JP2009214407A - Conduit reconditioning method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conduit reconditioning method which can eliminate as quickly as possible, irregularities in a light irradiation level to a tubular lining material, which occur in photocuring operation. <P>SOLUTION: This photocuring method of a tubular lining material 100 includes: a tubular lining material introduction process to introduce a photocurable tubular lining material 100 which is yet uncured into a sewage main pipe 200 and expand the diameter of the tubular lining material 100 along the inner wall of the sewage main pipe 200 and; a photocuring process to run a lamp train 10 of a plurality of light emitting means connected in series inside the introduced tubular lining material 100 and cure the tubular lining material 100. In this photocuring method, individual light irradiation control is performed to individually control turning-on/off of the lamps on the lamp train. Thus, an appropriate photocuring process corresponding to the thickness and pipe diameter of the tubular lining material and further temperature difference in season and area can be performed, and the light irradiation level per light irradiation region of each lamp can be made when initiating and terminating the run of the lamp train. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pipe rehabilitation method, in particular, a pipe line in which an uncured tubular lining material impregnated with resin is introduced into an existing pipe buried in the ground such as a sewer, and is cured by light irradiation after introduction. Rehabilitation method.

  When sewer pipes are used for many years, aging phenomena such as cross-sectional deformation, disconnection of pipes, and cracks in pipes appear, which causes problems such as a decrease in flow force and an increase in the amount of sewage treatment due to ingress of groundwater into the pipes. Is happening. In order to solve such a problem, various repair techniques have been conventionally employed. However, as a method for performing the process without excavating the ground, a technique for introducing a tubular lining material into an existing pipe and then hardening it is known. ing.

  In such a tubular lining material, for example, a core material is formed of glass fiber, felt (nonwoven fabric), or a combination of both, and the core material is impregnated with a resin. The impregnating resin has a configuration in which a photoinitiator is mixed into a resin such as a vinyl ester resin or an unsaturated polyester resin and is cured by light. In addition, since the surface of the uncured tubular lining material is sticky, outer and inner films are coated on the front and back surfaces of the tubular lining material in order to avoid adhesion to other objects. Yes.

  Then, an uncured tubular lining material is introduced into an existing pipe, pressure air or the like is blown into the existing pipe, and is brought into close contact with the inner surface of the existing pipe, which is cured by processing from the inside. That is, it is a repair technique that does not destroy or remove the existing pipe, but forms a new pipe in the existing pipe.

  Further, in this technique, there are a photocuring method by irradiation with ultraviolet rays and a thermosetting method by warm water or steam depending on the kind of the curing agent added to the resin impregnated in the core material. As techniques of the photocuring method, techniques such as Patent Document 1 and Patent Document 2 are known.

  In the technique of Patent Document 1, a fiber hose with a wall thickness of 10 mm or more impregnated with resin is put in a damaged part of an existing pipe, and the resin is cured after being in close contact with the inner wall of the existing pipe. Is the method. The resin to be impregnated contains a UV initiator and an organic peroxide, and curing is performed by a light irradiation device consisting of at least two UV lamps arranged one behind the other with an output of at least 400 watts each.

  In addition, Patent Document 2 discloses that a tubular lining material has an inner and outer two-layer structure and an inner layer is made of a photo-curing resin suitable for curing by light irradiation in order to more accurately cure the tubular lining material in an existing pipe. And forming an outer layer of a thermosetting resin suitable for curing by applying heat.

  The technique of Patent Document 2 is a technique for compensating for the respective disadvantages of the photo-curing lining material and the thermosetting lining material. That is, the disadvantage of the photo-curing type lining material is that the curing speed is fast, but only for the lining material having a thickness of 10 or less mm due to the limitation of the light penetration depth, It cannot be applied to repair of large-diameter pipes that require thick materials. On the other hand, the disadvantage of thermosetting lining materials is that thick materials can be cured, but the curing time is longer than that of the photo-curing type, and a large heating equipment for curing is required, resulting in poor workability. Is.

  In order to eliminate these drawbacks, the tubular lining material is divided into two layers, the inner layer is a photocurable layer, the outer layer is a thermosetting layer, and the thinned inner layer is photocured, The outer layer is cured by adding heat generated by the reaction heat and heating means. Thereby, the hardening operation | work of the tubular lining material of the thickness difficult to solidify the whole only by light irradiation can be performed by comparatively simple structure and operation | work.

  The applicant of the present application has also proposed a tubular lining material that has both photocuring and thermosetting properties.

  For example, a metal halide gallium lamp (400 to 1000 w) or the like is used as the ultraviolet light emitting means for light irradiation on the above-described uncured tubular lining material. The present applicant has also proposed a light irradiation device in which about 20 LEDs having a single power of 5 to 20 W are mounted on a columnar body. In the case of ultraviolet light emitting means such as metal halide gallium lamps, a plurality of, for example, about 6 lamps are connected in series at regular intervals and used as a light toilet with a total length of 3 to 4 m, and at a predetermined moving speed, with a tubular lining. A photocuring operation is performed by running through the material and irradiating with light during the running. Note that a plurality of serial connections are also possible for light emitting devices equipped with LEDs.

