Open-cut river-crossing tunnel constructed in cofferdam method in segmented mode

The utility model is applicable to the technical field of municipal engineering, and provides an open-cut river-crossing tunnel constructed by a cofferdam method in a segmented manner. The open-cut river-crossing tunnel comprises a conventional section tunnel, a post-cast section tunnel and a closure section tunnel, the closure section tunnel is located in the center of a river, and the conventional section tunnel and the post-cast section tunnel are sequentially arranged on the two side edges of the closure section tunnel at intervals; no deformation joint is arranged below the river of the open-cut river-crossing tunnel. According to the open-cut river-crossing tunnel, by arranging the post-cast section tunnel and the closure section tunnel, the waterproof problem of the river-crossing tunnel is solved. 本实用新型适用于市政工程技术领域，提供了一种围堰法分段施工的明挖越江隧道。该明挖越江隧道包括常规段隧道、后浇段隧道以及合龙段隧道，合龙段隧道位于江河的中心位置，常规段隧道以及后浇段隧道依次间隔地布置于合龙段隧道的两侧边；明挖越江隧道隧道在江河下方不设置任何变形缝。本实用新型的明挖越江隧道通过设置后浇段隧道以及合龙段隧道，解决了越江隧道的防水问题。