The method of construction of the underground station deep under the surface

 

(57) Abstract:

The invention relates to underground construction, in particular to the construction of metro stations deep foundations. The method of construction of the underground station deep under the surface includes the excavation of the tunnels along the borders of the station tunnel transport tunnel construction along the axes of the tunnels supports in the form of columns with base toe and stacked in the column runs, releasing the supports using inventory spacers at side walls of the tunnels, removing the spacers, the cyclic penetration station and tunnels and the excavation of the benches, equal step supports, the construction of the free parts of lining tunnels with resting them on a support, the mounting platform part of the station tunnel in the form of monolithic concrete slabs and drinking parts of lining tunnels and pumping of the cement slurry for the outer surface of the lining of tunnels. The difference is that a monolithic slab connected directly with a flume of the transport tunnels, and in the process of excavation of adits and tunnels produce, respectively, the Assembly and disassembly of the temporary lining of the tunnels, with the removal of the spacers is carried out in the process of developing the soil and, in particular, to build a subway station deep under the surface.

There is a method of construction of the underground station, deep foundations, including pre-drilling of the tunnels with the execution of them supports for the arches of the side and middle of the tunnels, the driving side and the middle of the tunnel at the beginning of Selig to trim installed footings, installation of lining tunnels with the bearing lining of the middle tunnel support and lining of tunnels on the feet and the ground, and then the subsequent development of soil to the bottom of the supports with the construction of the tray part of the station [1]

The disadvantages of this method of construction of the station is increased complexity and intensity when performing technological operations with the installation of the shaped tubing canted jumper, tubing temporary filling holes when drilling the lateral and middle tunnels, in the exercise of penetration openings with advanced dismantlement of temporary filling and the subsequent installation of the lining openings, and at the tunnels supports in the form of tubing with a concrete tides and medium supports in the form of a bonded lower adjacent segment.

Closest to the present invention is a method of construction of article the transport tunnels, stations, construction along the axes of the tunnels supports in the form of columns with base toe and stacked in the column runs, releasing the supports using inventory spacers at side walls of the tunnels, cyclical, the driving of the first station, and then tunnels with the development of soil benches, equal step supports, the construction of the crest of lining tunnels with resting them on a support, the mounting platform part of the station tunnel in the form of monolithic concrete slabs and drinking parts of lining tunnels and pumping of the cement slurry for the outer surface of the lining tunnels [2]

The disadvantage of this method is to narrow its scope in connection with the fact that the excavation of the tunnels is not possible the erection of temporary piles, and also due to insufficient rigidity of the erected plant designs, as monolithic slab platform part of the station is not linked directly to the lining tunnels.

The objective of the invention is to expand the scope of the method and increase the service life of the station.

The problem is solved due to the fact that the method of construction of the underground station deep foundations, including the excavation of the tunnels along the borders stancionnyj runs on columns, releasing the supports using inventory spacers at side walls of the tunnels, removing the spacers, cyclical driving station and tunnels with the development of soil benches, equal step supports, the construction of the crest of lining tunnels with resting them on a support, the mounting platform part of the station tunnel in the form of monolithic concrete slabs and drinking parts of lining tunnels and pumping of the cement slurry for the outer surface of the lining of the tunnels during excavation of adits and tunnels produce, respectively, the Assembly and disassembly of the temporary lining of the tunnels, with the removal of the spacers is carried out in the process of excavation in tunnels before the construction of their lining, and a monolithic slab connect with flume parts of the tunnels directly.

In Fig. 1 shows the excavation of the tunnels, installation of supports with reference heels and runs, installation of spacer elements of Fig. 2 the penetration station and tunnels, installation of the lining with the construction of their gutter parts in the form of a reverse arch (cross section) of Fig. 3 shows the form And on the plate connected to the supporting abutments and the lining of the tray part of the tunnels.

Station Metropolitan who cling 5 with bearings made in the form of columns with 6 runs 7 and the supporting abutments 8, reverse vaults 9 tray section of tunnels 1 and flat monolithic concrete slab 10 platform part of the station tunnel.

The method of construction of the station is as follows. The driving of adits 5 is performed, for example, mechanized mining combines with the erection of temporary piles (not shown). In the tunnels 5 place the support columns 6 with 7 runs, then column 6 raskrepljajut inventory spacers 11. Then carried out cyclically by the benches, equal step columns, the driving station 2 tunnel with dismantling temporary roof supports, and installation of the lining of the blocks having an internal cavity. The lining 3 is mounted, connecting the blocks together in series, using special platforms (not shown). Then for the outer surface of the lining 3 of the pump units of rapid-hardening cement slurry 12 to provide a snug fit to the wall of the tunnel, and then concreted internal cavity blocks. When this control is provided completely fill the gap between the outer surface of the blocks and the wall, as well as complete filling during pouring of the internal cavity blocks is the development of a ground platform part 4 medium 2 tunnel and laying reinforced plate 10. After this is carried out cyclically (step columns), the driving of the side 1 of the tunnels and the installation of the lining 3 of the blocks with bearing on one side on the ground, and the other on the plate 10. The sequence of operations performed in the likeness of the installation of the lining of the middle of the tunnel 2. In the process of excavation in tunnels before the construction of their inventory lining of the spacer 11 is removed. The connection plate 10 with the supporting abutments 8 and the lining 3 of the side tunnels creates a rigid structure station in transverse and longitudinal sections of the station.

The method of construction of the underground station deep foundations, including the excavation of the tunnels along the borders of the station tunnel transport tunnel, installation along the axes of the tunnels supports in the form of columns with base toe and stacked in the column runs, releasing the supports using inventory spacers at side walls of the tunnels, removing the spacers, cyclical driving station and tunnels with the development of soil benches, equal step supports, the construction of the crest of lining tunnels with resting them on the supports, the mounting platform part of the station tunnel in the form of monolithic concrete slabs and drinking parts of lining tunnels and pumping cement St accordingly, the installation and dismantling temporary roof support tunnels, while removing the spacers is carried out in the process of excavation in tunnels before the construction of their lining, and a monolithic slab connect with flume parts of the tunnels directly.

 

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