KR102051615B1 - Non-excavation Water Supply and Sewage Pipe Repair Method - Google Patents

Abstract

The present invention relates to a non-excavation water supply and sewage pipe repair method which enables continuous construction along a water supply and sewage pipe, saves costs required for the construction, and enables eco-friendly repair and construction according to sites with fewer personnel. To achieve the above purposes, according to the present invention, the non-excavation water supply and sewage pipe repair method comprises: a preparation step of preparing a repair by blocking a branch pipe in a pipeline and checking a crack portion; a washing step of removing contaminants attached to an inner surface thereof by using a washing device moving along the pipeline; a drying step of discharging high-pressure dry air to the inside of the pipeline cleaned by a drying device connected to the washing device and moved or by heating and drying the inside by using a heating element; a resin spraying step of spraying a repairing resin at a high pressure along the inner surface of the pipeline dried by using a spray device connected to the drying device and moved; a plastering step of uniformly applying the repairing resin sprayed through the resin spraying step to the inner surface of the pipeline by using a plastering device connected to the spraying device and moved; and a heating step of curing the repairing resin uniformly plastered on the inner surface of the pipeline by heating the repairing resin to high temperatures by using a heating device connected to the plastering device and moved.

Description

Non-excavation Water Supply and Sewage Pipe Repair Method

The present invention relates to a non-excavated water and sewage pipe repair method, and more particularly, to a method for non-excavated repair of water and sewage pipes that are old and cracked.

Generally, water and sewage pipes are buried in the ground to supply various sewage from homes and factories to sewage treatment plants.The water and sewage pipes are continuously exposed by pollutants contained in the sewage, which are corroded by oxides or seismic vibration. There is a problem that cracks are generated by the sewage leaks into the ground, whereby soil and groundwater are contaminated.

When the leak of water and sewage pipes is confirmed, the ground and water and sewage pipes need to be excavated to replace the water and sewage pipes buried in the ground, and there is a problem of costly and time-consuming process.

Therefore, a method of repairing water and sewage pipes in the state buried in the ground without digging and replacing the water and sewage pipes buried in the ground has been developed and used.

As a related art for the above purpose, a water and sewage pipe repair method (hereinafter referred to as a 'patent document') of Patent Publication No. 0967184 is disclosed.

The water and sewage pipeline repair method disclosed in the patent document comprises the steps of preparing the first and second working zone toward the ground of both ends of the old work section pipe in the water and sewage pipe and cutting both ends of the work section pipe; In the water and sewage pipeline repair method comprising a pre-lining step of preparing a lining by using a lining preparation equipment for removing and cleaning foreign substances on the inner wall of the work section pipe, the lining preparation equipment in the pre-lining stage is connected to a wire 1 The work tool side is towed by a towing device installed to wind or unwind the wire on the ground from the first work tool toward the second work tool in the direction of the second work tool, and the towing device is wound for winding the wire. The body is equipped with a roller, a horizontal boom installed in the body in the horizontal direction in the horizontal direction along the longitudinal direction of the work section pipe, and a guide roller for guiding the direction of the wire has a depth of the working tool on the horizontal boom It is installed to expand and contract in the vertical direction along the direction and can rotate around the horizontal boom. The vertical boom includes a vertical boom and a horizontal boom and a vertical boom corresponding to the end of the vertical boom so that the towing device can pull the wire in a direction parallel to the lengthwise direction of the working section pipe. Towing the wire in the adjusted state, the lining preparation equipment is sprayed with high pressure water to the inner wall of the work section pipe scraper for high pressure water spraying to scrape foreign substances on the inner wall of the work section pipe, and the work section pipe by the scraper Brush for rotating movement in a state in close contact with the inner wall with a work section pipe to wipe the foreign substances scratched from the inner wall includes a plurality of brushing device disposed in the circumferential direction, the high-pressure spraying scraper and brushing device in the pre-lining step At the same time being towed by the towing device connected, the high pressure spraying scraper is It is provided with a hollow body having a plurality of water injection holes connected to the pressure water supply pipe and a hollow inside, and a plurality of scraping wings are fixed to the outer surface of the hollow body by a fastening member to scrape the inner wall with the work section pipe. Each of the scraping vanes is provided with a plurality of fastening holes for fastening the fastening members, and each of the fastening holes is provided in communication with the water spray holes so that the water spray holes can be closed by the fastening members. Is characterized in that provided to maintain a state fixed to the body by at least one fastening member.

