RU2620479C1 - Method for trenchless reconstruction of internal surface of culvert system - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: for the method implementation, the reinforcement frame in the form of a nonequilateral profile 2 is fixed on the inner side of the reconstructed section 1. The vertical ledges 3 of the profile 2 have transverse openings 4. The initial spiral turn of the belt 7 is aligned with the profile 2 so that its ledges 3 are mated to the base 8 of the belt 7 and have a pitch sufficient to accommodate at least two elements 9 of the belt 7. The openings 4 in the profile 2 are arranged coaxially with the transverse openings 11 on the vertical ledges 10 of the elements 9 of the belt 7 for fixing them by the rod elements 13. The second and subsequent spiral turns are wound. The turns are connected by a profile connecting device 14 equipped with the membrane compensator 15 and the composite base 16. The device 14 is also equipped with primary 20 and secondary 21 locking elements, which are able to interact with the elements 12 of the belt 7. The winding of the belt 7 and the device 14 is carried out by winding machines, with permanent fixation by the elements 13, until the plastic pipe 22 is obtained along the entire length of the section 1. The volume between the inner surface of the section 1 and the outer surface of the pipe 22 is filled with a polymer-cement composition.

EFFECT: increasing the strength of connecting the winding elements together and fixing them to the culvert system.

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Description

The invention relates to the construction and is intended for the repair of culvert systems of tunnels, sewers, mines, structures, and in particular to a method of trenchless restoration work.

A known method of trenchless restoration of the pipeline, providing for telemetric inspection of the pipeline, sequential cleaning it from corrosion and the introduction of concrete composition, RU No. 23224103 C1, F16L 55/16, 05/10/2008.

A known method of restoring an existing pipe by connecting segments within an existing pipe, wherein the segments are connected in the direction of the pipe length in stages, including butt joint of the first and second segments and screwing the fastener and serial connection of the segments to the attached segments, RU No. 2509253 C1, F16L 55/163, 03/10/2014; RU No. 2507435 C2, F16L 55/163, 02.20.2014.

An expandable polymer sleeve and a method for using it, a method for manufacturing a sleeve and a method for creating a polymer coating on the inner surface of a pipe are known, characterized in that the polymer sleeve contains a support collapsible framework and a polymer arm in a state of elasticly compressed diameter placed inside the support collapsible framework, wherein the polymer the sleeve is made with the possibility of tight fit to the inner surface of the pipe after the destruction of the supporting destructible frame, RU No. 2548302 C2, B29C 63/34, F16L 55/165, 04/20/2015; RU No. 131666 U1, B29C 63/18, B29C 63/34, F16L 55/165, 08/27/2013; RU No. 125516 U1, B29C 63/34, 03/10/2013; RU No. 2385228 C2, B29C 63/34, F16L 55/165, 03/27/2010; RU No. 2368502 C2, B29C 63/34, F16L 55/165, 09/27/2009.

A known method of repairing pipelines, which consists in drawing through sections of the repaired pipe sections that form the inner pipe of polymer material and subjected to preliminary compression, RU No. 2419020 C2, F16L 55/16, 05/20/2011; RU No. 2331014 C2, F16L 55/16, 08/10/2008.

A known method of repairing large-diameter pipelines, used to repair trunk pipelines, as well as sewage collectors, by introducing into the pipe being repaired an auxiliary polymer pipe and installing fittings that are poured with concrete, RU No. 2275543 C1, F16L 55/165, 04/27/2006.

A known method of repairing pipelines and a technological complex for its implementation, including the introduction of a plastic pipe into a repaired steel pipe and filling the space between the pipes with a liquid or gel substance with a delayed polymerization time, the introduction of a plastic pipe into a repaired steel pipe is carried out simultaneously with the continuous manufacture of a plastic pipe ( from the beginning of the pipeline to its end point) in a block made in the form of a device for a single-layer or multi-layer ext doping and / or casting and / or surfacing of plastic, and the front part of the plastic pipe is connected to the traction body in the form of a winch installed at the end of the steel pipe being repaired, RU No. 2379573 C1, F16L 55/165, F16L 55/00, 01/20/2010 .