JP 2003-48248 A JP 2003-33970 A

  In the conventional hardening operation of the tubular lining material by light irradiation, a plurality of light emitting means are connected as described above to constitute a so-called lamp train, and the tubular lining material is caused to travel. The lamp train generally has a total length of about 3 to 4 m. In order to perform light irradiation on the tubular lining material during traveling in a quantitative and qualitative manner, the light irradiation by the lamp train is performed during the traveling. It is necessary to accurately adjust the speed and emission intensity.

  Further, in this light irradiation, when the light emission is started by simultaneously turning on the plurality of light-emitting means constituting the lamp train and is turned off simultaneously by the end of running, the light to the tubular lining material at the start and end Quantitative unevenness occurs in irradiation. That is, at one end side of the tubular lining material, the “starting point”, which is the time when the ramp train starts to travel, and the “end point” portion where the traveling ends and arrives at the other end side of the tubular lining material, respectively. Irradiation unevenness occurs.

  That is, at the starting point of travel, for example, in a six-connected lamp train, the end portion of the tubular lining material which is the last in the traveling direction is irradiated with the first main light by the light emission by the last light emitting means. The That is, when the last light emitting means moves by traveling, there is no passage of the next light emitting means. On the other hand, the tubular lining material in the region where the leading light emitting means is located also sequentially receives light from the second and subsequent light emitting means from the traveling direction as the lamp train travels. In this way, unevenness in the amount of received light occurs in the tubular lining material in each region of the six light emitting means.

  This situation also occurs at the end point, which is the end of the ramp train travel. That is, at the end point of traveling, the end portion of the tubular lining material in the region where the leading light emitting means in the traveling direction of the lamp train is located, the light from the leading light emitting means is the first and last light reception. On the other hand, the tubular lining material in the region where the last light emitting means is located has already received light from the first light emitting means up to the fifth light emitting means when the last light emitting means arrives. is there. In this way, even at the travel end point of the lamp train, unevenness in the amount of received light occurs in the tubular lining material in each region of the six light emitting means.

  The present invention has been made in view of the situation of light irradiation by running of the above conventional serially connected light irradiation device, and its purpose is to minimize the unevenness of the light irradiation amount to the tubular lining material generated in the photocuring operation. An object of the present invention is to provide a method for rehabilitating a pipeline that can be eliminated.

In order to achieve the above object, the pipeline rehabilitation method according to claim 1,
A tubular lining material introducing step of drawing at least a photocurable uncured tubular lining material into an existing pipe to be rehabilitated and expanding the diameter of the tubular lining material along the inner wall of the existing pipe; and the introduced tubular Within the lining material, a light irradiation device in which a plurality of light emitting means are connected in series is run, and light irradiation from the light irradiation device is individually controlled for each light emitting means to switch on / off the light emitting means. And a photocuring step performed by individual control of light irradiation.

  With this configuration, light irradiation by a light irradiation device that is generally connected to a length of several meters can be individually and accurately performed on the tubular lining material in the region where each light emitting means is located. For example, it is also possible to adjust the number of light emitted by the light emitting means constituting the light irradiation device according to the thickness of the tubular lining material and the tube diameter. In addition, the temperature of the existing pipe is affected by the underground temperature, which varies depending on the season and region, and the tubular lining material introduced there is also affected by the temperature of the existing pipe. The number of light-emitting means that are turned on in accordance with the temperature can be adjusted by the control.

  Furthermore, on the basis of this configuration, it is possible to adjust the irradiation amount for each light irradiation region of each light emitting means at the start or end of travel of a light irradiation device described later.

The pipeline rehabilitation method according to claim 2 is:
The tubular lining material is characterized in that it has both photocuring and thermosetting properties. As for the tubular lining material having both light and heat curable properties, the applicant of the present application has been proposing and implementing, and compared with the tubular lining material having only one curable property so far, More accurate light irradiation is required. That is, the entire curable tubular lining material is cured by light irradiation, but first, the photocurable curing agent is cured by crosslinking reaction. The thermosetting curing agent undergoes a crosslinking reaction and cures by the reaction heat generated during the curing.

  Therefore, when a part with an excessive irradiation time occurs in the tubular lining material, the temperature of the part is excessively increased, and volatile organisms in the resin composition, for example, styrene is vaporized before the curing reaction to form bubbles and enter the lining material. There is a possibility that the quality after curing may be deteriorated. On the other hand, if a portion with insufficient irradiation time is generated in the tubular lining material, the reaction heat of photocuring in that portion is not sufficiently generated, and there is a possibility that heat curing may be insufficient. There are also problems peculiar to tubular lining materials having the following curability. In this way, both light and heat curable tubular lining materials are required to be irradiated with uniform light with higher accuracy than in the case of conventional tubular lining materials with pure photocuring properties. Therefore, it is meaningful to achieve uniform irradiation by the individual light irradiation control according to the first aspect of the present invention, and to further uniform the light irradiation by the individual light irradiation control of the third and subsequent claims. Is.