However, the water and sewage pipe repair method disclosed in the patent document removes contaminants fixed in the water and sewage pipe prior to the repair work, and thus is more closely bonded when the reinforcing tube (liner) is attached to the inner surface of the water and sewage pipe. However, in this case, once the water and sewage pipes have been cleaned and water has been removed, the equipment inside the water and sewage pipes must be removed, and then another equipment for installing the reinforcement tubes should be used, and also to supply high pressure compressed air to the reinforcement tubes. Because equipment for such as should be used together, there is a problem that takes a lot of manpower and equipment and time to repair non-excavated water and sewage pipe.

Therefore, it is required to develop a non-excavated water and sewage pipe repair method that can save time and costs for repair and construction, and can be eco-friendly to meet the current situation even with a small manpower.

KR 10-0967184 B1 (2010. 06. 23.) KR 10-0784617 B1 (Dec. 4, 2007) KR 10-0555026 B1 (2006. 02. 17.) KR 10-0639777 B1 (October 23, 2006)

The present invention has been made to solve the problems of the conventional non-excavated sewage pipe repair method as described above, the problem to be solved by the present invention is possible to continuous construction along the water and sewage pipe, the cost required for construction It is to provide non-excavated water and sewage pipe repair method that can be saved and eco-friendlyly repaired according to the site with less manpower.

Non-excavated water and sewage pipe repair method according to the present invention for solving the above problems, the preparation step to block the branch pipe inside the pipe line and check the cracked portion to prepare for repair; A washing step of removing contaminants attached to an inner surface by using a washing device moved along the pipe; A drying step of discharging high-pressure dry air into the inside of the conduit cleaned by a drying apparatus connected to the washing apparatus or by heating and drying using a heating element; A resin spraying step of spraying a high pressure resin for repair along the inner surface of the pipeline dried using a spraying apparatus connected to the drying apparatus; A plastering step of uniformly applying the repairing resin sprayed through the resin spraying step to the inner surface of the conduit using a plastering device connected to the spraying device; And a heating step of hardening by heating the repairing resin uniformly plastered on the inner surface of the conduit using a heating device connected to the plastering device at a high temperature.

In another aspect, the present invention is characterized in that the repair resin is made of any one main material selected from unsaturated polyester resins, vinyl ester resins and epoxy resins, and a cured material mixed with the main material in a predetermined ratio in the resin spraying step. .

In addition, the present invention is characterized in that an additive having a size of 2 to 4 mm in width and made of any one material selected from nonwoven fabric, carbon fiber and glass fiber is mixed at a predetermined ratio with the repair resin.

In addition, the present invention is characterized in that the pigment of a different color is further mixed according to the type of water supply and sewage to the repair resin.

And the present invention is controlled so that the washing device, drying device, spray device, plastering device and heating device is moved at a speed of 30 to 60 minutes per 10M in the interior of the pipe, the heating device, the temperature of 80 ~ 100 ℃ It is another feature to heat and harden the above-mentioned repairing resin by curing.

According to the present invention, the repair resin is sprayed along the inner surface of the pipeline after washing and drying the old pipeline that requires repair, and at the same time the repair resin sprayed through the plastering device is uniformly applied to the inner surface of the pipeline. After the application, the repairing resin sprayed through the heating apparatus is heated and cured quickly, thereby preventing the repairing resin from flowing down inside the pipeline.

