KR102652353B1 - Method for replacing a superannuated pipes - Google Patents

Abstract

The present invention is to replace the old pipe (200a) in the pipe consisting of the propulsion pipe (100) and the old pipe (200a) and the sand (300) filled between the propulsion pipe (100) and the old pipe (200a) by replacing the filled sand (300). After collection, the old pipe (200a) is removed. At this time, foreign substances on the inner circumferential wall of the propulsion pipe (100) are removed and coated, and then the fuse (200b) is installed. The collected sand (300) is then mixed with the propulsion pipe (100) and the fuse ( 200b) relates to a method of replacing an old pipe by filling and reusing it, which includes a propulsion pipe (100) buried in the ground, an old pipe (200a) located inside the propulsion pipe (100), and the propulsion pipe (100) and the old pipe (200a). ) In the method of replacing an old pipe (200a) in a pipe composed of sand (300) filled in the circumferential space (101) between the propulsion pipe (100) and the old pipe (200a), sand (300) is filled between the propulsion pipe (100) and the old pipe (200a). A first step of removing by suction, a second step of removing the old pipe (200a) after removing the sand 300, a third step of removing foreign substances from the inner peripheral surface of the propulsion pipe (100), and the propulsion pipe ( 100) A fourth step of coating the inner circumferential surface after removing foreign substances from the inner circumferential surface, a fifth step of installing the fuse 200b inside the propulsion tube 100, and It is characterized by a sixth step of filling the circumferential space 101 between the outer peripheral surfaces by reusing the sand 300 from the first step.

Description

Method for replacing a superannuated pipes}

The present invention relates to a method for replacing an old pipe. More specifically, when replacing an old pipe in a pipe composed of a propulsion pipe, an old pipe, and sand filled between the propulsion pipe and the old pipe, the filled sand is collected and the old pipe is removed, and at this time, the old pipe is removed. This relates to a method for replacing old pipes in which foreign substances on the inner wall of the pipe are removed and coated, a new pipe is installed, and collected sand is filled between the propulsion pipe and the new pipe to be reused.

Most of the pipes in general use are buried underground, and in order to bury such pipes, the ground is covered to a certain depth and then the pipes are buried.

As time goes by, pipes buried in this way cause various problems such as rupture and blockage of the pipe due to contaminants and external stress generated inside and outside the pipe.

In order to replace an old or damaged pipe, the surface is covered to the depth where the pipe is buried, in the same way as the process of installing a new pipe, the old pipe is lifted out, and a new pipe to be replaced is buried in its place.

However, in order to apply this traditional method, work must be done after controlling traffic in the area to replace the pipe, causing inconvenience to traffic and passage, and also generating a lot of dust and noise during the process of covering the surface. Not only does this cause civil complaints, but replacing old pipes using this traditional method has the disadvantage of requiring a lot of manpower, cost, and construction time.

In particular, in the existing old pipe replacement method, the old pipe is removed and the concrete or mortar filled between the old pipe and the propulsion pipe is excavated or crushed. At this time, the filler is removed and the propulsion pipe is damaged at the same time.

Therefore, in the field of existing old pipe repair or replacement methods, the development of appropriate methods and materials is insufficient due to technology or cost issues. In addition, new technologies, equipment, and methods are being actively announced regarding replacement or repair methods, but the reality is that research on the reuse of fillers applied to the method is very insufficient and its importance is also neglected.

1. Republic of Korea Patent No. 10-2252070 (Device for replacing old underground pipes) 2. Republic of Korea Patent No. 10-2185511 (Excavation equipment for replacing old pipes) 3. Republic of Korea registered patent 10-1715562 (non-dig deformed steel pipe replacement construction method)

The present invention was created to solve the above-mentioned problems. The present invention can minimize the equipment, time, and manpower required to replace old pipes by simplifying the process as much as possible, making it possible to replace old pipes more efficiently than existing methods. The purpose of the invention is to provide a method for replacing old pipes.

