Deep and extensive excavations and city tunnels are becoming increasingly important in intra-urban areas

All non-mined tunnels need extensive excavations. DYWIDAG's geotechnical systems, like ground anchors, provide sufficient stability during the entire excavation life-cycle.  For wall-to-ceiling connections, reinforcing systems like DYWIDAG's rebar connector aid construction progress, while post-tensioning supports the construction of large span ceilings.

Secure and stable

Bar anchors, soil nails, and rock bolts secure slurry walls at tunnel entrances and stabilize rock faces and vaults in the main and access tunnels. Post-tensioning tendons support the construction of immersed tunnels—and the formation of wide ceilings in tunnels with high applying loads.

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