Known methods for restoring the inner wall of the pipe and creating a polymer coating on its inner surface are individually designed, and the use of a cladding pipe obtained by spiral winding of plastic tape in the known analogues is not provided for repair.

A known method of winding a pipe with a spiral wall from the inside, by winding inside an existing pipeline from a strip along the spiral path of a new pipeline, RU No. 2232933 C2, F16L 55/165, 07/20/2004.

A known method of lining underground pipes, which consists in the formation of plastic material of the inner facing pipe formed by winding in a spiral plastic tape, RU No. 2194910 C2, F16L 55/16, 12/20/2002.

This technical solution was taken as the closest analogue of this group of inventions.

The closest analogue method and pipe lining means make it very simple and cheap to perform lining of a worn-out sewer pipe in a spiral wound lining pipe with a diameter close to the diameter of the pipe to be lined.

However, the implementation of the method in the closest analogue for winding the pipe determines the performance of the winding machine, and the design features of the winding tape, its connection and fastening to the repaired pipe are not provided.

The basis of this group of inventions is a solution to the problem that improves the performance of the restored area and implements the method, increases the strength of the connection of the winding elements to each other and their fastening to the culvert system, to ensure the integrity of the wound plastic pipe and restored area.

The technical result of the invention is to carry out work on the restored area in a trenchless way, to increase the system throughput due to the design features of the profiles of the plastic tape and the connecting device, to ensure the hydrostability of the restored section, to create the monolithic structure and the restored section when using high-strength polymer-cement composition.

According to the invention, this problem is solved due to the fact that the method of trenchless restoration of the inner surface of the culvert system consists in performing a plastic pipe therein by spiral winding of a plastic tape.

профиля.A reinforcing cage in the form of an unequal shelf is installed on the restored part from its inner side

profile.

There are transverse openings on the vertical shelves of this profile.

The unequal profile is fixed with horizontal shelves to the culvert wall. On the horizontal shelves are made holes for fasteners.

Then, the initial spiral winding of the profile plastic tape is carried out, corresponding to the size of the section of the restored section and its shape.

Profile plastic tape is made with a base, internal and external longitudinal elements.

равнополочного профиля.The internal longitudinal elements of the profile plastic tape are made of

equal shelf profile.

On the vertical shelves of an equal-shelf profile there are transverse openings.

профиля.External longitudinal elements made of

profile.

Then, the initial spiral turn is combined with an unequal profile fixed to the wall of the culvert system so that its vertical shelves are mated to the base of the profile plastic tape and have a step sufficient to accommodate at least two internal longitudinal elements of the profile plastic tape, and the transverse holes in them are located coaxially with transverse holes on the vertical shelves of the internal longitudinal elements of the profile plastic tape for fixing them with rod elements.

Then the second spiral winding is carried out, continuing the combination with a non-equal-profile profile of a profile plastic tape, the first and second turns are connected with a profile connecting device.

профиля и

профиля, соответственно, расположенными по краям составного основания, имеющими возможность взаимодействия с наружными продольными элементами профильной пластиковой ленты.The profile connecting device is equipped with a membrane compensator and a composite base, as well as primary and secondary locking elements from

profile and

profile, respectively, located at the edges of the composite base, having the ability to interact with the outer longitudinal elements of the profile plastic tape.

профилем.The composite base is made of two bases connected

profile.

Continue winding the profile plastic tape and the profile connecting device by means of winding machines, respectively, with constant fixing by the rod elements of the vertical shelves of the internal longitudinal elements of the profile plastic tape and unequal profile until the entire length of the restored section of the plastic pipe is obtained.

The inner surface of the plastic pipe is formed by the base of the profile plastic tape and the composite base of the profile connecting device.

The outer surface of the plastic pipe is formed by the internal longitudinal profile elements of the profile plastic tape and unequal profile and, in addition, it contains membrane compensators profile connection device.

