JP4847881B2 - Existing pipe repair method and existing pipe repair system used for the method - Google Patents

Description

  The present invention relates to an existing pipe repair method and an existing pipe repair system used for the method, in particular, an existing pipe that is repaired by inserting a pre-manufactured lining pipe into an existing pipe buried underground such as a sewer. The present invention relates to a repair method and an existing pipe repair system used in the method.

  The sewerage penetration rate in Japan is 67% on average, and in urban areas, it is close to 100%. Under such circumstances, the construction of new sewerage pipes has almost disappeared except in some regions, and the maintenance of old pipes has become important. The total length of sewage pipes is approximately 360,000 km, of which pipes that have exceeded the service life of 50 years are over 7000 km. In the future, it is expected to increase by several thousand kilometers per year.

  In general, for pipes buried in the ground such as sewer pipes, it is inevitable that various deformations due to the passage of years since installation, for example, generation of steps due to deviation or change in diameter, etc., occur. In addition, the existing pipes need to be repaired at a predetermined time due to the fact that even if no deformation occurs, replacement is necessary with aging.

  Currently, the sewage pipe regeneration repair technique is to excavate the ground by work from the ground, excavate the old pipe from the ground and insert a new pipe, repair the inner surface of the pipe from inside the pipe without digging The work method and the method of putting a new pipe in non-open cut are adopted. As a repair method for inserting a new pipe by non-open cutting, there is a method of inserting a ready-made lining pipe manufactured for repair in factory production into an existing pipe. Filling the gaps between them to stabilize the installation is also performed.

  For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 7-91567), a pre-manufactured new pipe (pre-made lining pipe) is inserted into the existing pipe to be repaired, and then the gap between the existing pipe and the new pipe is filled. Techniques for injecting agents are disclosed. That is, in the specification of Patent Document 1 and paragraph “0022”, “an injection agent such as mortar is injected between the old sewer pipe and the new pipe from the start shaft 41 or the arrival shaft 42, and It is solidified and the rehabilitation work is finished. "

  Also, in Patent Document 2 (Japanese Patent Laid-Open No. 9-207216), a technique for injecting a backfill material between a plastic sheath pipe (the existing lining pipe of the present application) inserted into an existing pipe to be repaired and an existing sewer pipe Is disclosed.

JP-A-7-91567 JP-A-9-207216

  As described above, in the techniques of Patent Document 1 and Patent Document 2, the filler is injected into the gap between the new pipe and the existing pipe after the new pipe is inserted into the existing pipe and then provided on the pipe port or the inner surface of the pipe. A method of injecting the filler from the injection port will be adopted. However, once the new pipe is inserted, the gap between the existing pipe and the new pipe is narrow, so that it is difficult to fill the space evenly with the actual construction. As a result, there is a situation in which a region where no filler is present partially occurs in the gap between the existing pipe and the new pipe. In this situation, since the filler tends to flow downward, it is likely to occur particularly in the gap above the new pipe, and there is a possibility that a cavity may be generated in the upper part of the new pipe. If a space not filled with the filler remains in this way, the new pipe and the existing pipe cannot be made into a complete unit, and there is a possibility that the strength as designed may not be ensured. In order to prevent the occurrence of buckling, it is desired to ensure a more complete filling state of the filler.

  The present invention has been made in view of the above problems, and its purpose is to uniformly inject a filler into a gap existing between the existing pipe and the existing lining pipe after the ready-made lining pipe is inserted into the existing pipe. It is an object of the present invention to provide an existing pipe repair method that can be performed and an existing pipe repair system used in the construction method.

In order to solve the above problem, the existing pipe repair method according to claim 1 is:
An existing lining pipe that has been manufactured in advance is inserted into the existing pipe, and the existing pipe is repaired by filling a time-hardening filler between the outer side surface of the pre-made lining pipe and the inner side surface of the existing pipe. In the pipe repairing method, a filling material in which the front end portion in the insertion direction of the ready-made lining pipe is closed and the space in the insertion direction of the ready-made lining pipe in the existing pipe is filled with the filling material over a predetermined length. The filling region, and the insertion operation of the ready-made lining pipe into the existing pipe is performed while the closed front end portion is plunged into the filling material-filled area, and the filling material filling area is formed of the ready-made lining pipe. Along with the progress of the insertion operation, it is formed so as to be sequentially extended in the insertion direction.

