KR20030034552A - Construction method of flume pipeline using unvulcanize adhesion rubber - Google Patents

Abstract

PURPOSE: A method for repairing a pipeline by using viscous non-vulcanized rubber is provided to obtain a doubly-constructed effect with one-time work by impregnating resin in a polyester pelt sheet and using viscous non-vulcanized rubber for water blocking. CONSTITUTION: A method for repairing a pipeline by using viscous non-vulcanized rubber comprises the steps of cleaning the pipeline(S14), preparing a repairing material and mounting the material(S16), preparing a rubber sheet(S16a), preparing synthetic pelt impregnated in normal temperature hardening resin(S16b), attaching the rubber sheet to the synthetic pelt(S16c), attaching a PVC(Polyvinyl Chloride) film sheet to an un-manned repairing winding machine(S16d), mounting the repairing material on the winding machine(16e), entering the pipeline(S18), and compressing the non-vulcanized rubber to a damaged portion(S20).

Description

Pipeline repair construction method using adhesive unvulcanized rubber {CONSTRUCTION METHOD OF FLUME PIPELINE USING UNVULCANIZE ADHESION RUBBER}

The present invention relates to a construction method for repairing a damaged sewage pipeline by using an adhesive unvulcanized rubber sheet in repairing a damaged sewage pipeline, which is indexed with an adhesive unvulcanized rubber sheet and impregnated a resin in a polyester felt sheet. The present invention relates to a method for repairing pipelines using sticky unvulcanized rubber, which obtains the effect of double-indexing and reinforcing at the same time by only one construction by reinforcing.

Sewage pipes are used in sewage facilities, and a number of pipes made of cast resin pipes and concrete pipes are made of synthetic resins, forming sewage pipes and buried underground, where sewage and industrial polluted sewage flows through the pipes. It is collected at the processing plant, purified and then processed.

Recently, in order to protect nature and prevent environmental pollution, in order to protect the nature, sewage, which is the domestic wastewater, is first drained from ordinary households, etc. before being reached to the sewage treatment plant, so that careful attention is not taken to contaminate groundwater or soil. Although it is required, concrete sewage pipelines buried underground cause cracks or holes to occur, or gaps due to stepping of concrete sewage pipelines due to floating settlements and pipe joints in the ground. Industrial sewage leaks and leaks underground, contaminating groundwater or soil, or, conversely, clean, uncontaminated groundwater floods the sewer line, causing waste of groundwater. Accordingly, in order to prevent the contamination of groundwater or soil, in order to prevent the contamination of groundwater or soil due to the occurrence of holes or breakage in the sewer pipes buried underground, in the past, contaminated sewage should be prevented from leaking underground. Excessive expenditure and time consuming and traffic was inconvenient by digging underground, digging up the sewage pipelines, connecting them with new ones, and repairing the sewer pipelines by filling up the ground.

In recent years, developed countries have been developed and introduced a method of repairing sewage pipelines by various non-excavation methods, and recently, Korea has become interested in the severe damage caused by groundwater and soil contamination caused by damage to sewage pipelines. As a situation of interest in repairing damaged sewage pipes, as a remedy for the repair of damaged sewage pipes, an index filling method, an epoxy coating method, a reinforcing lining method, and an index rubber ring insertion method have been introduced and applied.

The index fill method is a method developed in the United States that applies mainly to repairing areas where infiltration water from conduits occurs. This method is a method of blocking the ingress of water from the outside by injecting urethane or epoxy chemicals in the defective position found during watertight inspection. This method is easy to install and prevents water from invading from the outside, so the work time is short and accurate indexing is possible. However, since it is not a repairing method of reinforcement concept, it is not suitable for repairing parts requiring pipe breakage or reinforcing connection joints, and intrusion of horizontal cracks longer than the length of a packer is impossible to repair.

Epoxy coating is a method developed in Switzerland and is mainly applicable to cracks, breaks or joints in pipelines. This method uses Carter robot to remove obstacles, grind the repaired part, and then completely dry it with a hot air blower and then spray it with epoxy resin and apply it for a long time, so construction cost is very expensive and construction time is very late.