The pipeline rehabilitation method according to claim 3 is:
The light irradiation individual control secures a stop state for a predetermined time before the travel at the starting position where the light irradiation device starts traveling in the tubular lining material, and the light irradiation is performed in the stop state at the start position. It is characterized in that it is lit in a predetermined time sequentially from the rear light emitting means toward the front light emitting means in the direction of travel of the apparatus.

  With this configuration, there is a difference in the illumination time of light in the end region of the tubular lining material at the “starting point” which is the starting point where the light irradiation device is allowed to travel in the tubular lining material. Can be suppressed as much as possible. That is, during the stop state at the starting position of the start of traveling movement, light irradiation is started in order from the last light emitting means in the traveling direction, and the light is passed to the first light emitting means at predetermined time intervals to pass. The region where the number of light emitting units to be performed is smaller, the light emitting units are turned on earlier. Therefore, by sequentially turning on the light emitting means at intervals corresponding to the traveling speed of the light irradiation device, it is possible to ensure a uniform light irradiation time to the tubular lining material at the starting position of the light irradiation device. Irradiation unevenness can be suppressed.

The pipeline rehabilitation method according to claim 4 is:
The light irradiation individual control secures a stop state for a predetermined time after the travel at the end point position where the travel movement of the light irradiation device in the tubular lining material is completed, and the light irradiation device in the stop state at the end point position. The light is turned off sequentially from the rear light emitting means toward the front light emitting means at predetermined time intervals in the traveling direction.

  With this configuration, at the “end point” where the light irradiation device has finished traveling within the tubular lining material, it is possible to make a difference in the illumination time of light to the tubular lining material at that position as much as possible. Can be suppressed. In other words, during the stop state at the end point where the travel movement is completed, the light emission starts from the last light emitting means in the traveling direction, and the light is sequentially turned off to the first light emitting means every predetermined time to pass. The region where the number of light emitting means is small can be turned on longer for a region. Therefore, by sequentially turning off the light-emitting means at intervals corresponding to the traveling speed of the light irradiation device, it is possible to ensure a uniform light irradiation time to the tubular lining material at the end point position of the light irradiation device, Irradiation unevenness can be suppressed.

The pipeline rehabilitation method according to claim 5 is:
In the individual light irradiation control, the light emitting means of the light irradiation device is divided into a plurality of light emitting means groups, and lighting and / or turning off at the predetermined time is performed for each group. With this configuration, the number of objects to be turned on / off after a predetermined time is reduced, and the individual light irradiation control by the light irradiation device can be facilitated. Although the fineness is inferior to the configurations of claims 2 and 3, the light irradiation work time is increased and complicated while suppressing unevenness of light irradiation in the end region which is the starting point and the end point of the tubular lining material. Can be prevented.

The pipeline rehabilitation method according to claim 6 is:
The light irradiation individual control turns on only one or a plurality of light emitting means on the rearmost side in the traveling direction of the light irradiation device at the starting position where the light irradiation device starts to move in the tubular lining material. And reciprocating within a range of only the distance of the full length of the light irradiation device from the starting position in the partially lit state, the reciprocating step being performed a predetermined number of times and sequentially moving distance for each reciprocating movement It is characterized in that the process is terminated with a shortening.

  With this configuration, similar to the method according to claim 4, it is possible to reduce the time difference of light irradiation at the starting position of the light irradiation device, and to achieve uniform curing by light at the end position of the tubular lining material. And the accuracy of the curing operation is improved.

The pipeline rehabilitation method according to claim 7 is:
In the light irradiation individual control, only one or a plurality of light emitting means on the leading side in the traveling direction of the light irradiation device is turned on at the end point position where the traveling movement of the light irradiation device ends in the tubular lining material And reciprocating backward from the end position in the partially lit state only within a distance corresponding to the entire length of the light irradiation device, the reciprocating step being performed a predetermined number of times, and moving sequentially for each reciprocating movement. It is characterized by shortening the distance and ending.

  With this configuration, similarly to the method according to claim 5, it is possible to reduce the time difference of light irradiation at the end point position of the light irradiation apparatus, and to achieve uniform curing by light at the end position of the tubular lining material. And the accuracy of the curing operation is improved.

  According to the pipeline rehabilitation method according to the present invention, the light to the tubular lining material generated in the photocuring method work is individually controlled by turning on / off the light emitting means of the light irradiation device configured by connecting the light emitting means in series. Irradiation unevenness can be eliminated as much as possible.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a state in which the lamp train 10 is installed in a sewer main 200 to which the photocuring method according to the present embodiment is applied. For simplification of the drawing, the illustration of a mounting pipe and the like coupled to the sewer main 200 for allowing rainwater and general drainage to flow into the sewer main 200 is omitted. Also, for simplification of the drawings, the size of other constituent members with respect to the inner diameter and length of the sewer main 200 is not the same scale (the same applies to the following drawings).