  According to this configuration, the front end of the ready-made lining pipe in the insertion direction is not a conventional clearance elimination method in which the filler is injected into the gap existing between the two after completion of the operation of inserting the ready-made lining pipe into the existing pipe. The part is closed, and is made to enter the filler-filled region formed forward from the tip, and is advanced along with the extension of the filler-filled region in the insertion direction. Therefore, the ready-made lining pipe moves forward in a state in which the ready-made lining pipe is always in close contact with the filling material around the ready-made lining pipe by the operation of entering the region filled with the filling material from the top. That is, since the filling material is inserted while being spread out, it moves forward while pouring the filling material around the ready-made lining pipe. Therefore, there is no room for air to enter the gap between the existing lining pipe and the existing pipe, and the gap between the inner side face of the existing pipe and the outer side face of the existing lining pipe is surely in a state where a filler is present. Thereby, it is possible to reliably create a state where the filler is uniformly injected between the existing pipe and the existing lining pipe.

The existing pipe repair method according to claim 2 is:
The filler filling region is formed by a filler supply device configured to be movable in the insertion direction and installed at a predetermined position in the insertion direction of the prefabricated lining pipe in the existing pipe, and the filler supply device is Sealing means for closing the existing pipe at a predetermined position ahead of the ready-made lining pipe in the insertion direction, and a filler injection part for injecting a filler into a space formed on the front end side of the ready-made lining pipe of the sealing means And.

  That is, while the filler supply device moves in the insertion direction, the filler filling region is injected in the insertion direction by injecting the filler into the space formed on the front end side of the ready-made lining pipe of the sealing means. It will be formed as an extension. Thus, the ready-made lining tube can be advanced along with the filler-filled region that is being extended.

The existing pipe repair method according to claim 3 is:
The filler supply device is configured to synchronize with the insertion operation of the ready-made lining pipe so that the extension of the filling material-filled area can allow the insertion action of the ready-made lining pipe to enter the filling material-filled area. It is characterized by moving forward in the insertion direction.

  In the method of the present invention, the progress of the ready-made lining pipe in the insertion direction in the existing pipe must always be performed while ensuring the situation of entering the filler-filled area from its leading portion. In this case, a filler-filled area must always be formed in front of the ready-made lining pipe. In addition, when the operation of inserting the ready-made lining pipe and the operation of the filler supply device are not exactly synchronized, the filler injection pressure varies, which is not preferable. Therefore, by synchronizing the insertion operation of the ready-made lining pipe and the movement operation of the filler supply device forward in the insertion direction, a stable forward movement of the ready-made lining pipe is allowed and always filled with a stable injection pressure. A state is ensured in which the material surrounds the periphery of the ready-made lining pipe.

The existing pipe repair method according to claim 4 is:
Synchronous movement with the insertion operation of the ready-made lining pipe of the filler supply device,
The filling material supply device and the ready-made lining pipe are coupled by a connecting means, and both are moved simultaneously. With this configuration, the synchronization between the above-described insertion operation of the ready-made lining pipe and the movement operation of the filler supply device forward in the insertion direction is easily ensured. In other words, the insertion operation of the ready-made lining pipe and the filler supply device are coupled by the connecting means, so that the lining pipe is always moved at the same speed, so that the synchronized movement can be ensured easily.

The existing pipe repair method according to claim 5 is:
The front end portion of the ready-made lining pipe is closed by detachably attaching a cap-like closing member to the front end portion. By closing with the detachable cap-like plugging member, it is possible to perform the blockage releasing operation at the stage where the insertion operation of the ready-made lining pipe is completed by a simple operation of removing the plugging member.