Reinforcing lining is the most widely used method in recent years, and it is mainly applied to repairing areas where leaks such as cracks, breakages, and joints of pipes occur. In the construction method, check the presence of obstacles on the damaged part of the pipeline, completely remove the foreign substances by high-pressure jet cleaning, impregnate the resin with the glass fiber felt, and then install the glass fiber felt impregnated with the resin in the unmanned repair machine. After towing, press with compressed air. This method is a construction method of pipeline reinforcement concept, which is impossible for index purposes and has only a simple reinforcement concept.

The index rubber ring inserting method (Snap Lock method) is a method developed in Japan that is mainly applied to repairing parts that are damaged or leak without crack protruding part of the pipe line. The rubber tubing (rubber sleeve) of the water-expandable rubber that protrudes from both ends is attached to the stainless steel sleeve and closely mounted on the damaged part of the pipeline, so that the water leaks in contact with the water-expanded rubber, thereby expanding the volume of the water-expanded rubber. It is a method of indexing by blocking the sewage that leaks. If the construction method is based on the repair material, the construction is completed and the work time is very simple. However, the water-expanded rubber mounted on the inner side of the sewer pipe Due to the step with the cross section, there is a fear that foreign matters are deposited as the sewage flows down after the repair and repair of the damaged pipeline.

As described above, the conventional sewage pipe repairing method has advantages and disadvantages according to the construction method, and the repairing method is roughly divided into an exponential method for indexing leakage or flooding and a reinforcing method for reinforcing a damaged pipeline. However, until now, the repairing method, whether it is exponential method or reinforcement method, has no method to prepare for leakage and inundation due to the damage that may occur after the completion of repairing damaged pipelines. It can be done later, but the construction by the reinforcement method is a problem that must be reconstructed after removing the existing reinforcing sheet in case of inundation or leakage later.

The present invention is to solve such a problem, the object is that the sewage pipes consisting of sewers formed by embedding circular pipes, such as cast iron pipes, cement pipes, and plastic pipes in the basement is damaged due to the aging of some parts, or floating settlement ( By repairing the sewer pipe damaged by various causes such as cracks or other causes such as the step between the pipe and the pipe, repairing the sewage pipe damaged by non-excavation method. To provide a repair method. Another object of the present invention to improve and supplement the shortcomings of the exponential method and the reinforcement method, which is a repair method of the conventional sewage pipe, to obtain the effect of the simultaneous construction of the exponential method and reinforcement method by only one construction of the damaged sewage pipe, It is to provide a repair method for sewage pipes using a new type of sticky unvulcanized rubber that prevents damage to pipes that occur after repairing and prevents leakage and flooding continuously.

1 is a view for schematically explaining a manufacturing process of the pipeline repair repair material according to a preferred embodiment of the present invention;

2 is a side view and a plan view of the repairing material;

Figure 3 is a flow chart for overwork repair construction method according to a preferred embodiment of the present invention;

4 is a perspective view of a state in which the repair material is mounted on the unmanned repair fitting;

5 is a view showing an unmanned repair fitting into the sewer pipe;

6 is a view showing a process of compressing the repair material on the inner surface of the sewer pipe by injecting compressed air into the unmanned repair fitting;

7 is a view showing a sewage pipe in which the repair material is constructed by the construction method according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

110: repair

112: room temperature curing resin

114: synthetic fiber felt

116: unvulcanized adhesive rubber sheet

130: unmanned maintenance fitting

140: PVC film sheet

200: pipeline

According to a feature of the present invention for achieving the above object, the repair and repair method of a damaged sewage pipe is prepared by the step of preparing a room temperature vulcanized unvulcanized adhesive rubber sheet which is converted to vulcanized rubber at room temperature; Preparing a synthetic fiber felt impregnated with a semi-liquid two-component room temperature curable resin by mixing a two-component resin cured at room temperature with a curing agent; Attaching a tacky unvulcanized rubber sheet to a two-component room temperature curable synthetic resin on top of the synthetic fiber felt; Attaching roundly to the surface of the unmanned repair fitting machine by coating the surface of the PVC film sheet, which is a polymer synthetic resin, with silicone coated as a release agent; It is attached to the surface of the patcher, which is an unmanned repair fitting, by attaching a sticky unvulcanized rubber sheet on the surface of a PVC film sheet roundly attached to the surface of an unmanned repair fitting. Attaching roundly to an upper surface of one PVC film sheet; Unmanned repair fittings enter the sewer pipes, mounted on the damaged areas of the sewer pipes, and compressed air is injected into the sewer pipes and the unvulcanized rubber adheres tightly and is strongly bonded. At the same time, the two-component room temperature hardening resin hardens and the damaged pipe parts are hardened. Attached to and rigidly coupled.

