JP2010074914A - Cable housing pipe repairing system, method thereof, pressuring tube in the repairing system and lining material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable housing pipe repairing method for repairing pipes by using a lining material while laying cables existing in a protective pipe of a predetermined pipe conduit. <P>SOLUTION: This cable housing pipe repairing method includes: a step of enclosing an existing cable 4 with a tubular protective material 30; a step of enclosing the existing cable 4 with the lining material 6 by a coupling means 9 for annularly coupling the lining material 6; a step of laying a pressurizing tube 31 having a plurality of flow paths between the existing cable 4 and the lining material 6; a step of pressuring the plurality of flow paths of the pressurizing tube 31 to bulge the tube, allowing the lining material 6 to abut on the inner surface of a protective pipe 2 and curing the lining material 6; a step of removing the pressurizing tube 31 after the predetermined time elapses; and a step of removing the tubular protective material 30 after removing the pressurizing tube 31. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cable-installed cable housing pipe repair system and method for repairing a pipe line in which a cable is laid, and a pressure tube and a lining material in the repair system.

  A cylindrical lining material is used to repair the inner surface of a protective pipe such as a steel pipe or the like buried in the underground. The cylindrical lining material is formed of a flexible material impregnated or coated with a thermosetting resin, a photocurable resin, or a room temperature curable resin. Such a cylindrical lining material is placed inside the pipe line in an uncured state, and then inflated with water pressure or air pressure and pressed against the inner surface of the pipe line.In this cylindrical lining material, hot hot water, By passing steam or irradiating ultraviolet rays, the curable resin of the cylindrical lining material is cured and lining is performed.

  On the other hand, if the existing cable is already installed in the pipeline, this cable will interfere with the repair of the pipeline, and removing the cable from the protective tube is an auxiliary route that can replace the cable in operation. The work efficiency is extremely poor.

  Therefore, in order to cope with this problem, a technique is disclosed that can repair a pipeline while the cable is laid even when the cable is laid in the pipeline ( (See Patent Documents 1 and 2).

  In these conventional techniques, an uncured lining sheet made of a sheet-like lining material and a single flexible tube are used. These prior arts are outlined with reference to FIGS. FIG. 19 is a longitudinal sectional view showing a process of drawing a lining sheet tube and a tube formed from a lining sheet into the protective tube from one opening to the other opening of the protective tube. FIG. 20 is a cross-sectional view showing a process of forming a lining sheet tube by connecting both sides of the lining sheet while wrapping the cable in the protective tube. FIG. 21 is a perspective view showing a process of forming a lining sheet tube by connecting both sides of a lining sheet while wrapping a cable in a protective tube. FIG. 22 is a cross-sectional view of the protective tube in a state where the tube is inflated with hot water and the lining sheet tube is in contact with the inner surface of the protective tube.

  As shown in FIGS. 19 to 22, in order to repair the inner surface of the protective pipe 2 such as a steel pipe of a pipe line buried in the underground 1, it is formed in a strip shape having a width corresponding to the inner diameter of the protective pipe 2. A roll stand 5 is prepared by winding the uncured flexible lining sheet 6 and rotatably supporting it as a sheet roll 7. The roll stand 5 can also be used as a flexible tube 19 formed in a strip shape having a width corresponding to the inner diameter of the protective tube 2 and rotatably supported.

  In these prior arts, first, in order to wrap the cable 4 with the lining sheet 6, the connecting members 9 a and 10 b provided on both sides of the lining sheet 6 are engaged with each other by connecting means 9 such as a fastener (slide connecting operation body) 8. The tow rope 11 is pulled while being connected. In this way, both ends in the width direction of the lining sheet are connected to each other at one opening side of the protective tube 2 (the insertion port 12 on the manhole 3a side) to form a tubular lining sheet tube 15, The lining sheet 6 is drawn from the other opening (drawing port 13 on the manhole 3b side) with the pulling rope 14, and the lining sheet 6 is arranged from one opening of the protective tube 2 to the other opening. Next, the tube 19 is inserted and pulled into the lining sheet 6 disposed in the protective tube 2 from one opening of the protective tube 2 to the other opening, and the tube 19 is inflated with hot water. The lining sheet 6 is brought into contact with the inner surface of the protective tube 2 and this state is maintained for a predetermined time to cure the lining sheet 6 to form a lining sheet tube 15 and to be fixed to the inner surface of the protective tube 2. Thereafter, the tube 19 is removed.

JP 2005-288786 A JP 2006-15704 A

  The above-described conventional technique is an extremely useful technique because the pipe line can be repaired with the cable still installed even when the cable is already installed inside the pipe line. However, in order to pull in the lining sheet or tube to such an extent that the existing cable is not damaged, it is required to insert with a limited traction force (for example, a traction force of less than 1000 N) to ensure a reliable construction. There is room for improvement.