The existing pipe repair method according to claim 6 is:
The plug member has a shape that gradually decreases in outer diameter toward the front in the insertion direction. Thereby, the advancing operation of the ready-made lining pipe | tube of making it advance in an insertion direction, entering into a filler filling area | region can be made easier. In other words, the resistance received from the filler during advancement of the ready-made lining pipe can be made smaller, and the operation of proceeding while expanding the filler can be made easier.

The existing pipe repair system according to claim 7 is:
The existing pipe repair system used for the existing pipe repair method according to any one of claims 1 to 6, wherein a plug member that closes a front end portion in an insertion direction of the ready-made lining pipe, and a ready-made lining inserted into the existing pipe. Closing means that is installed at a predetermined position in front of the pipe insertion direction and closes the existing pipe at the installation location, and filler injection that injects the filler into the space on the front end side of the prefabricated lining pipe from the closing part And a mechanism. According to this configuration, a partition is formed in the existing pipe by the closing means, and a space for storing the filler can be secured at the boundary, and a filling region of the filler is provided in the space by the filler injection mechanism. It becomes possible to form. Thereby, implementation of the said existing pipe repair construction method can be performed by simple structure.

The existing pipe repair system according to claim 8 is:
The closing means is formed by a main body portion installed in the existing pipe, and a packing member that hermetically closes a gap between the outer surface of the main body portion and the inner peripheral surface of the existing pipe facing the outer surface. It is characterized by that. With this configuration, it is possible to easily and reliably close the existing pipe at a predetermined position in front of the tip of the existing lining pipe of the existing pipe, thereby filling the space area on the side of the ready-made lining pipe of the closing means with the filler. A region can be easily formed.

The existing pipe repair system according to claim 9 is:
The filler injection mechanism has an inlet for injecting the filler into a space formed at the front end side of the ready-made lining pipe of the closing means, and causes the filler to flow into the space from the inlet. And a filler pressurizing means. Thereby, it becomes possible to simply inject the filler into the space formed on the front end side of the ready-made lining pipe of the closing means.

  According to the existing pipe repair method and the existing pipe repair system used in the existing pipe repair method according to the present invention, it is possible to reliably and uniformly fill the gap between the existing pipe and the existing lining pipe. Become. In other words, after the operation of inserting the ready-made lining pipe into the existing pipe is completed, the conventional idea of injecting the filler into the gap existing between the two is changed, and the ready-made lining pipe always enters the area filled with the filler. However, since it moves forward and the insertion operation into the existing pipe is performed, it is possible to eliminate the room for air intrusion. Thereby, the integrity of the existing pipe and the ready-made lining pipe after the hardening of the filler is increased, the buckling of the sewage pipe and water leakage can be prevented accurately, and the reliability of the existing pipe repair is improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Drawing 1 is an explanatory view showing an embodiment of an existing pipe repair method and existing pipe repair system of the present invention, and shows an example applied to a sewer system of general composition.

  As shown in the figure, a sewer main 10 is arranged between manholes 100 and 102 installed at a predetermined interval. The sewer main 10 is repaired by using the method and system of the present invention, and the existing pipe repair system according to the embodiment is installed in the sewer main 10. The state where the ready-made lining pipe | tube 12 which is a new pipe | tube is connected and inserted to the position of more than half is shown.

  FIG. 2 is an explanatory diagram for illustrating a configuration of a main part of the existing pipe repair system according to the embodiment, and FIG. 3 is a partially enlarged view for facilitating understanding of the main part. FIG. 2 shows a state in which two (12-1 and 12-2) ready-made lining pipes 12 are inserted into the sewer main pipe 10. As shown in the drawing, a plugging member 14 is attached to the distal end of the leading ready-made lining pipe 12-1 in the insertion direction. The closing member 14 is a cap-shaped member that can be fitted to the opening end of the ready-made lining pipe 12, and is formed of, for example, resin or metal, and is firmly fixed to the end of the ready-made lining pipe 12, and is detachable. It is configured to be possible. In the present embodiment, the distal end portion in the mounted state has a flat shape.