One embodiment of the present invention for achieving the above object is a propulsion pipe (100) buried in the ground, an old pipe (200a) located inside the propulsion pipe (100), and a space between the propulsion pipe (100) and the old pipe (200a). In the method of replacing an old pipe (200a) in a pipe composed of sand (300) filled in the circumferential space (101),

A first step of suctioning and removing the sand 300 filled between the propulsion pipe 100 and the old pipe 200a;

A second step of removing the old pipe (200a) after removing the sand (300),

A third step of removing foreign substances from the inner peripheral surface of the propulsion pipe 100,

A fourth step of coating the inner circumferential surface of the propulsion tube 100 after removing foreign substances from the inner circumferential surface,

A fifth step of installing the fuse (200b) inside the propulsion tube (100),

A method for replacing an old pipe is provided, which consists of a sixth step of reusing sand 300 from the first step to fill the circumferential space 101 between the inner peripheral surface of the propulsion pipe 100 and the outer peripheral surface of the new pipe 200b.

Meanwhile, when only the old pipe (200a) in the set section is replaced among the entire length of the pipe, the new pipe (200b) is installed only in the removed old pipe (200a), and a connection process with the existing installed main pipe is performed to install the new pipe (200b),

When replacing the old pipe (200a) in the above-mentioned setting section, remove the sand (300) filled in the circumferential space (101) between the old pipe (200a) and the propulsion pipe (100) and then replace it with the main pipe adjacent to the old pipe (200a). A step of installing a barrier member to prevent the sand 300 filled in the space 101 between the pipes 100 from being lost is further included.

Meanwhile, in the fifth step of installing the fuse (200b) inside the propulsion tube (100), the reinforcing member (700a) is mounted on the outer circumference of the fuse (200b) and is installed inside the propulsion tube (100) together with the fuse (200b). It will be installed with

The reinforcing body (700a) has a pair of support ring plates 710 spaced apart from each other so that the outer circumferential surface of the fuse 200b is in contact with the inner circumferential surface, and the upper surface is connected to each other across the outer circumferential surface of the support ring plate portion 710. It has a structure consisting of a plurality of vertical plate-shaped support plates 720 formed at equal intervals to surface the inner peripheral surface of the propulsion tube 100.

The old pipe replacement method according to the present invention removes the old pipe after removing the sand filled between the propulsion pipe and the old pipe without excavating the entire ground to replace the old pipe buried underground. At this time, the old pipe can be removed without crushing it. It is easy to use, and at the same time, by reusing the sand removed while burying the new pipe to be replaced and filling it between the propulsion pipe and the new pipe, cost reduction and replacement can be done efficiently in a short time.

Figure 1 is a diagram (a) of the first stage of removing sand in the old pipe replacement method according to an embodiment of the present invention and a diagram (b) of the pipe structure after removing sand.
Figure 2 is a structural diagram (c) of the third and fourth steps of removing and painting foreign substances on the inner wall of the propulsion pipe from which the old pipe has been removed in the old pipe replacement method according to an embodiment of the present invention, and the fifth step of installing a new pipe into the inside of the propulsion pipe. Structural diagram of the stage (d).
Figure 3 is a structural diagram (e) of the sixth step of reintroducing sand into the circumferential space of the pipe where the new pipe is installed in the old pipe replacement method according to an embodiment of the present invention.
Figure 4 is a perspective view (a) of the reinforcing member (700a) installed in the space between the propulsion pipe and the new pipe in the old pipe replacement method according to an embodiment of the present invention and a perspective view (b) of another reinforcing body (700b).
Figure 5 is a perspective view (a) of a reinforcing conductor installed in the space between the propulsion pipe and the new pipe in the old pipe replacement method according to an embodiment of the present invention and a cross-sectional view (b) of the third pipe to which the buffer member is connected.
Figure 6 is a cross-sectional view of a buffer support installed in the space between the propulsion pipe and the new pipe in the old pipe replacement method according to an embodiment of the present invention.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the present specification, when a part is said to “include” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary.

In order to achieve the above object, the following embodiments will be described in detail with reference to the drawings.

First, as shown in FIGS. 1 to 3, the propulsion pipe 100 buried in the ground, the old pipe 200a located inside the propulsion pipe 100, and the circumference between the propulsion pipe 100 and the old pipe 200a. In the method of replacing an old pipe (200a) in a pipe composed of sand (300) filled in the space (101),

A first step of suctioning and removing the sand 300 filled between the propulsion pipe 100 and the old pipe 200a;

A second step of removing the old pipe (200a) after removing the sand (300),

A third step of removing foreign substances from the inner peripheral surface of the propulsion pipe 100,

A fourth step of coating the inner circumferential surface of the propulsion tube 100 after removing foreign substances from the inner circumferential surface,

A fifth step of installing the fuse (200b) inside the propulsion tube (100),

A method for replacing an old pipe is provided, which consists of a sixth step of reusing sand 300 from the first step to fill the circumferential space 101 between the inner peripheral surface of the propulsion pipe 100 and the outer peripheral surface of the new pipe 200b.

