JP5947607B2 - Pipeline rehabilitation method - Google Patents

Description

  The present invention relates to a pipe line rehabilitation method for constructing a rehabilitation pipe in a pipe line.

  Conventionally, there is a rehabilitation method that repairs and reinforces pipelines by installing lining materials on the inner surface of pipelines that are buried underground, such as aging water and sewage pipes, agricultural water pipes, and gas pipes. Are known. In a general rehabilitation method, a lining material impregnated with a curable resin is inserted into a pipeline, and both ends of the lining material are closed and pressurized air is directly introduced, or installed inside the lining material. By introducing pressurized air into the airtight bag, the lining material is pressed against the inner surface of the pipe, and the curable resin is cured through a curing process such as heating and ultraviolet irradiation, and after curing, the both ends of the lining material are blocked. By removing the air-tight bag or the like necessary for construction and cutting the extra portion of the lining material, a strong reinforcing structure (rehabilitated pipe) is constructed inside the pipeline.

  By the way, in the above rehabilitation method, after the lining material is applied, if the curable resin contained in the lining material is not sufficiently cured, the quality of the rehabilitated pipe is degraded, such as being easily deteriorated in the uncured portion. To do. Therefore, it is important to grasp the cured state of the curable resin after construction.

  In this regard, Patent Document 1 discloses a method for inspecting the cured state of the lining material using ultrasonic waves. In the inspection method disclosed in Patent Document 1, an ultrasonic transmitter (ultrasonic transmission probe) and an ultrasonic receiver (ultrasonic reception probe) are arranged in a pipeline at a distance from each other. While transmitting ultrasonic waves from the sound wave transmitter toward the lining material, the ultrasonic wave propagated through the lining material is received by the ultrasonic receiver. Here, when the curable resin of the lining material is in an uncured state, since the ultrasonic wave is attenuated and difficult to propagate compared to the cured state, the received waveform received by the ultrasonic receiver (particularly, The amplitude of the peak when receiving the ultrasonic wave propagating through the inside of the lining material is different. Therefore, it can be determined from the waveform of the ultrasonic wave received by the ultrasonic receiver whether or not the curable resin of the lining material is sufficiently cured.

JP 2009-250755 A

  By the way, the inspection of the cured state of the lining material is performed after releasing the blockage of the lining material or after removing an airtight bag or the like for expanding the lining material, and then a robot having an ultrasonic transmitter and an ultrasonic receiver. In order to put in, the end portion protruding from the pipe line was cut, and then the robot was inserted into the lining material. Therefore, if there is an uncured part in the lining material, an air-tight bag or the like is again inserted into the inner surface of the lining material, and a curing medium such as heat or ultraviolet rays is applied to the inner surface to perform re-curing. Inefficient.

  An object of the present invention is to provide a pipeline rehabilitation method that can be easily re-cured and can improve work efficiency.

The pipe line rehabilitation method in the present invention includes an insertion step of inserting a cylindrical lining material containing a curable resin into the rehabilitation target pipe line, and pressurizing the lining material inserted into the rehabilitation target pipe line from the inside. In a pipe rehabilitation method comprising: a pressing process of pressing a material against the inner surface of a rehabilitation target pipe; and a curing process of curing the lining material while pressing the lining material against the inner surface of the rehabilitation target pipe. An inspection device placement step of putting a lining material inspection device in the lining material before performing, and an inspection step of inspecting the state of the lining material inserted into the rehabilitation target pipeline by the lining material inspection device , The lining material has a curable resin non-impregnated portion not containing a curable resin at an end thereof, and the lining material non-impregnated portion is positioned outside the rehabilitation target pipe line in the insertion step. Inserting, in the inspection device placement step, characterized in that you put the lining material test apparatus in the curable resin non-impregnated portion.

  According to the above configuration, before the lining material is pressed against the inner surface of the pipeline to be rehabilitated, the lining material inspection device can be inspected at any time by inserting the lining material inspection device into the lining material. it can. As a result, the inspection that has been performed after cutting the end protruding from the conduit of the hardened lining material can be performed before the end is cut, so that re-hardening can be easily performed and the work can be performed. Efficiency can be improved.

The inner tension material test apparatus placed in a curable resin non-impregnated portion of the lining material, by affecting curable resin such as the functionality of the lining material test apparatus in advance so as not to exist, the cured curable resin Does not affect the lining material inspection device, it is possible to avoid the lining material inspection device from moving due to the cured curable resin.