  Moreover, in the above-mentioned prior art, a tube having a single flow path is used to press and fix the lining sheet, so that a portion for pressing the existing cable against the inner wall of the pipe is generated, the pressure is not uniformly applied, and the repair quality There is room for improvement.

  Furthermore, fasteners used for lining sheets, etc., may form discontinuous parts of the lining material that has a repair effect, and the repair strength may be reduced compared to other parts, improving the repair quality. There is room.

  In view of the above problems, an object of the present invention is to provide a cable housing pipe repair system and method with improved repair quality, and a pressure tube and a lining material in the repair system.

  The cable housing pipe repair system of the present invention is a cable housing pipe repair system that repairs a pipe line with a lining material in a state where an existing cable in a protective pipe of a predetermined pipe line is laid, and extends over the pipe line to be repaired. A tubular protective material for wrapping the existing cable, a lining material for wrapping the tubular protective material over the pipe line to be repaired, and the existing cable and the lining material between the pipe line to be repaired A pressure tube having a plurality of flow paths for laying, and the lining material in contact with an inner surface of the protective tube, and maintaining the contacted state for a predetermined time to cure the lining material. A pressurizing means for pressurizing a plurality of flow paths of the pressure tube in a hermetic or liquid-tight state equal to or higher than the curing condition of the lining material determined in a predetermined time; and after the predetermined time has elapsed, A tube removal means for removing over blanking, after removing the pressure tube, characterized in that it comprises a protective material removal means for removing said tubular protection member.

  The cable housing pipe repairing method of the present invention is a cable housing pipe repairing method for repairing a pipe line with a lining material in a state in which an existing cable in a protective pipe of a predetermined pipe line is laid. A step of wrapping the existing cable with a tubular protective material, a step of wrapping the existing cable with the lining material by a connecting means for connecting the lining material in a ring shape over the pipeline to be repaired, and a span of the pipeline to be repaired A step of laying a pressure tube having a plurality of flow paths between the existing cable and the lining material, and a hermetic pressure equal to or higher than a curing condition of the lining material, wherein the plurality of flow paths of the pressure tube are determined in a predetermined time. Alternatively, the lining material is inflated by pressurizing in a liquid-tight state, and the lining material is brought into contact with the inner surface of the protective tube, and the contacted state is maintained for a predetermined time to perform the lining. Curing the wood, after the predetermined time, and removing said pressurizing tube, after removing the pressure tube, characterized in that it comprises the step of removing said tubular protection member.

  Moreover, in the cable housing pipe repair method of the present invention, the step of removing the pressure tube further includes a step of removing each of the flow path tubes constituting the plurality of flow paths of the pressure tube one by one. And

  In the cable housing pipe repair method of the present invention, the step of removing the pressurizing tube may include the step of removing the airtight or liquid when each of the channel tubes constituting the plurality of channels of the pressurizing tube is removed one by one. The method further includes the step of removing each of the flow path tubes while being pressurized in a dense state.

  Further, in the cable housing pipe repair method of the present invention, the step of pressurizing and inflating the plurality of flow paths of the pressurizing tube in an airtight or liquid tight state equal to or higher than the curing condition of the lining material determined in a predetermined time is a single inlet. The method further includes the step of simultaneously pressurizing the plurality of flow paths with a cylindrical pressurizing jig having a multi-outlet structure.

  Furthermore, the pressurizing tube of the present invention is a pressurizing tube used in the cable housing pipe repairing method of the present invention, and the pressurizing tube includes a plurality of flow path tubes that constitute a plurality of flow paths, It consists of the adhesion part which can isolate | separate the road tube.

  In the pressurizing tube of the present invention, the length in the width direction perpendicular to the longitudinal direction of the pressurizing tube is 105% or more and 200% or less with respect to the inner peripheral length in which the lining material is annular. It is characterized by doing.

  Moreover, the pressurizing tube of the present invention is characterized in that the adhesive portion has a perforated structure made of the same material as each flow path tube.

  Moreover, the pressurization tube of this invention WHEREIN: The said adhesion part consists of adhesive tapes, It is characterized by the above-mentioned.

  Furthermore, the lining material of the present invention is a lining material used in the cable housing pipe repairing method of the present invention, and in the case where it is connected in an annular shape by the connecting means, an annular form in which the curing resin member of the lining material is continuous. As described above, an excess portion of the curing resin member is provided in advance on at least one side end of the lining material.