As shown in (a) of Figure 1, the pipe structure in the old pipe replacement method of the present invention includes a propulsion pipe (100) buried in the ground, an old pipe (200a) located inside the propulsion pipe (100), and the propulsion pipe ( It consists of sand 300 filled in the circumferential space 101 between the propulsion pipe 100 and the old pipe 200a, and the sand 300 filled between the propulsion pipe 100 and the old pipe 200a is made of eco-friendly materials. It is used for the purpose of reuse as well as to prevent environmental pollution. In particular, the impact force transmitted to the ground is applied to the filled sand (300) before being transmitted to the old pipe (200a) or new pipe (200b) through the propulsion pipe (100). By acting to relieve shock or by absorbing and alleviating the shock before the external force transmitted from the old pipe (200a) or the fuse (200b) is transmitted to the propulsion pipe (100), the fuse (200b) including the propulsion pipe (100) Alternatively, the old pipe 200a is stably protected.

And, as shown in (a) of FIG. 1, the sand 300 filled in the circumferential space 101 between the propulsion pipe 100 and the old pipe 200a in the first step is sucked and removed. In order to suction the sand (300), a separate vacuum pump (400) is driven to suck the sand (300) by vacuum pressure, and the sand (300) is then recovered and stored in a separate storage. At this time, the sand (300) is stored in a separate storage. A moisture separator (not shown) may be included to remove the contained moisture.

And, as shown in FIG. 1, in the second step, the old pipe 200a is removed after removing the sand 300 in the first step, and the old pipe 200a is crushed to be discharged to the outside or the old pipe 200a is removed. ) itself can be moved to the outside through the inside of the propulsion pipe (100), and when the old pipe (200a) is pulled out to the outside without crushing the old pipe (200a), the space between the propulsion pipe (100) and the old pipe (200a) Since (101) is formed as an empty space, the old pipe (200a) can be easily pulled out to the outside through the propulsion pipe (100) using a separate tool or device.

In addition, when replacing an old pipe (200a) disposed in a certain section of the pipe, the sand (300) filled in the preset position of the old pipe (200a) can be removed, and then the old pipe (200a) can be partially crushed and taken out.

And, as shown in (c) of FIG. 2, in the third step, after removing the old pipe (200a) in the propulsion pipe (100), foreign substances on the inner peripheral surface of the propulsion pipe (100) are removed. A blasting equipment 500 is used to remove rust, foreign substances, etc. formed on the inner peripheral surface of the blasting equipment 500. Although not shown in the drawing, the blasting equipment 500 includes a blasting body equipped with a plurality of nozzles and a combustion material such as sand in the nozzles. It consists of a blasting tank that is supplied and filled at the same time, and is connected to the scattering prevention device to prevent the scattering of the combustion ashes and dust projected during the blasting operation with the nozzle in between, and to recover the projected combustion ashes. It may include a recovery device sent to the blasting tank, a dust collection device connected to the scattering prevention device to collect dust, and a moving device disposed at the bottom of each device to enable movement.

The combustion material can be any type of combustion material such as sand, shot balls, cut-wire, and grit. However, it is preferable to use cut-wire or grit. Conventionally, sand blasting or shot blasting using shot balls has been widely used during the blasting process. However, the conventional combustion material has a short lifespan due to its low strength, which has the limitation of requiring frequent replacement work, and has the disadvantage of not being able to form a precise roughness even during the surface treatment process.

On the other hand, cut-wire and grit have higher strength than the shot balls, so they have a longer lifespan and have the advantage of forming more precise roughness even during surface treatment. In addition, the amount of dust generated can be reduced, making environmentally friendly work possible.

And, as shown in (c) of FIG. 2, in the fourth step, the inner circumferential surface of the propulsion tube 100 is coated after removing rust, foreign substances, etc. for surface treatment of the inner circumferential surface of the propulsion tube 100, wherein the propulsion tube ( 100) A painting process of spraying and coating with paint is added to prevent rust on the inner wall, etc., and at this time, painting equipment 600 for painting is introduced into the propulsion pipe 100, and the painting equipment 600 It is integrated with the blasting equipment 500 so that painting work can be performed simultaneously after the blasting work is completed. It is also composed of a separate painting equipment 600 that is separate from the blasting equipment 500, so it can be performed independently. Painting is carried out while moving.