  The lamp train 10 is No. 1 to No. 6 lamps indicated by reference numeral 6 are connected in series. In the figure, the right lamp train 10 indicated by a solid line is in a starting position where it starts running, and the left side is indicated by a broken line. After the ramp train 10 shown in the drawing, it is in a state where it is at the end point position that has arrived at the opposite end. Also, for the sake of clarity, the traveling legs and wheels provided in the ramp train 10 are omitted.

  Here, the preparatory preparation for the photocuring of the tubular lining material 100 will be described first. As illustrated, a sewer main pipe 200 that is an existing pipe to be repaired in this example is formed between vertical shafts 300 and 400 called so-called manholes. In performing the repair, as a preparation, a water stop member (not shown) is installed on the upstream side of the manhole 300 to block the upstream side of the sewer main 200. In the state shown in this figure, the tubular lining material 100 has already been drawn into the sewer main 200, and the diameter expansion work for bringing it into close contact with the inner peripheral surface of the sewer main 200 has also been completed. Yes.

  Although the tubular lining material 100 can be pulled in as it is, the tubular lining material 100 can be pulled into the sewer main 200 while the uncured tubular lining material 100 is reversed from the tip side. Reversal introduction that pushes in is also preferably used.

  The diameter expansion operation is performed by blowing shaping air into the tubular lining material 100. For this purpose, end packers for sealing the tubular lining material 100 at both ends of the tubular lining material 100 (see FIG. (Not shown) are attached. Then, air is blown in from the end packer side at the end on the manhole 300 side, thereby increasing the pressure in the tubular lining material 100 and shaping the tubular lining material 100 along the inner wall of the sewer main 200. Is.

  As described above, when the installation of the uncured tubular lining material 100 is completed, light irradiation by the lamp train 10 that is a light irradiation device is performed thereafter. As shown in the figure, the ramp train 10 travels in the tubular lining material 100 by being pulled to the manhole 300 side by a pulling wire 800 from a position installed at the end of the tubular lining material 100 on the manhole 400 side. Then, during the traveling, the tubular lining material 100 is irradiated with light from the inside to be cured.

  FIG. 2 is an explanatory diagram of a state in which the lamp train 10 is at a starting position that is a position at which traveling starts. 1-No. 6 in which light emitting means (lamps) No. 6 (No. in each lamp in the drawing) are connected in series is used. For example, a metal halide gallium lamp (400 to 1000 w) is used as the lamp. In addition, it is also possible to use LED as a light emission part, for example, it is also possible to form light emission means by installing about 20 LEDs with a single power of 5 to 20 W at a predetermined interval on the surface of a columnar body part. It is.

  In the case of the metal halide gallium lamp used in the present embodiment, six lamps are connected in series at regular intervals to form a light toilet 10 having a total length of 3 to 4 m. The ramp train 10 travels by being pulled by the pulling wire 800 in the direction of the arrow 500 in the figure. The moving speed is about 0.5 to 2.0 m / min when the tube diameter of the tubular lining material 100 is 250 to 600 mm and the thickness is 8 to 25 mm.

  The state shown in FIG. 2 is a state where the ramp train 10 exists at the starting point where the driving operation starts, and in this state, no. 1 to No. When all the lamps 6 are turned on (lighted) at the same time and the running operation is started simultaneously with the turning-on operation, in the area AR of the tubular lining material 100 that receives light irradiation at the starting position of the lamp train 10, Unevenness occurs in the time (light reception amount) of receiving light irradiation for each region (R1 to R6).

  FIG. 3 shows the speed at which the lamp train 10 passes through the region AR of the tubular lining material 100 facing the starting position at time 6t (speed at which each of the lamps passes through a corresponding region at time 1t). The light irradiation time (light irradiation amount) to each area | region R1-R6 in the case of driving | running | working is shown. That is, the horizontal axis represents the region in the traveling direction of the lamp train 10 of the tubular lining material 100, and the vertical axis represents the light irradiation time. In order to facilitate understanding, it is assumed that each lamp starts the rated light irradiation at the same time as the on-operation, and each lamp is assumed to irradiate light only to the opposing region.

  As shown in the drawing, in the last R6 region, the left end portion in the region R6 in the figure is irradiated for the time 1t, but the right end portion in the drawing is almost irradiated with light because the lamp moves immediately. I can't. When the lamp train 10 travels at a constant speed, the regions R5 to R1 corresponding to the lamps are in the same situation, and as shown in the drawing, the irradiation time for each region, in other words, the light reception time in each region is It is shown as a straight line with a constant slope. Note that the area of the tubular lining material 100 on the left side of the figure relative to the area AR is No. from the unirradiated state. 1 to No. Since the entire length of all the 6 lamps passes evenly, the light receiving time 6t is all secured.

