall of the cut and cover tunnel is generally deep, many countermeasures were carried out to prevent thermal cracking and followed water leakage. Nevertheless, penetrated thermal cracks were observed to the concrete slabs and walls. The leaked coming-in water would make bad...