In addition, a series of processes including washing, drying, spraying, plastering, and heat curing can be continuously performed according to the site situation, thereby greatly reducing the time, cost, and manpower required for non-excavation repair of the pipeline. .

1 is a process flowchart showing an example of a non-excavated water and sewage pipe repair method according to the present invention.
2 is a view showing an example in which a repair apparatus for using a non-excavated water and sewage pipe repair method according to the present invention is installed in a pipeline.
3 is a view showing an example of a repair apparatus according to the present invention.
4 and 5 show an example of a washing apparatus according to the present invention.
6 and 7 show an example of a drying apparatus according to the present invention.
8 shows an example of the injector according to the invention.
9 and 10 show an example of a plastering apparatus according to the present invention.
11 shows an example of a heating apparatus according to the invention.
12 is a view showing an example of a transfer apparatus according to the present invention.
Figure 13 shows an example of a connecting member according to the present invention.

Hereinafter will be described in detail according to the accompanying drawings showing a preferred embodiment of the present invention.

The present invention is to provide a non-excavated water and sewage pipe repair method that can be continuous construction along the water and sewage pipes, the cost required for construction, and eco-friendly maintenance work according to the site with a small manpower, The invention includes a preparation step (S10), washing step (S20), drying step (S30), resin spraying step (S40), plastering step (S50) and heating step (S60) as shown in FIG.

In addition, hereinafter, for convenience of description, the conveying direction of the repair device 20 in the conduit 10 will be described as 'forward', and the opposite direction will be described as 'rear'.

(1) Preparation step (S10)

This step is to put the CCTV equipment into the old pipeline 10 to determine whether the pipeline 10 cracks, and to establish a repair plan.

In addition, in the preparation step (S10) to check whether the branch pipe connected to the pipe line 10, and how to prevent the branch pipe to prevent the flow of sewage into the pipe line 10 through the branch pipe during the maintenance work. It is decided to stop.

At this time, as a way of blocking the branch pipes to find the catch of the branch pipe connected to the pipe line 10 to block the entrance and exit, the method of removing the sewage remaining in the inside of the catch pipe using a pump and the packer and the inside of the pipe (10) A method suitable for the construction environment is selected from the method of blocking the outlet of the branch pipe by using a member such as a balloon.

(2) washing step (S20)

This step is to clean the pipeline 10 by putting the repair device 20 into the pipeline 10 after determining whether the maintenance of the conduit 10 and the repair method in the preparation step (S10).

In this case, as shown in FIGS. 2 and 3, the repair apparatus 20 may be detachably attached to the washing apparatus 100, the drying apparatus 200, the spraying apparatus 300, the plastering apparatus 400, and the heating apparatus 500. Connected to the structure is configured to be separated and assembled as needed.

And the washing apparatus 100 is a tubular base member 110 having a predetermined length as shown in Figures 4 and 5, and a plurality of nozzles radially along the outer circumference of the base member 110 (Fig. (Unsigned)), the washing water sprayer 120 is installed, a plurality of washing scrapers 130 are radially installed along the outer circumference of the base member 110, and the washing scraper is installed on the base member 110. It includes a hydraulic device 140 for close contact 130 to the inner surface of the conduit (10).

Here, both ends of the base member 110 are provided with a flange portion (not shown) having a predetermined diameter, through which the camera 700 to be described later is installed on the front side of the base member 110, the drying apparatus on the rear side 200 is connected.

In this case, the washing water sprayer 120, the washing scraper 130, and the hydraulic device 140 are rotatably installed at a predetermined speed with respect to the base member 110, whereby the pipe is transported from one end of the pipe line 10 to the other end. (10) The contaminants adsorbed and fixed inside are effectively removed.

At this time, the contaminants with oil may be adsorbed and fixed inside the pipeline 10 so that they may not be easily removed, and thus hot water heated to a predetermined temperature may be sprayed through the washing water sprayer 120 so as to easily remove the contaminants. have.

