KR102149739B1 - Method for lining a pipe and lining structure - Google Patents

Abstract

An objective of the present invention is to provide a method for repairing and reinforcing old pipelines, which can improve workability and reduce costs while securing strength, and a repair and reinforcement structure for old pipelines to which the method is applied. Disclosed in the present invention are a method for repairing and reinforcing old pipelines, and a repair and reinforcement structure applied thereto, wherein the method for repairing and reinforcing the old pipelines comprises the following steps: introducing a tube into an old pipe; entering an insertion pipe into the inside of the tube which is inserted into the old pipe; and filling a space between the tube and the insertion pipe with a liquid resin and hardening the liquid resin.

Description

Repair and reinforcement method and reinforcement structure for old pipes {METHOD FOR LINING A PIPE AND LINING STRUCTURE}

The present invention relates to a method for repairing and reinforcing old pipes, and more particularly, to a method for repairing and reinforcing old pipes for repairing/reinforcing old pipes buried underground, and to a method for repairing and reinforcing old pipes to which this method is applied.

According to the conventional technology (Korea Patent Registration No. 182821), a lining material in which a resin adsorbent is impregnated with a liquid unsaturated polyester resin is used to insert a lining material into the inside of an aging manhole or pipe, thereby controlling air pressure and water pressure. In the state that the lining material is pressed against the manhole or pipe wall by acting on the lining material, the inside of the lining material is heated with hot water and steam to cure the liquid unsaturated polyester resin, and the cured product is embedded in the inner wall to repair the manhole or pipe. I did.

However, according to the conventional technology as described above, there is an inconvenience in that the size of the lining material must be individually manufactured according to the length and size (inner diameter) of the pipe to be repaired.

In addition, equipment for moving the lining material to the construction site and inverting and inserting the lining material into the pipeline, equipment for expanding the lining material, and heating equipment for heating the inside of the lining material with hot water or steam are all available to the construction site. Since it must be put in, there is a problem that a lot of equipment is required, which increases cost, decreases work efficiency, and takes a long time to work.

In view of this, conventionally, as shown in FIGS. 1 and 2, a so-called lining-with-spirally-wound method (hereinafter referred to as a spiral method) was used. In this spiral method, a strip material having a coupling part at the end in the width direction is lined in a spiral pipe shape in a manhole, and at the same time, a spiral joint pipe with a diameter smaller than that of the old pipe is inserted into the old pipe by combining the ends, and the old pipe and the spiral joint pipe A filler such as cement mortar was filled in between. FIG. 1 shows a method of lining a strip material in a spiral pipe shape in a manhole to enter an old pipe, and FIG. 2 shows a method of lining a strip material in a spiral pipe shape directly in an old tube.

However, such a spiral method has a problem in that the strength may be insufficient due to the buried depth.

In addition, as shown in FIGS. 3 to 5, a lining-with-discrete pipes method is used in which separate pipes having a certain length are connected and repaired inside the pipe to be repaired. 3 is a method of inserting and installing each of the separated pipes into an old pipe by a pushing method from a manhole, and FIG. 4 shows a method of installing the separated pipes while pulling them into an old pipe, and FIG. It shows how to individually connect and install pipes. However, in the case of such a conventional construction method, the mass of the plastic insertion tube increases due to the buried depth, and thus, there is a problem in that workability is deteriorated or cost is increased.

In addition, in the case of the two conventional pipe regeneration methods as described above, since the bending modulus of elasticity is completely different between the inserted pipe or the spiral pipe and the old pipe and cement mortar with high rigidity is injected, the strength of the spiral pipe or the inserted pipe There was a problem that it was difficult to compensate for the shortage phenomenon. That is, external force such as underground water pressure transmitted to the spiral tube or the insertion tube cannot be transferred to the old tube at all, and is blocked by cement mortar, so that it is difficult to increase the strength of the spiral tube or the insertion tube. Therefore, when underground water pressure or the like acts on the insertion pipe, there is a problem that the risk of buckling occurs.