  In addition, a filling member supply device for forming a filler-filled region is installed in front of the leading ready-made lining pipe 12-1 in the insertion direction. In this embodiment, the filling member supply device is a filler injection device. The apparatus main body 18 has inlets 16-1 and 16-2 and has a substantially cylindrical shape, and a pump 20 that pressurizes and supplies a filler to the apparatus main body 18. The filler is supplied, for example, from a filler storage tank (not shown) installed on the ground via the supply pipe 22 from the manhole 102 side, for example, cement milk that hardens with time. A water curable material or a resin such as polyurethane is preferably used. A preferable range of the filling material injection pressure by the pump 20 is, for example, about 0.05 to 0.1 MPa.

  What is important is that the filler supply device is provided with a closing means for closing the sewer main pipe 10 which is an existing pipe. In the present embodiment, it is formed by two rows of packings 24-1 and 24-2 provided outside the apparatus main body 18, and the ready-made lining pipe 12 is closed at this portion. Thus, the sewer main is partitioned by the packing 24 portion. Further, a packing 26 that seals between the ready-made lining pipe 12 and the sewer main pipe 10 is installed at the end of the sewer main pipe 10 on the manhole 100 side. That is, a closed space is formed by the packings 24 and 26, and the filler-filled region X is formed by injecting the filler into this portion.

  Then, as will be described later, by continuously performing the advancement of the ready-made lining pipe 12 in the insertion direction and the extension of the filler-filled region X in the advancement direction, the gap between the sewer main pipe 10 can be surely obtained. The ready-made lining pipe 12 is inserted in a state where the filler is filled. Although not shown, an attachment pipe for allowing drainage from the ground to flow in is provided in the middle of the sewer main 10, and an opening exists in the upper part of the attachment part of the attachment pipe of the sewer main 19. However, when the above repair work is performed, a water-stopping packer is installed in the opening and the opening is closed, so that there is a problem in the operation of forming the ready-made lining pipe 12 and the filler-filled region X. Absent.

  Further, in order to smoothly advance the ready-made lining pipe 12 by performing the advance operation in the inserting direction of the ready-made lining pipe 12 and the extension formation of the filler-filled region X in the moving direction reliably. Then, the closing member 14 of the ready-made lining pipe 12 and the apparatus main body 18 are coupled by the connecting member 15. The connecting member 15 ensures that the ready-made lining pipe 12 and the filling member supply device move forward together. That is, the insertion operation of the ready-made lining pipe 12 proceeds in the filler having a suitable internal pressure obtained by the preferable injection pressure described above.

  4A and 4B show a configuration example of the apparatus main body 18. FIG. 2A shows a configuration example in which an appropriate filler is generated inside and filled with the filler. For example, the mixing chamber 17 for mixing two kinds of materials supplied from the pump 20 is shown. And a piston portion 19 for injecting the filler mixed in the mixing chamber 17 from the injection port 16. According to such a configuration, it is possible to generate a filler having an accurate property such as a curing time immediately before injection, and it is possible to supply the filler smoothly.

  FIG. 5B shows another example of the configuration. In this example, the closing plate 21 formed in a circular shape with a predetermined thickness with resin or the like and the packing 28 so as to close the existing pipe around it. It consists of and. In this case, the filler supplied from the pump 20 is supplied to the filler-filled region X through the injection path 30 formed so as to penetrate the closing board 21. The obstruction board 21 is formed in such a thickness that it is inclined during movement and the obstruction state of the existing pipe does not collapse. The number of packings 28 is not limited to one, and a plurality of packings 28 can be installed to stabilize the installation state and movement.

  Although not shown, the packing 24 can have a hollow structure, and the repulsive force of the packing can be made variable by adjusting the filling pressure of a gas such as air into the internal space. According to this configuration, during the movement in the preparation stage of the apparatus main body 18, the filling pressure is lowered to reduce the repulsive force, enabling smooth movement, and when the filling material starts to be injected, the air filling pressure is raised to increase the packing performance. It is also possible to perform control to improve the above. In that case, a means for supplying air into the packing 24 is installed in the apparatus main body 18 or in the vicinity of the rear thereof.