In the repair and repair method of such a broken sewer pipe, applying a primer in which 100 weight of unvulcanized rubber is dissolved in 200 weight of toluene on the upper surface of the sticky unvulcanized rubber attached to the inner surface of the damaged sewage pipe. It may include.

In the repair and repair of such broken sewage pipes, the synthetic fibers may be woven fabrics such as glass fibers or polyester felt woven fabrics or synthetic fibers in the form of dense meshes. .

According to the repairing method of the damaged sewage pipe according to the embodiment of the present invention, the sewage pipe buried underground is damaged and cracks occur, such as a hole breakage, or a gap in the connection seam of the sewer pipe, a joint breakage, a pipe It is possible to easily prevent leakage or submersion by cracks and the like, and to reinforce the damaged pipeline while giving an index to obtain a construction effect of double repairing the damaged sewer pipeline.

In addition, the adhesive unvulcanized rubber sheet used for the repair and repair of the damaged sewage pipe has a strong self-adhesion property by adding a tackifier, which is a synthetic resin, to the rubber, thereby synergizing the inherent adhesiveness of the rubber and the tackifier of the synthetic resin, which is a tackifier. It is manufactured to show its self-resistance, so it is firmly adhered to steel plates, concrete, synthetic resins, etc., it is not eroded by groundwater or sewage, and has excellent chemical resistance, durability and physical properties, and firmly adheres to concrete with high moisture content. After completing the construction on the damaged sewer pipe, the function of preventing the leakage and inundation is continuously maintained even if the crack is generated and damaged due to a variety of causes in the part where the construction is completed as time passes.

For example, embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited by the embodiments described below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Accordingly, the shape of the elements in the drawings and the like are exaggerated to emphasize a clearer description.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to FIGS. 1 to 7. In the drawings, the same reference numerals are given to components that perform the same function.

The present inventors studied the repair method of the broken sewage pipe, the rubber inner surface of the sewage pipe damaged by excellent rubber properties, such as rubber elasticity and elongation rate, tensile strength, tear strength, etc. Strongly attached to the surface to prevent the infiltration of groundwater or to prevent the leakage of contaminated sewage, and to apply the two-component room temperature hardened synthetic resin thereon to apply hardness and impact If a strong reinforcement form is formed, it was conceived that the index and reinforcement can be simultaneously performed unlike the conventional method of repairing sewage pipes.

Therefore, the repair method of the broken sewage pipe according to the present invention used a vulcanized rubber sheet in the unvulcanized state and room temperature vulcanized unvulcanized tackifying rubber packing which is converted to vulcanized rubber at room temperature. The unvulcanized rubber state means rubber in a raw state, and the vulcanized rubber state means rubber in a ripe state. The unvulcanized adhesive rubber sheet and the vulcanized type unvulcanized adhesive rubber sheet which is converted to vulcanized rubber at room temperature are endowed with adhesiveness, and are flexible and clayy. The unvulcanized adhesive rubber sheet and the room temperature vulcanized type unvulcanized adhesive rubber sheet which are converted to vulcanized rubber at room temperature have the property of enhancing adhesion by the action of rubber and resin.

According to an embodiment of the present invention, at room temperature, the vulcanized rubber sheet is converted to vulcanized rubber at room temperature, and is composed of the following components.