Republic of Korea Patent Publication No. 10-2013-0006369

The present invention was invented in view of the above points, and provides a method for repairing and reinforcing old pipes that can improve workability and reduce cost while securing strength, and a repair and reinforcement structure for old pipes to which this method is applied. There is a purpose.

The method for repairing and reinforcing old pipes according to the present invention for solving the above object includes: introducing a tube into the old pipe; Entering the insertion tube into the inside of the tube inserted into the old tube; And filling and curing a liquid resin into the space between the tube and the insertion tube.

Accordingly, it is possible to shorten the regeneration process time of the old pipe and reduce the cost.

Here, the insertion tube preferably has an outer diameter that is 5% or more smaller than the inner diameter of the old tube, and includes a spiral winding tube formed by winding a strip-shaped strip material into a circular tube.

Thereby, the spiral winding pipe can easily enter the inside of the tube in the old pipe to be repaired/reinforced.

In addition, it is preferable that a rib for an anchor protrudes on the outer surface of the spiral winding pipe.

As a result, it is possible to increase the hardening strength of the liquid resin filled in the space between the spiral winding pipe and the tube, and to improve the bonding force.

In addition, the insertion tube may have an outer diameter that is 5% or more smaller than the inner diameter of the old tube, and preferably includes a plurality of sheath tubes that are connected and assembled within the tube.

Accordingly, it is possible to easily perform repair/reinforcement of old pipes using the sheath pipe.

In addition, the sheath pipe, a polyester resin, glass fiber and sand are mixed with an additive to form a reinforced plastic composite pipe formed in a tubular shape; And a socket part which is extended to one end of the composite pipe so that the end of the plastic composite pipe of the neighboring sheath pipe is fitted and coupled, and a binder for increasing the bonding force with the resin is preferably installed on the outer surface of the reinforced plastic composite pipe.

Accordingly, a plurality of sheath pipes can be easily connected and inserted into the tube to be used for regeneration of old pipes.

In addition, the liquid resin may be any one thermosetting resin selected from unsaturated polyester, vinyl ester, and epoxy; And at least one additive selected from calcium carbonate, aluminum hydroxide, sand, and talc. It is good to include.

Accordingly, when the old tube is regenerated, the bending elastic modulus of the resin is adjusted to correspond to the inserted tube and installed between the inserted tube and the old tube, thereby enhancing the effect of the emphasis transmission.

In addition, the tube includes a plastic felt formed in a tubular shape by bonding by a joint in the longitudinal direction, and a plastic film coated on one surface of the plastic felt, and in the step of introducing the tube, the plastic felt is It is better to be inserted inverted to contact the inner wall of the.

Accordingly, it is easy to reverse insertion of the tube into the old tube, and after installation, it is possible to increase the bonding force between the old tube and the cured resin.

In addition, the step of filling and curing the liquid resin may include combining both ends of the tube to maintain airtightness with both ends of the insertion tube using fasteners; It is preferable to include; filling and curing a liquid resin while discharging air in the space between the tube and the insertion tube.

Accordingly, the liquid resin can be easily and effectively filled and cured in the space between the insertion tube and the tube.

In addition, the step of filling and curing the liquid resin includes filling and curing the liquid resin step by step by dividing the space to be filled with the liquid resin into a lower space, an intermediate space, and an upper space vertically, with a time difference, and the lower space It is preferable to fill the liquid resin having a shorter curing time than the liquid resin filled in the middle and upper spaces.

Accordingly, by uniformly filling the entire space between the tube and the insertion tube and curing the liquid resin, uniform strength can be generated on the entire outer circumference of the insertion tube.

In addition, before filling the liquid resin, it is preferable to further include the step of floating and fixing the insertion tube in the lower portion of the old tube.

Accordingly, it is possible to increase the reliability of the strength of the regenerated tube by maintaining a constant gap between the inserted tube and the old tube to ensure a uniform thickness of the cured resin as a whole.

