KR102644212B1 - How to repair the junction of sewer pipe and drain pipe for manhole - Google Patents

Abstract

The present invention relates to a method of repairing the joint of a sewage pipe and a drain pipe for a manhole that can be quickly repaired when a water leak occurs at the joint of a sewage pipe and a drain pipe connected to a manhole due to weak ground or external pressure,
A pipe demolition step (S100) in which the existing pipe used as an existing buried sewer pipe or drain pipe is demolished after digging around the manhole (10) where the water leak occurred, and a connection groove (11) formed on the side wall of the manhole after the pipe is demolished. ), and the new pipe positioning step (S200) of penetrating the new pipe (20) into the inside of the manhole and using clay kneaded on the inside and outside based on the connection groove (11) formed on the side wall of the manhole. A clay application step (S300) to block sewage and drainage leaking from the inside of the manhole to the outside by blocking the leaking sewage and drainage, and tensile strength strengthening means (40) at the front and rear positions based on the applied clay. A step (S400) of embedding/hardening the tensile force strengthening means in which the clay is buried inside the clay and then cured by applying a hardener, and a mortar curing/hardening step in which mortar is applied to each of the outer directions of the tensile force strengthening means for curing and hardening. It consists of a step (S500) and a finishing step (S600) in which the mortar is cured and hardened, and then the area around the manhole is restored and the surrounding area is cleaned up.

Description

{How to repair the junction of sewer pipe and drain pipe for manhole}

The present invention relates to a method of repairing the joint of a sewer pipe and a drain pipe for a manhole, and more specifically, a sewer pipe for a manhole that can be quickly repaired when a water leak occurs at the joint of a sewage pipe and a drain pipe joined to a manhole due to ground weakness or external pressure. This relates to a method of repairing the joints of drain pipes.

In general, a manhole is a place where the thickness or direction of the pipe changes, a starting point, intersection, or the middle point of a long straight line for the purpose of inspecting, repairing, or cleaning water pipes, sewer pipes, or wiring buried in the ground. It is a pipe-shaped facility that is installed by digging a trench.

For example, sewer manholes filter out various types of dirt and debris, allowing sewage to flow smoothly and preventing pipes from becoming clogged.

These manholes are manufactured at a production plant or by curing concrete into a tubular shape using formwork at the installation site, and pipes buried underground are connected to the manhole so that it communicates with the space inside the manhole. For this reason, pipe connection grooves in manholes may be formed in advance during the manufacturing process or drilled during construction.

When connecting a pipe to a pipe connection groove, penetrate the tip of the pipe into the pipe connection groove and fill the gap between the outer circumference of the pipe and the pipe connection groove, that is, the joint, with mortar to strengthen the joint and maintain watertightness. Finishing is being done.

However, in the joint finishing method described above, a gap is created between the manhole and the pipe (sewage pipe or drain pipe) due to the shrinkage force between the pipe and the mortar, and this gap is also caused by changes in terrain and external pressure from vehicles. As a gap occurs, water leakage occurs at the same time.

Although these water leaks cause contamination of the surrounding soil environment or generate strong odors, the repair process can be said to be no different from the initial construction process.

In particular, during the repair process, sewage and wastewater continuously flow into the inside of the manhole, so when using mortar, the curing time is long and the connection is difficult, so even after repair, there is a possibility that water leaks may occur under the pipe.

In addition, because rats sometimes create holes during the curing process, it was difficult to repair quickly and ensure airtightness.

1. Utility model application No. 20-2003-0034890 (Design name: Stop pipe for connecting manhole and sewer pipe) 2. Utility model application No. 20-2004-0008538 (Design name: Sealing packing of stop pipe for manhole) 3. Patent Application No. 10-2005-0051043 (Title of invention: Structure of stop pipe for manhole connection to prevent water leakage) 4. Utility model application No. 20-2007-0015814 (Design name: Stop end pipe and corrugated steel pipe for manhole)

Accordingly, the present invention aims to recognize the above-mentioned problems and propose solutions to them. This allows rapid repairs to be made even at sites where sewage and drainage water leak when water leaks occur at the joint between a manhole and a pipe, and at the same time prevents damage that may occur during the repair process. The purpose is to provide a repair method for the joints of sewer pipes and drain pipes for manholes that can block water leaks and ensure airtightness.

The method of repairing the joint of the manhole sewer pipe and drain pipe of the present invention to achieve the above object is to dig up the area around the manhole (10) where the water leak occurred and then remove the existing buried sewer pipe or the existing pipe used as the drain pipe. A pipe removal step (S100), a new pipe positioning step (S200) of penetrating and positioning the new pipe (20) into the connection groove (11) formed on the side wall of the manhole after the pipe is removed, and the side wall of the manhole Clay application step (S300) to block sewage and drainage leaking from the inside of the manhole to the outside by blocking the leaking sewage and drainage using clay kneaded on the inside and outside based on the connection groove 11 formed in , a step (S400) of embedding/curing the tensile strength strengthening means (S400) in which the tensile strength strengthening means (40) are embedded in the interior of the clay at positions in the front and rear directions based on the applied clay and then hardened by applying a hardener; and the tensile strength strengthening means (S400). A mortar curing/hardening step (S500) in which mortar is applied and cured by applying a hardener to each of the outer directions, and a finishing step (S600) in which the area around the manhole is restored and cleaned up after the mortar curing and hardening. It is characterized by consisting of.

At this time, the clay may be mixed with 10 to 20% by weight of a thickener based on the total weight of the clay.