  Further, in the pipe line rehabilitation method according to the present invention, the curing step is a step of curing a curable resin from the inside of the lining material, and the lining material inspection device in the curable resin non-impregnated portion in the curing step. The curing medium may be discharged from a hole provided between the pipe and the rehabilitation target pipeline. According to the above configuration, the curing medium is discharged to the lining material inspection device by discharging the curing medium from the hole provided between the lining material inspection device and the rehabilitation target pipe line in the curable resin unimpregnated portion of the lining material. The adverse effect can be reduced.

  Moreover, in the pipe line rehabilitation method according to the present invention, in the inspection device arranging step, after the lining material inspection device is placed in the curable resin unimpregnated portion, the lining material inspection device in the curable resin unimpregnated portion; You may close with the closing metal fitting which can open and close the position between the said holes. According to the above configuration, by closing the position between the lining material inspection device and the hole in the curable resin non-impregnated portion of the lining material with the closing metal fitting, the lining material non-impregnated portion of the lining material is covered with the lining resin inspection device. Can be saved. Thereby, a lining material inspection apparatus can be protected from the hardening medium which hardens a lining material. In addition, the portion of the lining material that has been closed by the closing metal fitting is not hardened because it is not impregnated with the curable resin, and is opened by opening the closing metal fitting, so that it can easily pass through the lining material inspection device. .

  Moreover, in the pipe line rehabilitation method according to the present invention, the lining material inspection apparatus includes a cured state detection instrument for measuring a cured state of the lining material, and after performing the curing step in the inspection step. The cured state of the lining material may be inspected with the cured state detection instrument. According to said structure, the presence or absence of the uncured part in a lining material can be investigated by test | inspecting the hardening state of the lining material after performing a hardening process with a hardening state detection instrument.

  According to the pipe rehabilitation method of the present invention, before the lining material is pressed against the inner surface of the pipe to be rehabilitated, the lining material inspection apparatus is inserted into the lining material, so that the state of the lining material can be inspected at any time by the lining material inspection apparatus. can do. As a result, it is possible to perform the inspection that has been performed after cutting the end portion of the hardened lining material that has protruded from the pipe line before the end portion of the lining material is cut. Even if there is a portion, it can be re-cured immediately and work efficiency can be improved.

It is a longitudinal cross-sectional view of a pipe line. It is sectional drawing of a lining material. It is a longitudinal cross-sectional view of a pipe line. It is a longitudinal cross-sectional view of a pipe line. It is a front view of an inspection robot. It is a side view of an inspection robot. It is a longitudinal cross-sectional view of a pipe line. It is a longitudinal cross-sectional view of a pipe line.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
(Outline of the pipeline rehabilitation method)
First, the pipeline rehabilitation method using a lining material will be described. As shown in FIG. 1 which is a longitudinal sectional view of a pipe line, the lining material 1 is a cylindrical body containing a curable resin, and after pulling the lining material 1 from the manhole M into the pipe line P, the internal pressure is increased. Then, the curable resin is cured in a state where the lining material 1 is pressed against the inner surface of the pipe line P, whereby a new rehabilitation pipe is formed on the inner surface of the existing pipe line P that has deteriorated. Further, as the curable resin, a thermosetting or photocurable resin can be used. In the case of thermosetting, the resin is cured by heating, and in the case of photocurable, it is cured by irradiation with light such as ultraviolet rays.

  In addition, the lining material 1 is arrange | positioned on the inner surface of the pipe line P which is a rehabilitation object using the rehabilitation methods of the existing pipes, such as a reversal method and a forming method. Here, the reversal method is, for example, inserting a hose material containing a thermosetting resin into an existing pipe while being reversely pressurized, and heating the thermosetting resin while being in a pressurized state in the existing pipe. It is a method of attaching hose material to the inner surface or forming a new pipe. In addition, the forming method means that, for example, a hose material containing a thermosetting resin is drawn into an existing pipe, the hose material is expanded and heated with air and steam, and the hose material is attached to the inner surface of the existing pipe. This is a method of forming pipes.

  The lining material 1 can be used in various configurations as long as it contains a curable resin, but organic fiber, glass fiber, aramid fiber, carbon fiber, etc. are impregnated with a curable resin liquid, So-called FRP can be preferably used.