  Further, in the lining material of the present invention, when the ring is connected by the connecting means, the curable resin is provided on at least one side end of the lining material so that the curable resin member of the lining material has a continuous annular shape. A surplus portion of the member is provided in advance, and is constituted by a multilayer curing resin member that can be engaged with each other.

  Further, in the lining material of the present invention, when the ring is connected by the connecting means, the curable resin is provided on at least one side end of the lining material so that the curable resin member of the lining material has a continuous annular shape. A surplus portion of the member is provided in advance, and the annular curing resin member is configured to intersect each other.

  Moreover, the lining material of this invention WHEREIN: The surplus part in the said lining material has an adhesion part for adhere | attaching cyclically | annularly, It is characterized by the above-mentioned.

  According to the cable housing pipe repairing method of the present invention, even when a cable is already installed inside the pipe, the pipe can be repaired in a state where the cable is laid, and the existing cable is The construction time for repairing the cable housing pipe can be shortened while preventing damage. Moreover, even if there is a restriction on the pull-in tension without damaging the existing cable accommodated in the pipe and without reducing the function, the construction can be performed in the long-distance protection section that has been impossible until now.

  Further, according to the pressure tube according to the present invention, the cable is wrapped to prevent the cable from being pressed against the inner wall of the pipe, and a lining material made of a mature curable resin is pressed from the inner surface of the pipe to be molded and cured. At this time, even if a laid cable is present on the inner side of the lining material, it is possible to uniformly pressurize in the direction of the pipe circumferential surface, so that it is possible to avoid a lack of thickness and poor molding.

  Further, according to the pressurizing tube according to the present invention, it is possible to separate each of the plurality of parallel flow paths by making a cut such as a perforation at a place where the parallel flow paths and the flow paths are connected. It becomes possible, and a connection with a cylindrical jig becomes possible by the same method as the case of the tube comprised only with one flow path. Further, by making a cut along the entire length of the pressurized tube, it becomes possible to make the flow path independent at an arbitrary place, and it is possible to cope with various pipe lengths. Each channel can be connected to a hose that supplies pressurized water or the like through a cylindrical jig in a watertight manner, and water can be passed through each channel. A cut line such as a perforation is made at a location where the flow paths are connected to each other, and each flow path can be separated at an arbitrary location.

  Moreover, according to the pressurization tube by this invention, a tube can be set so that it may become a dimension more than an internal diameter in the pipe | tube peripheral surface direction, both shafts may be wrapped, and a laid cable can be wrapped reliably. Thereby, since the installed cable is wrapped in the tube, it can be uniformly pressurized. In addition, the pipe quality can be improved by setting the dimensions so that the pressure tube is always wrapped in the pipe circumferential surface direction.

  Moreover, according to the pressurizing tube according to the present invention, the cutting resistance of the perforation of the flow path connecting portion is reduced so that each flow path can be reversed and removed independently. Further, the inside of the flow path is pressurized with compressed air or the like at the time of removal, so that it is reliably reversed. Since the pressure tube can be removed, the construction time can be shortened. In addition, the pressure tube can be easily removed even in an environment where a laid cable exists. The cutting strength of the perforation etc. which connects a flow path and a flow path is set small. In addition, internal pressure is applied with compressed air or the like at the time of removal.

  Further, according to the lining material of the present invention, the base material impregnated with the resin is constituted by a plurality of inner and outer sheets, the discontinuous portions are shifted, and the base impregnated with the resin in the fastener portion. Since the material is wrapped and the thickness is secured from the general portion, the discontinuity between the lining materials can be eliminated or the strength can be enhanced.

  First, a cable housing pipe repair method for repairing a cable laid protective pipe according to an embodiment of the present invention will be described.

  The cable housing pipe repair method according to an embodiment of the present invention is the same as in the case of repairing a protective cable with a cable installed, which is the subject of the above-described prior art, even when a cable is installed inside the pipeline. This is a technique for repairing pipelines while cables are laid. Similar components will be described with the same reference symbols.

  That is, as schematically shown in FIG. 1, in order to repair the inner surface of a protective pipe 2 such as a steel pipe buried in the underground 1, a belt having a width corresponding to the inner diameter of the protective pipe 2. An uncured flexible lining sheet 6 is prepared and connected by a fastener (slide connection operation body) 8 provided on the lining sheet 6 so as to wrap the cable 4. Is inserted from the opening side (manhole 3a side), the pressurized state is maintained for a predetermined time, the lining sheet 6 is cured, and is fixed to the inner surface of the protective tube 2 to repair the pipeline. In the present embodiment, a sheet-like lining material is typically referred to as a lining sheet, but the lining material includes any flexible form.

  Hereinafter, a cable housing pipe repair method according to an embodiment of the present invention will be specifically described as Procedure 1 to Procedure 6.