In addition, the step of fixing may include expanding and pressing a plurality of small support tubes installed in the longitudinal direction of the tube and inserted together when the tube is inserted, thereby causing the insertion tube to float from the bottom of the old tube; It may include a step of measuring the inclination of the insertion tube with a laser, adjusting the pressure of the plurality of supporting small tubes to set the insertion tube to be located at the center of the old tube.

Accordingly, the insertion tube can be accurately set and installed in the center of the old tube.

In addition, in the filling and curing step, when the resin filled in the lower space is cured, it is preferable to remove the pressure of the plurality of supporting small tubes and then gradually fill the middle and upper spaces.

As a result, it is possible to harden the regenerated pipe by filling the resin in a state where the upper pipe is fixed to be located in the center of the old pipe, and the strength of the regenerated pipe can be increased by minimizing the space not filled with the resin.

In addition, the step of fixing may include the steps of reversely inserting the supporting small tube into a plurality of cloth bags installed in the longitudinal direction of the tube and inserted together when the tube is inserted; Expanding and pressing the inverted supporting small tube to float the insertion tube from the lower portion of the old tube; And measuring the inclination of the insertion tube with a laser, adjusting the pressure of the plurality of supporting small tubes, and setting the insertion tube to be located at the center of the old tube.

Accordingly, the positions of the previously inserted tube and the insertion tube can be easily set to be located in the center of the old tube.

In addition, the old pipe repair and reinforcement structure of the present invention for achieving the above object, the tubular tube in close contact with the inner wall of the old pipe; An insertion tube installed inside the tube; And a resin filled in the space between the tube and the insertion tube and cured.

As a result, it is possible to easily fill and cure the resin between the insertion tube and the old tube, and since the resin having a good strength transmission effect is filled between the old tube and the insertion tube, there is an advantage of preventing buckling due to external pressure.

In addition, the tube may include a tubular plastic felt in contact with the old tube and a plastic film coated on the inner surface of the plastic felt.

In addition, the insertion tube includes a spiral winding tube formed in a tubular shape by spirally winding a strip-shaped strip member, and an anchor rib coupled to the cured resin is preferably connected to the outside of the spiral winding tube.

Accordingly, it is possible to increase the bonding force between the spiral winding pipe and the cured resin.

In addition, the insertion pipe includes a plurality of sheath pipes connected in series by a socket portion extended at one end, and a resin adsorbent or a resin binder is preferably installed between the cured resin and the sheath pipe.

According to the old pipe repair and reinforcement structure of the present invention, the old pipe can be regenerated by installing a pipe regeneration structure in which a tube, a curable resin, and an insertion pipe are combined from the outside inside the old pipe.

In addition, as the insertion tube, a spiral winding tube or a sheath tube can be selectively used, and at this time, it is possible to construct the insertion tube and the bending elastic modulus of the curable resin in a similar manner, so that the regenerated tube is prevented from buckling due to external force. It can increase reliability.

In addition, since the insertion tube can be fixedly installed in a state where it is easily set in the center of the old tube, it is possible to regenerate the old tube so as to have uniform strength in the entire direction.

In addition, since it is possible to form a reinforcing structure and repair old pipes by filling the curable resin to a predetermined thickness, a relatively lightweight insertion tube can be used, thereby improving the convenience of construction compared to the conventional technology using a heavy insertion tube. And, it is possible to reduce the cost by shortening the construction time.

1 and 2 are diagrams for explaining a conventional spiral method.
3 to 5 are views for explaining a conventional lining-with-discrete pipes method.
6 is a view for explaining a state in which a tube is inserted into an old tube.
7 is a perspective view showing the tube.
8 is a view for explaining the assumption that the spiral winding pipe is drawn into the tube inside the old pipe.
9 is a diagram for explaining a process of injecting a liquid resin between a tube installed inside an old tube and a spiral winding tube.
10 is a cross-sectional view for explaining the pipe support structure installed inside the old pipe.
11 is a diagram for explaining a process of inverting and inserting a tube into an old tube by pressure.
12 is a diagram for explaining a process of introducing a sheath tube into a tube inside an old tube.
13 is a cross-sectional view showing the sheath tube of FIG. 12.
14 is a view for explaining a process of filling a liquid resin into a space between a tube and a sheath tube installed inside an old tube.
15 is a cross-sectional view showing a state in which a sheath tube is installed inside the tube as shown in FIG. 12.
16 is a cross-sectional view taken along the line I-I of FIG. 15.
17 is a cross-sectional view showing a state in which resin is filled between the inside of the tube and the sheath tube in the state of FIG. 14.
18 is a cross-sectional view taken along line II-II of FIG. 17.
19 is a schematic cross-sectional view showing a non-circular sheath tube.

