Images of シールドトンネル
Construction of Tachiaigawa Trunk Sewer Stormwater Outlet Channel World’s First Spiral Excavation of an Underground Tunnel Section Using Two MachinesOctober 27, 2020 Building the Groundwork for Our Lives and Protecting Communities H&V Shield Method, World’s First Spiral Excavation Using Double Shield at Underground Tunnel Construction of Tachiaigawa River Trunk Sewer Stormwater Outlet Channel October 27, 2020
⬆︎ Top