In addition, the cleaning scraper 130 includes a metal plate (not shown) having a predetermined size, and a scraper (not shown) made of plastic or rubber material while being assembled to the metal plate, the scraper is worn between uses by this structure Even if only scraper can be replaced easily.

(3) drying step (S30)

This step is to remove the water remaining in the conduit 10 through the drying apparatus 200 connected to the rear side of the washing apparatus 100 after the inside of the conduit 10 is washed through the washing step (S30). .

The drying apparatus 200 of the drying step (S30) is provided with a tubular base member 210 having a predetermined length and a predetermined interval on the base member 210, as shown in Figs. It includes a plurality of hot air generators 220.

At this time, the hot air generator 220 is provided with a plurality of nozzles (not shown) radially configured to spray a high-temperature hot air toward the inner surface of the conduit 10, or to be close to the inner surface of the conduit 10 A heating element (not shown) is installed to remove moisture remaining on the inner surface of the conduit 10 by high heat.

Although the hot air generator 220 has been described only as being composed of any one means selected from high pressure hot air or a heating element, the water remaining on the inner side of the conduit 10 through the hot air and the heating element is more reliably. It may be configured to be removed.

(4) resin spraying step (S40)

This step is to repair the inner surface of the conduit 10 through the injection device 300 is connected to the rear side of the drying apparatus 200 after the moisture remaining in the conduit 10 is removed through the drying step (S30) High pressure injection of resin.

The injection device 300 of the resin injection step (S40) is a resin tank 310 and a receiving space of a predetermined size is formed inside, as shown in Figure 8, while being located on one side of the resin tank 310 The resin tank 310 is supplied with a predetermined amount of repairing resin, and includes an injector 320 for injecting the inner surface of the conduit 10.

At this time, the inside of the resin tank 310 is a one-liquid tank (not shown) in which any one resin (main material) selected from unsaturated polyester resin, vinyl ester resin and epoxy resin is stored, and a predetermined amount of hardener 2 is stored. The liquid tank and the mixing tank which mixes resin and hardening | curing agent supplied from the said 1, 2 liquid tank are provided.

In addition, the mixing tank has a structure of a piston and a cylinder so that the resin mixed with the curing agent can be injected at high pressure through the injector 320 without remaining therein, and because of this structure the resin mixed with the curing agent inside the cylinder Is pressurized and compressed by the piston to discharge high pressure toward the injector 320.

In this case, the 1 and 2 liquid tanks and the mixing tank are installed in a detachable structure and used so that the 1 and 2 liquid tanks and the mixing tank can be separated and washed with water, thereby mixing with the 1 and 2 liquid tanks. The resin remaining in the tank is cured to prevent the passage of the resin supply and discharge from being blocked.

And the front and rear of the resin tank 310 is provided with a connection flange 311 of a predetermined length, the bottom surface is provided with a plurality of moving wheels 312 is configured to be easily moved along the pipeline (10).

In addition, the injector 320 is installed on the connection flange 311 is installed on the back of the resin tank 310, whereby the marks of the moving wheel 312 installed on the bottom surface of the resin tank 310 injector 320 Through is not left in the repairing resin sprayed on the inner surface of the pipe (10).

On the other hand, the resin stored in the one-liquid tank is made of any one material selected from non-woven fabric, carbon fiber and glass fiber, the additive having a size of 2 to 4mm in width and stored in a mixed state at a predetermined ratio or separate The additive is stored in the tank and then supplied to the mixing tank at a predetermined ratio to be mixed together when the resin and the curing agent are mixed, so that the repairing resin sprayed on the inner side of the conduit 10 has a predetermined thickness by the additive. It can be applied more easily.

In addition, pigments (additives) of different colors are added to the resin for water supply and sewage, thereby making it possible to easily identify the purpose of the pipeline using only the water and sewage color.

(5) Plastering stage (S50)

This step is to uniformly apply through the plastering device 400 connected to the rear side of the injector 300 after the repair resin is injected to the inner surface of the pipeline 10 in the resin spraying step (S40).