And, as shown in (d) of FIG. 2, in the fifth step, the fuse 200b is installed inside the propulsion pipe 100, and the fuse is installed inside the propulsion pipe 100 at the location of the removed old pipe 200a. It is installed by inserting (200b).

When replacing the old pipe (200a) corresponding to the entire length of the pipe, the new pipe (200b) is installed through the process of interconnecting while sequentially inserting the new pipe (200b). Conversely, the old pipe (200a) is installed in the set section of the entire length of the pipe. When replacing only ), the new pipe (200b) is installed only on the old pipe (200a) removed, and a connection process with the existing installed main pipe is performed to install the new pipe (200b).

When replacing the old pipe (200a) in the above-mentioned setting section, remove the sand (300) filled in the circumferential space (101) between the old pipe (200a) and the propulsion pipe (100) and then replace it with the main pipe adjacent to the old pipe (200a). To prevent the sand 300 filled in the space 101 between the pipes 100 from being lost, a blocking member (not shown) is installed, and the blocking member is removed after installing the new pipe 200b.

And, as shown in FIG. 3, in the sixth step, the circumferential space 101 between the inner peripheral surface of the propulsion pipe 100 and the outer peripheral surface of the fuse 200b is reused and filled with the sand 300 of the first step. , As described above in the first step, the filled sand 300 can not only increase the service life of the fuse 200b or the propulsion tube 100 by being recycled due to its eco-friendly material and acting as a buffer against external forces. Temperature changes in pipelines due to climate change while improving durability and weather resistance. This improves the resistance to deformation of the pipe structure.

In addition, as shown in (a) of FIG. 4, in the fifth step of installing the fuse 200b inside the propulsion tube 100, the fuze ( It is installed inside the propulsion pipe 100 together with 200b).

A reinforcing body (700a) is further included in the circumferential space 101 between the outer circumference of the fuse (200b) and the inner circumference of the propulsion tube (100), and the reinforcing body (700a) is used in the fuse (200b) at the stage of installing the fuse (200b). It is installed on the outer periphery of (200b) and installed inside the propulsion tube (100) together with the fuse (200b).

The reinforcement (700a) maintains the circumferential space (101) between the outer circumference of the fuse (200b) and the outer circumference of the propulsion pipe (100) stably, prevents deformation of the circumferential space (101) when filling with sand (300), and protects against external force. It serves to reinforce the rigidity of the fuse 200b.

The reinforcing body (700a) has a pair of support ring plates 710 spaced apart from each other so that the outer circumferential surface of the fuse 200b is in contact with the inner circumferential surface, and the upper surface is connected to each other across the outer circumferential surface of the support ring plate portion 710. It is composed of a vertical plate-shaped support plate portion 720 formed in plural pieces at equal intervals to surface the inner peripheral surface of the propulsion tube 100.

The reinforcement body 700a is a body composed of a pair of support ring plate parts 710 and a plurality of support plate parts 720 formed on the outer periphery between the support ring plate parts 710, and the support ring plate part 710 It is formed in the form of a plate-shaped ring having an inner peripheral surface and an outer peripheral surface each having a predetermined width, and the outer peripheral surface of the fuse 200b is on the inner peripheral surface of the support ring plate portion 710, and the lower surface of the support plate portion 720 is on the outer peripheral surface. The interview is connected.

The support plate portion 720 is in the form of a flat square plate formed in the longitudinal direction corresponding to the longitudinal direction of the fuse 200b or the propulsion pipe 100, and the lower surface of the support plate portion 720 is one support ring plate portion ( 710) and the other support ring plate portion 710 are connected across the outer circumference, and at this time, the upper surface of the support ring plate portion 710 faces the inner peripheral surface of the propulsion tube 100.

Support plate parts 720 are located in all four directions of the outer circumferential direction of the support ring plate part 710 and are installed to stably support the circumferential space 101 between the fuse 200b and the propulsion tube 100.