1) Rubber material: one of natural rubber or synthetic rubber ------------- 100%

2) Vulcanization aid: Magnesium Oxide ----------------- 5%

Stearic Acid ---------------------- 2%

Zinc Oxide -------------------------- 5%

Sulphur ------------------------------- 2%

3) Tackifier: Polybutene ------------------------ 10%

Petroleum Resin -------------------- 5%

Cumarone Resin ------------------- 7%

Rosin ------------------------------- 5%

4) Softener: Process Oil ------------------ 12%

DOA (Dioctyl Adipate) ---------------------- 10%

5) Filler: Calcium Carbonate ------------------ 20%

Clay --------------------------------- 20%

6) Reinforcement: Carbon Black ------------------------- 7%

White Carbon --------------------------- 6%

7) Vulcanizer: DM -------------------------------------- 2%

M -------------------------------------- 1%

T / T -------------------------------------- 1%

TRA -------------------------------------- 2%

On the other hand, the unvulcanized adhesive rubber sheet according to an embodiment of the present invention is a component excluding vulcanization aids and vulcanizing agents of the components constituting the room temperature vulcanized unvulcanized adhesive rubber sheet is converted to vulcanized rubber at room temperature It is composed.

Among the components constituting the rubber sheet, synthetic rubber includes SBR rubber, IR rubber, BR rubber, EPT rubber, IIR rubber, CR rubber, NBR rubber, Urethan rubber, and CPE rubber. The rubber base has inherent physical properties and characteristics by type. Depending on the purpose of use or the demands of the consumer, this rubber material may be used either alone or in combination with natural rubber and synthetic rubber, or by mixing two or more synthetic rubbers of different types. Also good. The present inventors tested the results. Among the synthetic rubbers, the unvulcanized adhesive rubber sheet made of IIR rubber (rubber rubber) as the rubber base was excellent in adhesive strength, durability, heat resistance, and chemical resistance. It exhibited physical properties.

In addition, when the unvulcanized adhesive rubber sheet of the above embodiment is to prepare an unvulcanized adhesive rubber sheet having a color such as blue or yellow, the black carbon is excluded, the amount of black carbon is added to the back carbon, and the desired pigment is added. It becomes the unvulcanized rubber of the color you want.

According to the ingredients and the proportion of the components, the method for producing the adhesive unvulcanized rubber sheet is firstly a natural rubber or synthetic rubber (SBR rubber, a Kneader Mixer or Banbury Mixer) IR rubber, EPT rubber, IIR rubber, CR rubber, NBR rubber, Urethan rubber, CPE rubber) is added and stirred. During this stirring, magnesium oxide (5%), stearic acid (2%), zincation (5%) and sulfur (2%), which are vulcanization aids, are mixed with the rubber base. In addition, polybutene (10%), petroleum resin (5%), guarone resin (7%), and ro-gin (5%) were added and stirred, followed by calcium carbonate (20%) as a filler. While adding cray (20%), while adding carbon black (7%) and back carbon (6%) as a reinforcing agent, while stirring and adding process oil (12%) and DOA (10%) as a softener. After cooling the unvulcanized sticky rubber dough prepared in this step, the rubber dough is stirred again in a rubber open roller, DM (2%), M (1%), When T / T (1%) and TRA (2%) are added and stirred to prepare a sticky unvulcanized rubber dough which is converted to vulcanized rubber at room temperature. This rubber dough is extruded in a constant width and thickness in an extruder. And, while attaching a release paper coated with a silicone coating on one side of the extruded rubber sheet, cut to a certain length and rolled round, the room temperature vulcanized unvulcanized adhesive rubber sheet is converted to vulcanized rubber for use in the construction method of the pipeline repair Is prepared. On the other hand, in the unvulcanized adhesive rubber sheet, as described above, the vulcanizing aid and the vulcanizing agent are excluded in the process. For reference, the above-mentioned unvulcanized viscous rubber is filed in advance by the present inventor, and is registered as invention patent No. 204332.