Hereinafter, a method for repairing and reinforcing old pipes according to an embodiment of the present invention and a structure for repairing and reinforcing old pipes to which this method is applied will be described in detail with reference to the accompanying drawings.

A method for repairing and reinforcing old pipes according to an embodiment of the present invention and a method for repairing and reinforcing old pipes to which this method is applied will be described in detail.

First, the old pipe repair and reinforcement structure 50 according to the embodiment of the present invention is spirally wound as a tube 100, a curable resin 410 and an insertion tube from the inner wall of the old pipe 10, as shown in FIG. The tube 200 has a combined configuration. And preferably, an anchor rib 211 is installed on the outside of the spiral winding pipe 200 to have a configuration combined in a state buried in the curable resin 410. The old pipe repair and reinforcement structure 50 (hereinafter referred to as'repair and reinforcement structure') having the above configuration is installed on the inner wall of the old pipe 10 by the old pipe repair and reinforcement method of the present invention to regenerate the old pipe 10 There will be.

Hereinafter, a method of repairing/reinforcing by installing the repair and reinforcement structure 50 inside the old pipe 10 will be described.

First, as shown in FIG. 6, a tube 100 having a dimension substantially the same as the inner diameter of the old tube 10 is inserted into the old tube 10 through the manhole 20. The tube 100 may be introduced into the old pipe 10 using the traction rope 30. The tube 100 may be formed of a material coated with a plastic film 120 on a plastic felt 110, as shown in FIG. 7. The tube 100 may be manufactured in the form of a tube having a predetermined length by bonding the coupling member 130 to the outer side of the bonding portion 111 in the longitudinal direction of the tube 100. That is, the tube 100 is a material in which a plastic film 120 such as polyethylene is coated on one surface of a plastic felt 110 such as polyester felt having a thickness of approximately 0.5 mm to 30.0 mm, and the outer surface is a plastic film, the inner surface The airtightness tube processed into a tube shape to become this plastic felt.

In addition, a plurality of cloth pockets 140 or support tubes 150 are provided on the inner circumferential surface of the tube 100, that is, the inner circumferential surface of the plastic felt 110 over the entire length in the longitudinal direction of the tube 100 (2 to 30) It is desirable to be installed. The cloth bag 140 or the support tube 150 has a diameter of 300 mm or less, and is preferably disposed and fixed at regular intervals in the circumferential direction on the inner circumferential surface of the tube 100.

When the tube 100 having the above configuration is inserted into the old tube 10, the plastic felt 110 is exposed to the outside and is reversed to face the inner wall of the old tube 10 and inserted. A method of reversely inserting the tube 100 into the old tube 10 includes a method of traction after inversion or a method of inserting while inverting. After the tube 100 is inverted and inserted into the old tube 10, as shown in FIG. 8, the spiral winding tube 200 is inserted into the tube 100.

Here, the spiral winding pipe 200 is manufactured to have an outer diameter that is at least 5% smaller than the inner diameter of the old pipe 10 and is preferably installed inside the tube 100. That is, the spiral winding pipe 200 is inserted into the tube 100 by making the strip material 210 into a circular spiral winding tube 200 using the winding device 300 in the manhole 20 of the site. The strip material 210 may be made of vinyl chloride, polyethylene, or the like, and has an anchor rib 211 protruding outward. This strip material 210 has a width of 50mm to 500mm, a plate thickness of 1.0mm to 10.0mm, and a height of the anchor rib 211 is 5.0mm to 50.0mm, and supports at least 50m to 2000m. It is wound around a dragon roller (not shown) and moved to the site.

