KR20050011028A - Method for the repair/reinforcement of water pipe - Google Patents

Abstract

PURPOSE: A method for repairing and reinforcing a water pipe is provided to repair and reinforce the water pipes conveniently at low cost by mounting the repairing agent to the broken area and injecting the hardening agent to the broken portion during the watertight test by injecting fluid. CONSTITUTION: A water pipe repairing and reinforcing method includes a water pipe investigation step(S1), a space gain process(S2), an obstacle removing process(S3) and a repairing and reinforcing process(S4). The reinforcing fluid is manufactured by mixing the injection agent and the hardening agent after winding the separation foil on the unmanned repairing machine, and the repairing agent is decompressed on the separation foil by spreading the reinforcing agent on the polyester felt(S40). The unmanned repairing machine is transferred to the broken portion of the water pipe(S41). The repairing agent is attached to the broken portion of the water pipe by injecting air, and the unmanned repairing machine is removed from the water pipe after discharging air from the unmanned repairing machine(S42). A watertight test machine is installed around the broken area of the water pipe, and the injection agent is removed after the watertight test by putting the injection agent(S43). The hardening agent is injected to the broken portion during the watertight test, and the broken portion is repaired(S44).

Description

Method for the repair / reinforcement of water pipe}

The present invention relates to a water pipe reinforcement construction method, in particular, all water pipes buried in the ground can be commonly rehabilitation work, so that the construction can be carried out at a small cost in a short period of time without excavating the ground during the reinforcement work It is about water pipe maintenance reinforcement method to say.

In general, as the industrial society develops, the problem of depletion of water resources is seriously raised, which has increased the establishment of a large sewage treatment plant for the protection of water resources. As a result, sewage treatment plants which are undergoing maintenance reinforcement projects are increasing rapidly.

The repair and reinforcement work of water pipes in Korea is largely divided into a total repair method and a partial repair method.

At this time, the overall repair method, but the repair agent mounting method and the repair agent curing method is used, which is inherent a problem that excessive costs are generated due to the difficulty of the work process.

In addition, the partial repair method is divided into an index method and a reinforcement method.

The exponential method is an exponential re-injection (Sealing) method and an exponent ring inserting (SNAP LOCK) method, the exponential re-engineering method is a kind of structure grouting method using an unmanned repairer (Packer) to perform the watertight inspection for each joint in parallel It is designed so that it can be made into three rooms to solve the shrinkage of communication means.

At this time, the injection of the chemical solution immediately at the defective location found during watertight inspection, and can be carried out in parallel with the watertight test has the advantage that can be inspected immediately after the completion of the water-tightness of the repair part.

However, the index re-injection method is not a repair method of the reinforcement concept, so it is not suitable for repairing repair parts that require reinforcement such as pipe breakage or joint step difference, and the curing time of the chemical takes about 40 seconds. It is applicable, but there is a problem in that it is not applicable to effluent.

The SNAP LOCK method checks the presence or absence of damaged parts and obstacles using CCTV, and removes various sludges and foreign substances by jet cleaning when the robot's house is difficult due to earth and sand, and then cuts the cutter robot. To remove obstacles.

When the obstacle is removed, the surface is polished smoothly by using a surface polishing machine, a stainless steel plate with an index rubber is attached to the unmanned repair machine, and the compressed air is compressed using the compressed air after the towing point at the point to be repaired. After the conclusion, it proceeds by withdrawing the unmanned maintenance machine.

However, the exponential ring insertion method is practically impossible to apply where there is a joint step difference, there is a problem that a lot of construction costs are required by the input of the surface polishing machine.

The reinforcement method is divided into a reinforcing agent filling method and a reinforcing sheet attaching method, wherein the reinforcing agent filling method is mainly used to repair cracks, breakages, and joint gaps of conduits. Block the inflow of sewage and sewage from the pipeline, check the presence of damaged parts and obstacles using CCTV, and if it is difficult to enter the robot due to earth and sand, remove various sludges and foreign substances by jet cleaning, and use obstacles to cut the robot. Grind removal and repair parts.

In addition, various sludges and foreign substances are removed by jet cleaning, and a hot air blower is completely dried, and a repair robot is injected to spray epoxy on the repaired part, and then the repaired part is completely dried.

However, the reinforcing agent filling method repairs only a part of the damaged part, not the shear surface, so that defects often occur if the above construction method is not followed, and a problem arises that the construction cost is increased due to a long working time. .