  A cross section of an example of the lining material is shown in FIG. This lining material 1 is made of a sheet material (sheet molding compound: SMC) in which reinforcing fibers such as glass fibers are dispersed in a thermosetting resin such as an unsaturated polyester resin having increased viscosity, and is rolled into a cylindrical shape. Cylindrical fabrics 3 and 4 woven with polyester fibers or the like are arranged on the outer and inner sides of the base material 2 respectively. A synthetic resin coating 5 is formed on the inner surface of the inner tubular fabric 4. The tubular woven fabric 4 is impregnated with a thermosetting resin. The tubular fabrics 3 and 4 include both a circumferentially seamless cylindrical fabric woven by an annular loom and a plain fabric obtained by rolling a plain weave sheet into a tubular shape.

  In addition, as the substrate 2, in addition to the above SMC, a nonwoven fabric, a glass roving cloth, a glass mat, or a glass laminated substrate impregnated with a curable resin liquid can also be used. Moreover, the cylindrical fabrics 3 and 4 may be provided only on either the inside or the outside, and further, the cylindrical fabrics may not be provided. Or the structure by which the glass roving cloth was laminated | stacked on the base material 2 which consists of SMC etc. may be sufficient. Further, the synthetic resin coating 5 may be omitted.

(Pipeline rehabilitation method)
Next, the pipeline rehabilitation method according to the first embodiment of the present invention will be described. In addition, although the case of the forming method will be described, an inversion method may be used. Moreover, although the case where the lining material 1 containing a thermosetting resin is heated and cured with steam will be described, it may be heated by other methods such as hot water, and the lining material containing a photocurable resin may be heated by ultraviolet rays or the like. It may be cured with light.

  First, the water in the pipe upstream from the pipe P to be rehabilitated is blocked by a water stop device (not shown). In some cases, water in the downstream pipe is also dammed up by a water stop device. Then, the inner surface of the pipeline P is washed with high-pressure water. Next, the lining material 1 wound around a reel or the like (not shown) is carried into the site. The lining material 1 at this time is in a state where the outer diameter is smaller than the pipe line P to be rehabilitated before expansion. Next, as shown in FIG. 3 (a), the lining material 1 is inserted into the pipe P from the manhole M1 on the left side in the drawing, and the wire 11a is connected to the terminal fitting 11 that closes one end side of the lining material 1. Is pulled from above the right manhole M2 by a winding device (not shown), and the lining material 1 is drawn into the pipe P. Note that a belt 21a connected to the right side of an inspection robot 21 described later is inserted into the lining material 1.

  Here, a drain discharge hole (hole) 12 is provided at the rear end of the lining material 1. And the part (shaded part) from the rear end 1b of the lining material 1 to the drain discharge hole 12 is a thermosetting resin non-impregnated part which does not contain the thermosetting resin. The number of drain discharge holes 12 may be two or more.

  And as shown in FIG.3 (b), the both ends of the lining material 1 are located out of the pipe line P. As shown in FIG. Specifically, the portion from the rear end 1b of the lining material 1 that does not contain the thermosetting resin to the drain discharge hole 12 is positioned in the manhole M1, and the terminal fitting 11 is positioned in the manhole M2.

  After that, as shown in FIG. 3 (c), an inspection robot (lining material inspection device) 21 or an inspection tool capable of inspecting the state of the lining material 1 is put into the lining material 1 from the rear end 1b of the lining material 1. And between the rear end 1 b and the drain discharge hole 12. The inspection robot 21 includes a cured state detection instrument for measuring the cured state of the lining material 1 using ultrasonic waves, and a belt 21b is connected to the left side thereof. Then, the rear end 1 b of the lining material 1 is closed with the metal fitting 13. Since one end side of the lining material 1 is closed by the terminal fitting 11, both end portions of the lining material 1 located outside the pipe line P are closed.

  Next, as shown in FIG. 4 (a), a hose (not shown) is connected to the lining material 1 via the metal fitting 13, and air is supplied from the air compressor (not shown) to the lining material 1 via the hose. To pressurize the lining material 1 from the inside. Thereby, the lining material 1 expands and is pressed against the inner surface of the pipe P.