  As described above, in the situation where the running operation is started with the lamp train 10 starting at the full lighting state, it is inevitable that the unevenness of the light receiving time occurs in the area AR of the opposing tubular lining material 100. Therefore, in the pipe line rehabilitation method according to the present embodiment, a certain stop time is secured at the starting position, and adjustment is performed by gradually turning on each lamp during the stop time.

  FIG. 4 shows the state of on / off control of each lamp of the lamp train 10 at the starting position, with the elapsed time on the horizontal axis and the on / off state of each lamp on the vertical axis. As shown in FIG. 6 is turned on, and the elapsed time begins to be calculated. When the time 1t elapses, that is, when the travel time of one lamp when the lamp train 10 travels elapses, the lamp no. No. 5 is turned on and lamp No. 4 is turned on, and the lamp No. 3. Lamp No. 2. Lamp No. 1 is turned on every time 1t elapses. That is, all lamps are turned on at time 5t.

  FIG. 5 shows that during the stop time 6t at this starting position, the lamp No. 1-No. 6 indicates the time of light irradiation on the corresponding regions R1 to R6 of the tubular lining material 100, and the horizontal axis indicates each lamp No. 6-No. Regions R6 to R1 of the tubular lining material 100 facing 1 are taken, and the elapsed time is taken on the vertical axis. As shown in the figure, the light irradiation time 6t for the region R6, the region R5 is the time 5t, the region R4 is the time 4t, the region R3 is the time 3t, the region R2 is the time 2t, and the region R1 is the time 1t. The start of the running operation of the lamp train 10 is when the time 6t has elapsed, that is, when all the lamps have been turned on at the time 5t and the time 1t has elapsed.

  In FIG. 6, the horizontal axis shows regions in the traveling direction of the lamp train 10 of the tubular lining material 100, and the vertical axis shows the light irradiation time by the lamp train 10 to these regions. After the time 6t has elapsed, the time from when the ramp train 10 starts to travel to the time when the time nt has elapsed is shown. As shown in the figure, the ramp train 10 shown in FIG. The difference in the light irradiation time between the regions R6 to R1 generated is substantially eliminated by the time difference light irradiation for each region during the stop time at the starting position shown in FIG.

  That is, in addition to the difference in light irradiation time (shown in FIG. 3) to the respective areas R1 to R6 during traveling, which are hatched in the figure, the areas R1 to R1 that are stopped as shown in FIG. The stepwise irradiation times to R6 (portions shown in gray in the figure) are summed up, and the light irradiation time (light receiving time) is almost the same for all areas.

  In the region AR, the irradiation time line 600 has a sawtooth shape. This is the same as the line shown in FIG. 3, but the starting position, that is, the region where each lamp faces the tubular lining material 100. Since the AR starts from the position inside and moves away from the facing position, there is a difference in light irradiation. That is, in a situation where the lamp is traveling in the left direction in the figure, the light irradiation is completed from the area on the right side in the figure, and thus such a waveform is obtained.

In the present embodiment, all the lamps are turned on at time 5t, and then stopped for time 1t. After the time 6t has elapsed, the above-mentioned sawtooth waveform portion is displayed on the tubular lining. The light irradiation time is longer than that on the left side in the figure than the region AR of the material 100. In other words, the area AR has a slightly longer light reception time than the other parts, but the light at the start of travel described above even when the travel is started when all lamps are turned on after the elapse of time 5t. Irradiation time unevenness can be eliminated. In this case, the area AR has a slightly shorter light receiving time than the other areas. In the area ahead of the area AR (on the left side in the figure), all lamps start to pass from the beginning and the time taken to pass to the rear end of the last lamp is common.
It is not a sawtooth line but a straight line.

  Next, an embodiment for preventing unevenness of light irradiation on the tubular lining material 100 at the end point position where the lamp train 10 travels and reaches the other end of the tubular lining material 100 will be described with reference to the drawings. To do.

  FIG. 7 shows a state in which the lamp train 10 is at the end position where it reaches the end of the other side (manhole 300 side) of the tubular lining material 100. For the sake of simplification as in FIG. 1, traveling legs and wheels provided in the ramp train 10 are omitted. As shown in the drawing, the lamp train 10 in which six lamps are connected is pulled by the pulling wire 800 to reach the end of the tubular lining material 100 on the other manhole 300 side and stops at the end point position.

  For example, when the end position is reached, No. 1 to No. In the case where all the lamps 6 are simultaneously turned off (turned off), light irradiation is performed for each corresponding region (R1 to R6) of each lamp in the entire region BR of the tubular lining material 100 that is irradiated with light at the end point position of the lamp train 10. Unevenness occurs in the time (amount of received light) received.

  FIG. 8 shows that the ramp train 10 that has traveled at the speed at which the lamp train 10 passes through the entire area BR at time 6t ((speed at which each individual lamp passes through the corresponding one area at time 1t) is at this end position. This shows the situation of unevenness in the amount of received light in each of the regions R7 to R12 when all the lamps are turned off (turned off) at that time. The amount of light received in each region is indicated by a straight line with a downward slant because the lamp does not pass easily.As in FIG. 3, each lamp starts rated light irradiation simultaneously with the ON operation, and each lamp Is shown to irradiate light only to the opposing areas.