In addition, a reinforcing body (700b) having a structure different from that of the above-described reinforcing body (700a) can be installed, and as shown in (b) of FIG. 4, the reinforcing body (700b) has a fuse (200b) on the inner peripheral surface. ) a pair of support ring portions 730 spaced apart so that the outer peripheral surfaces of the support ring portions 730 are surfaced, and a connection curved portion 741 and the connection curved portion 741 that are curved so that the inner peripheral surfaces of each of the outer peripheral surfaces of the support ring portions 730 are connected across each other. At the center of the outer peripheral surface of the support portion 740, which is formed of a first support plate 742 in the form of a square plate with a lower surface connected to the surface and corresponding to the length of the connecting curved portion 741, is provided at equal intervals in the outer circumferential direction of the support ring portion 730. The support ring part 730 is formed in the shape of an arcuate ring, so that its inner circumferential surface faces the outer circumferential surface of the fuse 200b, and crosses between the outer circumference of one support ring part 730 and the outer circumference of the other support ring part 730. A plurality of connected support parts 740 are arranged at equal intervals along the circumferential direction of the support ring part 730, and the support parts 740 are connected to a curved connection curved part 741 and upward from the center of the connection curved part 741. It is composed of a protruding first support plate 742, and one outer surface of one support ring part 730 and one outer surface of the other support ring part 730 are connected and fixed to both ends of the inner peripheral surface of the connecting curved portion 741.

In addition, as shown in (a) of FIG. 5, a reinforcing inductor 800 is further included in the circumferential space 101 between the outer circumference of the fuse 200b and the inner circumference of the propulsion tube 100, and the reinforcing inductor 800 ) is installed on the outer circumference of the fuse (200b) in the step of installing the fuse (200b) and is installed inside the propulsion tube (100) together with the fuse (200b).

The reinforcing conductor 800 maintains the circumferential space 101 between the outer circumference of the fuse 200b and the outer circumference of the propulsion tube 100 stably, prevents deformation of the circumferential space 101 when filling with sand 300, and resists external force. It serves to reinforce the rigidity of the fuse (200b), and furthermore, after installation of the fuse (200b), due to the deterioration of the fuse (200b), a gap occurs between the existing fuse (200b) and the propulsion pipe (100) when replaced. The solidification of the filled sand 300 is caused by the removal of the reinforcing agent 800, thereby causing the solidified sand 300 to become fluidized, that is, to be loosened.

The reinforcing conductor 800 includes a cylindrical disc-shaped first pipe 810, a disc-shaped second pipe 820 having a larger diameter than the diameter of the first pipe 810, and the second pipe 810. A disc-shaped third pipe (830) with a larger diameter than the diameter of (820), and a first pipe (810), a second pipe (820), and a third pipe (820) based on the center of the first pipe (810). A first insertion hole 841 for inserting the first pipe 810, a second insertion hole 842 for inserting the second pipe 820, and The second support plate 840 in the shape of a square plate with a third insertion hole 843 for inserting the third pipe 830 is formed in a plurality at equal intervals in the circumferential direction of the third pipe 830.

That is, the first pipe 810, the second pipe 820, and the third pipe 830 corresponding to the longitudinal direction of the new pipe 200b are arranged in a longitudinal rectangle at equal intervals, and at this time, the first pipe 810 ), the second pipe 820 is placed on the side of the first pipe 810, and the third pipe 830 is placed on the side of the second pipe 820.

At this time, the first, second, and third insertion holes (841) (842) of the second support plate (840) are arranged in all directions to support the arrangement of the first, second, and third pipes (810, 820, and 830). By binding with (843), the gap between the first, second, and third pipes (810, 820, and 830) is maintained, that is, the second support plate (840) has a first pipe (810) at the bottom of one side. ), a second insertion hole 842 for inserting the second pipe 820 in the middle part of the second support plate 840, and the upper surface of the second support plate 840. A third insertion hole 843 for inserting the third pipe 830 is formed.

The second support plate 840 is in the form of a square plate, with the lower surface facing the inner circumferential surface of the fuse 200b and the upper surface facing the outer peripheral surface of the propulsion tube 100, and the second support plate disposed on all sides ( 840) has a shape and structure arranged in a straight line.

In addition, the above-described reinforcing elements (700a) (700b) and the reinforcing conductor (800) can be installed together in the circumferential space (101) between the fuse (200b) and the propulsion pipe (100), and at this time, the fuse (200b) and the propulsion pipe (200b) can be installed together. The reinforcing conductor (800) is installed at the front between the pipes (100) and the reinforcing elements (700a) (700b) are installed at the rear, so that when replacing the existing fuse (200b) in the future, the reinforcing conductor (8000) located at the front is forcibly pulled and filled. By inducing fluidization of the sand 300, replacement of the existing fuse 200b becomes easy.