(Procedure 1)
FIG. 2 shows a procedure 1 in the cable housing pipe repairing method according to the embodiment of the present invention. As shown in FIG. 2, the state before the repair is a state in which the protective tube 2 is vertically divided at predetermined intervals (for example, about 150 m) by manholes 3a and 3b in the basement 1 (hereinafter also referred to as a span). ). A cable 4 such as an optical fiber cable is laid in the protective tube 2. In particular, in such a protective tube 2, when it is desired to add a large number of cables in addition to one existing cable, for example, if the protective tube 2 is rusted or corroded, it may hinder multi-laying. Usually, it is inspected beforehand whether the protective tube 2 is corroded. The inspection technique is not the subject of the present invention and will not be described in detail, but it can be inspected by scanning a camera in the pipeline. The present invention does not necessarily require an in-pipe inspection.

(Procedure 2)
FIG. 3 shows a procedure 2 in the cable housing pipe repair method according to the embodiment of the present invention. As shown in FIG. 3, the cable 4 is wrapped with a tubular protective material 30 such as polyethylene over the entire span. The tubular protective material 30 has a structure having engagement sheets for engaging and connecting the sheets to each other on both sides of the sheet-like flexible protective material, and the width direction of the sheet-shaped protective material Both ends of each other can be connected to each other to form the tubular protective material 30. For example, the tubular protective material 30 is formed by connecting both ends of the sheet-shaped protective material in the width direction on one opening side (manhole 3a side) of the protective tube 2 and the other opening (manhole 3b). The tubular protective member 30 is drawn from a side) with a predetermined pulling rope (not shown), and is wrapped so as to cover the cable 4 from one opening of the protective tube 2 to the other opening.

(Procedure 3)
FIG. 4 shows a procedure 3 in the cable housing pipe repair method according to the embodiment of the present invention. In step 3, the pressurizing tube 31 and the lining sheet 6 are separately provided, or alternatively, the pressurizing tube 31 and the lining sheet 6 are placed in the protective tube 2 from one opening to the other opening of the protective tube 2 at the same time. To be placed. The lining sheet 6 has, for example, a flexible three-layer structure of an impermeable inner film layer, a resin adsorbing inner layer impregnated with a curable resin, and an impermeable outer film layer. Examples of the curable resin include a thermosetting resin, a photocurable resin, and a room temperature curable resin, which are impregnated with felt to form a resin-absorbing inner layer. In addition, a polyurethane film is used as the impermeable inner film layer and a polyethylene film is used as the impermeable outer film layer, but the present invention is not limited to this. Further, the pressurizing tube 31 may be a flexible material formed of an airtight or liquid tight material, and is not particularly limited to the above-described material. Unlike a tube having a tube structure having two flow paths in which both ends in the width direction of the two tubes are connected to each other, when the tube is inflated, the entire inner peripheral surface of the protective tube 2 has two flow paths. It has a diameter that is pressed by the road.

  As shown in FIG. 4, a lining material storage box 5a for storing the lining sheet 6 by refrigeration on the ground surface is prepared. The lining sheet 6 made of a thermosetting resin typically has a property of curing in about 3 to 4 hours with heat at 60 ° C. and curing in about 1 hour with heat at 80 ° C. Therefore, the lining material storage box 5a for storing the lining sheet 6 in a refrigerated state is preferably kept at a relatively low temperature (preferably, for example, −5 ° C. or lower). The lining material storage box 5a includes a roll stand 5 that rotatably supports a sheet roll on which a lining sheet 6 formed in a strip shape having a width corresponding to the inner diameter of the protective tube 2 is wound. It may be. Moreover, this roll stand 5 may be used not only for winding the lining sheet 6 but also for winding the pressure tube 31 in a multiplexed manner. Alternatively, it goes without saying that a roll stand for the pressurizing tube 31 may be provided.

  Further, both sides in the width direction of the lining sheet 6 are connected to each other by a connecting means 9 so as to be formed into a tubular shape. As the connecting means 9, a connecting tool such as a fastener or a double-sided adhesive tape is provided on both sides of the lining sheet 6, or adhesive bonding or heat fusion, sewing, or locking with a hook or hook is used. Or a composite structure of these. In addition, it is preferable to connect the both sides in the width direction of the lining sheet 6 so that it can be continuously connected in consideration of the quality after connection, as will be described later.

