1.4.5.3 Road Tunnel

Tunnel is mainly constructed in mountainous area and underground in urbanized areas. Since, the surrounding geology varies from hard rock to soft soil, the design of the tunnel is varied.

But in any case, a tunnel should have enough strength against underground pressure or dynamic forces caused by earthquakes.

In addition, in case of fire caused by a traffic accident, fireproof measures should also be considered.

KIOSK technologies

• 1.4.5.3.1 Fireproof segment effective for disaster prevention in shield tunnel
• 1.4.5.3.2 High performance sprayed concrete resilient for disasters