KR20040022069A - Method for repairing a non-excavation drainpipe capable being facilitate sewage stream - Google Patents

Abstract

PURPOSE: A non-excavation sewer repair method is provided to support an inner peripheral surface of repair materials with a cover plate to prevent the formation of protrusions at both inclined ends as to maintain the flow of the sewage. CONSTITUTION: A repair device repairs a broken part(42) of a sewer pipe(40) laid under the ground by using an unmanned camera. The repair device includes inclined ends(14) at the outer peripheral portion. A cover plate(10) having grooves and protrusions is stacked on repair materials having Siltex(22) and nonwoven fabric(24). The cover plate stacked on the repair materials winds around the inclined ends of the repair device. The repair device moves near the broken part of the sewer line. Air is injected into the repair device to allow the attachment of the repair material to the broken part with maintaining the flow of the sewage.

Description

Method for repairing a non-excavation drainpipe capable being facilitate sewage stream

The present invention relates to a non-excavation sewer pipe repair method that can easily repair a damaged portion without digging a sewer pipe buried underground, and more particularly, to the flow of the flow rate according to the repair of a partially broken sewage pipe. The present invention relates to a sewage pipe repair method of a non-excavation type that has a smooth flow of sewage without interruption and allowing a shortening of repair time due to joining of a repair material.

In general, sewer pipes buried underground have serious problems such as soil contamination due to external leakage of sewage through damaged areas when the sewer pipes are partially damaged or cracked due to ageing or ground subsidence or impact. As a result, repairing the broken pipes is indispensable. In order to repair the damaged sewer pipes, appropriate repair methods are selected according to the characteristics of the damaged area and the surrounding conditions. Existing repair methods are the excavation type that repairs the damaged parts of the pipeline while the ground is excavated. It is divided into unmanned cameras for repairing damaged parts by using unmanned cameras to check damaged parts through external manholes through manholes and repair equipment such as packers.

However, due to various problems such as traffic problems and the complexity of the working environment, the excavation method is a non-excavation method using an unmanned camera and a simple repairing device. The followings are some of the construction methods.

Conventionally, the non-excavative repair method used in the prior art is a total repair method in which a synthetic resin pipe is entirely inserted into an abnormal section of a pipeline to repair the entire buried pipe between the manhole and the manhole, even for repairing only a specific part that is necessary. Since a separate synthetic resin pipe is inserted into the inside, there are various problems such as the necessity of various repair equipment, poor construction, extension of construction period, and excessive expenditure of construction costs due to waste of materials.

Next, when impregnating the glass fiber in the adhesive resin liquid using only the adhesive resin liquid and the glass fiber and then curing and repairing it, the damaged part is bonded and repaired using a repair material composed only of the glass fiber. Due to the weakening of the repair material strength, there is a concern that there is a gap between the pipeline and the repair material due to displacement of the repair part due to load or severe vibration, and there is a problem of reducing the exponential property or shortening the repair life due to the gap.

Next, Republic of Korea Patent Publication No. 2001-39525 discloses a cylindrical water expansion for improving the indexability through edges of both sides of the outer circumferential surface of the glass fiber layer through a stainless steel wire mesh for reinforcing strength between glass fiber layers impregnated with an adhesive resin solution. There is a method of partially repairing an abnormal part of the pipeline by using a repairing material wrapped around a rubber band.In addition, Korean Patent Publication No. 1999-64401 discloses a liner made of nonwoven fabric and carbon fiber coated with an index material on the outer peripheral surface of vinyl. Lining repair method is installed to repair by attaching to the inner circumferential surface of the sewer pipe.

However, all of the above-mentioned prior art designs have a problem that the flow rate of the sewage is not smooth because the repair material or the liner is attached with a constant thickness with respect to the inner peripheral surface of the sewage pipe, and the foreign materials are caught by the step. When the liner is completely hardened and attached to the inner surface of the sewer line, the repair device such as a packer cannot be separated, and thus, a repair time is required, and as a result, rapid repair is impossible. Let's take a closer look at the process issues.