Here, the winding device 300 combines and passes one end of the strip material 210 wound around the support roller, while passing through the coupler 310 to traction and supply the strip material 210, and the coupler 310 The strip member 210 is provided with a cage 320 for moving into the tube 100 by forming a tube shape having a desired outer diameter. Since such a winding device 300 can apply a known technique widely used in the art, further detailed description will be omitted.

Thereby, the spiral winding pipe 200 is manufactured and is pushed out while rotating into the tube 100 and inserted. In order to smoothly insert the spiral winding pipe 200 into the tube 100, a tubular tube fixing nozzle 220 is installed at the entrance of the old pipe 10, and a tube outside the tube fixing nozzle 220 Fix (100). And by supplying the spiral winding pipe 200 to pass through the tube fixing nozzle 220, it is possible to easily insert the spiral winding pipe 200 into the inside of the tube 100 to which one end is fixed. In addition, water may be contained in the tube 100 to float the spiral winding tube 200 to facilitate rotation and forward movement, and a lubricant such as oil may be applied to the plastic film on the inner surface of the tube 100. In addition, a guide tube (not shown) may be installed at the tip of the spiral winding tube 200, and the tube 100 may be pushed in the opposite direction to widen it.

In addition, the spiral winding pipe 200 may be inserted into a small diameter, and the direct operation may be expanded after insertion.

As described above, when the inserting operation of the spiral winding pipe 200 into the tube 100 is completed, as shown in FIG. 9, the space between the inner surface of the tube 100 and the outer surface of the spiral winding tube 200 ( The liquid resin 410 is filled in G). That is, as shown in FIG. 9, both ends of the tube 100 are fixed to the outer periphery of the spiral winding tube 300 to maintain airtightness by using a fastener 420. Then, while stirring the liquid resin in the resin tank 430 with a stirrer 431, the resin supply hose 440 is supplied to the space G between the tube 100 and the spiral winding tube 200 and filled. . The filling amount of the liquid resin can be adjusted by operating the valve 441 installed in the resin supply hose 440. While the liquid resin is filled as described above, the air in the space (G) may be discharged to the outside through the air discharge pipe 450 connected to the tube 100, and thus, while flowing the liquid resin 410 by its own weight It can be charged effectively.

Here, the liquid resin has a configuration in which a thermosetting resin and an additive are mixed, and the thermosetting resin may be an unsaturated polyester, a vinyl ether resin, or an epoxy resin. And as an additive, calcium carbonate, aluminum hydroxide, fine sand, talc, etc. may be mixed with the thermosetting resin. In addition, although it may vary depending on the site, in a site susceptible to water, a wet-curable unsaturated polyester that is well cured even in a wet situation may be used as the thermosetting resin. In such a liquid thermosetting resin, a catalyst or a curing agent is added in the field, and the curing time at room temperature can be adjusted as desired between 10 minutes and 3000 minutes. In addition, it is preferable that the bending modulus of the resin after curing is 100 MPa to 10,000 MPa.

Meanwhile, the injection of the liquid resin into the space G may be performed without fixing the tube 100 and the spiral winding tube 200. In this case, since the spiral winding tube 200 floats due to buoyancy, it is good to put water in the spiral winding tube 200.

In addition, in filling the liquid resin, the lower space of the spiral winding tube 300 is cured using a liquid resin having a fast curing time of about 30 minutes at the beginning. Subsequently, the liquid resin may be filled in the middle portion to be cured, and then the liquid resin may be filled in the upper portion to be cured in stages.

In addition, as another charging method, air is supplied to the small support tube 150 mounted on the tube 100 to inflate it, or in a state in which the tube is reversely inserted into the cloth bag 140 and inject the air to expand and pressurize the spiral. The winding pipe 300 may be fixed in a floating state from the bottom of the old pipe 10 by maintaining a predetermined distance from the old pipe 10. At this time, the inclination of the spiral winding tube 200 is measured with a laser, and the internal pressure in the plurality of supporting small tubes 150 is adjusted so that the spiral winding tube 200 is disposed in the center of the old tube 10. It can be set in the center of 10).