  Fasteners that are engaged and connected by connectors 10a and 10b provided on both sides of the lining sheet 6 on one opening side (manhole 3a side) of the protective tube 2 (although not limited, preferably a surface fastener) ) The connecting means 9 such as 8 is connected to both ends in the width direction of the lining sheet by the pull-in guides 39 for fitting the fasteners, and the traction rope 32 is connected by the traction machine 38 from the other opening (manhole 3b side). By pulling through the reels 34a and 34b, the lining sheet 6 is drawn, and the lining sheet tube is arranged from one opening of the protective tube 2 to the other opening. On the other hand, the pressure tube 31 is inserted into the lining sheet 6 disposed in the protective tube 2 from one opening to the other opening of the protective tube 2 so as to be laid under the cable 4.

  In order to pull the pressure tube 31 and the lining sheet 6 separately from each other, or at the same time, from the one opening of the protective tube 2, the pressure tube 31 and / or the lining sheet 6 are separated. However, it may be configured to pull using a non-rotating traction jig that directly fixes the tip of the pressure tube 31 and / or the lining sheet 6 directly with the traction rope 11 as in the conventional case. It is preferable to connect two separate rotating traction jigs 33 having independent rotating structures configured so that the rotation at the time of towing is not transmitted to the pressure tube 31 and / or the lining sheet 6. This separation rotation type traction jig 33 may be configured to rotatably connect a jig for fixing the lining sheet 6 side and a jig for fixing the traction side. The tow rope 32 and the lining sheet 6 are connected to each other in an independently rotating manner by a binding band, a screw or the like while the cable 4 is passed inside. The front end of the lining sheet 6 is fitted and fixed to the outer periphery of the rear end of the separation rotary traction jig 33. One end of the pulling rope 32 is connected to the tip of the separation rotary pulling jig 33. The tow rope 32 is passed through the protective tube 2 and its tip is pulled by the next manhole 3b. The separation rotary pulling jig 33 can be used to pull the pressure tube 31 and the lining sheet 6 separately. However, both the pressure tube 31 and the lining sheet 6 are fixed and pulled simultaneously. It can also be used.

  Although not shown in FIG. 4, as a pulling method in the case of construction using the conventional one-flow-path tube 19, the one-flow-path tube 19 can be pressure-inserted after the lining sheet 6 is inserted. . In this case, when drawing the tube 19 of one flow path into the annular lining sheet 6, the front end of the tube 19 of one flow path is closed and the opening of the rear end is fixed to one opening of the protective tube 2. Air is fed into the one-flow tube 19 and the tip of the one-flow tube 19 is moved forward while moving forward to the other opening side of the protective tube 2, so that the one-flow tube 19 is inserted into the annular lining sheet 6. To pull in. However, when the lining sheet 6 is inserted after using the pressure tube 31 having two flow paths, the effect of the insertion external pressure can be reduced. It is preferable to construct using the tool 33.

  Thus, one side of the protective tube 2 opened to the manhole 3a by pulling the tow rope 32 from the manhole 3b side while arranging the pressure tube 31 on the cable 4 and forming the annular lining sheet 6. The pressurizing tube 31 and the annular lining sheet 6 are installed from the other opening to the other opening that opens to the manhole 3b.

  At this time, in order to facilitate the movement of the pressurizing tube 31 and the annular lining sheet 6 in the protective tube 2, a lubricant or water may be used.

  Next, after the lining sheet 6 and the tube 19 are installed, the separation rotary traction jig 33 is removed.

(Procedure 4)
FIG. 5 shows a procedure 4 in the cable housing pipe repair method according to the embodiment of the present invention. In step 4, the uncured lining sheet 6 which is not in contact with the inner surface of the protective tube 2 and is in a bent state is fed hot air, high-temperature hot water or steam into the two flow paths of the pressure tube 31, The lining sheet 6 is pressurized and brought into contact with the inner surface of the protective tube 2, and this state is maintained for a predetermined time (for example, 3 to 4 hours at 60 ° C. warm water), the lining sheet 6 is cured, and the lining sheet A tube 15 is formed.

  In order to send hot air, high-temperature hot water or steam into the two flow paths of the pressure tube 31, one is opened at both ends of the inlet and outlet of the pressure tube 31 having two flow paths on the manholes 3 a and 3 b side. A cylindrical plug plug 40 with the other closed is attached.

  The plug plug 40 on the entrance side has a fluid circulation device 35b for attaching a hose from the boiler 35 for sending hot air, hot hot water or steam to the cylinder wall. The stopper plug 40 is preferably formed with a groove in the longitudinal (axial) direction of the cylindrical wall so that the pressurizing tube 31 is fitted thereto. 31 is fixed. In addition, the plug plug 40 on the entrance side is attached with a hose 37 from an adjustment valve 36 for adjusting the amount of hot water, and the pressure is controlled by adjusting the amount of hot air, high-temperature hot water or steam flowing through the two flow paths. Is preferred.