As shown in FIG. 1, according to the conventional repairing method of a sewer pipe using a repair material or a liner, the step 4 is essentially formed when the repair material or the liner 1 is attached to the inner circumferential surface of the damaged portion 3 of the sewer pipe 2. It hardens and adheres in the state which becomes Because all of the conventional repairing materials or liners, carbon fibers or nonwoven fabrics are laminated several times on the outer circumferential surface of a repairing device such as a packer by an adhesive resin solution or an indexing material, or a stainless steel wire mesh or the like for strength and index reinforcement between these carbon fibers or nonwoven fabrics. With additional intervening water-expandable rubbers, it is hardly bonded to the inner circumferential surface of the sewer pipe by expansion of the repair device, so that the repair material or liner must be jaws so that both ends have a predetermined thickness with respect to the inner circumferential surface of the sewer pipe. In addition, the height of the jaw is relatively high for the damage portion or the size of the sewer pipe is relatively higher for the strength of the repair material or liner and the shape of the exponent.

Therefore, according to the repair method using the repair material or liner, the sewage flow is not smoothly prevented by the formation of the step which is inevitably caused by the hardened adhesion of the repair material or the liner. There is no fear that sand or other foreign matter may be caught or piled up on a step, or that damage may be caused by an impact of an object having a load. In addition, the repair material or liner coated with the adhesive resin solution or the water stopper is hardened and adhered for a predetermined time by expansion and pressure of the repair device. Since there is no separate structure that can not be separated in the state that the repair material or liner is not completely cured, the repair time is naturally delayed due to the hardening of the repair material or liner, so the repair work is not performed as quickly as possible. There is a problem with the repair method.

And, above all, according to the conventional repair method, glass fiber is used as a repair material or a liner material of sewage pipe, which is not easily decayed due to the characteristics of the glass fiber and is also harmful to the human body. The use of alternative materials is urgently needed.

The present invention is to solve all the problems according to the above-mentioned conventional repair method, the object of the present invention is to prevent any damage to the flow of sewage flow is not formed because the step is not formed even if the repaired repair the damaged portion of the sewer pipe in the non-excavated state There is no possibility of catching or accumulating various foreign materials, and it is possible to separate the repair equipment even if the medicine for attaching and hardening the sealant or non-woven fabric, which is an alternative to asbestos, which is harmless to the human body, is not completely cured. This is to provide a repair method to the sewage pipe of the non-excavation type that allows the flow of sewage to be repaired smoothly.

1 is a cross-sectional view showing a maintenance step structure of a repair material according to the conventional construction method,

2 is a perspective view of a cover plate according to the method of the present invention,

3 is a cross-sectional view taken along line III-III of FIG. 2;

Figure 4 is a cross-sectional view showing the structure of the repair material according to the construction method of the present invention,

5 is a schematic cross-sectional view of a state in which repair equipment and an unmanned curry are built in a sewer pipe according to the repair method of the present invention;

Figure 6 is an enlarged cross-sectional view showing a cross-sectional structure of the cover plate and the repair material wound on the outer peripheral surface of the repair equipment of the present invention,

7 and 8 are an enlarged side cross-sectional view and a longitudinal cross-sectional view showing a state in which the cover plate and the repair material attached to the inner circumferential surface of the sewer pipe hardened by the medicine by the repair method of the present invention;

9 is a side cross-sectional view of the sewer pipe in a state where the damaged part is repaired by the repair method of the present invention.

※ Code explanation about main part of drawing ※

10: cover plate 12: plate body

14: inclined end 16: chemical discharge hole

18: joint end 19a: locking groove

19b: gumrim jaw 20: repair

22: Siltex 24: Nonwoven

30: Pharmaceutical 40: With sewage pipe

42: damaged part 50: repair equipment

60: unmanned camera

Technical features of the present invention for achieving the object of the present invention, by using a known repair equipment and unmanned camera to repair the damaged portion without excavating the sewer pipe buried underground, as the outer peripheral surface of the repair equipment The cover plate is provided with an inclined end and is provided with a catching groove and a catching jaw for joining the joint, and a plurality of layers of the silk and the nonwoven fabric of the repairing material impregnated with the medicine are laminated, and then the repairing equipment is pushed to the damaged part of the sewer pipe. When the air conditioner is injected into the repair equipment after being placed in position, the repair material is in close contact with the damaged portion of the sewer pipe and the inner circumferential surface of the repair material is integrally installed by the cover plate so that steps are not formed at both ends of the repair material. It is in repairing the flow of sewage.