  As described above, when the lamp train 10 arrives at the end point, it is inevitable that a difference in the light receiving time occurs in the region BR of the tubular lining material 100 facing the lamp train 10. Therefore, in the pipeline rehabilitation method according to the present embodiment, adjustment is not performed by immediately turning off at the end point, but by securing a certain stop time and gradually turning off each lamp at the stop time. Is what you do.

  FIG. 9 shows a state of on / off control of each lamp of the lamp train 10 at the end point position. As shown in the figure, first, when the time 1t has elapsed since arrival at the end point, the lamp No. 6 is turned off. Furthermore, when the time 2t has elapsed since arrival, the lamp No. 5 is turned off and the lamp no. 3 is the lamp No. 3 when the time 4t has elapsed. 4 is the lamp no. 2 is the lamp no. 1 is turned off. That is, all the lamps are turned off after a lapse of time 6t after the lamp train 10 arrives at the end point.

  FIG. 10 shows that during the stop time 6t at this end position, the lamp No. 1-No. 6 shows the time during which the regions R7 to R12 of the corresponding tubular lining material 100 are irradiated with light. As illustrated, the region R12 has a time 6t, the region R11 has a time 5t, the region R10 has a time 4t, the region R9 has a time 3t, the region R8 has a time 2t, and the region R7 has a time 1t.

  In FIG. 11, the horizontal axis indicates regions in the length direction of the tubular lining material 100, and the vertical axis indicates the light irradiation time by the lamp train 10 for these regions. The time until the time 6t elapses after the stop at the end point position is shown, and as shown in the drawing, the unevenness of light irradiation to the regions R12 to R7 caused by the start of running of the lamp train 10 shown in FIG. However, it is understood that the time difference light irradiation for each region during the stop time at the end point position shown in FIG.

  In the region BR, the irradiation time line 700 has a sawtooth shape. This is the same as the line shown in FIG. 8. At the end point, each lamp faces the region BR of the tubular lining material 100. This is because the light receiving time is different between the left and right portions in each of the regions R7 to R12.

  In the present embodiment, after the end point of the lamp train 10 arrives, all the lamps are turned off in order during the time 6t. Therefore, the portion of the region BR of the tubular lining material 100 has a greater amount of sawtooth shape and light irradiation time than the normal region on the right side of the drawing. This is the same as the above-described control at the starting position of the lamp train 10, and it may be controlled so that all the lamps are turned off when the time 5t has elapsed. In this case, when the lamp train 10 arrives at the end point position, No. No. 6 lamp is extinguished and No. 6 is sequentially displayed every time 1t elapses. It will be turned off toward the 1 lamp.

  12 (A) and 12 (B) show another embodiment, which shows a method for controlling on / off of a plurality of lamps differently from the above-mentioned on / off control of each lamp. Yes. FIG. 2A shows an on (lighting) operation at the starting position of the lamp train 10, and two pieces are controlled as one group as shown in the figure.

  That is, no. No. 6 lamp and no. First, the lamp No. 5 was turned on (lighted), and when the time 2t passed, No. 4 lamp and No. 4 No. 3 lamp is turned on (lights up), and when the time 4t elapses, No. 2 lamp and No. 2 No. 1 lamp is on (lit).

  FIG. 5B shows an off (light-off) operation at the end point position of the lamp train 10, and two pieces are controlled as one group as shown in the figure. That is, when time 2t elapses after arrival at the end point, No. No. 6 lamp and no. The lamp of No. 5 is turned off (extinguished), and when the time 4t has elapsed, No. 5 is displayed. No. 4 lamp and No. 4 No. 3 lamp is turned off (extinguishes), and when time 6t elapses, No. 2 lamp and No. 2 No. 1 lamp is off (turned off).

  By controlling the lamps for each group in this way, the difference in the light irradiation time for each region R1 to R6 of the tubular lining material 100 at the starting position of the lamp train 10 shown in FIG. 3 is shown in FIG. It can be mitigated by the stepwise on operation shown. Further, the difference in the light irradiation time for the regions R1 to R6 of the tubular lining material 100 shown in FIG. 8 at the end position of the lamp train 10 can be reduced by the step-off operation shown in FIG. .

  That is, the total irradiation time for each of the regions R1 to R6 is the sum of the irradiation times shown in both figures, but the uniformity as the light irradiation time shown in FIG. 6 and FIG. The difference is eliminated. By controlling the lamps on and off for each group in this way, it is possible to make adjustments with a relatively rough on / off control, compared to the case where lamps are turned on and off step by step, thereby complicating the entire system. It can be avoided.