  Next, the air supplied into the lining material 1 via the hose is switched to steam from a boiler (not shown), and the lining material 1 is contained in the lining material 1 with steam while pressing the lining material 1 against the inner surface of the pipe P. The cured thermosetting resin is cured by heating. At this time, the inspection robot 21 is put in the non-impregnated portion of the thermosetting resin of the lining material 1 so that there is no thermosetting resin that affects the function of the inspection robot 21, and the cured thermosetting. Thus, the inspection resin 21 does not affect the inspection robot 21, and the inspection robot 21 is prevented from moving due to the cured thermosetting resin. Further, since the steam is discharged to the outside from the drain discharge hole 12, it is suppressed that the steam contacts the inspection robot 21 and has an adverse effect. After heating for a predetermined time, the steam supplied into the lining material 1 is switched to air, and the lining material 1 is cooled with air.

  Next, as shown in FIG. 4B, the belt 21a that is connected to the right side of the inspection robot 21 and penetrates the terminal fitting 11 is pulled from the manhole M2 to inspect from the manhole M1 side toward the manhole M2 side. The robot 21 is moved. Then, the cured state of the lining material 1 is inspected while moving the inspection robot 21. Specifically, the cured state of the lining material 1 is measured by ultrasonic waves using a cured state detection instrument provided in the inspection robot 21. As described above, by inserting the inspection robot 21 into the lining material 1 before pressing the lining material 1 against the inner surface of the pipe P, the state of the lining material 1 can be inspected at any time by the inspection robot 21. Thereby, since the inspection which was conventionally performed after cutting the end portion protruding from the pipe line P of the hardened lining material 1 can be performed before the end portion is cut, re-hardening can be easily performed. , Work efficiency can be improved.

  Here, as shown in FIG. 5 which is a front view and FIG. 6 which is a side view, the inspection robot 21 includes a traveling carriage 22 provided with two wheels 22a at the front and rear, and a curing provided on the traveling carriage 22. And a state detection instrument 23. Belts 21 a and 21 b (see FIGS. 3 and 4) are connected to the front and rear of the traveling carriage 22, respectively. By being pulled by one of the belts 21 a and 21 b, the traveling carriage 22 becomes a cylindrical shaft of the lining material 1. It runs in the lining material 1 along the direction.

  The cured state detection instrument 23 includes an ultrasonic transmission unit 24, an ultrasonic reception unit 25, and a movable mechanism 26. The ultrasonic transmission unit 24 includes a tire member 41 and an ultrasonic transmission element 42. The tire member 41 is a substantially cylindrical member having an outer wall portion made of a silicon material or the like and filled with a liquid therein, and the outer peripheral surface 41a is a lining material between the front and rear wheels 22a. 1 is arranged so as to face the inner surface 1a. The tire member 41 is rotatably supported on the shaft 43. The shaft 43 is fixed to one frame 26 a included in the movable mechanism 26.

  The ultrasonic transmission element 42 is an element for transmitting ultrasonic waves, and is disposed in the vicinity of the radially outer end of the pipe line P inside the tire member 41 filled with liquid. 1 is opposed to the inner surface 1a. Further, the ultrasonic transmission element 42 is fixed to the shaft 43 that supports the tire member 41, and even if the tire member 41 rolls, the ultrasonic transmission element 42 is located near the end portion on the radially outer side of the pipe line P inside the tire member 41. It is kept in the arranged state.

  The ultrasonic receiving unit 25 includes a tire member 51 and an ultrasonic receiving element 52. The tire member 51 has the same configuration as that of the tire member 41, and the outer peripheral surface 51a of the front and rear wheels 22a is different from the outer peripheral surface 41a of the tire member 41 in the inner surface 1a of the lining material 1. It arrange | positions so that it may oppose from the part which opposes about 60 degrees in the counterclockwise direction of FIG. The tire member 51 is supported so as to be rotatable about a shaft 53. The shaft 53 is fixed to the other frame 26 b included in the movable mechanism 26.

  The ultrasonic receiving element 52 is an element for receiving ultrasonic waves, and is disposed in the tire member 51 in the vicinity of the radially outer end of the pipe line P. The ultrasonic receiving element 52 and the inner surface 1 a of the lining material 1 Opposite. In addition, the ultrasonic receiving element 52 is fixed to the shaft 53 that supports the tire member 51. Even when the tire member 51 rolls, the ultrasonic receiving element 52 is located near the end portion on the radially outer side of the pipe line P inside the tire member 51. It is kept in the arranged state.