And when the spiral winding tube 200 is disposed in the center of the old tube 10, the liquid resin is firstly filled into the space at the bottom of the spiral winding tube 200, and the curing time of the resin at this time is about 10 to 200 minutes. Good to set. When the resin filled in the bottom of the spiral winding pipe 200 is cured, the pressure in the supporting small tube 150 is removed, and resin filling is performed in sequence. When the filling and curing operation of the liquid resin between the spiral winding pipe 200 and the tube 100 is completed and completed in stages, the regeneration of the old pipe 10 is completed. 10 is a cross-sectional view showing a state in which the regeneration of the old tube is completed by filling and curing resin between the tube 100 and the spiral winding tube 200, and at this time, it protrudes from the outer circumference of the spiral winding tube 200 inside the cured resin. The formed anchor ribs 211 are cured while being buried in a resin to serve as an anchor. Therefore, it is possible to increase the bonding force between the spiral winding pipe 200 and the cured liquid resin.

In addition, referring to FIGS. 17 and 18, a tube regeneration structure 50 ′ according to another embodiment of the present invention includes a tube 100, a curable resin 410, and a binder 530 disposed from the inner wall of the old tube 10. ) And a sheath tube 500 as an insertion tube. Here, the binder 530 may include a substrate adsorbent or a resin binder.

A method of regenerating the old pipe 10 by installing the pipe regeneration structure 50 ′ having the above configuration in the old pipe 10 will be described.

First, as shown in FIG. 11, the tube 100 is inverted and inserted into the old tube 10. That is, the one end of the tube 100 is folded back and the one end is mounted and fixed to the inverting nozzle 510, and the inverting nozzle 510 injects water through the water inlet to insert the tube 100 into the old tube 10. It can be inserted by inverting it.

Alternatively, the entire tube 100 may be housed in a sealed container, and the tube 100 may be reversely inserted into the old tube 10 by air pressure by applying air pressure in the sealed container.

In addition, as described above with reference to FIG. 6, after the tube 100 is inverted once, the tube 100 may be pulled into the old tube 10 while the plastic film is positioned on the inner surface thereof.

After the tube 100 is inserted into the old tube 10, as shown in FIG. 12, the sheath tube 500 is sequentially connected and inserted into the tube 100. Referring to Figure 13, the sheath pipe 500 is a tubular reinforced plastic composite pipe 510, provided at the end of the composite pipe 510, for packing coupling that is coupled to the end of the composite pipe 510 of the other sheath pipe 500 It has a socket part 520. The composite pipe 510 is preferably formed of a reinforced plastic material composed of additives such as polyester resin, glass fiber and sand. And the sheath pipe 500 has one length of 500mm to 6000mm, and the plate thickness varies depending on the pipe diameter, but is preferably 5.0mm to 100.0mm. In addition, a bonding material 540 is installed on the outer surface of the composite pipe 510 to a predetermined thickness. The binder 540 includes a resin adsorbent or a resin binder. In the case of a resin adsorbent, a felt made of polyester or polypropylene having a thickness of 0.5mm to 50.0mm may be used as a strip, and may be installed by being fixed to the outer surface of the composite pipe 510 as a winding adhesive. The sheath pipe 500 may also include a product that is divided once and combined and bonded, and may include a circular or non-circular pipe having a cross-sectional shape.

The sheath pipe 500 having this configuration is supplied to the entrance of the old pipe 10 through the manhole 20 one by one from the ground, and then, while inserting each into the inside of the tube 100 installed in the old pipe 10, the jack By pressing by or by traction using a traction device such as a winch from the other end tube, it can be pulled in while coupling a plurality of sheath pipes 500. That is, as shown in FIG. 12, by installing a square member 610 at the end of the sheath pipe 500, and pulling the traction rope 620 connected to the square member 610 with a winch from the opposite side, the sheath pipes 500 are combined. In the state, it can be drawn into the tube 100 inside the old tube 10.