  FIG. 5 shows another example of the structure of the closing member that closes the tip opening of the leading ready-made lining pipe 12. As illustrated, in the present embodiment, a tapered plug member 32 having an outer diameter that decreases toward the tip is used. According to this configuration, the flow of the smooth filler material is ensured when entering the filler-filled region X and pushing the filler material to advance. In the present embodiment, the connecting member is composed of one connecting bar 33 extending from the tip of the tapered plug member 32, and the connecting bar 33 is connected to the main body device 18.

  Next, an operation procedure for repairing the sewer pipe 10 that is an existing pipe using the existing pipe repair system according to the above embodiment will be described. 6 (A) and 6 (B) show the state of the stage for preparing the initial state. In the example of FIG. 6 (A), the front end opening of the first ready-made lining pipe 12-1 is previously plugged. Although the member 14 is attached, a connecting member 15 is fixedly attached to the outer surface of the closing member 14 in advance, and is screwed and fixed to the leading ready-made lining pipe 12-1. In this state, the insertion of the sewer main pipe 10 into the packing 26 is started, and when the connecting member 15 collides with the main body 18 of the filler supply device, the ready state is set. Then, the apparatus main body 18 may be pushed and moved by pushing the ready-made lining pipe 12. In addition, a receiving portion that receives the tip of the connecting member 15 may be formed on the apparatus main body 18 side, and the connecting member 15 may be configured to be in a fixed state in response to an operation instruction from the outside. For example, an electromagnetic means such as a solenoid can be installed, and the coupling can be fixed by energization.

  FIG. 5B shows another example. Contrary to FIG. 6A, the connecting member 15 is fixed to the apparatus main body 18 in advance, and further, the end of the connecting means 15 is plugged. The means 14 is fixedly attached. Then, in this state, it is introduced into the sewer main pipe 10 from the manhole 100 side or the manhole 102 side, and thereafter, the leading ready-made lining pipe 12-1 is inserted into the packing 26 from the manhole 100 side to the plugging member 14. You may make it install. The ready-made lining pipe 12 can be pushed into the sewer main pipe 10 and rotated around the pipe axis by an apparatus to be described later, and the plugging member 14 can be attached by screwing.

  FIG. 7 shows that after the initial state is set as described above, the filler is injected from the inlet 16 of the apparatus main body 18 into the space between the packing 24 and the packing 26 provided in the pipe portion of the sewer main pipe 10. The state is shown. At this stage, the ready-made lining pipe 12 and the apparatus main body 18 are not moved. Accordingly, the packing 26 is provided with an air vent member 26a for a preparation stage, and performs an air discharging function until the space is almost filled with the filler, and is closed after being filled. After completion of the preparatory work, an extension work of the filler filling region X is simultaneously performed by pushing the ready-made lining pipe 12 described later, moving the filler supply device, and supplying the filler to the filler filling region X. Done in progress.

  Therefore, the ready-made lining pipe 12 always proceeds in the filler-filled region X filled with the filler, so that air can be prevented from entering, and the ready-made lining pipe 12 is disposed between the ready-made lining pipe 12 and the sewer main pipe 10. It is ensured that the filler exists uniformly in the gaps. The progress of the ready-made lining pipe 12 is performed over the entire area of the main sewer 10 to be repaired, and the amount of filler injected from the apparatus main body 18 during the progress is between the ready-made lining pipe 12 and the main sewer 10. The amount that can be replenished in the gap is filled, that is, the replenishment corresponding to the volume of the gap is sufficient.

  FIG. 8 shows a state in which the operation of inserting the ready-made lining pipe 12 into the sewer main pipe 10 has been performed to the final stage, that is, a state where the first ready-made lining pipe 12-1 has reached the manhole 102 side. As shown in the figure, on the manhole 102 side, one temporary joint pipe 40 is provided for extending the sewer main pipe 10 into the manhole. The leading ready-made lining pipe 102-1 is in a state of proceeding into the temporary joint pipe 40. That is, a state where the ready-made lining pipe 12 is completely inserted is secured in the sewer main 10 to be repaired on the left side of the drawing. Further, the gap between the ready-made lining pipe 12 and the sewer main pipe 10 is also filled with the filler, and the portion of the filler-filled region X extends into the manhole 102.