  The movable mechanism 26 includes a pair of frames 26a and 26b that are movable. Specifically, the end of the frame 26a opposite to the end to which the shaft 43 is fixed and the end of the frame 26b opposite to the end to which the shaft 53 is fixed 26c is supported so as to be rotatable about 26c, and the distance between the pair of frames 26a and 26b can be increased or decreased with the shaft 26c as the center.

  In such a configuration, the inspection robot 21 is caused to travel within the lining material 1 by transmitting the ultrasonic wave from the ultrasonic transmission element 42 and pulling the traveling carriage 22 with the belts 21a and 21b. The element 52 receives the ultrasonic wave. At this time, since the outer peripheral surfaces 41a and 51a of the tire members 41 and 51 are in contact with the inner surface 1a of the lining material 1, when the inspection robot 21 is run, as described above, the tire members 41 and 51 (ultrasonic transmitters) 24 and the ultrasonic wave receiver 25) roll and move along the pipe P. And the inner surface 1a of the lining material 1 can be inspected widely by widening the distance between the pair of frames 26a, 26b provided in the movable mechanism 26. In particular, since the hardening of the lining material 1 is hindered at the location where the infiltrated water that has entered the pipe P and the lining material 1 come into contact, the lining material 1 is at an arbitrary position on the inner periphery of the lining material 1. By checking whether there is any uncured portion, the uncured portion of the lining material 1 can be found with certainty. The cured state detection instrument 23 may include two or more sets of the ultrasonic transmission unit 24 and the ultrasonic reception unit 25.

  The inspection robot 21 is not limited to the configuration in which the ultrasonic transmission element 42 and the ultrasonic reception element 52 are in contact with the inner surface 1a of the lining material 1, and the inspection robot 21 may be a non-contact inspection. .

  Here, in the state where the curable resin of the lining material 1 is completely cured and the state where the curing is insufficient (uncured state), the ease of propagation of ultrasonic waves is different, and in the uncured state, Compared with a completely cured state, the ultrasonic wave is easily attenuated during propagation. Therefore, a difference occurs in the intensity (that is, the amplitude of the peak) of the ultrasonic wave received by the ultrasonic receiving element 52, so that the cured state can be determined.

  When an uncured portion is found in the lining material 1, as shown in FIG. 4 (a), the inspection robot 21 is retracted in the manhole M 1, and air supplied into the lining material 1 through the hose is vaporized. And reheat the thermosetting resin with steam. Thereafter, reinspection is performed, and reheating is performed until there is no uncured portion. Thereby, since it is not necessary to lengthen the time for heat curing more than necessary, work efficiency can be improved.

  Then, after the pressure in the lining material 1 is lowered, the portion of the lining material 1 that protrudes from the pipe P is cut.

(effect)
As described above, according to the pipeline rehabilitation method according to the present embodiment, before the lining material 1 is pressed against the inner surface of the pipeline P to be rehabilitated, by inserting the inspection robot 21 into the lining material 1, The state of the lining material 1 can be inspected at any time by the inspection robot 21. Thereby, since the inspection which was conventionally performed after cutting the end portion protruding from the pipe line P of the hardened lining material 1 can be performed before the end portion is cut, re-hardening can be easily performed. , Work efficiency can be improved.

  Moreover, the cured thermosetting is performed by placing the inspection robot 21 in the non-impregnated portion of the lining material 1 so that there is no thermosetting resin that affects the function of the inspection robot 21. Since the resin does not affect the inspection robot 21, it is possible to avoid the inspection robot 21 from moving due to the cured thermosetting resin.

  Moreover, the presence or absence of the uncured part in the lining material 1 can be examined by inspecting the cured state of the lining material 1 after performing the curing process with the cured state detection instrument 23.

(Modification)
The pipeline rehabilitation method according to the first embodiment may be as follows. That is, as shown in FIG. 7A, the lining material 1 is inserted into the pipe P from the left manhole M1 in the drawing, and the thermosetting from the end fitting 11 to the drain discharge hole 12 at the tip of the lining material 1 is performed. The resin non-impregnated portion (shaded portion) is positioned in the manhole M2, and the rear end 1b is positioned in the manhole M1. Thereafter, the inspection robot 21 is also drawn into the pipe P, and the inspection robot 21 is positioned between the terminal fitting 11 and the drain discharge hole 12. Thereafter, the rear end 1 b of the lining material 1 is closed with the metal fitting 13.