The plastering device 400 of the plastering step (S50) is installed in a tubular base member 410 having a predetermined length and rotatably around the base member 410 as shown in Figs. It includes a rotating member 420.

At this time, the rotating member 420 is provided with a plurality of plastering plate 421 radially, such a plastering plate 421 is configured to be pulled out toward the inner surface of the conduit 10 by the hydraulic device, thereby rotating The resin sprayed on the inner surface of the conduit 10 by the rotation operation of the member 420 is uniformly applied so as to have a predetermined thickness.

Here, the inside of the plastering plate 421 is provided with a heating wire in a meandering manner, and as the power is supplied to the heating wire, the plastering plate 421 is configured to be heated to a predetermined temperature. The coating may be uniformly applied and simultaneously heated so that the repairing resin may be cured more quickly in the heating step S60 to be described later.

When the repairing resin sprayed on the inner surface of the conduit 10 is uniformly applied as described above, it becomes possible to harden the whole uniformly and reliably when heat-cured through the heating step S60 to be described later.

(6) heating step (S60)

This step is to heat-harden the repairing resin through the heating device 500 connected to the rear side of the plastering device 400 after the repairing resin is uniformly applied to the inner surface of the conduit 10 in the plastering step (S50) .

The heating device 500 of the heating step (S60) is a tubular base member 510 having a predetermined length as shown in Figure 11, and a plurality of heating elements are installed radially around the base member 510 520.

And the heating element 520 is adjusted in temperature so that the repair resin is heated to a temperature of 80 ~ 100 ℃, at this time, if the repair resin is heated to a temperature of less than 80 ℃ difficult to completely cure the repair resin after construction Defects may occur as a gap is formed between the pipe line 10 and the resin or uncured resin flows down. On the contrary, when the resin for repair is heated to a temperature exceeding 100 ° C., the time required for curing is shortened. Compared to that, the amount of energy used is significantly increased, which lowers the energy use efficiency.

On the other hand, the washing device 100, the drying device 200, the spraying device 300, the plastering device 400 and the heating device 500 is shown in a row is connected to each other in a repair device 20 is configured As described above, in addition to this, the base members 110, 210, 410, and 510 of the repair device 20 may be positioned at the center of the conduit 10, and at the same time, the repair device 20 may be moved by a driving device such as a motor. Transfer device 600 for transferring may be additionally installed.

12, the transfer device 600 includes a tubular base member 610 having a predetermined length, a plurality of hydraulic devices 620 installed on the base member 610, and the hydraulic device ( It includes a link shaft 630 of a predetermined length connected to one end of the 620 and the installation angle is adjusted, and a wheel 640 provided at the tip of the link shaft 630. And one side wheel 640 is connected to a driving device (not shown) such as a motor.

As described above, a plurality of transfer apparatuses 600 may be connected between the apparatus and the apparatus as necessary, and thus the repair apparatus 20 may be stably transferred, and at the same time, there may be an appropriate time difference between the processes. do.

And since the installation angle of the link shaft 630 is adjusted by the hydraulic device 620 can be easily installed so that the base member (110, 210, 410, 510) of the repair device 20 is located in the center of the conduit (10). have.

In addition, the conveying device 600 is controlled so that the repair device 20 is moved at a speed of 30 to 60 minutes per 10M inside the conduit 10, whereby washing, drying, resin spraying, plastering and heat curing are assured. Can be done.

In addition, the fisheye camera 700 having a predetermined size is installed at the front and rear ends of the repair apparatus 20, thereby performing the repair work while checking the images before and after the repair in real time.

On the other hand, if the conduit 10 is not in a straight line, the repair device 20 may not be easily moved. In this case, as shown in FIG. 13, the ball connecting member 800 is assembled between the device and the device. Thus, the device and the device can be moved while being properly angled in the conduit 10 through the ball connecting member 800.

As described above, the present invention can continuously perform a series of processes consisting of washing, drying, spraying, plastering, and heat curing according to the site situation, thereby requiring time, cost, and The manpower is greatly reduced.

