CS255149B1 - A system of technological tunnels for the construction of the upper vault of a single-nave metro station - Google Patents

Abstract

The technological tunnel system is built from reinforced driven tunnels. It consists of a pair of mining tunnels driven along the face of the concreted arch supports. The mining tunnels are interconnected by means of ceiling bends with at least two transverse tunnels, the base of which is the lower contour of the upper arch of the station being built. At least one transverse tunnel is connected to the terrain in the culmination area by means of a supply borehole. Each mining tunnel is preferably connected to the corresponding track tunnel in front of and/or behind the station being built, both in the route and in the vertical alignment.

Description

The invention relates to a technology gallery system for the construction of the upper vault of a single-nave excavated metro station, intended for the transport of turbines, building materials and control systems and for air supply.

Existing technologies for the construction of the upper vault of a single-nave subway station allow supply only through track tunnels and temporarily built access tables, which transport prefabricated parts of the upper vault and the appropriate mechanisms necessary for their fitting and excavation. Expensive fitting mechanisms are detachable to be transported through the line tunnel and are demandingly assembled on site. All the rubanir.y transport, but also all the supply of building materials, places considerable demands on transport routes, ie track tunnels and access galleries, which are also the source of supplying the work with the necessary air. It can be delivered during construction exclusively by forced circulation, usually by means of lute strokes. So far, the technologies used so far do not make it possible to use gravity during work, which creates considerable energy demands. Temporary access galleries are expensive and are only auxiliary facilities for the construction of the station itself

The above mentioned drawbacks are eliminated by a system of technological tunnels for the construction of the upper vault of a single-nave subway station, constructed from armed embossed tunnels according to the invention, which consists of a pair of mining tunnels embossed along the face of concreted vault supports. Mining galleries are interconnected by at least two transverse galleries, the origin of which is the lower contour of the upper vault of the station being built. At least one transverse gallery in its culture area is connected to the terrain through a supply well. Each mining gallery is connected to the corresponding line tunnel and / or behind the station being built, both in the route and in the rocket.

The advantage of the technology gallery system is that it uses gravity transport as much as possible. The top bays and transverse adits are driven upwards, so that the mine slides along the shank and is filled in trolleys by means of trolleys. For example, a scraper loader is used only at the top of the upper vault, where the transverse adits are driven almost as horizontal. The built-up system serves not only for the transport of the mine during the construction of the upper vault, but also for the supply of building material, especially concrete, which is also transported by gravity through the supply borehole and transverse gallery to the processing site.

Another significant advantage of the system is that by interconnecting the track tunnels with the supply borehole as an air outlet, they form a ventilation network for supplying fresh air by means of a passing wind current. The use of gravity and natural ventilation leads to considerable energy savings during transport. The relevant equipment does not need to be used, resulting in a reduction of the station's own construction costs. An unmistakable advantage is that equipment in relatively confined spaces does not interfere with work and does not need to be protected. The construction of temporary access galleries is completely eliminated. After the construction of the upper vault, the transverse adits are concreted and form part of it.

The illustration shows the axonometry of the operating gallery system.

Example

The system of technological tunnels for the construction of the upper vault of a single-nave driven metro station is built from armed mine tunnels. Along the face of the concreted arch supports 2, a pair of mining galleries is punched and interconnected by four ceiling galleries 2 with four transverse galleries to, which divide the future upper arch into three sections. The origin of each transverse gallery ± is the bottom outline of the upper vault of the station being built. In its culmination area, each odd transverse gallery 6 is connected to the terrain via a supply door 5. Each mining gallery i is connected to the corresponding track tunnel in front of the one-nave station being built in the route and in the rocket.

SUBJECT OF THE INVENTION

Claims (2)

SUBJECT OF THE INVENTION A system of technological galleries for the construction of the upper vault of a single-nave metro station, constructed of armed driven galleries, characterized in that it consists of a pair of mining galleries (1) punched along the face of concreted vault supports (2) and through overhead coves (3); interconnected by at least two transverse galleries (4), whose origin is the bottom contour of the upper vault of the station being built and at least one transverse gallery (4) in its culmination space is connected to the terrain by a supply borehole (5). System according to claim 1, characterized in that each mining gallery (1) is connected to the corresponding track tunnel in front of and / or behind the station to be built. 1 drawing