Then, the volume between the inner surface of the restored section and the outer surface of the plastic pipe is filled with a polymer-cement composition of the brand with a water resistance of at least W12 with a compressive strength of 30 MPa and a tensile strength of 10 MPa after 24 hours.

Applicants have not identified sources containing information about technical solutions identical to the present invention, which allows us to conclude that it meets the criterion of "novelty."

Due to the implementation of the distinguishing features of the invention (in conjunction with the features indicated in the restrictive part of the formula), important new properties of the object are achieved.

Performing all the operations of the method for winding profile plastic tape and a connecting device in the presence of a reinforcing cage in the form of an unequal profile provides work on the restored area in a trenchless manner and improves the quality of operation of the restored area.

The presence on the vertical shelves of an unequal profile and on the vertical shelves of an equal-shelf profile of a profile plastic tape of transverse holes located coaxially relative to each other, and the use of rod elements increases the strength of the connection.

Anchoring each turn of a profile plastic tape during winding to a reinforcing cage pre-fixed to the wall of the culvert system allows you to completely repeat the geometric section of the restored section, minimizing its cross-sectional area and thereby not reducing its hydraulic characteristics in terms of throughput, i.e. without worsening its operating conditions, which improves the performance of the method.

The formation during winding of the inner surface of a plastic pipe with the base of a profile plastic tape and with the composite base of a profile connecting device increases the throughput of the systems and performance.

Formation during winding of the outer surface of a plastic pipe with internal longitudinal profile elements of a profile plastic tape and unequal profile increases the strength of fastening of the winding elements to the culvert.

The presence on the outer surface of a single plastic pipe of membranes of a profile connecting device provides a “locking” membrane effect that prevents the entry of contaminated moisture into the soil and an “open” membrane effect in which the membranes are a kind of internal hydraulic pressure valve to release accumulated moisture and prevent delamination from the internal hydraulic pressure of the restored section and the new plastic pipe, which improves the quality of the internal protection of the culverts thereby improves the operation of the restored site.

Filling the volume between the inner surface of the restored section and the outer surface of the plastic pipe with a polymer-cement composition ensures the solidity of the connection between the structure and the restored section.

Anchoring the profile plastic tape to the reinforcing cage ensures their reliable fixation with the area being restored, which eliminates the need for additional metal, wooden and other fasteners when pouring the polymer-cement joint into the space between the inner surface of the restored section and the outer surface of the plastic pipe improves the performance of the method.

Applicants are not aware of any publications that would contain information on the influence of the distinguishing features of the invention on the achieved technical result. In this regard, according to the applicants, it can be concluded that the claimed technical solutions meet the criterion of "inventive step".

The invention is illustrated by drawings:

in FIG. 1 - a method of trenchless restoration of the inner surface of the culvert system, the restored area, schematically;

in FIG. 2 - a method of trenchless restoration of the inner surface of the culvert system, profile plastic tape, cross section;

in FIG. 3 - a method of trenchless restoration of the inner surface of the culvert system, a profile connecting device, a cross section;

in FIG. 4 - a method of trenchless restoration of the inner surface of the culvert system, reinforcing cage, profile plastic tape, complete, cross section;

in FIG. 5 - a method of trenchless restoration of the inner surface of the culvert system, reinforcing cage, profile plastic tape, the core element, complete, cross section;

in FIG. 6 - a method of trenchless restoration of the inner surface of the culvert system, reinforcing cage, plastic profile tape, winding.

The drawings show:

The restored area is 1.

профиля - 2,Reinforcing frame in the form of unequal shelf

profile - 2,

vertical shelves (profile 2) - 3,

transverse holes (on shelves 3) - 4,

horizontal shelves (profile 2) - 5,

holes (on shelves 5) - 6.

