KR102603946B1 - Rainwater inflow control system of sewage pipe with improved seismic function - Google Patents

Abstract

The present invention relates to a storm water inflow control system for sewer pipes with improved seismic function. More specifically, when constructing a large manhole, the manhole is divided into multiple segments to reduce weight and volume, thereby improving transportation convenience and laminated bonding during construction. Customized assembly improves construction convenience, reduces the risk of safety accidents, and shortens construction time. The improved sewer manhole structure increases earthquake resistance and controls rainwater inflow, preventing damage to the manhole due to overload. This relates to a stormwater inflow control system for sewage pipes with improved earthquake resistance to prevent the rainwater inflow.

Description

Rainwater inflow control system of sewage pipe with improved seismic function}

The present invention relates to a rainwater inflow control system for sewer pipes with improved earthquake resistance in the field of sewer pipe technology. More specifically, when constructing a large manhole connected to a sewer pipe, the manhole or manhole structure is divided into a number of segments to reduce the weight and volume. It improves the convenience of transportation by reducing the risk of safety accidents by improving the convenience of construction by custom-assembling it by lamination during construction. In addition, the manhole structure for sewer pipes has been improved to shorten construction time, and it is possible to control rainwater inflow while increasing earthquake resistance. This relates to a storm water inflow control system for sewage pipes with improved seismic function so that manhole damage due to overload can be prevented in advance.

In general, many various facilities, such as water pipes, sewer pipes, power cables, and communication cables, are buried underground under roads, and these various facilities must be repaired from time to time as necessary.

Therefore, manholes are constructed at regular intervals for maintenance of various facilities.

And at the bottom of the manhole, a horizontal pipe is connected to form a path for moving sewage or rainwater to a sewage treatment plant or river.

At this time, on roads where manholes and horizontal pipes are buried, the ground subsides due to repetitive loads depending on the driving of cars or the passage of people, and this ground subsidence occurs differently depending on the use and situation of the ground and is very uneven. Differential settlement occurs.

Accordingly, the connection area between the manhole and the horizontal pipe acts as a vulnerable part of the manhole structure, and cracks and partial destruction frequently occur at the connection area of the horizontal pipe.

Furthermore, because the destruction of the horizontal pipe connection part can be recognized only after a serious outflow of sewage or rainwater has occurred due to the nature of the part being buried in the ground, the resulting damage tends to be expanded.

Accordingly, there is a need for a manhole structure that firmly combines the manhole and the horizontal pipe, maintains watertightness, and is easy to construct, so a published patent has been disclosed having an improved manhole structure such as the [Prior Art Document] described below.

However, when the manhole is large rather than small, there are many limitations in installing the manhole body by making it a huge cylinder. In other words, not only are there problems arising in transporting it to the installation point, but also difficulties in lifting and constructing it and safety accidents caused by heavy objects can result in serious casualties.

In addition, in the case of conventional manholes connected to sewer pipes, when the amount of rainwater inflow increases, the manhole no longer functions properly and causes manhole damage.

Republic of Korea Patent Publication No. 10-2022-0112439 (2022.08.11.) Horizontal pipe coupling structure of manhole

The present invention was created to solve various problems in the prior art as described above. When constructing a large manhole, the manhole is divided into multiple segments to reduce weight and volume, improve transportation convenience, and stack them during construction. The convenience of construction is improved through custom assembly by splicing, reducing the risk of safety accidents, and the improved sewer manhole structure to shorten construction time increases earthquake resistance while controlling rainwater inflow, preventing damage to manholes due to overload. The main purpose is to provide a storm water inflow control system for sewer pipes with improved earthquake resistance to prevent damage.

The present invention is a means to achieve the above-mentioned object, and has an earthquake-resistant function constructed by stacking a plurality of segments including the first manhole segment 100, the second manhole segment 110, and the third manhole segment 120 up and down. In an improved sewage pipe stormwater inflow control system;

The first, second, and third semicircular watertight reinsertion grooves (102, 112, and 122) are recessed on surfaces where the first manhole segment (100), second manhole segment (110), and third manhole segment (120) are in contact with each other; The ring-shaped watertight material 130 is inserted into the first, second, and third watertight reinsertion grooves (102, 112, and 122) so that each segment engages with each other to seal the contact surfaces of the first, second, and third manhole segments (100, 110, and 120); Mortar anchor grooves 140 are formed at intervals from the first, second, and third watertight reinsertion grooves 102, 112, and 122, respectively; A mortar injection hole 150 communicating with the mortar anchor groove 140 is formed on a portion of the circumference of the first, second, and third manhole segments (100, 110, and 120), and the first, second, and third manhole segments (100, 110, and 120) are stacked. In one state, mortar is injected into the mortar injection hole 150 so that the mortar is filled, hardened, and anchored in the mortar anchor groove 140 and the mortar injection hole 150;