  Next, as shown in FIG. 7B, the lining material 1 is expanded and pressed against the inner surface of the pipe P, and the thermosetting resin contained in the lining material 1 is heated and cured with steam. Thereafter, the inspection robot 21 is moved from the manhole M2 side toward the manhole M1 side by pulling the belt 21b connected to the left side of the inspection robot 21 from the manhole M1 side. Inspect. The same effects as in the first embodiment can be obtained by such a procedure.

  The inspection robot 21 placed in the lining material 1 may be drawn into the pipeline P at the same time as the lining material 1 is drawn into the pipeline P.

[Second Embodiment]
(Pipeline rehabilitation method)
Next, the pipeline rehabilitation method according to the second embodiment of the present invention will be described. In addition, about the same component as the component mentioned above, the same reference number is attached | subjected and the description is abbreviate | omitted. The pipe rehabilitation method of the present embodiment is different from the pipe rehabilitation method of the first embodiment as shown in FIG. 8 in that the end of the lining material 1 is located in the pipe P ′ adjacent to the pipe P to be rehabilitated. It is a point where one end side where the metal fitting 11 is located and a point where the inspection robot 21 includes a television camera.

  First, as shown in FIG. 8A, the lining material 1 is inserted into the pipe P from the manhole M1 on the left side in the drawing, and the wire 11a connected to the terminal fitting 11 that closes one end of the lining material 1 is connected. By pulling with a winding device (not shown) on the right side of the manhole M3 in the figure, one end side of the lining material 1 is located in the pipe line P ′ and the manhole M2, and the rear end 1b is located in the manhole M1. Thus, the lining material 1 is drawn into the pipe P. At this time, the inspection robot 21 is inserted in advance between the drain discharge hole 12 provided on one end side of the lining material 1 and the terminal fitting 11, and the belt 21a connected to the right side of the inspection robot 21 is placed on the manhole M3. By pulling, the inspection robot 21 is pulled into the pipeline P together with the lining material 1. A belt 21b is connected to the left side of the inspection robot 21. Then, the terminal fitting 11 is positioned in the pipe line P ′, and the drain discharge hole 12 is positioned in the manhole M2. Further, the inspection robot 21 is positioned between the drain discharge hole 12 and the terminal fitting 11. Here, the tip portion (shaded portion) from the terminal fitting 11 to the drain discharge hole 12 of the lining material 1 is a thermosetting resin non-impregnated portion that does not contain the thermosetting resin. In addition, the closing metal fitting 32 is arrange | positioned in the manhole M2.

  Here, a pillow (drain removing means) 31 is inserted into the lining material 1. The pillow 31 is a material in which a material having a specific gravity higher than that of water, such as a polymer absorbent material, is placed inside the cylindrical fabric. A belt 31 a is connected to the right side of the pillow 31, and a belt 31 b is connected to the left side of the pillow 31. Here, the belt 31a connected to the right side of the pillow 31 passes through the hole 33 provided in the lining material 1 so as to be positioned in the manhole M2, and is pulled from above the central manhole M2. On the other hand, the belt 31b connected to the left side of the pillow 31 is pulled from above the manhole M1. Thereafter, the rear end 1 b of the lining material 1 is closed with the metal fitting 13. Since one end side of the lining material 1 is closed by the terminal fitting 11, both end portions of the lining material 1 located outside the pipe line P are closed.

  Next, as shown in FIG. 8B, a hose (not shown) is connected to the lining material 1 via the metal fitting 13, and air is supplied into the lining material 1 via the hose to provide the lining material 1. Is pressurized from the inside. Thereby, the lining material 1 expands and is pressed against the inner surface of the pipe P.

  Thereafter, the belt 21b connected to the left side of the inspection robot 21 is pulled from above the manhole M1, thereby moving the inspection robot 21 to the left side, or the belt 21a connected to the right side of the inspection robot 21 from above the manhole M3. By pulling, the inner surface of the lining material 1 is photographed by the television camera provided in the inspection robot 21 while moving the inspection robot 21 to the right side. Images taken by the television camera are displayed on a ground monitor (not shown) via a cable (not shown). Thereby, the state of the inner surface of the lining material 1 that has conventionally only been confirmed after cutting the end portion can be confirmed before the end portion is cut.

