| 摘要 |
The tunnel (1) is provided with devices for separating it into at least two successive, longitudinally extending segments, which are for thermic insulation of a fire source in one of them. The separation devices (12) comprise a series of strip-shaped components, which when the tunnel is normally used are rolled up near the tunnel roof (4). In the event of a calamity, the components can be unrolled to form a virtually closed screen, which extends crossways to the longitudinal direction of the tunnel. The strips are at least mainly produced from polymers, particularly plastici with relatively high thermic resistance, or rubber. |