In addition, the tensile strength strengthening means is characterized in that it is one selected from glass fiber or a piece of mesh made of metal or synthetic resin.

In addition, the thickener is characterized in that it is one selected from rubber latex or xanthan gum.

The method of repairing the joint of a manhole sewer pipe and a drain pipe according to the present invention, which has the characteristics described above, is easy to block water because the repair is performed using clay in a paste state with good wettability even in the process of sewage and drainage leaking to the outside of the manhole. This allows for quick repairs, and the strength is improved after repairs, which has the effect of preventing cracks in joints or separation of pipes from manholes.

1 is a construction process block diagram showing a preferred embodiment of the present invention.
Figure 2 is an illustration of a construction cross-section showing a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in detail according to the attached drawings and preferred embodiments.

First, the method of repairing the joint of a manhole sewer pipe and a drain pipe provided by the present invention is to dig up the area around the manhole 10 where water leakage occurred, as shown in Figures 1 and 2, and then replace the existing buried sewer pipe, drain pipe, or rainwater pipe. Remove the existing pipe used (S100).

After dismantling the existing pipe as described above, the new pipe 20 is passed through the connection groove 11 formed on the side wall of the manhole and placed in the correct position (S200).
After the new pipe is positioned, as shown in FIG. 2, the inside of the manhole is treated to block leaking sewage and drainage using clay kneaded on the inside and outside based on the connection groove 11 formed on the side wall of the manhole. Clay (30) is applied to block sewage and drainage leaking to the outside (S300).

Even at the moment of removing the existing pipe and placing the new pipe (20) in place, sewage or drainage flows into the inside of the manhole, even if it is not a large amount, and the inflowing sewage or drainage flows into the gap formed between the new pipe and the connection groove (11). Through this, sewage or sewage flows out of the manhole, and this is blocked using kneaded clay to facilitate subsequent processes.

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After applying the clay as described above, the tensile strength strengthening means 40 are embedded in the interior of the clay at positions in the front and rear directions based on the applied clay, and then the hardener 50 is applied to harden (S400).

At this time, as the tensile strength strengthening means 40, any one selected from glass fiber, metal, or synthetic resin material may be used, and two or more types may be mixed.

Mortar 60 is applied to each outer side of the tensile strength strengthening means, and then curing and hardening is performed by applying a hardener 50 (S500).

And after the curing and hardening of the mortar, the area around the manhole is restored and cleaned up and finished (S600), so that the water leak phenomenon occurring at the joint 70 of the manhole can be repaired, and above all, the sewage water leaking to the outside of the manhole Because it is easy to block water and drains using clay, rapid repair work is possible.

Meanwhile, the clay may be mixed with 10 to 20% by weight of a thickener based on the total weight of the clay, and any one selected from rubber latex or xanthan gum may be used as the thickener.

When repairs are made using the method described above, the repair work can be made easier because the water is blocked quickly. When kneading the clay, the viscosity causes the feeling of heterogeneity due to the material difference between the manhole wall and the pipe to be alleviated to some extent. This can prevent separation between the liver.

Accordingly, airtightness is improved, and by applying a hardener, rigidity and speed of work can be provided.

Although the embodiments of the present invention have been described, those skilled in the art can understand the present invention by adding, changing, deleting, or adding components without departing from the spirit of the present invention as set forth in the patent claims. Various modifications and changes may be made, and this will also be included within the scope of the rights of the present invention.

S100: Pipe demolition stage
S200: New pipe positioning stage
S300: Clay application step
S400: Tensile strengthening means embedding/hardening stage
S500: Mortar curing/hardening stage
S600: Finishing stage
10: Manhole 11: Connection groove
20: New pipe 30: Clay
40: Tensile strength strengthening means 50: Hardener
60: Mortar 70: Joint

Claims (4)

A pipe demolition step (S100) of excavating the area around the manhole (10) where the water leak occurred and then demolishing the existing buried sewer pipe or existing pipe used as a drain pipe; and,
A new pipe positioning step (S200) of penetrating and positioning the new pipe 20 into the connection groove 11 formed on the side wall of the manhole after the pipe is removed; and,
Applying clay to block sewage and drainage leaking from inside the manhole to the outside by blocking sewage and drainage using clay kneaded on the inside and outside based on the connection groove (11) formed on the side wall of the manhole. Step (S300); and,
A tensile strength strengthening means embedding/curing step (S400) in which the tensile strength strengthening means 40 are embedded in the interior of the clay at positions in the front and rear directions based on the applied clay, and then a hardener is applied to harden the clay. and,
A mortar curing/hardening step (S500) of curing and hardening by applying a hardener after applying mortar to each of the outer directions of the tensile strength strengthening means; and,
A finishing step (S600) in which the mortar is cured and hardened, and then the area around the manhole is restored and the surrounding area is cleaned up; A method of repairing the joints of sewer pipes and drain pipes for manholes, characterized in that it consists of.
According to paragraph 1,
A method of repairing the joint of a sewer pipe and a drain pipe for a manhole, characterized in that 10 to 20% by weight of a thickener based on the total weight of the clay can be mixed with the clay.
According to paragraph 1,
A method of repairing the joint of a sewer pipe and a drain pipe for a manhole, wherein the tensile strength strengthening means is one selected from glass fiber or a piece of mesh made of metal or synthetic resin.
According to paragraph 2,
A method of repairing the joint of a sewer pipe and a drain pipe for a manhole, wherein the thickener is one selected from rubber latex or xanthan gum.