  In the above embodiment, the properties of the tubular lining material 100 to be used are not particularly limited and have been described by way of examples of widely having photocuring properties. However, the photocuring method according to the present invention is not limited to light. The present invention is suitably applicable to the tubular lining material 100 having both curing and thermosetting properties. That is, for the tubular lining material 100 having both light and heat curability, more accurate light irradiation is required from the curing process than the tubular lining material 100 having only one curing property. That is, the entire curing of the dual-curing type tubular lining material 100 is performed by light irradiation, but the process is firstly cured by the reaction of the photo-curing material, and occurs during this curing. The process heats the thermosetting material by the reaction heat.

  In such a bi-curing type tubular lining material 100, an excessive rise in temperature and a shortage of light irradiation greatly affect the quality after curing, so that the tubular lining material 100 of any one kind of thermosetting property is used. In this case, more uniform light irradiation is required. Therefore, by using the method according to the embodiment as described above, the amount of light irradiation in the end region of the tubular lining material 100 is controlled by the light emitting means individual control of the light irradiation device on the start side and the end point side of the tubular lining material 100. It is very beneficial that a homogenization of is achieved. Accordingly, the application of the light / heat curable tubular lining material 100 is further promoted.

  In addition, such a light- and heat-curable tubular lining material 100 is formed in a two-layer structure in which the light-curable tubular lining material 100 layer is the inside and the thermosetting tubular lining material 100 is the outside. It can be formed by including materials of both properties in one layer.

  Next, another embodiment for reducing the difference in light irradiation between the starting region and the ending region of the tubular lining material 100 will be described. First, the light irradiation in the starting region is relaxed by only one or two lamps on the rearmost side in the traveling direction of the lamp train 10 at the starting position where the travel movement of the lamp train 10 starts in the tubular lining material 100. Is turned on. In the partially lit state, the lamp train 10 is reciprocated in the traveling direction only within the distance of the entire length of the lamp train 10 from the starting position.

  This reciprocating step is performed a predetermined number of times, and ends with the moving distance being sequentially reduced for each reciprocating movement. More specifically, only the last one No. 6 is used, first, the first reciprocation is shown in FIG. This is done by turning back when the ramp No. 6 reaches the position of the region R1 (the position where the No. 1 ramp in FIG. 2 exists). Then, the second reciprocating movement is performed by turning back when the position of the region R2 (the position where the No. 2 ramp in FIG. 2 exists) is reached. In this way, the reciprocal movement is sequentially performed, and the reciprocation of the number of connected lamps minus one is performed. This makes it possible to reduce the difference in light irradiation time when moving the area AR with all the lamps shown in FIG. That is, by performing such a reciprocating movement, the amount of light irradiation can be sequentially increased from the region R1 to the region R6, so that the above-described relaxation is possible. When two lamps are turned on, the return point of the reciprocating movement also changes for each of the two areas, areas 6 and 5 and areas 4 and 3.

  Further, the light irradiation in the end point region is reduced at the end point position where the travel movement of the lamp train 10 in the tubular lining material 100 is completed, and only one or two lamps on the leading side in the traveling direction of the lamp train 10 are applied. Turn on the light. Then, the lamp train 10 is moved back and forth in the range of only the distance of the entire length of the lamp train 10 from the end point position in the partially lit state.

  This reciprocating step is performed a predetermined number of times, and ends with the moving distance being sequentially reduced for each reciprocating movement. More specifically, only the first No. In the case of using the ramp No. 1, first, the first reciprocation is shown in FIG. This is done by turning back when the ramp No. 6 reaches the position of the region R12 (the position where the No. 6 ramp in FIG. 7 exists). Then, the second reciprocating movement is performed by turning back when reaching the position of the region R11 (the position where the No. 5 ramp in FIG. 7 exists). In this way, the reciprocal movement is sequentially performed, and the reciprocation of the number of connected lamps minus one is performed. This makes it possible to reduce the difference in light irradiation time when moving the region BR with all the lamps turned on as shown in FIG. That is, by performing such reciprocating movement, the amount of light irradiation can be sequentially increased toward the regions R12 to R7, so that the above-described relaxation is possible. When two lamps are turned on, the return point of the reciprocating movement also changes for each of the two areas, areas 12 and 11 and areas 10 and 9.

  The present invention is not limited to the configuration according to each of the above embodiments, and various modifications are possible within the scope of the gist of the invention. For example, as the lamp constituting the lamp train 10, it is possible to use a lamp having a plurality of LEDs mounted on its surface, and this LED lamp is used to accurately cure both the light and heat type tubular lining material 100. In the situation, the photocuring method of the tubular lining material 100 according to the present invention can be suitably used.

  Furthermore, in the above embodiment, the operation of uniform light irradiation only at the start position and the end position of the lamp train 10 has been mainly described. However, according to the individual on / off control of the lamp according to the present invention, the tubular lining material 100 Even in the intermediate portion, more accurate photocuring can be performed by individually controlling each lamp of the lamp train 10 on and off. For example, when the tubular lining material 100 has a small tube diameter or thickness, it is possible to make fine adjustments such that every other lamp of the lamp train 10 is turned on or every other lamp is turned off. is there.