Of course, the sheath pipe 500 may be inserted one by one into the old pipe 10 to be connected within the pipe. The coupling between the sheath pipes 500 is to install the packing 530 in the socket part 520, and the end of the composite pipe 510 of the neighboring sheath pipe 500 to the socket part 520 in which the packing 530 is installed. They can be pushed in and combined to ensure airtightness.

And when inserting the sheath pipe 500 into the tube 100, as described above with reference to Figure 8, the work is performed in a state in which one end of the tube 100 is coupled to the tube fixing nozzle 220 and fixed.

When the inserting operation of the sheath pipe 500 is completed, as shown in FIG. 14, the tube 100 is coupled to both ends of the sheath pipe 500 to maintain airtightness with a fastener 420. Then, the liquid resin 410 is filled in the space G between the sheath tube 500 and the tube 100. Since the liquid resin 410 and its filling method have been described with reference to FIG. 9 above, detailed descriptions of overlapping contents will be omitted.

On the other hand, as shown in FIGS. 15 and 16, a space G is formed between the tube 100 installed inside the old tube 10 and the sheath tube 500 disposed inside the tube 100. In this state, the tube 100 is inserted in reverse to the inside of the old tube 10 so that the plastic felt 110 is placed in contact with the old tube 10, so that the cloth bag 140 installed by being fixed to the plastic felt 110 or fixed For the small tube 150 is disposed between the old tube 10 and the tube 100. Accordingly, the sheath pipe 500 may be disposed to be located in the center of the old pipe 10 by inverting and pressing the tube into the fabric bag 140 or by pressing and expanding the supporting small tube 150. In this state, the liquid resin is filled into the space (G) at a staged difference and cured stepwise. Then, as shown in FIGS. 17 and 18, the tube 100 is in close contact with the inner wall of the old tube 10, and a curable resin 410 is filled between the sheath tube 500 and the tube 100 to be cured. . In addition, the bonding state of the curable resin 410 and the sheath pipe 500 may be firmly maintained by a binder provided on the outer periphery of the sheath pipe 500. In this way, the regeneration process of the old pipe 10 can be completed.

Of course, while filling the resin in the space (G), when the resin is filled by slowly releasing the pressure of the expanded small tube or the supporting small tube 150 by being reversely inserted into the cloth bag 140, the old tube 10 and The resin may be sufficiently filled in the space G to be cured so that the space between the tubes 100 does not remain.

Also, as shown in FIG. 19, a non-circular sheath tube 500' may be used. This non-circular sheath pipe 500' has a configuration in which the first and second divided pipes 501 and 502 divided from each other are bonded to each other by a joint 505, and an adhesive 530 is installed on the outer surface. Have a composition.

As described above, according to the pipe support structure and the pipe regeneration method, a tube and an insertion pipe are installed inside the old pipe, but a resin is used as a filler that can improve the rigidity and strength of the insertion pipe in the space between them. Then, by curing, the bending elastic modulus of the insertion tube and the bending elastic modulus of the filling resin can be easily adjusted to the same degree and reproduced.

In particular, when the anchor ribs of the insertion tube or resin adsorbent are combined with the filling resin, the effect of strength transmission can be enhanced.

In this way, the strength transmission becomes good, so that the lack of strength can be sufficiently compensated, and the lack of strength using a spiral winding pipe can be solved.

In addition, in the regeneration method using the sheath pipe, not only the lack of strength is eliminated, but a thin sheath pipe can be used, so that the workability can be improved and cost reduction effects can be obtained.

In addition, the tube can isolate the old tube and the filling resin to avoid contact with moisture, contaminants, etc., so that the filling resin can be cured in a good environment.

In addition, since the insertion tube can be easily set to the center of the old tube by using the small tube for support, it is possible to secure more stable strength.

Above, the present invention has been shown and described in connection with a preferred embodiment for illustrating the principle of the present invention, but the present invention is not limited to the configuration and operation as shown and described as such. Rather, it will be well understood by those skilled in the art that many changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims.