  Next, as shown in FIG. 8 (c), the inspection robot 21 is arranged at the distal end located in the pipe line P ′ of the lining material 1, and the position between the inspection robot 21 and the drain discharge hole 12 is opened and closed. Close with possible closure fitting 32. Thereby, the inspection robot 21 can be retracted to a portion of the lining material 1 that does not include the thermosetting resin. In addition, illustration of the belt 21b is abbreviate | omitted in FIG.8 (c).

  Thereafter, the air supplied into the lining material 1 via the hose is switched to steam, and the thermosetting resin contained in the lining material 1 is heated with steam while pressing the lining material 1 against the inner surface of the pipe P. Harden. Vapor is discharged from the drain discharge hole 12 to the outside. Here, the inspection robot 21 can be protected from the steam that heats the lining material 1 by retracting the inspection robot 21 in the thermosetting resin non-impregnated portion of the lining material 1 by the closing metal fitting 32.

  While being heated with steam, the steam is liquefied and becomes drainage and accumulates at the bottom of the lining material 1. If drain accumulates at the bottom of the lining material 1, the temperature rise at the bottom of the lining material 1 is hindered by the drain, which becomes an uncured factor of the thermosetting resin. Therefore, the pillow 31 is pulled in the axial direction of the pipe line P by pulling the belt 31a connected to the right side of the pillow 31 from the manhole M2 or pulling the belt 31b connected to the left side of the pillow 31 from the manhole M1. The drain accumulated in the bottom of the lining material 1 is swept out from the inside of the pipe P. Thereby, it can suppress that hardening of the lining material 1 is prevented by drain. The pillow 31 may absorb drain.

  After heating for a predetermined time, the steam supplied into the lining material 1 is switched to air, and the lining material 1 is cooled with air.

  Next, as shown in FIG. 8D, the closing metal fitting 32 is opened. Since the portion of the lining material 1 closed by the closing metal fitting 32 does not contain thermosetting resin, the portion of the lining material 1 closed by the closing metal fitting 32 opens the closing metal fitting 32 without being cured. As a result, the inspection robot 21 can pass through. Thereafter, by pulling the belt 21b connected to the left side of the inspection robot 21 from the manhole M1, the inspection robot 21 is moved from the pipe line P 'side toward the manhole M1 side. Then, the cured state of the lining material 1 is inspected with ultrasonic waves while moving the inspection robot 21.

  When an uncured portion is found in the lining material 1, as shown in FIG. 8C, the inspection robot 21 is retracted in the pipe line P ′ to close the closing fitting 32, and the lining material is connected via a hose. The air supplied into 1 is switched to steam, and the thermosetting resin is reheated with steam. Thereafter, reinspection is performed, and reheating is performed until there is no uncured portion.

  Then, after the pressure in the lining material 1 is lowered, the portion of the lining material 1 that protrudes from the pipe P is cut.

(effect)
As described above, according to the pipe line rehabilitation method according to the present embodiment, the position between the inspection robot 21 and the drain discharge hole 12 in the thermosetting resin non-impregnated portion of the lining material 1 is closed by the closing metal fitting 32. Thus, the inspection robot 21 can be retracted in the thermosetting resin non-impregnated portion of the lining material 1. Thereby, the inspection robot 21 can be protected from the steam that heats the lining material 1. Further, the portion of the lining material 1 that has been closed by the closing fitting 32 is not cured because it is not impregnated with the thermosetting resin, and is opened when the closing fitting 32 is opened, so that the inspection robot 21 can be easily passed. be able to.

  In addition, by photographing the inner surface of the lining material 1 in close contact with the inner surface of the pipe P with a television camera, the state of the inner surface of the lining material 1 that has conventionally only been confirmed after cutting the end portion can be Can be confirmed before cutting.

  Further, by removing drain accumulated in the bottom of the lining material 1 with the pillow 31 placed in the lining material 1 together with the inspection robot 21, it is possible to suppress the hardening of the lining material 1 from being hindered by the drain. it can.