In addition, according to the repair method of the present invention, it is preferable that the cover plate is repaired by using a drug discharge hole which is further formed by medicating the impregnated with the repair material evenly to the plate body except both inclined ends.

In addition, according to the repair method of the present invention, the cover plate is preferably made of a thin stainless steel material.

In addition, according to the repair method of the present invention, it is preferable that the sealant of the repairing material is repaired by using a cut having a longer length than the nonwoven fabric.

In addition, according to the repair method of the present invention, the repair material is that the entire inner circumferential surface is installed by the cover plate to support the external drawing of the repair equipment even before the complete curing of the medicine.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view showing the structure of the cover plate 10 used in the repair method of the present invention, Figure 3 is a sectional view taken along line III-III.

2 and 3, the cover plate 10 is provided with an inclined end portion 14 bent at a predetermined inclination angle at both ends of the plate body 12, and the plate body 12 except for both inclined end portions 14 is provided. In the furnace, the medicine discharge holes 16 are formed at regular intervals so that the medicine 30 impregnated in the repair material 20 to be described later is leaked out.

In addition, the plate body 12 is formed to correspond to a plurality of engaging jaw (19a) and the engaging groove (19b) for mutually elastically overlapping the two joint ends (18) when wound to the outer peripheral surface of the repair device 40 during repair It is.

Since the cover plate 10 is located on the inner circumferential surface of the sewage pipe, rust and corrosion are prevented even when contacted with moisture, and a stainless material having good tensile strength is most preferable, but is not necessarily limited to a specific material. The thickness may also vary depending on the size of the sewer pipe, but if it is too thick, it is most preferable to use a thin plate of 0.8 mm or less in consideration of the fact that a step is formed with respect to the inner circumferential surface of the sewer pipe during repair.

In addition, the inclination angle of the two inclined end portions 16 formed of the plate body 12 of the cover plate 10 is not limited to a specific inclination angle, but a gentle inclination angle is preferable for smooth flow of the flow rate after repairing, It is most preferable to bend to have an inclination angle of 6 degrees or less.

On the other hand, Figure 4 is an excerpt sectional view showing the configuration of the repair material 20 according to the repair method of the present invention, the repair material 20 is typically a siltex (22) for maintaining the strength at the time of curing and adhesion and penetration Consists of a nonwoven fabric 24 to prevent the outflow of water, the present invention is used to cut the length of the glass fiber 22 to extend more than the nonwoven fabric 24, these repair materials 20 as needed It is laminated | stacked and used in layers, The order of the front side of these repair materials 20 is not restricted to a specific order, It is laminated | stacked and used as needed in consideration of various conditions, such as a working environment.

And the texex 22 and the nonwoven fabric 24 constituting the water-retaining material 20 is hardened and bonded integrally by the medicine 30. Siltex 22 of the present invention is a useful material that prevents environmental and health problems in advance as a replacement for asbestos, which is harmless to the human body as a material to replace the glass fiber harmful to the human body.

The medicine 30 is integrally attached to the damaged circumferential surface of the sewage pipe as a cover plate 10 that covers and supports the inner circumferential surface of the repair material 20 as well as the coupling between the siltex 22 and the nonwoven fabric 24 when repairing the sewage pipe. It is to be integrally hardened, which is generally used for repairing sewage pipes, and is not a feature of the present invention, and is a resin in which a main ingredient, which acts as an adhesive, a curing agent and an accelerator are mixed in a proportion. .

5 to 8, the maintenance state according to the present invention will be described with reference to FIG. 5, the damaged portion 42 of the sewer pipe 40 according to the present invention, such as a repairer 50 and a unmanned camera 60, such as a packer Is a view showing the process of repairing using the cover plate 10 and the repair material 20 is wound around its outer peripheral surface.

First, in order to repair the damaged part 42 of the sewer pipe 40 according to the present invention, the unmanned camera is put into the sewer pipe 40 to carry out the necessary investigation, and the sediment can be repaired according to the survey result. Necessary measures, such as dredging or installation of exponential warfare, are preceded.