On the other hand, the method of reinforcing the outer surface of the unvulcanized rubber sheet attached to the inner surface of the damaged pipe line 200 is a lining reinforcement method commonly used as a maintenance reinforcement method of the conventional damaged pipe line 200 as urethane resin, epoxy A two-component liquid at room temperature curing type, such as a resin, or a two-component resin at room temperature curing type is added to the resin, and the mixed and stirred liquid two-component room temperature curing resin 112 is a synthetic fiber glass fiber felt 114 or poly Attached to the unvulcanized rubber sheet 116, which is impregnated with the ester felt, is adhered to the inner surface of the damaged pipe line 200 and cured after a certain time at room temperature, and exhibits very strong hardness and impact strength. Will be reinforced and exponential.

On the other hand, the unvulcanized pressure-sensitive rubber sheet 116 is a room temperature vulcanized type unvulcanized pressure-sensitive rubber sheet that is converted to vulcanized rubber at room temperature, the rubber sheet is gradually activated at room temperature for about one month, is converted to vulcanized rubber While the adhesive force is further strengthened and firmly bonded to the inner surface of the sewer pipe, it is also firmly integrally and completely bonded with the synthetic fiber felt 114 impregnated with a room temperature-curable resin. (See FIG. 7). Using the sulfur rubber sheet 116 as an intermediate medium, the inner surface 202 of the sewage pipe 200 damaged and the synthetic resin felt 114 on the surface are integrated in a sandwich form and exhibit a perfect effect. Due to the characteristic high tensile strength and elongation rate, even if the position of the pipe connection part is changed slightly due to the crustal fluctuation or the like, a step occurs or a crack such as a crack occurs. And also it continues to give to avoid flooding and leaks in hasugwanro.

Referring to Figures 1 to 7, while explaining in detail the repair method of the broken sewer pipe according to an embodiment of the present invention, the broken position and the CCTV camera to enter the broken sewer pipe to be repaired and After checking the shape and the like and checking the obstacles such as soil and sand (S12), it is cleaned while removing various foreign matters such as soil and sludge in the area to be repaired in the pipeline 200 with a high pressure jet cleaner (S14). Then, the repair material 110 is prepared. (S16) The adhesive unvulcanized rubber sheet 116 is made wider than the damaged size and shape of the damaged sewage pipe 200, and the length of the inside of the sewage pipe 200 is increased. Prepared by cutting slightly longer than the length of the periphery of the side 202 (S16a), the width of the glass fiber felt 114 or polyester fiber felt is both sides than the width of the adhesive unvulcanized rubber sheet 116 prepared by cutting The length is 10-15 cm, and the length of the mill is prepared by cutting 5 cm longer than the length of the prepared unvulcanized rubber sheet 116. Referring to FIGS. 1 and 2, the primer is then applied to the upper portion of the unvulcanized adhesive rubber sheet 116, and then mixed with a curing agent to disperse the two-component room temperature curing resin to stir evenly to disperse the solution 112. ), After spreading to spread the glass fiber felt 114 or polyester felt to spread evenly and impregnated the liquid resin in the fiber (S16b), after putting the prepared adhesive unvulcanized rubber sheet 116 on top (S16c), the outer peripheral surface 132 of the unmanned maintenance fitting 130 is wound on the PVC film sheet 140, the surface of the silicone coating treated as a surface (S16d), the room temperature curable resin that is the prepared repair material 110 The impregnated glass fiber felt 114 to the bottom and the unvulcanized rubber sheet 116 coated with a primer on the top to the upper end of the overlapping round and mounted (S16e) to the damaged point inside the sewer pipe Tow (S18) (refer to FIG. 5) Then, compressed air is injected into the packer, which is the unmanned repair fitting 130, to apply pressure to the outer surface 132 of the unmanned repair fitting 130 to expand and expand. While the water-retaining material 110 mounted on the surface is attached to the inner surface 202 of the conduit 200 and subjected to 1 to 2 hours while being pressed for 2 to 4 kg / cm 2, the unvulcanized adhesive rubber sheet 116 ) Is firmly adhered to the inside of the conduit 200, which is damaged by pressing (S20), and the glass fiber felt 114 impregnated with the two-component room temperature curable resin is cured to exhibit a very strong hardness, thereby providing an interior of the conduit 200. After the reinforcement, the unmanned repair fitting 130 is placed for 1 to 2 hours and the hardener 110 is sufficiently cured in the damaged pipe 200 to discharge the compressed air to recover the original shape and then remove the pipe out of the pipe.