  In addition to the above embodiment, only the last lamp is turned on in addition to the above-described embodiment, and the difference in the light irradiation amount in the starting region of the tubular lining material 100 described above is turned toward the traveling direction on the starting side. It can also be achieved by performing reciprocating movement that accelerates and decelerates in the backward direction. Further, the light irradiation amount difference in the end point region of the tubular lining material 100 is reduced by turning on only the leading lamp, accelerating in the backward direction and decelerating in the traveling direction. It can also be achieved by moving.

It is explanatory drawing which shows the structure of a sewer main etc. to which the pipe line rehabilitation method concerning this invention is applied, and the installation state of a lamp train. It is explanatory drawing which shows the installation state of the lamp train in the starting position in a tubular lining material. It is a graph which shows the difference of the light irradiation time of the lamp train with respect to the area | region of the tubular lining material in an origin position. It is explanatory drawing which shows the step-on operation | movement of each lamp | ramp of a lamp train in a starting position. It is a graph which shows the light irradiation time with respect to each area | region of the tubular lining material by the lamp train at the time of a stop at a starting point position. It is a graph which shows the light irradiation time with respect to each area | region by the lamp train in the starting position by which the equalization was achieved by the photocuring method which concerns on embodiment. It is explanatory drawing which shows the installation state of the lamp train in the end point position in a tubular lining material. It is a graph which shows the difference of the light irradiation time of the lamp train with respect to the area | region of the tubular lining material in the stage which reached the end point position. It is explanatory drawing which shows the step-off operation | movement of each lamp | ramp of a lamp train in an end point position. It is a graph which shows the light irradiation time with respect to each area | region of the tubular lining material by the lamp train at the time of a stop in an end point position. It is a graph which shows the light irradiation time with respect to each area | region by the lamp train in the end point position by which the equalization was achieved by the photocuring method which concerns on embodiment. (A) and (B) relate to an embodiment in which control is performed by grouping the lamps, and the step-on operation of each lamp of the lamp train at the start position and the step-by-step of each lamp of the lamp train at the end position, respectively. It is explanatory drawing which shows OFF operation | movement.

Explanation of symbols

10 Lamp train 100 Tubular lining material 200 Sewer main 300, 400 Manhole AR Area of tubular lining material irradiated with light at the starting position of the BR train BR Area of tubular lining material irradiated with the lamp train at the end position R1-R12 Lamp train Areas of tubular lining material irradiated by each lamp

Claims (7)

A tubular lining material introduction step of drawing at least a photocurable uncured tubular lining material into an existing pipe to be rehabilitated, and expanding the tubular lining material along the inner wall of the existing pipe;
Within the introduced tubular lining material, a light irradiation device in which a plurality of light emitting means are connected in series is caused to travel, and light irradiation from the light irradiation device is switched on / off of each light emitting means for each light emitting means. A photo-curing step performed by light irradiation individual control individually controlled, and
A method for rehabilitating a pipeline. The tubular lining material is
The pipe rehabilitation method according to claim 1, wherein the pipe rehabilitation method has both photocuring and thermosetting properties. The light irradiation individual control is
Securing a stop state for a predetermined time before the traveling at the starting position where the light irradiation device starts traveling in the tubular lining material;
3. The lighting device according to claim 1, wherein the light emitting device is turned on at a predetermined time sequentially from the rear light emitting device toward the front light emitting device in the traveling direction of the light irradiation device in the stop state at the starting position. The pipeline rehabilitation method described in the paragraph. The light irradiation individual control is
Securing a stop state for a predetermined time after the traveling at the end point position where the traveling movement of the light irradiation device in the tubular lining material is completed,
4. The light emitting device according to claim 1, wherein the light emitting device is turned off at a predetermined time sequentially from the rear light emitting device toward the front light emitting device in the stop state at the end point position. The pipeline rehabilitation method described in the paragraph. The light irradiation individual control is
The light emitting means of the light irradiation device is divided into a plurality of light emitting means groups, and lighting and / or turning off at the predetermined time is performed for each group. The described pipeline rehabilitation method. The light irradiation individual control is
In the tubular lining material, at the starting position where the light irradiation device starts traveling, only one or a plurality of light emitting means on the rear side toward the traveling direction of the light irradiation device are turned on,
Including reciprocating within a range of only a distance corresponding to the total length of the light irradiation device from the starting position,
The pipe rehabilitation method according to claim 1, wherein the reciprocating step is performed a predetermined number of times, and the moving distance is sequentially shortened for each reciprocating movement to be finished. The light irradiation individual control is
At the end point position where the traveling movement of the light irradiation device in the tubular lining material ends, only one or a plurality of light emitting means on the leading side in the traveling direction of the light irradiation device are turned on,
Including reciprocating in the range of only the distance corresponding to the total length of the light irradiation device from the end point position to the rear,
8. The pipeline rehabilitation according to claim 1, wherein the reciprocating step is performed a predetermined number of times, and the moving distance is sequentially shortened for each reciprocating movement. Method.

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