The reinforcing sheet attachment method is divided into PL method, CPL method, and FRP method. At this time, the PL method and CPL method use glass fiber for a long time, have a high risk of river stigma, have no index capability, and repair parts. In case of infiltration water, it is necessary to remove the repairing agent and to make it work. The problem is that the working environment is poor due to the use of glass fiber, and that the stainless steel is easily separated by dredging after work, causing frequent clogging phenomenon. .

In addition, the FRP method is a reinforcement concept, and it is impossible to construct an exponential purpose, and the heat curing method may cause separation of the repair agent and the conduit to be repaired when the heat is blocked, and the impregnation of the resin takes a lot of time, Due to the heat supply device installed in the unmanned maintenance device, it is difficult to secure the communication area, and therefore, there is a problem that it is difficult to construct a pipeline having a large flow rate.

The present invention has been made in order to solve the problems described above, it is possible to perform common reinforcement work to all water pipes buried in the ground, do not excavate the ground during the reinforcement work, and perform the construction at a small cost in a short period of time It is possible to reinforce the damaged part by attaching a repair agent to the damaged part, and then perform water-tight inspection by using the injection liquid during water-tight inspection. The main purpose is to provide the reinforcement method.

Specific means for achieving the object of the present invention;

In the water pipe repair and reinforcement method which consists of a water pipe investigation process, a space clearance process, an obstacle removal process, and a maintenance reinforcement process;

The reinforcing reinforcing process, after winding the separation foil in the unmanned refining machine, the reinforcing solution is prepared by completely mixing the injection agent and the curing agent, to prepare a reinforcing agent by applying the prepared reinforcing solution to the polyester felt, and the prepared repairing agent A repair agent mounting step of depressurizing the overlapping foil wound around the unmanned repair machine;

An unmanned repair machine transfer process of transferring the unmanned repair device equipped with the repair agent to a damaged portion in the water pipe;

The primary repair and reinforcement process of injecting and expanding air using an air compressor in the unmanned water dispenser to attach a repair agent to the damaged part of the water pipe, discharging the air injected into the unmanned water heater, and then removing the unmanned water cooler from the water pipe. and;

A watertight inspection step of installing a watertight inspection and repairing machine on the basis of the damaged part in the water pipe, and performing a watertight test by injecting an injection into the water pipe with an air compressor, and removing the injected water;

If the damaged part is found in the watertight inspection process, a secondary repair reinforcement process for repairing the damaged site by injecting a hardener into the air compressor in the watertight inspection repair machine;

1 is a flow chart of the water pipe repair reinforcement method according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

S1: Process of investigating water pipe S2: Process of securing space in water pipe

S3: obstacle removal process S4: maintenance reinforcement process

S40: Repairing agent installation process S41: Unmanned maintenance machine transfer process

S42: 1st repair reinforcement process S43: Watertight inspection process

S44: 2nd repair reinforcement process

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

1 is a flow chart of the water pipe repair reinforcement method according to an embodiment of the present invention.

Referring to the drawings, the water pipe maintenance reinforcing method according to the present invention is composed of a water pipe investigation step (S1), space securing process (S2), obstacle removal step (S3) and maintenance reinforcement step (S4) of the water pipe.

The water pipe investigation step (S1) is to use the robot mounted CCTV in the water pipe as well known to identify the damage in the water pipes, the situation in the pipe, such as obstacles, after the equipment is placed in the manhole, damaged or leaked It is most preferable to proceed with the next process by precisely photographing the suspected part and determining whether it is possible only by dredging operation in the presence of obstacles or whether cutting robot operation is necessary.

At this time, it is preferable to accurately grasp the repair position by pulling the camera connection string tightly in the water pipe in which the damage or leakage is suspected.

The space securing step (S2) in the water pipe is most preferably to allow the entry into the unmanned water replenishment by removing the deposit sludge and foreign matter.

At this time, the obstacle removal step (S3) is to perform the operation when it is determined that the cutting robot operation is necessary in the water pipe investigation process, it is a process to more easily enter the unmanned maintenance machine by removing the obstacle in the water pipe.

Here, the maintenance reinforcement process (S4) is the main technology of the present invention, the repair agent mounting process (S40) and the unmanned maintenance machine transfer process (S41) and the primary maintenance reinforcement process (S42) and watertight inspection process (S43) and secondary It consists of a maintenance reinforcement process (S44).

