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【Example of Face Water Control Work】 Sagawa District Tunnel

Introduction of a case where a transparent type of Arch Drain was used to implement extensive leakage measures in the tunnel of National Route 33!

This is an introduction to a case of leak prevention work in the Sagawa Tunnel in Sagawa Town, Takaoka District, Kochi Prefecture, using "face drainage works." There was a widespread occurrence of leaks within the tunnel, and there was a request to ensure that the flow of water could be visualized even after construction. By using a transparent type of arch drain, extensive leak prevention measures were implemented in the tunnel on National Route 33, making it easier to visualize the flow of water over a wide area, and allowing for proper drainage conditions to be confirmed even after construction. [Challenges] - Widespread leaks were occurring within the tunnel. - There was a request to ensure that the flow of water could be visualized even after construction. *For more details, please download the PDF or feel free to contact us.

Related Link - https://www.n-drain.co.jp/column/content/1403

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【Results】 ■ The flow of water over a wide area has become easier to see. ■ It has become possible to confirm appropriate drainage conditions even after construction. ■ Even on the heavily trafficked National Route 33, the aesthetic appeal has been maintained more than a year after construction. ■ Excellent results have been achieved in terms of both durability and functionality. *For more details, please download the PDF or feel free to contact us.

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