Then, as shown in FIG. 5, in order to repair the damaged portion 42 of the sewer pipe 40, a repair device 50 such as a packer or a sewer pipe repair device (utility model registration No. 187255) previously registered and developed by the applicant of the present application; The cover plate 10 is first wound around the outer circumferential surface of the same repair equipment 50, and the two joint ends 18 are coupled to each other using the locking groove 19a and the locking jaw 19b, and the cover plate 10 is On the outer circumferential surface of the plate body 12, the siltex 22 and the nonwoven fabric 24 of the water-retaining material 20 impregnated with the medicine 40 are laminated several times.

The repair material 20 sequentially wound to the outer circumferential surface of the cover plate 10 wound on the repair equipment 50 may be wound while applying the medicine 30, or may be used by impregnating the drug 30 in advance. to be.

Meanwhile, the cover plate 10 and the repair material 20 wound around the outer circumferential surface of the repair equipment 50 are stacked as shown in FIG. 6, and thus, the nonwoven fabric 24 having a shorter length than this is provided between the long siltex 22. Are interposed with each other and laminated by the medicine 30.

As such, when the installation of the cover plate 10 and the repair material 20 for the repair equipment 50 is completed, the repair equipment 50 may be damaged together in the sewer pipe 40 together with the unmanned camera 60. 42, and the repair is carried out. At this time, the damaged part 42 of the sewer pipe 40 is not shown in the drawing. However, the unmanned camera 60 is connected to a monitor installed in an external work vehicle, so that the worker It becomes possible to confirm.

And, the repair equipment 50 is also not shown in the drawings, but can be controlled to move to the work position from the outside by a moving rope or other moving means, the repair equipment 50, as well known as the compressed air from the outside Through the expansion or contraction process by the operation is to harden the cover plate 10 and the repair material 20 in close contact with the damaged portion 42.

When the movement of the damaged portion 42 of the repair equipment 50 is completed, the air is injected into the repair equipment 50 from the outside and the cover plate 10 wound around its outer circumference by the expansion of the repair equipment 50 and , The water-retaining material 20 impregnated with the chemicals 30 is simultaneously held in close contact with the inner circumferential surface of the broken part 42 of the sewer pipe 40 as shown in FIGS. 7 and 8, and both inclined ends 14 of the cover plate 10 are Compared to the nonwoven fabric 24, the extended end of the longer siltex 22 is naturally bent, and each drug discharge hole 16 formed between the bent ends and the plate body 12 of the cover plate 10 is formed. The medicine 30 impregnated in the water-retaining material 20 is evenly distributed and discharged by the pressing force, so that a predetermined time elapses, the adhesive is firmly integrated by a chemical reaction.

Herein, the nonwoven fabric 24 having a shorter length than the siltex 22 has a length corresponding to the width of the plate body 12 excluding both inclined ends 14 of the cover plate 10 as shown in FIG. 7. ) Is in close contact with both inclined ends 14 according to the thickness of the repair material 20, and the extended length of the siltex 22 is the inclined ends 14 of the cover plate 10. Covered by only the medicine 30 so that the close contact space between the inner circumferential surface of the sewer pipe 40 and the two inclined ends 14 of the cover plate 10 according to the lamination of the repair material 20 is filled to some extent It is possible to exhibit a higher adhesion than when the plate 10 is attached.

Therefore, according to the repair method of the present invention, as shown in Figure 7, the repair material 20 and the cover plate 10 effectively blocks the damaged portion 42 of the sewer pipe 40 by the curing adhesive of the chemical agent 30, and at the same time the repair material 20 and the cover plate 10 are also integrally firmly attached to each other, and the water-retaining material 20 in a laminated state has both ends thereof pressed by both inclined ends 14 of the cover plate 10 to a gentle inclination angle. As it hardens and hardens, it does not interfere with the flow of the flow rate because it does not interfere with the flow rate due to the wire mesh between the glass fiber layers or the method of repairing the sewer pipe using only carbon fiber and nonwoven fabric. It is possible to quickly and flow, the inner circumferential surface of the repair material 20 is integrally bonded and supported by the cover plate 10 as the inner circumferential surface of the sewage pipe 40 and the door 20 is lifted or separated It would be solved at once.