(Modification)
The pipeline rehabilitation method according to the second embodiment may be as follows. That is, in FIG. 8A, the inspection robot 21 placed between the drain discharge hole 12 and the terminal fitting 11 is not drawn into the pipe P together with the lining material 1, but from the rear end 1b of the lining material 1 to the pillow. The inspection robot 21 is inserted together with 31. Then, as shown in FIG. 8B, after the lining material 1 is pressed against the inner surface of the pipe P, the belt 21a connected to the right side of the inspection robot 21 is pulled from above the manhole M3, so that the lining material 1 The inspection robot 21 is moved toward the pipe P ′ while photographing the inner surface with a television camera. Even by such a procedure, the state of the inner surface of the lining material 1 that has conventionally only been confirmed after cutting the end portion by photographing the inner surface of the lining material 1 in close contact with the inner surface of the pipe P with a television camera. Can be confirmed before cutting the edge.

(Modification of this embodiment)
The embodiments of the present invention have been described above, but only specific examples are illustrated, and the present invention is not particularly limited. Specific configurations and the like can be appropriately changed in design. Further, the actions and effects described in the embodiments of the invention only list the most preferable actions and effects resulting from the present invention, and the actions and effects according to the present invention are described in the embodiments of the present invention. It is not limited to the ones.

  For example, the closing bracket 32 used in the second embodiment may be used in the first embodiment. Specifically, in the case where steam is supplied from the terminal fitting 11 side in FIG. 4A, or in FIG. 7A, the position between the drain discharge hole 12 and the inspection robot 21 in the lining material 1 is closed. By closing with the metal fitting 32, the inspection robot 21 may be retracted in the thermosetting resin non-impregnated portion of the lining material 1. Thereby, the inspection robot 21 can be protected from the steam that heats the lining material 1.

DESCRIPTION OF SYMBOLS 1 Lining material 1a Inner surface 1b Rear end 2 Base material 3, 4 Cylindrical fabric 5 Coating 11 Terminal metal fitting 11a Wire 12 Drain discharge hole (hole)
13 Bracket 21 Inspection robot (lining material inspection device)
21a, 21b Belt 22 Traveling carriage 22a Wheel 23 Curing state detection instrument 24 Ultrasonic transmitter 25 Ultrasonic receiver 26 Movable mechanism 26a, 26b Frame 26c Shaft 31 Pillow 31a, 31b Belt 32 Closing bracket 33 Hole 41, 51 Tire member 41a , 51a Outer peripheral surface 42 Ultrasonic transmitter 43 Axis 52 Ultrasonic receiver 53 Axis M1, M2, M3 Manhole P Pipe

Claims (4)

An insertion step of inserting a tubular lining material containing a curable resin into the rehabilitation target pipeline;
A pressing step of pressing the lining material into the rehabilitation target pipeline by pressing the lining material inserted into the rehabilitation target pipeline from the inside;
A curing step of curing the lining material while pressing the lining material on the inner surface of the rehabilitation target pipeline;
In the pipeline rehabilitation method with
An inspection device placement step of placing a lining material inspection device in the lining material before performing the pressing step;
An inspection step of inspecting the state of the lining material inserted into the rehabilitation target pipeline by the lining material inspection device;
Equipped with a,
The lining material has a curable resin non-impregnated portion not containing a curable resin at its end,
In the insertion step, the lining material is inserted so that the curable resin non-impregnated portion is located outside the pipeline to be rehabilitated,
In the inspection device arranging step, the lining material inspection device is placed in the curable resin non-impregnated portion . The curing step is a step of curing a curable resin from the inside of the lining material,
2. The conduit according to claim 1 , wherein in the curing step, the curing medium is discharged from a hole provided between the lining material inspection device and the rehabilitation target conduit in the curable resin non-impregnated portion. Rehabilitation method. In the inspection device arranging step, after the lining material inspection device is placed in the curable resin non-impregnated portion, the position between the lining material inspection device and the hole in the curable resin non-impregnated portion can be opened and closed. The pipe line rehabilitation method according to claim 2 , wherein the pipe rehabilitation method is closed with a closing metal fitting. The lining material inspection device includes a cured state detection instrument for measuring the cured state of the lining material,
In the said inspection process, the hardening state of the said lining material after performing the said hardening process is test | inspected with the said hardening state detection instrument, The pipe line rehabilitation method in any one of Claims 1-3 characterized by the above-mentioned. .

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