The method of performing tunnel

 

The invention relates to a shield tunnel construction and can be used mainly for conducting small diameter tunnels. The method includes the excavation, transportation outside of the tunnel, the flow of the shield on the bottom and lining of the tunnel by assembling rings of individual blocks. The construction of the tunnel lining is first performed with the use of pipe sections, which pushes jacking installation in conjunction with a shield. With increasing efforts forcing the lining tonella carried out by separate and sequential pipe jacking and supply shield to ultimately develop jacking installation efforts jacking, after which the lining is erected by the Assembly of rings of individual blocks. The invention is aimed at improving the quality of the tunnel lining. 1 Il.

The invention relates primarily to underground construction, namely the tunnels with the use of jacking units for jacking case of pipe sections.

A known method of performing tunnel that includes: excavation, transportation outside of the tunnel lining tunnel and feed the head section at the bottom, in which the feed I, consisting of individual blocks in the skirt of the shield (for example, see pages 15, Fig.2.2, Glorikian C. H., Hodos Century A. "Evaluation boards and complexes", M., Nedra, 1977, 326 S.). When this method of construction lining required significant additional volume of sealing joints and plugging space by lining the entire length of the tunnel.

There is also known a method of performing tunnel in which the tunnel lining is in the form of a casing of the pipe sections by means of joint jacking case and the head section using complex equipment jacking installation and, as the head section equipped with jacks supply Board (see, for example, the prospectus of the company Herrenknecht AG, the shield series T). When this method of construction lining significantly reduces the complexity of additional work, however, limit the length of the tunnel is limited to the value of marginal efforts, develop applied in complex jacking station.

However, in practice for tunnels, there are cases when such technology, because of the increased resistance to bursting and the limited magnitude of the pressure efforts, develop jacking installation, does not provide available and primehome and greater length of the tunnel, which is the limiting parameters of the applied jacking station, a single set of equipment while reducing labor costs and time as auxiliary (Assembly-disassembly), and operations using the maximum jacking stations and sections of pipe that provides lower costs and high quality of the tunnel, at least in the early stages of the strip.

To this end, proposes a single set of equipment, comprising: podavlivaya jacking installation, transport equipment and (as head of the section of the complex) minisite, equipped with its own hydraulic cylinders supply and device for the erection of a block of lining, to keep the tunnel in three successive stages, namely: the construction of the tunnel lining to first exercise with the help of pipe sections, which pushes jacking installation in conjunction with a shield, then, with increasing efforts jacking by separate and sequential pipe jacking and supply shield (to develop extremely jacking installation efforts-through, then to build the lining Assembly of rings of individual blocks.

The drawing shows a diagram illustrating the implementation of FPIC is the implementation of the method, consists of jacking installation 1, shield 2, transport equipment, for example, in the structure of the loader 3 and the transport unit 4. The shield is equipped with its own hydraulic cylinders 5 supply and, for example, the skirt 6, for Assembly at the final stage of the tunnel rings 7 lining, consisting of individual blocks. Two major parts of the length of the tunnel lining is performed by using pipe sections 8.

The use of such a shield and jacking installation as part of the single set of equipment allows, if necessary, be combined into a single technological process of laying minitones two ways (technology), used now only separated and performed by different sets of equipment.

The method includes: excavation, transportation to the surface and the flow of the shield on the bottom, which is the initial length of the tunnel is part of the complex equipment jacking installation (with shield) (drawing), and increasing efforts jacking (second plot) - multiple and alternate punching case (when stationary shield) and then supply shield to the design by jacks feed length L (in the absence of Pro is a longer extension, the growth of resistance to bursting, if necessary, the filing of the shield is only jacks filing of the shield and the lining of the tunnel on this site do by assembling rings of individual blocks.

Thus, when applying the method and equipment for implementing the method provides the possibility of tunnel length substantially greater than the applied jacking installation, i.e. without increasing developed jacking installation, the marginal effort of pushing.

Claims

Method of tunneling, including excavation, transportation outside of the tunnel, the flow of the shield on the bottom and lining of the tunnel by assembling rings of the individual blocks, characterized in that the lining of the tunnel is first performed with the use of pipe sections, which pushes jacking installation in conjunction with a shield, and increasing efforts jacking by separate and sequential pipe jacking and supply shield to ultimately develop jacking installation efforts jacking, after which the lining is erected by the Assembly of rings of individual blocks.

 

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