| 摘要 |
<p>The present invention relates to a tunnel (1) including safety structures for evacuating persons, said tunnel comprises a hanging passage or drift (2), comprising a plurality of adjoining modular elements (3), connected to and suspended from the tunnel vault by connecting and suspending tie-rods (8), the modular elements including elements having a central walking-on portion (4) and side walls (5), the end portions of which are tightly engaged with the tunnel vault (6), the tunnel further comprising, at preset spacings, a plurality of controlled access arrangements (30), for communicating the tunnel floor and the hanging or suspended drift.</p> |