  In this state, the parts of the filler supply device such as the apparatus main body 18 and the pump 20 are recovered, and after the filler is cured, the temporary joint pipe 40 is an end of the sewer main 10 to be repaired on the manhole 102 side, FIG. Cutting is performed at the position of the upper cutting line L, and the repair is completed.

  FIG. 9 is a schematic cross-sectional view showing an example of the configuration of the ready-made lining pipe 12, and hatching is omitted for clarity of the structure. As shown in the figure, a plurality of short coupling pipes are used, and they have a structure that is extended by joining them. In the figure, two ready-made lining pipes 12-1 and 12-2 are joined. The state is shown. These couplings are performed by, for example, screwing portions 12a, and each prefabricated lining pipe 12 is formed with a male screw portion 12a on one end side and a female screw portion 12b on the other end side. A large number of ready-made lining pipes 12 having the same shape are prepared, and a necessary number is coupled according to the length of the existing pipes. In addition, the elastic part 13 for water stop is provided in the base part of the external thread part 12a, respectively, and the watertightness of the ready-made lining pipe | tube 12 in the state screwed together is made favorable.

  This ready-made lining pipe is a ready-made product that is formed of a PE pipe (polyethylene), a PB (polybutene) pipe, a vinyl chloride pipe, etc., and is manufactured in advance in a factory. Therefore, the quality after insertion and installation is highly reliable.

  10 to 14 show one example of propulsion means for inserting a ready-made lining pipe into an existing pipe to be repaired. Here, only the operation relating to the propulsion of the ready-made lining pipe will be described, and the illustration of the filler supply device which is a characteristic part of the present invention is omitted. As shown in the drawing, a screw insertion device 50 for a ready-made lining pipe 12 is installed in a manhole 100 on the starting side of the insertion work. The screw insertion device 50 has an outer frame portion 51 installed in the manhole 100. The main configuration is a rotary arm 52 configured to be lifted and lowered by a lifting means (not shown), and the rotary arm 52 is provided. , A rotation restricting means 56 having an enlarged diameter portion 54 whose diameter can be expanded and reduced, and a restraining means 58 provided on the opposite side thereof.

  The rotary arm 52 is configured to be movable up and down (upward arrow 200 in the figure) and rotatable in the direction of the arrow 300 in the figure, and further has a configuration capable of extending and contracting its length as will be described later. Yes. The enlarged diameter portion 54 is covered with an elastic member or the like (not shown) having a large friction coefficient, and is inserted into the ready-made lining pipe 12 in a reduced diameter state, and presses the ready-made lining pipe 12 from the inside by expanding the diameter. And can be fixedly held. Then, by rotating the rotary arm 52 in this state, one ready-made lining pipe 12 can be held and rotated about the axis.

  On the other hand, the rotation restricting means 56 is installed in the vicinity of the opening on the starting end side of the insertion operation of the sewer main 10 to be repaired, and includes a restraining means 58 configured to be able to adjust the distance between the opposing surfaces wide / narrow. Have. The restraining means 58 is, for example, formed in a substantially ring shape and can be adjusted in its inner diameter, or provided with a plurality of restraining arms, and can be brought close to or separated from each other. In FIG. 10, the ready-made lining pipe 12-1 is sandwiched. Note that an elastic member having a large friction coefficient is provided on the inner surface of the restraining means 58 (not shown). By moving the restraining means 58 in a direction to approach each other, the ready-made lining pipe 12 can be gripped from the outside and its rotation can be restricted.

  FIG. 10 shows a state in which the first (leading) ready-made lining pipe 12 is already installed, and this leading ready-made lining pipe 12-1 is installed by using the rotary arm 52. It can be done easily.

  FIG. 11 shows a state in which the second ready-made lining pipe 12-2 is held in a state of being pressed from the inside by the enlarged diameter portion 54 of the rotating arm 52 that is still in an inclined state. From this state, the rotary arm 52 performs a lowering operation. And the state which descend | fall to the predetermined position and performed predetermined | prescribed rotation operation | movement is shown by FIG. In addition, as shown in FIG. 12, it is also preferable to provide support means 60 for maintaining the horizontal state of the held ready-made lining pipe 12-2 so as to support the holding state by the enlarged diameter portion 54.