An insertion cup portion 200 is formed around the upper periphery of the second and third manhole segments 110 and 120, and an assembly groove 210 is formed on the lower peripheral surface of each segment by the insertion cup portion 200;

An insertion end 220 inserted into the assembly groove 210 protrudes around the bottom of the first and second manhole segments 100 and 110;

A cushioning sheet 230 is interposed between the outer peripheral surface of the insertion end 220 and the inner peripheral surface of the assembly groove 210;

A pump 300 with a built-in battery is fixed inside the lower surface of the lid 160, a suction pipe 310 and a drain pipe 320 are piped to the pump 300, and a built-in controller is installed on the lower surface of the lid 160. Provided is a rainwater inflow control system for sewage pipes with improved earthquake resistance, which is driven according to a detection signal from an installed water detection sensor 330 and controls to pump out water.

According to the present invention, when constructing a large manhole, the manhole is divided into a number of segments to reduce the weight and volume to improve transportation convenience, and the risk of safety accidents is reduced by improving construction convenience by custom-assembling it by layering and joining during construction. In an improved sewer manhole structure that can shorten construction time, improved seismic resistance can be achieved while controlling rainwater inflow, thereby preventing damage to manholes due to overload.

Figure 1 is an exemplary exploded cross-sectional view showing the installation structure of a sewer pipe-connected manhole with improved earthquake resistance according to the present invention.
Figure 2 is an exemplary plan view showing the assembled state of Figure 1.

Hereinafter, preferred embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

Prior to describing the present invention, the following specific structural and functional descriptions are merely illustrative for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms. It should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the specification. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

The rainwater inflow control system for sewer pipes with improved earthquake resistance according to the present invention is utilized during the construction of large manholes.

In other words, by dividing the large manhole into a number of segments and assembling them in a stacked manner, it is possible to obtain convenience in transportation, convenience in construction, and reduction in the risk of safety accidents.

More specifically, as shown in FIGS. 1 and 2, the manhole according to the present invention may be composed of a first manhole segment 100, a second manhole segment 110, and a third manhole segment 120.

In this case, in the present invention, three segments have been described as an example, but of course, if the large manhole is larger and longer, it can be divided into more segments.

In particular, the first, second, and third manhole segments 100, 110, and 120 according to the present invention are characterized in that they do not use separate external fixing members, such as bolts, anchors, or clamps, to fix them to each other.

When using these, after stacking each segment, the work of binding them together must be performed again, which is another task and causes the risk of safety accidents due to working at heights, and there is also a risk of the segments falling over during work.

Accordingly, in the present invention, the work is completed simply by stacking, and a fixing method is used in which mortar is injected through a grounding method and automatically anchored.

For this purpose, semicircular first, second, and third watertight reinsertion grooves 102, 112, and 122 are recessed on the surfaces where the first manhole segment 100, second manhole segment 110, and third manhole segment 120 are in contact with each other, respectively. is formed

At this time, the ring-shaped watertight material 130 is inserted into the first, second, and third watertight reinsertion grooves (102, 112, and 122) so that each segment engages with each other to completely seal the contact surfaces of the first, second, and third manhole segments (100, 110, and 120). I do it.

Here, it is preferable to use BWS (Bentonite Water Stop) as the watertight material 130, which is formed by compression molding sodium bentonite, which has a high expansion property of up to 16 times the volume when in contact with water, and then forming the surrounding surface. It is processed to a certain size by blocking it with mesh.

In addition, mortar anchor grooves 140 are formed at intervals from the first, second, and third watertight reinsertion grooves 102, 112, and 122, respectively.

The mortar anchor groove 140 is also formed along the circumference because the first, second, and third manhole segments 100, 110, and 120 are cylindrical.

In addition, a mortar injection hole 150 communicating with the mortar anchor groove 140 is formed on a portion of the circumference of the first, second, and third manhole segments 100, 110, and 120.

Therefore, when mortar is injected into the mortar injection hole 150 in a state in which the first, second, and third manhole segments 100, 110, and 120 are stacked, the mortar is filled into the mortar anchor groove 140 and the mortar injection hole 150, When it hardens later, it becomes an anchor and has the effect of firmly binding the first, second, and third manhole segments (100, 110, and 120).

At this time, in order to maximize the anchoring effect, it is better to pour mortar after inserting a few reinforcing bars into the mortar injection hole 150 and the mortar anchor groove 140.

In addition, the mortar is not a simple cement-sand mixture, but is made of a special ingredient that has miscibility and cement neutralization prevention effects, enables long life, and has high resistance to water.