  Thus, after plug plugs 40 are attached to both ends of the pressurizing tube 31 on the manholes 3a, 3b side, hot water is fed from the boiler 35, the pressurizing tube 31 is inflated, and the annular lining sheet 6 is attached to the protective tube 2. Adhere to the inner surface.

  When the curable resin impregnated or applied to the lining sheet 6 is a thermosetting resin, hot air, high-temperature hot water or steam is sent into the pressurizing tube 31, and the curable resin is photocurable. In the case of resin, ultraviolet rays are irradiated from the fluid circulation device 35b. When the curable resin is a room temperature curable resin, the resin is left for a certain period of time to cure the uncured thermosetting resin of the lining sheet 6. In this way, the inner surface of the protective tube 2 can be fixed.

(Procedure 5)
FIG. 6 shows a procedure 5 in the cable housing pipe repair method according to the embodiment of the present invention. In step 5, after the lining sheet 6 is cured and the formation of the lining sheet tube 15 is completed, the pressurizing tube 31 is removed. The above-described roll stand can be used to remove the pressurizing tube 31. However, when the pressurizing tube 31 is removed in order to make it easy to peel off the fixed lining sheet tube 15 and maintain high quality. A preferred example will be described later.

(Procedure 6)
FIG. 7 shows a procedure 6 in the cable housing pipe repair method according to the embodiment of the present invention. In step 6, the tubular protective material 30 is removed using the roll stand described above. As a result, after repairing the cable housing pipe, it is possible to lay the inner pipe or the like in the marginal space in the protective pipe 2 and lay the second cable.

  Such a procedure makes it possible to repair the protective tube 2 in which the cable 4 is laid, with higher quality. In particular, since the cured lining material has the performance as a self-supporting pipe, the function as the pipe can be maintained even if the existing pipe is further corroded.

  Next, the structure of the pressurizing tube 31 will be described in detail.

(Pressurized tube)
When pressure is applied using a conventional tube 19 consisting of a single flow path and the lining sheet tube 15 is formed in the protective tube 2, the configuration shown in FIG. (Omitted). In this case, since the tube 19 is pressed against the protective tube 2 without wrapping the cable 4, as shown in FIG. 8B, the lining material fixed in the vicinity of the cable 4 causes a “resin pool”. Such a “resin reservoir” is not preferable from the viewpoint of not damaging the cable 4, and since a smooth finish is preferable in terms of quality, there is room for improvement in the conventional tube structure.

  Therefore, the pressure tube 31 has a tube structure in which two flow paths are arranged and bonded in parallel. As shown in FIG. 9B, the pressurizing tube 31 includes a first tube 31a and a second tube 31b, and the first tube 31a and the second tube 31b are bonded together by an adhesive portion 31c. In this case, since the pressurizing tube 31 functions to wrap the cable 4, as shown in FIG. 9A, “resin pool” does not occur in the vicinity of the cable 4. As a result, the cable 4 can be prevented from being pressed against the inner wall of the pipe, can be uniformly pressurized in the pipe circumferential surface direction, and a smooth finish of the lining material can be obtained. Furthermore, since the pressure can be uniformly applied in the direction of the pipe circumferential surface, it is possible to avoid insufficient thickness and molding defects. By configuring the tube with a plurality of flow paths, it is possible to wrap the cable with the pressure tubes when the pressurized water is passed through each flow path and extended. The pressurizing tube 31 may have a structure in which a larger number of tubes are bonded.

Further, since the pressurizing tube 31 needs to securely wrap the cable 4, for example, as shown in FIG. 10 (a), the width direction (long) is shorter than the inner circumferential length of the lining sheet 6 that is annular. When the pressurizing tube 31 is pressurized, the cable 4 is not wrapped by the pressurizing tube 31 and moves to the outside of the pressurizing tube 31 to form a “resin pool”. Can occur. Therefore, as shown in FIG. 10B, the length in the width direction of the pressurizing tube 31 is 105% or more and 200% or less (practically 150% or less) with respect to the inner peripheral length of the lining sheet 6 that is annular. ) Is preferred. In this case, as shown in FIG. 10 (c), even if the excess ridges 31 a ₁ and 31 b ₁ are formed when the pressurizing tube 31 is pressurized, no “resin pool” occurs, and the cable housing pipe repair quality Can be improved reliably.