  In the present embodiment, the support means 60 is moved close to and away from each other by a lifting means (not shown), and supports the ready-made lining pipe 12 held by the enlarged diameter portion 54 from the outside, or releases the sandwiched state. Like. The support means 60 is not an essential component, and the holding position of the rotating arm 52 by the enlarged diameter portion 54 is set to a position where the balance can be maintained, so that the work can be performed even by holding only the enlarged diameter portion 54.

  Next, FIG. 13 shows a state in which the rotary arm 52 is extended while being held in the state where the above-described ready-made lining pipe 12-2 is held, and is screwed with the ready-made lining pipe 12-1. Yes. When performing this screwing operation, the ready-made lining pipe 12-1 is maintained in a state of being clamped from the outside by the restraining means 58 of the rotation restricting means 56.

  In FIG. 14, after the coupling by screwing is completed, the clamping state of the ready-made lining pipe 12-1 by the restraining means 58 is released, the rotating arm 52 is extended, and the ready-made lining pipe 12-2 is connected to the sewer main pipe 10. The state pushed in is shown. By repeatedly performing the operations from FIGS. 10 to 14, the ready-made lining pipe 12 can be inserted over the entire length of the sewer main pipe 10. Although not shown, in the process of this insertion operation, in front of the leading ready-made lining pipe 12-1, the filler-filled region X is sequentially extended in the inserting direction, and the leading ready-made lining pipe 12-1 is always It pushes through the filling material filled there.

  In the above-described embodiment of the present invention, the movement of the filling material supply device including the ready-made lining pipe 12 and the apparatus main body 18 in the sewer main pipe 10 is basically the ready-made movement described in FIGS. This is performed by the propulsion operation of the lining pipe 12. That is, the propulsion is transmitted to the main body 18 and the pump 20 through the connecting member 15 by the propulsion movement of the ready-made lining pipe 12, and can move within the sewer main pipe 10. The supply pipe 22 connected to the pump 20 is pulled toward the manhole 102 in synchronization with this propulsion operation. The supply pipe 22 connected to the pump 20 is preferably constructed to have a high strength. If necessary, the supply pipe 22 is used as a string for pulling, and the pump 20, the apparatus main body 18, and a ready-made one. It is also possible to apply a traction force to the lining pipe 12.

  As described above, according to the present embodiment, the filler-filled region X maintaining a suitable pressure is extended and formed in front of the leading ready-made lining pipe 12-1 in the insertion direction by a simple configuration and operation. The ready-made lining pipe 12 is sequentially pushed into the sewer main pipe 10 in synchronization with this, and always advances in a state surrounded by the filler, and when the insertion operation is completed, the sewer main pipe 12 is pushed. The gap between the lining pipe 10 and the ready-made lining pipe 12 has no air remaining, and the solidification of the ready-made lining pipe 12 and the sewer main pipe 10 is achieved by hardening of the filler, and the quality of repairing the existing pipe is achieved. And improved reliability.

  In addition, this invention is not limited to the structure of the said embodiment, A various deformation | transformation is possible within the range of the summary of invention. For example, various configurations can be adopted for the configuration of the filler supply device, and it is sufficient that the means for closing the existing pipe can partition the existing pipe, and the configuration is not limited to the configuration of the hollow substantially cylindrical body 19 or the closing board 21. However, various modifications are possible as long as the existing pipe can be closed while moving.