The repair material according to a preferred embodiment of the present invention can be modified according to the size of the sewage pipe and the shape of the damaged part.

According to the repair method of the damaged sewage pipe according to the embodiment of the present invention, the sewage pipe embedded in the basement is damaged and cracks are generated, such as a hole breakage, or a gap between the joints of the sewer pipe, the joint breakage In addition, it is possible to easily prevent leakage or submergence by pipe cracks and to reinforce the damaged pipe while giving an index, thereby obtaining a construction effect of repairing the damaged sewage pipe in two times.

In addition, the adhesive unvulcanized rubber sheet used for repairing damaged sewage pipes has a strong effect due to the synergistic effect of the rubber's inherent adhesiveness and that of the synthetic resin, which is a tackifier, by adding a tackifier, which is a synthetic resin, to the rubber. Manufactured to exhibit self-adhesiveness, it is firmly adhered to steel plates, concrete, synthetic resins, etc. It is not eroded by groundwater or sewage, and has excellent chemical resistance, durability and physical properties, and firmly adheres to concrete with high moisture content. Therefore, after the completion of the construction in the damaged sewer pipe has a effect that prevents leakage and inundation continuously even if the crack is generated due to a variety of causes, such as a new cause in the part that completed the construction over time.

Claims (6)

In the repair of broken sewer pipes: Investigating the situation inside the pipe by putting a CCTV camera into the sewer line to be repaired; Removing foreign matter inside the sewer pipe with a high pressure jet cleaner; Preparing a repair material and mounting it to the unmanned repair fitting; Entering the unmanned repair fitting fitted with the repair material into a damaged part of the sewer pipe; Injecting compressed air into the unmanned repair fittings located in the damaged portion of the sewer pipe, the step of contacting / pressing the repair material on the inner surface of the sewer pipe for a predetermined time; The repair material preparation step Preparing an adhesive unvulcanized rubber sheet; Preparing a synthetic fiber felt impregnated with a liquid two-component room temperature curable resin in which a two-component epoxy resin and a curing agent are mixed at room temperature; Including the step of attaching the adhesive unvulcanized rubber sheet on the synthetic fiber felt impregnated with the two-component curable resin, it is possible to double the index to block the leakage of the damaged portion and the reinforcement to reinforce the damaged portion at the same time Method for repairing broken sewer pipe, characterized in that. The method of claim 1, The preparing of the adhesive unvulcanized rubber sheet is carried out by adding a vulcanization aid, a vulcanizing agent, a tackifier, a softening agent, a filler, a reinforcing agent to a rubber main material consisting of at least one of natural rubber and synthetic rubber, and vulcanizing at room temperature by extruding in an extruder. A method for repairing a broken sewer pipe, comprising preparing a room temperature vulcanized sticky unvulcanized rubber sheet which is converted to rubber. The method of claim 1, The step of preparing the pressure-sensitive unvulcanized rubber sheet is a broken sewer pipe, characterized in that the prepared by adding a tackifier, softener, filler, reinforcing agent in a rubber main material made of at least one of natural rubber and synthetic rubber and then extruded in an extruder Method of repair. The method of claim 1, The two-component room temperature curable resin that is cured at room temperature is a mixture of a curing agent in an epoxy resin or a urethane resin, and the synthetic fiber felt impregnated with the two-component room temperature curable resin is cured after 1-2 hours at room temperature, thereby causing damage. Repair method of the sewer pipe characterized in that the reinforcement. The method of claim 1, Before attaching the prepared repair material to the surface of the unmanned repair fitting, further comprising the step of attaching the silicone film coated with a release agent on the upper surface round the surface of the unmanned repair fitting, the broken How to repair sewer pipes. The method of claim 1, Applying an adhesive in which 100 weights of unvulcanized rubber is dissolved in 200 weights of toluene on an upper portion of the sticky unvulcanized rubber sheet of the repairing material before contacting / compressing the repairing material on the inner surface of the broken part of the sewer pipe for a predetermined time. The repair method of the broken sewer pipe, characterized in that it further comprises.