  Further, as shown in FIG. 11 (a), a plug plug 40 of an ordinary cylindrical fixture for fixing a tube used in the prior art also fixes a tip portion of the tube 31a with a dedicated hose band, and further a hose. 37b is partially covered and used with two dedicated hose bands. However, when such a plug plug 40 is used in each of the pressure tubes 31 having two flow paths, it is not easy to keep the two continuous thin flow paths uniformly in a confidential state (FIG. 11). (See (b)). Therefore, as shown in FIG. 12, the tip of the pressurizing tube 31 is divided into two, and the plug plug 40 fixed to each tube can be pressurized from one flow path. A cylindrical pressurizing jig 41 having a structure is used. The pressurizing jig 41 includes a pressurizing inlet 41c, a first channel pipe 41a, and a second channel pipe 41b. The airtight or liquid-tight state from the pressurizing inlet 41c is the first channel. There is a confidential state in which the pipe 41a goes to the first tube 31a and goes out to the outlet side plug plug 42a, and a secret state that goes from the second flow path pipe 41b to the second tube 31b and goes out to the outlet side plug plug 42b. It can be made uniform. The pressurizing tube 31 can be constituted by adhering a number of tubes. In general, the pressurizing tube 31 is a cylindrical pressurizing treatment having a “single inlet-multiple outlet” structure that assists in pressurizing two or more outlets from one inlet. The tool 41 is used.

Furthermore, in order that the tip of the pressurizing tube 31 can be easily separated into two, the connecting portion 31c of the pressure tube 31, a perforation portion 31c ₁ as a separating force of suitable strength for manual separation or (see FIG. 13 (a)), or polypropylene (PP) or an adhesive tape 31c _2, such as (see FIG. 13 (b)), or the adhesive force suitable for two tubes to adhere fixed An arbitrary adhesive member that has and can be separated into two parts is used. In this way, the tip of the pressure tube 31 can be separated into a Y shape at an arbitrary location. Adhesive force of the adhesive tape 31c ₂ is to use a thing 3~20N / cm.

  Further, when the pressure tube 31 is removed after the lining sheet tube 15 has been cured, the pressure tube 31 is conventionally pressurized and then peeled off by reverse inversion stripping (19) (FIG. 14 ( (See a)) When the strips of the pressure tubes 31 having two flow paths are stripped one by one, the area touching the lining material is large and the stripping strength is relatively strong. 14 (b)), the area touching the lining material is small, it can be peeled off with a relatively weak peeling strength, and the construction efficiency is improved.

  Further, in order to increase the efficiency of removing the pressurizing tube 31, when the pressurizing tube 31 is removed after the lining sheet tube 15 is cured, if one tube is pressurized and then reversely peeled off, In some cases, wrinkles may occur (see FIG. 15A), and a large peel strength corresponding to the generation of the wrinkles is required. In order to solve this, reverse inversion peeling is performed while pressing one tube (see FIG. 15B). Thereby, it becomes difficult to produce the wrinkle at the time of reverse inversion peeling, and construction efficiency improves more.

  Next, the structure of the lining sheet 6 will be described in detail.

(Lining sheet)
In the lining sheet 6 of the prior art referred to in FIG. 21, the connecting means 9 such as the fastener 8 engaged and connected by the connectors 10 a and 10 b provided on both sides of the lining sheet 6 is pulled by the pulling rope 11. It was used (see FIG. 16 (a)). For example, it is assumed that the connectors 10a and 10b have a width b with respect to the width a of the lining resin portion of the lining sheet 6. In this case, as shown in FIG. 16B, the width b of the connectors 10a and 10b has a portion where the lining resin portion becomes discontinuous when the fastener 8 is connected. When the lining resin portion is cured in such a structure, the strength as a tubular body may be insufficient even if continuity can be maintained after the thermal curing.

  Therefore, in the lining sheet 6 according to the present embodiment, the connector 10a provided on one side is provided at a predetermined distance from the side edge of the lining sheet 6 and the connector 10b provided on the other side. (See FIG. 17A). For example, with respect to the width a of the lining resin portion 6b at the center of the lining sheet 6, the connectors 10a and 10b have a width b, and further, the lining resin portion on one end side of the lining sheet 6 (that is, an excessive curing resin portion) ) Having a width c of 6a. In this case, as shown in FIG. 17B, the width b of the connectors 10a and 10b does not generate a discontinuous portion due to the presence of the lining resin portion 6a when the fastener 8 is connected. When the lining resin portion is cured with such a structure, the strength as a tubular body can be increased after the thermal curing.