In addition, the first, second, and third pipes 810, 820, and 830 of the reinforcing conductor 800 are arranged in a direction in which the third pipe 830 is located at the front and the first pipe 810 is located at the rear. A reinforcing conductor 800 is installed, and pull lines (not shown) are connected to the surfaces facing each other on the outer circumference of the third pipe 830 to extend to the outside between the fuse 200b and the propulsion pipe 100. When replacing the existing fuse (200b), the reinforcing conductor (800) is moved by pulling the pull line from the outside, thereby fluidizing the sand (300) filled between the fuse (200b) and the propulsion pipe (100).

In addition, as shown in (b) of Figure 5, each is connected to all four sides of the outer circumference of the third pipe 830, and a support tab 851 extending on one outer surface of the third pipe 830 and the support tab ( A buffer member 850 is connected to the end of 851 and has a hemispherical buffer section 852 with a buffer hole 853 formed therein. The buffer member 850 is made entirely of metal. It serves to attenuate the vibration transmitted from the propulsion pipe 100 and crush the solidified sand 300, and is an integrated structure consisting of a support tab 851 and a buffer 852, and the third It has a form that protrudes and connects to all four sides of the outer circumference of the pipe 830. The support tab 851 is in the form of a plate protruding straight from one surface of the outer circumference of the third pipe 830, and the buffer portion 852 has a hemispherical cross section. As, a buffer hole 853 is formed inside, and the end of the support tab 851 is connected to the center of the inner flat part of the buffer part 852, and the outer curved part is in contact with the inner peripheral surface of the propulsion tube 100.

And, as shown in FIG. 6, a buffer support 900 is further included in the circumferential space 101 between the outer periphery of the fuse 200b and the inner periphery of the propulsion tube 100, and the buffer support 900 is the fuse ( In the step of installing 200b), it is installed on the outer circumference of the fuse 200b and installed inside the propulsion tube 100 together with the fuse 200b.

The buffer support body 900 has a square outer surface portion 910 on the inner circumference of the propulsion pipe 100 where each first apex 911 is faced, and an outer surface portion 910 so as to be disposed inside the outer surface portion 910. ), each second apex 921 is fixed to the center of each first side 912, and the outer circumference of the new pipe 200b is located to the center of each second side 922. A square-shaped inner surface portion 920 It consists of

The buffer support 900 is connected and fixed to the square-shaped outer surface portion 910 and the inside of the outer surface portion 910, and each second apex 921 is located at the center of each first side portion 912 of the outer surface portion. It has an integrated structure consisting of a square-shaped inner surface portion 920 that is connected and fixed, and the cross-section of each of the outer surface portion 910 and the inner surface portion 920 may be circular and the interior may be sealed or hollow, and the shock absorber Each first apex 911 of the outer surface portion 910 of (900) is faced with the inner peripheral surface of the propulsion pipe 100, and a fuse 200b is located at the center of each second side portion 922 of the inner surface portion 920. It has a layout structure where the inner surface of the is interviewed.

One or more of the buffer supports 900 may be disposed at equal intervals in the circumferential space 101 between the fuse 200b and the propulsion tube 100, and the above-mentioned reinforcement members 700a and 700b and the reinforcement derivative ( 800), and at this time, in the space 101 between the fuse 200b and the propulsion tube 100, there is a reinforcing conductor 800 at the front, reinforcing elements 700a and 700b at the rear, and a reinforcing conductor 800. One or more buffer supports 900 may be disposed between the reinforcement members 700a and 700b.

The above description is merely an illustrative explanation of the technical idea of this embodiment, and those skilled in the art will be able to make various modifications and variations without departing from the essential characteristics of this embodiment. Accordingly, the present embodiments are not intended to limit the technical idea of the present embodiment but are for explanation, and the scope of the technical idea of the present embodiment is not limited by these examples. The scope of protection of this embodiment should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of this embodiment.

