Method for forming escaping-rescuing transverse channel in road tunnel

Abstract

The invention relates to a method for forming an escaping-rescuing transverse channel in a road tunnel, and belongs to the technical field of road engineering. Specific to medium, long and extra-long tunnels with overlarge single-hole or double-hole distances or overlarge altitude differences on roads, an escaping-rescuing transverse channel straight to the ground is formed according to the relationships between the tunnel position and peripheral mountains under the situation that a double-hole transverse channel cannot be formed. The transverse channel comprises a main hole intersection, a channel hole body segment and a ground outlet, wherein the channel hole segment can be set in a climbing type, a flat slope type and a downhill type; the ground outlet is connected with a traffic instrument or flat ground according to the ground outlet appearance and a building situation; an isolation fence needs to be arranged at the outlet. Compared with the conventional disaster prevention and rescue scheme of forming a transverse channel between two holes of a separate tunnel and forming an emergency parking lot or a parallel adit, a bomb shelter and the like in a single-hole tunnel, the escaping-rescuing transverse channel setting method has the advantages of adaptation to local conditions, flexible arrangement, realization of rapid escape or rescue of personnel trapped in the tunnel to a safety belt outside the holes through the transverse channel.

Description

technical field [0001] The invention belongs to the technical field of highway engineering, and in particular relates to a method for setting a highway tunnel escape and rescue cross passage. Background technique [0002] "Code for Design of Highway Tunnels" (JTG_D70-2004) stipulates that cross passages should be set up between the up and down separate independent double-hole road tunnels: the distance between pedestrian cross passages can be 250m, and should not be greater than 500m; the distance between vehicle cross passages Desirable 750m, but not greater than 1000m. That is to say, it can be understood that medium, long, and extra-long tunnels should consider setting up disaster prevention and rescue escape channels. [0003] In recent years, with the development of society and economy, some road tunnels have been rebuilt and expanded due to the needs of the operation or use phase (such as increased traffic volume). A common one; but then there is the problem of disas...

AI Technical Summary

Problems solved by technology

[0003] In recent years, with the development of society and economy, some road tunnels have been rebuilt and expanded due to the needs of the operation or use phase (such as increased traffic volume). A common one; but then there is the problem of disaster prevention and rescue between the new extension tunnel and the original section (not necessarily the corresponding section of the tunnel), that is, the problem of setting up cross passages - the single hole of the newly added section of the tunnel may be affected Due to the following factors, it is difficult to lay out the rescue passages in full reference to the separated and double-width newly-built tunnels: the lines of the new road and the existing road are not parallel in plane (or even have a large intersection angle), or the distance is far away; There is a big difference in height between the old and new highways; the old road structures corresponding to the new tunnels are not necessarily or not completely tunnels, etc.

[0004] On the other hand, in general, for independent single-hole tunnels, it is not considered to set up transverse passages as escape and rescue passages. However, with the development of society and economy, the issue of disaster prevention and rescue in tunnels has become more and more important.

Images