Profile plastic tape - 7,

base (tape 7) - 8,

равнополочного профиля (ленты 7) - 9,internal longitudinal elements

equal shelf profile (tape 7) - 9,

vertical shelves (profile 9) - 10,

transverse holes (on shelves 10) - 11,

профиля (ленты 7) - 12.external longitudinal elements

profile (tape 7) - 12.

Rod elements - 13.

Profile connection device - 14,

membrane compensator (device 14) - 15,

composite base (device 14) - 16,

the first base (base 16) - 17,

the second base (base 16) - 18,

профиль (для оснований 17 и 18) - 19,connective

profile (for bases 17 and 18) - 19,

профиля (на основании 17) - 20,primary locking elements

profile (based on 17) - 20,

профиля (на основании 18) - 21.secondary locking elements

profile (based on 18) - 21.

Plastic pipe (when winding 7 and 13) - 22.

профиля 2.For trenchless restoration of the inner surface of the culvert system, a reinforcing cage is installed in the form of an unequal profile

profile 2.

On the vertical shelves 3 of profile 2 there are transverse openings 4.

On the horizontal shelves 5 of profile 2, holes 6 are made for fasteners.

Profile plastic tape 7 is made with a base 8, inner 9 and outer 12 longitudinal elements.

равнополочного профиля 9.The internal longitudinal elements of the profile plastic tape 7 are made of

equal shelf profile 9.

On the vertical shelves 10 equal profile profile 9 there are transverse holes 11.

профиля 12.External longitudinal elements made of

profile 12.

профиля и

профиля, соответственно, расположенными по краям составного основания 16, имеющими возможность взаимодействия с наружными продольными элементами 12 профильной пластиковой ленты 7.Profile connecting device 13 is equipped with a membrane compensator 15 and a composite base 16, as well as primary 20 and secondary 21 locking elements from

profile and

profile, respectively, located at the edges of the composite base 16, having the ability to interact with the outer longitudinal elements 12 of the profile plastic tape 7.

профилем 19.The composite base 16 is made of two bases 17 and 18 connected

profile 19.

The inner surface of the plastic pipe 22 is formed by the base 8 of the profile plastic tape 7 and the composite base 16 of the profile connecting device 14.

The outer surface of the plastic pipe 22 is formed by internal longitudinal profile elements 9 of the profile plastic tape 7 and unequal profile 2 and, in addition, it contains membrane compensators 15 of the profile connecting device 14.

For winding a plastic tape and a profile connecting device, machines of the NP1-2 model are used.

Profile plastic tape and profile connection device are made of hard PVC. The membrane of the profile connecting device is made of PVC - a membrane of the ECOPLAS brand.

The method of trenchless restoration of the culvert system is as follows.

неравнополочный профиль 2.On the restored section 1 from its inner side set

unequal profile 2.

The unequal profile 2 is fixed with horizontal shelves 5 to the wall of the culvert system.

Then, the initial spiral winding of the profile plastic tape 7 is carried out, corresponding to the size of the section of the restored section 1 and its shape.

Then the initial spiral coil is combined with an unequal profile 2 fixed on the wall of the culvert system so that its vertical shelves 3 are paired with the base 8 of the profile plastic tape 7 and have a step sufficient to accommodate at least two internal longitudinal elements 9 of the profile plastic tape 7, and the transverse holes 4 in them are aligned with the transverse holes 11 on the vertical shelves 10 of the internal longitudinal elements 9 of the profile plastic tape 7 for fixing them with rod ementami 13.

Then, the second spiral winding of the profile plastic tape 7 is carried out, the turns are connected to the profile connecting device 14, while continuing to combine them with an unequal profile 2.

Continue winding the profile plastic tape 7 and the profile connecting device 14 by means of winding machines, respectively, with constant fixing by the rod elements 13 of the vertical shelves 10 of the internal longitudinal elements 9 of the profile plastic tape 7 and the unequal profile 2 until a plastic pipe 22 is obtained along the entire length of the restored section 1.