For this purpose, the mortar according to the present invention contains 35 parts by weight of Portland cement, 25 parts by weight of sand, 5.5 parts by weight of cypress oil, 5 parts by weight of sodium xylene sulfonate, 4.5 parts by weight of cerium oxide powder, and dimethyl acrylamide for 100 parts by weight of water. 8.5 parts by weight, 2.5 parts by weight of 2-phenylimidazole, 3.5 parts by weight of water-soluble acrylic resin, sodium-citrate (Na ₃ C ₆ H ₅ O ₇ ) and ferrous sulfate (FeSO _{4.7H 2} O). : Use 8.5 parts by weight of the mixture mixed at a weight ratio of 1.

At this time, Portland cement is used for rapid hardening.

In this case, cypress oil is an oil extracted from the cypress tree that improves the flowability of the mortar and enhances its ability to penetrate deep.

In addition, sodium xylene sulfonate increases the miscibility between components, strengthens binding stability, improves anchoring ability, and prevents fluffing.

In addition, cerium oxide powder is a metal oxide that increases frictional resistance, improves interfacial layer separation inhibition, and strengthens anchoring properties.

In addition, dimethylacrylamide increases the fluidity and flowability of mortar, suppresses cracking by preventing shrinkage, and has high water resistance.

In addition, 2-phenylimidazole reduces the drying shrinkage rate of the mortar, prevents deformation of the anchor, and increases crack resistance.

In addition, water-soluble acrylic resin is added to increase occlusion, strengthen the anchoring effect of ingredients, increase miscibility, and increase viscosity to increase flowability.

Lastly, sodium-citrate (Na ₃ C ₆ H ₅ O ₇ ) is added to form a waterproof complex, and ferrous sulfate (FeSO _{4.7H 2} O) is added to iron-citrate without adding a separate pH adjuster. Neutralization of concrete can be prevented by creating chelating compounds.

Meanwhile, a lid 160 is assembled on the upper part of the third manhole segment 120, and the lid 160 has an outer diameter smaller than the outer diameter of the third manhole segment 120 by the step T. It is configured so that harmful gases generated inside the manhole can be automatically discharged to prevent gas poisoning when workers enter the system.

For this purpose, at least one semicircular discharge hole 162 is formed around the lid 160, and the semicircular discharge hole 162 penetrates the lid 160 in the direction of the circle center and then penetrates vertically to the bottom. One discharge passage 164 is connected.

Therefore, even if the lid 160 is closed, there is no problem in discharging the harmful gas into the discharge hole 162 through the discharge passage 164.

By doing this, safety accidents can also be prevented.

In particular, as shown in Figure 2, an insertion cup portion 200 is formed around the top of the second and third manhole segments 110 and 120, and an assembly groove 210 is formed on the bottom peripheral surface of each segment by the insertion cup portion 200. is formed

And, an insertion end 220 inserted into the assembly groove 210 protrudes around the lower ends of the first and second manhole segments 100 and 110.

At this time, a cushioning sheet 230 is interposed between the outer peripheral surface of the insertion end 220 and the inner peripheral surface of the assembly groove 210.

When the cushioning sheet 230 has a certain thickness, it is manufactured in the form of highly elastic non-woven fabric, more preferably in the form of a mesh, to enhance earthquake resistance by suppressing distortion or twisting due to cushioning when an external force is applied.

This cushioning sheet 230 contains 6.5 parts by weight of C ₁₈ H ₂₄ N ₂ , 5.5 parts by weight of PPO (POLYEHENYLENE OXIDE), 5.0 parts by weight of nonylphenol ethoxylate, 5.5 parts by weight of azelaic acid, and guar, based on 100 parts by weight of polyethylene resin. It can be molded with a composition that mixes 10 parts by weight of gum, 5 parts by weight of dimethylbenzylidene sorbitol, 10 parts by weight of HFP (Hexafluoropropylene), 10 parts by weight of sodium fusidate hydrogel, and 5 parts by weight of sodium alkylbenzenesulfonate.

At this time, C ₁₈ H ₂₄ N ₂ (N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine) prevents thermal oxidation, suppresses discoloration, and enhances durability.

In addition, PPO resin (POLYEHENYLENE OXIDE) is a high-temperature heat-resistant resin. It has electrical insulation due to low moisture absorption (water resistance), excellent dimensional stability, excellent hardness and impact strength, and has the advantage of being lightweight and capable of being lightweight.

In particular, nonylphenol ethoxylate is added to increase flexural strength by increasing occlusion with the resin and provide a surface active function, and especially to obtain an antioxidant effect.

In addition, azelaic acid maintains dimensional stability by suppressing heat shrinkage after molding.

In addition, guar gum increases waterproofing while maintaining tensile strength and has swelling and absorbing properties, thereby increasing cushioning properties.