At this time, the repairing agent mounting process (S41) after winding the separation foil in the unmanned repairer, and completely mixed with the injection and the curing agent to produce a reinforcement, and applying the prepared reinforcement to the polyester felt to produce a repairing agent, The produced repair agent is decompressed by overlapping the separation foil wound on the unmanned repair machine. At this time, the separation foil wound on the unmanned repair machine is most preferably used to which a release material is applied so that the repair agent can be separated smoothly.

Here, the polyester felt is composed of a felt and a film, wherein the felt has a function of containing a non-woven fabric, a woven fabric, a nonwoven fabric, a nonwoven fabric and a nonwoven fabric in a combination of one or two or more layers so that the repair agent does not flow down, After hardening, the felt plays a structural role.

In addition, the film is an impermeable plastic film coated on one side of the felt, to prevent the phenomenon that the repair agent is released by the pressure during curing.

In addition, when the reinforcing agent is applied to the polyester felt, it is preferable to apply the reinforcement roll so as to impregnate the film paper so that there is no empty space inside the felt using an impregnation roll.

In addition, after the pressure reducing agent is superimposed on the separation foil, it is preferable not to separate even during the movement of the unmanned maintenance machine by tightening both ends using a rubber band.

The unmanned maintenance machine transfer process (S41) is to transfer the unmanned maintenance machine, the pressure-reducing agent is decompressed to the damaged part in the water pipe, which indicates the damaged part displayed in the water pipe using the camera strap in the water pipe investigation step (S1). It is desirable to locate exactly at.

The primary maintenance reinforcement process (S42) is to inflate and expand the air by using an air compressor in the unmanned repair machine to attach the repair agent pressure-reduced to the water pipe to the damaged portion, and discharge the air injected into the unmanned repair machine, unmanned repair machine To remove from the water pipe, in this case, when injecting air using the air compressor is most preferably injected at 1.8kg / ㎠.

The watertight inspection step (S43) is to install a watertight inspection repairer based on the damaged part in the water pipe, and to perform the watertight test by injecting the injection into the water pipe with an air compressor to remove the injected water In this case, when injecting the injector using the air compressor, the compressive strength is injected at 1.8 kg / cm 2, and if another damaged part is found during the watertight inspection, it is most preferable to inject the injected part into the damaged part.

The secondary repair reinforcing step (S44) is performed only when another damaged part is found in the watertight inspection step (S43), and is a step of reinforcing and repairing the damaged part by injecting a hardener into the air compressor in the watertight inspection and repairing unit.

At this time, it is most preferable to inject the curing agent into the air compressor at a compressive strength of 1.8 kg / cm 2 so that it can be injected into the damaged part, so that the damaged part can be repaired and reinforced by mixing with the injection agent previously injected into the damaged part. .

As mentioned above, all water pipes buried in the ground can be repaired and repaired in common, and it is possible to carry out construction at a small cost in a short period of time without digging the ground during repairing work. It is a very useful invention to provide a water pipe repair and reinforcement method that can be easily reinforced by adding a hardener when another damaged part is found by reinforcing the damaged part and inspecting the water by using the injection liquid during the watertight test.

Claims (2)

In the water pipe maintenance step (S1), the space in the water pipe space securing step (S2), the obstacle removal step (S3), and the water reinforcement step (S4); The reinforcing reinforcement process (S4) is to wind up the separation foil in the unmanned refining machine, to completely mix the injection and the curing agent to produce a reinforcement, and to apply the prepared reinforcement to the polyester felt to produce a repair agent, the production A repair agent mounting process for reducing the pressure by overlapping the repair agent with the separation foil wound on the unmanned repair machine (S40); An unmanned repair machine transfer process (S41) for transferring the unmanned repair device equipped with the repair agent to a damaged portion in the water pipe; The primary repair and reinforcement process of injecting and expanding air using an air compressor in the unmanned water dispenser to attach a repair agent to the damaged part of the water pipe, discharging the air injected into the unmanned water heater, and then removing the unmanned water cooler from the water pipe. (S42); A watertight inspection step (S43) for installing a watertight inspection and repairing machine based on the damaged part in the water pipe, performing a watertight test by injecting an injection into the water pipe using an air compressor, and removing the injected injection; If the damaged part is found in the watertight inspection process, the secondary water reinforcement process (S44) for repairing the damaged area by adding a hardener to the air compressor in the watertight inspection repairer; water system maintenance reinforcement method comprising a. The method of claim 1, Compressive strength injected using the air compressor is a water pipe maintenance reinforcement method, characterized in that the injection to 0.5 ~ 5.0㎏ / ㎠.