Then the volume between the inner surface of the restored section 1 and the outer surface of the plastic pipe 22 is filled with a polymer-cement composition of the brand with a water resistance of at least W12 with a compressive strength of 30 MPa and a tensile strength of 10 MPa after 24 hours.

The polymer cement composition is prepared based on 1 m ³ :

Cement M400 - 1400 kg

Inplast supplement (15%) - 210 kg

Water - 447 kg

Plasticizer brand 20 GOLD (1%) - 14 kg.

To supply the polymer-cement composition using a mortar pump model ZN12.

The proposed technology is adapted for use in climate and soil conditions of the North-West region. As a result, old structures receive significant reinforcement and are able to withstand increased static and dynamic loads after restoration work, which allows to extend the life of culvert systems. Moreover, work on this technology can be performed for any geometry of the restored area at depths from 5 m to 50 m.

The proposed technology provides a comprehensive repair of culverts and includes strengthening their design while increasing dynamic and static loads. When using this technology, additional construction (excavation) work is not required either on the surface or inside the structure. These circumstances make it possible to carry out repairs in an extremely short time at their minimum cost.

A plastic pipe, wound according to the proposed technology, allows you to create a strong connection to it on the restored area and provides the ability to carry out restoration work, regardless of the length and shape of the restored section.

The claimed invention includes parts, materials and equipment that are widely used in construction equipment, and the experimental work on the implementation of the proposed technology determines, according to the applicants, the method meets the criterion of "industrial applicability".

The proposed invention allows:

- improve the performance of the restored site;

- improve the performance of the method;

- increase the strength of the connection of the winding elements to each other;

- increase the strength of the fastening of the winding elements to the culvert system;

- to ensure the integrity of the wound plastic pipe;

- to ensure the integrity of the restored area.

Claims (1)

The method of trenchless restoration of the inner surface of the culvert system, which consists in executing a plastic pipe in it by winding a plastic tape in a spiral, characterized in that a reinforcing frame in the form of an unequal-shaped profile is installed on the restored part from the inside, as shown in FIG. 4 poses 2, on the vertical shelves of which there are transverse openings, and fasten it with horizontal shelves to the wall of the culvert system, made with holes for fasteners, then carry out the winding of the initial spiral coil corresponding to the size of the section of the restored section and its shape, profile plastic tape made with the base , by internal longitudinal elements from an equal-shelf profile, as shown in FIG. 2 poses 9, on the vertical shelves of which there are openings, and external longitudinal elements made of a profile, as shown in FIG. 2 poses 12, then combine the initial spiral turn of the profile plastic tape with the unequal profile fixed to the culvert wall so that its vertical shelves are mated to the base of the profile plastic tape and have a step sufficient to accommodate at least two internal longitudinal elements of the profile plastic tape, and the transverse holes in them are aligned with the transverse holes on the vertical shelves of the internal longitudinal elements of the profile plastic tape for fixing and core elements then conduct the winding of the second helical coil, continuing to combine with unequal profile, connect the first and second coils with the profile connecting device provided with a compensator and a composite membrane with a base made of two bases joined profile as shown FIG. 3 poses 19, as well as primary and secondary locking elements from the profile, as shown in FIG. 3 poses 20 and FIG. 3 poses 21, respectively, located at the edges of the composite base and having the ability to interact with the outer longitudinal elements of the profile plastic tape, continue to wind the profile plastic tape and the profile connecting device by means of winding machines, respectively, with constant fixing by the rod elements of the vertical shelves of the internal longitudinal elements of the profile plastic tape and unequal profile, until the entire length of the restored section of the plastic pipe is obtained, the morning surface of which is formed by the base of the profile plastic tape and the composite base of the profile connecting device, and the outer surface of the plastic pipe is formed by the internal longitudinal profile elements of the profile plastic tape and unequal profile and, in addition, contains membrane compensators of the profile connecting device, then the volume between the inner surface of the restored section and the outer surface of the plastic pipe is filled with a polymer-cement composition m watertightness mark W12 at not lower strength after 24 hours compression of 30 MPa and 10 MPa tensile.

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