10..old building 20..manhole
30..towing rope 50,50'..repair and reinforcement structure
100..tube 110..plastic felt
120..Plastic film 200..Spiral winding tube
211..Anchor rib 300..winding device
500..sheath pipe 510..reinforced plastic composite pipe
520..Socket part 540..Binder

Claims (17)

Introducing the tube into the old tube;
Entering the insertion tube into the inside of the tube inserted into the old tube; And
Filling and curing a liquid resin into the space between the tube and the insertion tube; Including,
The step of curing by filling the liquid resin,
Coupling each of both ends of the tube to maintain airtightness with both ends of the insertion tube using fasteners;
Filling and curing the liquid resin while discharging the air in the space between the tube and the insertion tube; and repairing and reinforcing old pipes, comprising: a. The method of claim 1,
The insertion tube has an outer diameter that is 5% or more smaller than the inner diameter of the old tube, and includes a spiral winding tube formed by winding a strip-shaped strip material into a circular tube. The method of claim 2,
An old pipe repair and reinforcement method, characterized in that a rib for an anchor protrudes on the outer surface of the spiral winding pipe. The method of claim 1,
The insertion pipe has an outer diameter that is 5% or more smaller than the inner diameter of the old pipe, and includes a plurality of sheath pipes connected and assembled within the tube. The method of claim 4, wherein the sheath tube,
A reinforced plastic composite pipe formed in a tubular shape by mixing a polyester resin with glass fiber and sand as an additive; And
Including; and a socket portion extended to one end of the composite pipe to which the end of the plastic composite pipe of the adjacent sheath pipe is fitted and coupled,
A method for repairing and reinforcing old pipes, characterized in that a binder for increasing the bonding force with the resin is installed on the outer surface of the reinforced plastic composite pipe. The method of claim 1, wherein the liquid resin,
Any one thermosetting resin selected from unsaturated polyester, vinyl ester, and epoxy; And
At least one additive selected from calcium carbonate, aluminum hydroxide, sand, and talc; a method for repairing and reinforcing old pipes, comprising: a. The method of claim 1, wherein the tube,
A plastic felt bonded by a joint in a longitudinal direction to form a tubular shape, and a plastic film coated on one side of the plastic felt,
In the step of introducing the tube, the old pipe repair and reinforcement method, characterized in that the plastic felt is inserted to be inverted to contact the inner wall of the old pipe. delete The method of claim 1,
The step of filling and curing the liquid resin,
The space to be filled with the liquid resin is divided up and down into a lower space, an intermediate space, and an upper space, and filling and curing the liquid resin step by step with a time difference,
The method of repairing and reinforcing old pipes, characterized in that the lower space is filled with a liquid resin having a shorter curing time than the liquid resin filled in the middle and upper spaces. The method of claim 1,
Before filling the liquid resin, the method of repairing and reinforcing old pipes, further comprising the step of floating and fixing the insertion pipe from a lower portion of the old pipe. The method of claim 10, wherein the fixing step,
Expanding and pressing a plurality of supporting small tubes which are installed in the longitudinal direction of the tube and are inserted and installed together when the tube is retracted to float the insertion tube from the lower part of the old tube;
Measuring the inclination of the insertion tube with a laser, adjusting the pressure of the plurality of supporting small tubes to set the insertion tube to be located at the center of the old tube; repairing and reinforcing old pipes, comprising: Way. delete The method of claim 10, wherein the fixing step,
Reversing and inserting the supporting small tube into a plurality of cloth bags installed in the longitudinal direction of the tube and inserted together when the tube is inserted;
Expanding and pressing the inverted supporting small tube to float the insertion tube from the lower portion of the old tube; And
Measuring the inclination of the insertion tube with a laser, adjusting the pressure of the plurality of supporting small tubes to set the insertion tube to be located at the center of the old tube; repairing and reinforcing old pipes, comprising: Way. The old pipe repair and reinforcement structure, characterized in that formed by the invention of any one of claims 1 to 7. delete delete delete

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