On the other hand, according to the repair method of the present invention, since the repair material 20 is closely supported by a separate cover plate 10, the repair equipment 50 until the medicine 30 is completely cured (usually about 2 hours) The entire inner circumferential surface of the repairing material 20 is always held in close contact with the cover plate 10 even when it is pulled out before the expansion (after about 40 minutes) without being pressurized by expansion, and thus it can be hardened by itself. It also has the advantage of the method that it can shorten the repair time by half compared to the continuous use of the repair equipment until the complete curing of the drug, and thereby significantly increase the efficiency of using the equipment.

In the present invention, the cover plate 10 has been described on the basis that the drug discharge hole 16 is formed with respect to the plate body 12, even if the drug discharge hole 16 is not formed, the curing of the drug 30 By being able to be firmly attached and supported by the water retaining material 20, there is no problem in achieving the object of the present invention.

In addition, according to the present invention, the siltex 22 or the nonwoven fabric 24 of the water-retaining material 20 can be freely selected as the stacking arrangement order, and the number of laminations can be varied depending on the working environment, if necessary. Of course.

On the other hand, the repair process or the final confirmation of the damaged portion 42 of the sewage pipe 40 in the repair process is of course made by the unmanned camera (60).

Thus, as the damaged portion 42 of the sewer pipe 40 is firmly repaired by the cover plate 10 and the repair material 20 as shown in FIG. 9, the damaged portion 42 is closed and at the same time, the repaired portion of the sewage pipe 40 is The end is repaired without step by both inclined ends 16 of the cover plate 10, so that the flow of the flow rate is smooth.

According to the present invention as described above, by supporting the inner circumferential surface of the repair material to block the damaged portion of the sewage pipes integrally hardened by the cover plate provided with the inclined end portion to prevent the formation of the step of the repair material by both inclined ends smooth flow of sewage Since the repair material is integrally supported by the cover plate, it is possible to prevent the lifting of sewage pipes and the repair material and to take out the repair equipment even before the complete curing of the chemical, thereby reducing the repair time and the use of the equipment. It has the advantage of increasing efficiency.

Although the present invention has been described in the accompanying drawings, it should be understood that many modifications and changes may be made without departing from the scope of the following claims.

Claims (5)

In repairing the damaged portion 42 without excavating the sewer pipe 40 buried underground using the known repair equipment 50 and the unmanned camera 60, The outer circumferential surface of the repair equipment 50 is provided with an inclined end portion 14, and is wound and coupled with a cover plate 10 provided with a locking groove 19a and a locking jaw 19b for coupling the joint portion 18. Winding and wrapping a plurality of layers of the Siltex 22 and the nonwoven fabric 24 of the water-retaining material 20 impregnated with the drug body 30 to the outer circumferential surface of the cover plate 10 and then the repairing equipment 50 The repair material 20 is in close contact with the damaged part 42 of the sewage pipe 40 by being pushed into the damaged part 42 of the sewer pipe 40 and injecting air into the repair equipment 50. The entire inner circumferential surface of the water holding material 20 is integrally installed by the cover plate 10 so that the stepped portion is not formed at both ends of the water holding material 20 so that the sewage flow is repaired smoothly. Repair and repair of sewage pipes with smooth non-excavation method. The drug discharge hole 16 of claim 1, wherein the cover plate 10 is uniformly cured and uniformly cured with the medicine 30 impregnated with the water-retaining material 20 with respect to the plate 12 except for the inclined ends 14. ) Is a non-drilling sewage pipe repair method, characterized in that the sewage flow is smooth, characterized in that the repair using a more formed. The method of claim 1 or 2, wherein the cover plate (10) is characterized in that the stainless steel of the thin plate sewage flow smoothly unexcavated sewer pipe repair method. According to claim 1, wherein the sealant 22 of the repair material 20 is repaired by using a cut to an extended length than the non-woven fabric 24, the sewage flow is smoothly repaired by a non-drilling sewage pipe Method. According to claim 1, The repair material 20 is that the entire inner circumferential surface is installed by the cover plate 10 is supported by the outside of the repair equipment 50, even before the complete curing of the medicine 30 is possible Non-excavation sewage pipe repair method with smooth flow of sewage.