It is a whole explanatory view showing the state where the existing pipe repair method and the existing pipe repair system according to the embodiment are actually applied. It is composition explanatory drawing of the existing pipe repair system which concerns on embodiment. It is the elements on larger scale of embodiment shown in FIG. (A) And (B) is explanatory drawing which shows the structural example of the apparatus main body of a filler supply apparatus. It is explanatory drawing which shows the other structural example of a closure member. (A) And (B) is explanatory drawing which shows the form from which the initial operation | movement (preparation stage operation | movement) of the existing pipe repair method which concerns on embodiment differs. It is explanatory drawing which shows the initial stage operation (preparation stage operation | movement) of the existing pipe repair method which concerns on embodiment. It is explanatory drawing which shows the last step of the existing pipe repair method which concerns on embodiment. It is structure explanatory drawing of the ready-made lining pipe | tube used for this invention. It is explanatory drawing which shows the ready-made lining pipe insertion operation | movement in embodiment which repairs a sewer main. It is explanatory drawing of the ready-made lining pipe insertion operation in embodiment which repairs a sewer main. It is explanatory drawing of the ready-made lining pipe insertion operation in embodiment which repairs a sewer main. It is explanatory drawing of the ready-made lining pipe insertion operation in embodiment which repairs a sewer main. It is explanatory drawing of the ready-made lining pipe insertion operation in embodiment which repairs a sewer main.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Sewer main pipe 12 Ready-made lining pipe 14 Closure member 15 Connection member 16 Inlet 18 Apparatus main body 20 Pump 21 Closure board 22 Supply pipe 24, 26 Packing 40 Temporary joint pipe X Filling material filling area

Claims (9)

An existing pipe in which a prefabricated ready-made lining pipe is inserted into an existing pipe, and a time-hardening filler is filled between the outer side surface of the pre-made lining pipe and the inner side face of the existing pipe to repair the existing pipe. In the repair method,
Closing the front end of the ready-made lining pipe in the insertion direction;
The space in the insertion direction of the ready-made lining pipe in the existing pipe is a filler-filled region filled with the filler over a predetermined length,
The insertion operation of the ready-made lining pipe into the existing pipe is performed while the closed front end portion is plunged into the filler-filled region,
The existing pipe repairing method is characterized in that the filling material filling region is sequentially extended in the insertion direction with the progress of the insertion operation of the ready-made lining pipe. The filler-filled area is
It is configured to be movable in the insertion direction, and is formed by a filler supply device installed at a predetermined position in the insertion direction of the ready-made lining pipe in the existing pipe,
The filler supply device includes:
Sealing means for closing the existing pipe at a predetermined position in the insertion direction of the ready-made lining pipe;
The existing pipe repairing method according to claim 1, further comprising: a filler injection portion that injects a filler into a space formed on the front end portion side of the ready-made lining pipe of the sealing means. Extension formation of the filler-filled region is
The filler supply device is moved forward in the insertion direction in synchronism with the insertion operation of the ready-made lining pipe so as to allow the insertion operation due to the entry of the ready-made lining pipe into the filler-filled region. The existing pipe repair method according to claim 2. Synchronous movement with the insertion operation of the ready-made lining pipe of the filler supply device,
The existing pipe repairing method according to claim 3, wherein the filling pipe supply device and the ready-made lining pipe are coupled by a connecting means and are moved simultaneously. Blocking the front end of the ready-made lining pipe is:
The existing pipe repair method according to any one of claims 1 to 4, wherein a cap-like closing member is detachably attached to the front end portion. The closing member is
The existing pipe repairing method according to claim 5, wherein the existing pipe repairing method has a shape with a gradually decreasing outer diameter toward the front in the insertion direction. In the existing pipe repair system used for the existing pipe repair method according to any one of claims 1 to 6,
A closing member that closes the front end in the insertion direction of the ready-made lining pipe;
Closure means that is installed at a predetermined position in the insertion direction of the prefabricated lining pipe that is inserted into the existing pipe and closes the existing pipe at the installation location;
A filler injection mechanism for injecting the filler into the space on the front end side of the ready-made lining pipe from the closed portion;
The existing pipe repair system characterized by including. The closing means is
It is formed by a main body portion installed in the existing pipe, and a packing member that hermetically closes a gap between the outer surface of the main body portion and the inner peripheral surface of the existing pipe facing the outer surface. The existing pipe repair system according to claim 7. The filler injection mechanism is
An injection port for injecting the filler into the space formed on the front end side of the ready-made lining pipe of the closing means;
A filler pressurizing means for allowing the filler to flow into the space from the inlet;
The existing pipe repair system according to any one of claims 7 and 8, characterized by comprising:

Images