Propulsion building 100 Wonju space 101 Old building 200a
Fuse 200b Sand 300 Reinforcement 700a, 700b
Support ring plate part 710 Support plate part 720 Support ring part 730
Support portion 740 Connection curved portion 741 First support plate 742
Reinforced derivatives 800 Section 1 810 Section 2 820
3rd tube 830 2nd support plate 840 1st insertion port 841
Second insertion port 842 Third insertion port 843 Buffer member 850
Support tab 851 Buffer part 852 Buffer support 900
Outer section 910 Inner section 820

Claims (5)

A propulsion pipe (100) buried in the ground, an old pipe (200a) located inside the propulsion pipe (100), and sand (300) filled in the circumferential space (101) between the propulsion pipe (100) and the old pipe (200a). In the method of replacing the old pipe (200a) in the pipe consisting of,
A first step of suctioning and removing the sand 300 filled between the propulsion pipe 100 and the old pipe 200a;
A second step of removing the old pipe (200a) after removing the sand (300),
A third step of removing foreign substances from the inner peripheral surface of the propulsion pipe 100,
A fourth step of coating the inner circumferential surface of the propulsion tube 100 after removing foreign substances from the inner circumferential surface,
A fifth step of installing the fuse (200b) inside the propulsion tube (100),
An old pipe replacement method comprising a sixth step of reusing sand 300 from the first step to fill the circumferential space 101 between the inner peripheral surface of the propulsion pipe 100 and the outer peripheral surface of the new pipe 200b. According to paragraph 1,
In the fifth step of installing the fuse (200b) inside the propulsion tube (100), the reinforcement (700a) is mounted on the outer circumference of the fuse (200b) and is installed inside the propulsion tube (100) together with the fuse (200b). And
The reinforcing body (700a) has a pair of support ring plates 710 spaced apart so that the outer circumferential surface of the fuse 200b faces the inner circumferential surface, and the lower surfaces are connected to each other across the outer circumferential surface of the support ring plate portion 710, and the upper end A method of replacing an old pipe, characterized in that the surface is composed of a plurality of vertical plate-shaped support plates (720) formed at equal intervals to surface the inner peripheral surface of the propulsion pipe (100). According to paragraph 1,
In the fifth step of installing the fuse (200b) inside the propulsion tube (100), the reinforcement (700b) is mounted on the outer circumference of the fuse (200b) and is installed inside the propulsion tube (100) together with the fuse (200b). And
The reinforcing body 700b is connected to a pair of support ring parts 730 spaced apart so that the outer circumferential surface of the fuse 200b is in contact with the inner circumferential surface, and is connected in a curved shape so that the inner circumferential surfaces of each of the outer circumferential surfaces of the support ring parts 730 are connected across each other. At the center of the outer peripheral surface of the curved portion 741 and the connecting curved portion 741, there is a support portion 740 formed of a first support plate 742 of a square plate shape, the lower surface of which corresponds to the length of the connecting curved portion 741 and is connected to the surface. A method of replacing an old pipe, characterized in that a plurality of pipes are provided at equal intervals in the outer circumferential direction of the support ring portion 730. According to paragraph 1,
In the fifth step of installing the fuse (200b) inside the propulsion tube (100), the reinforcing conductor (800) is mounted on the outer circumference of the fuse (200b) and is installed inside the propulsion tube (100) along with the fuse (200b). And
The reinforcing conductor 800 includes a cylindrical disc-shaped first pipe 810, a disc-shaped second pipe 820 having a larger diameter than the diameter of the first pipe 810, and the second pipe 810. A disc-shaped third pipe (830) with a larger diameter than the diameter of (820), and a first pipe (810), a second pipe (820), and a third pipe (820) based on the center of the first pipe (810). A first insertion hole 841 for inserting the first pipe 810, a second insertion hole 842 for inserting the second pipe 820, and The second support plate 840 in the form of a square plate on which the third insertion hole 843 for inserting the third pipe 830 is formed is characterized in that it has a structure in which a plurality of pieces are formed at equal intervals in the circumferential direction of the third pipe 830. A method of replacing old pipes. According to paragraph 1,
In the fifth step of installing the fuse 200b inside the propulsion tube 100, the buffer support 900 is mounted on the outer circumference of the fuse 200b and is installed inside the propulsion tube 100 together with the fuse 200b. And
The buffer support body 900 has a square outer surface portion 910 on the inner circumference of the propulsion pipe 100 where each first apex 911 is faced, and an outer surface portion 910 so as to be disposed inside the outer surface portion 910. ), each second apex 921 is fixed to the center of each first side 912, and the outer circumference of the new pipe 200b is located to the center of each second side 922. A square-shaped inner surface portion 920 A method for replacing old pipes, characterized in that it consists of:

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