In the above description, for the convenience of description, preferred embodiments have been described with reference to the drawings and the components shown in the drawings, but with reference to the figures and the designations shown in the drawings as one embodiment according to the present invention. It should not be construed that the scope of the right should be construed, and that the simple substitution of a configuration having the same function as the change to the various shapes predictable from the description of the invention is within the range that can be changed by those skilled in the art for easy implementation. It will be very self-explanatory.

1: manhole 10: pipeline
20: repair device 100: cleaning device
110: base member 120: washing water spray
130: cleaning scraper 131: link
140: hydraulic apparatus 200: drying apparatus
210: base member 220: hot air generator
300: injector 310: resin tank
311: connecting flange 312: moving wheel
320: injector 400: plastering device
410: base member 420: rotating member
421: plastering plate 500: heating device
510: base member 520: heating element
600: feeder 610: base member
620: hydraulic device 630: link shaft
640: wheel 700: camera
800: ball connecting member

Claims (5)

Preparation step (S10) to block the branch pipe in the pipeline 10 and check the cracked portion to prepare for repair;
A washing step (S20) of removing contaminants attached to the inner surface by using the washing apparatus 100 moving along the pipe line 10;
A drying step (S30) of discharging high-pressure dry air into the inside of the conduit (10) cleaned using the drying apparatus (200) connected to the washing apparatus (100) or heating and drying using a heating element (S30);
A resin spraying step (S40) of spraying a high pressure resin for repair along the inner surface of the pipe line (10) dried using the spraying device (300) connected to the drying device (200);
Plastering step of uniformly applying the repairing resin sprayed through the resin spraying step (S40) to the inner surface of the pipe line 10 by using the plastering device 400 which is connected to the spraying device 300 ( S50); And
A heating step (S60) of curing the repair resin uniformly plastered on the inner surface of the conduit 10 using a heating apparatus 500 connected to the plastering apparatus 400 at high temperature;
Including,
In the resin injection step (S40), the repairing resin,
It consists of any one of the main material selected from unsaturated polyester resin, vinyl ester resin and epoxy resin, and the cured material mixed with the main material in a predetermined ratio,
In the resin for repair,
An additive having a size of 2 to 4 mm in width and made of any one material selected from nonwoven fabric and carbon fiber is mixed at a predetermined ratio,
The plastering apparatus 400 of the plastering step (S50),
A tubular base member 410 having a predetermined length; And
A rotating member 420 rotatably installed around the base member 410;
Including;
The rotating member 420,
A plurality of plastering plates 421 are radially installed to be able to draw in and out toward the inner surface of the conduit 10 by a hydraulic device.
Between the washing device 100, the drying device 200, the spraying device 300, the plastering device 400 and the heating device 500,
Each device can be positioned in the center of the conduit 10 and at the same time the transfer device 600 for providing a transfer force by the drive device and the ball connection member 800 is adjustable angle adjustable,
The transfer device 600,
A tubular base member 610 having a predetermined length;
A plurality of hydraulic devices 620 installed on the base member 610;
A link shaft 630 of a predetermined length connected to one end of the hydraulic device 620 and having an installation angle adjusted; And
A wheel 640 provided at the front end of the link shaft 630 to which a driving device is connected;
Including, non-excavated water and sewage pipe repair method, characterized in that configured to be a predetermined time difference between each process and the process.
delete delete The method according to claim 1,
In the resin for repair,
Non-excavated water and sewage pipe repair method characterized in that the pigment of different colors are further mixed according to the type of water supply and sewage.
The method according to claim 1,
The washing device 100, the drying device 200, the spraying device 300, the plastering device 400 and the heating device 500,
It is controlled to move at a speed of 30 to 60 minutes per 10M in the pipeline 10,
The heating device 500,
Non-excavation water and sewage pipe repair method characterized in that the resin for repair is heated and cured at a temperature of 80 ~ 100 ℃.

Images