At this time, dimethylbenzylidene sorbitol increases the bonding force between components and prevents the wear resistance of the molded product from decreasing.

In addition, sodium oxide hydrogel is a highly hygroscopic white powder of sodium oxide oxide, and the hydrophilic polymer swells as it contains water to form a hydrogel, thereby forming a three-dimensional network structure and a microcrystalline structure, providing moisture resistance and buffering properties. It is added to strengthen moisture resistance, cushioning, and sound absorption.

In addition, sodium alkylbenzenesulfonate has the characteristic of not only strengthening acid resistance, but also strengthening deterioration resistance and increasing chemical resistance.

In addition, a battery-embedded pump 300 is fixed to the inside of the lower surface of the cover 160, and a suction pipe 310 and a drain pipe 320 are piped to the pump 300, and a random position of the manhole or the cover 160 is installed. ), a controller installed in a watertight state is driven according to a detection signal from the water detection sensor 330 installed on the bottom of the lid body 160 to control and monitor the pumping out of water.

Therefore, when the water level decreases, the operation of the pump is automatically stopped.

At this time, an administrator must be set up to manage the battery periodically.

By doing this, manhole damage due to excessive inflow of rainwater can be prevented.

100: first manhole segment 110: second manhole segment
120: Third manhole segment

Claims (1)

In a rainwater inflow control system for a sewer pipe with improved seismic function, which is constructed by stacking a plurality of segments including the first manhole segment 100, the second manhole segment 110, and the third manhole segment 120 up and down;
The first, second, and third semicircular watertight reinsertion grooves (102, 112, and 122) are recessed on surfaces where the first manhole segment (100), second manhole segment (110), and third manhole segment (120) are in contact with each other; The ring-shaped watertight material 130 is inserted into the first, second, and third watertight reinsertion grooves (102, 112, and 122) so that each segment engages with each other to seal the contact surfaces of the first, second, and third manhole segments (100, 110, and 120); Mortar anchor grooves 140 are formed at intervals from the first, second, and third watertight reinsertion grooves 102, 112, and 122, respectively; A mortar injection hole 150 communicating with the mortar anchor groove 140 is formed on a portion of the circumference of the first, second, and third manhole segments (100, 110, and 120), and the first, second, and third manhole segments (100, 110, and 120) are stacked. In one state, mortar is injected into the mortar injection hole 150 so that the mortar is filled, hardened, and anchored in the mortar anchor groove 140 and the mortar injection hole 150;
An insertion cup portion 200 is formed around the upper periphery of the second and third manhole segments 110 and 120, and an assembly groove 210 is formed on the lower peripheral surface of each segment by the insertion cup portion 200;
An insertion end 220 inserted into the assembly groove 210 protrudes around the bottom of the first and second manhole segments 100 and 110;
A cushioning sheet 230 is interposed between the outer peripheral surface of the insertion end 220 and the inner peripheral surface of the assembly groove 210;
A built-in battery pump 300 is fixed to the inside of the lower surface of the lid 160 assembled on the upper part of the third manhole segment 120, and a suction pipe 310 and a drain pipe 320 are piped to the pump 300. , the built-in controller is driven according to the detection signal of the water detection sensor 330 installed on the bottom of the lid 160 to control the pumping of water,
The watertight material 130 uses BWS (Bentonite Water Stop), and the BWS is compressed and molded with sodium bentonite, which has a high expansion property of up to 16 times the volume when in contact with water, and then the circumferential surface is blocked with a mesh to keep it constant. Processed to size,
The mortar has miscibility and the effect of preventing cement neutralization, enabling long life and water resistance, by adding 35 parts by weight of Portland cement, 25 parts by weight of sand, 5.5 parts by weight of cypress oil, and 5 parts by weight of sodium xylene sulfonate per 100 parts by weight of water. Parts by weight, 4.5 parts by weight of cerium oxide powder, 8.5 parts by weight of dimethylacrylamide, 2.5 parts by weight of 2-phenylimidazole, 3.5 parts by weight of water-soluble acrylic resin, sodium-citrate (Na ₃ C ₆ H ₅ O ₇ ) and sulfuric acid. Mix 8.5 parts by weight of a mixture of ferrous iron (FeSO _{4.7H 2} O) at a weight ratio of 2:1,
The lid body 160 has an outer diameter smaller than the outer diameter of the third manhole segment 120 by the step T, so that harmful gases generated inside the manhole can be automatically discharged,
At least one semicircular discharge hole 162 is formed around the lid 160, and the semicircular discharge hole 162 has a discharge flow path that penetrates the lid 160 in the center direction and then vertically penetrates the bottom. (164) A storm water inflow control system for sewage pipes with improved earthquake resistance, characterized in that it is connected.

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