Various examples of the lining sheet 6 that maintains the continuity of such a lining resin portion can be considered. For example, as shown in FIG. 18A, a lining sheet 6 in which a plurality of lining sheets are formed in multiple layers. constitute, in the connected state of the fastener 8, so that the end portion 6a ₁ of the lining sheet 6 which is a multilayer meshed with each other. This is a structure that does not wrap the film covering the lining material having a plurality of sheets. Alternatively, as shown in FIG. 18B, in the state where the lining sheet 6 in which a plurality of lining sheets are multilayered and the two fasteners 8 are connected, the end portions 6a ₁ of the multilayered lining sheet 6 are mutually connected. Engage with each other. Or in the state which connected the fastener 8 in the lining sheet 6 to the cyclic | annular inner side as shown in FIG.18 (c), the part which becomes discontinuous by the presence of the lining resin part 6a of the lining sheet 6 does not arise. In this case, as shown in FIG. 18 (d), in a state where the fastener 8 in the lining sheet 6 is connected to the inside of the ring, an adhesive portion 43 for bonding the lining resin portion 6a of the lining sheet 6 is provided. Even when there are irregularities, the annular shape can be reliably maintained and inserted or held without being affected by the irregularities. 18 (c) or 18 (d) shows a state in which one layer of the lining sheet 6 is formed into an annular shape, but this is made into a multilayer, and two fastener portions are formed as shown in FIG. 18 (b). It can be configured to stagger. Therefore, in addition to the examples, various modes composed of the above combinations are conceivable.

Also shows the tubular protective member 30, the pressure tube 31, and the adhesive tape 31c ₂ Representative materials and features listed in Table 1.

  Thus, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. Accordingly, the invention is not limited by the embodiments described above, but only by the claims.

  According to the present invention, it is possible to repair the inner surface of a protective pipe such as a steel pipe of a pipe line that is embedded in the underground efficiently while laying an existing cable, which is useful for repairing a cable housing pipe.

It is a figure which shows the cable accommodating pipe repair method of one Example by this invention. It is a figure which shows the procedure 1 in the cable accommodation pipe repair method of one Example by this invention. It is a figure which shows the procedure 2 in the cable accommodation pipe repair method of one Example by this invention. It is a figure which shows the procedure 3 in the cable accommodation pipe repair method of one Example by this invention. It is a figure which shows the procedure 4 in the cable accommodation pipe repair method of one Example by this invention. It is a figure which shows the procedure 5 in the cable accommodation pipe repair method of one Example by this invention. It is a figure which shows the procedure 6 in the cable accommodation pipe repair method of one Example by this invention. It is a figure explaining the case where the protection pipe is repaired using the tube which consists of the conventional one flow path. It is a figure explaining the case where a protective pipe is repaired using the tube which consists of two flow paths of one Example by this invention. It is a figure explaining the example at the time of repairing a protective tube using the tube which consists of two flow paths of one Example by this invention. It is a figure explaining the pressurization method of the tube which consists of two flow paths of one Example by this invention. It is a figure explaining the pressurization method of the tube which consists of two flow paths of one Example by this invention. It is a figure explaining the isolation | separation method of the tube which consists of two flow paths of one Example by this invention. It is a figure explaining the reverse reverse peeling method of the tube which consists of two flow paths of one Example by this invention. It is a figure explaining the reverse reverse peeling method of the tube which consists of two flow paths of one Example by this invention. It is a figure explaining the structure of the conventional lining sheet. It is a figure explaining the structure of the lining sheet of one Example by this invention. It is a figure explaining the structure of the lining sheet of one Example by this invention. It is a longitudinal cross-sectional view which shows the process of the conventional cable accommodation pipe repair method. It is a cross-sectional view which shows the process of the conventional cable accommodation pipe repair method. It is a perspective view which shows the process of the conventional cable accommodation pipe repair method. It is sectional drawing of the protective tube in the process of the conventional cable accommodation pipe repair method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Basement 2 Protective tube 3a, 3b Manhole 4 Cable 5 Roll stand 5a Lining material storage box 6 Lining sheet 6a Lining sheet lining resin part 6a ₁ Lining sheet end 8 Fastener (slide connection operation body)
9 connecting means 10a, 10b connector 12 insertion port 13 outlet 14 tow rope 15 lining sheet tube 19 tube 30 tubular protective material 31 pressure tube 31a first tube 31b second tube 31c ₁ perforation portion 31c ₂ adhesive tape 32 Pulling rope 33 Separating rotary pulling jigs 34a, 34b Reel 35 Boiler 35b Fluid flow device 36 Adjusting valve 37 Hose 38 Pulling machine 39 Pull-in guide 40 Plug plug 41 Pressurizing jig 42a Outlet side plug plug 43 Adhesive part

Claims (13)

A cable housing pipe repair system for repairing a pipe line with a lining material in a state where an existing cable in a protective pipe of a predetermined pipe line is laid.
A tubular protective material for wrapping the existing cable across the pipeline to be repaired;
A lining material for wrapping the tubular protective material over the pipeline to be repaired;
A pressure tube having a plurality of flow paths for laying between the existing cable and the lining material over the pipe line to be repaired;
The lining material, wherein the lining material is abutted against the inner surface of the protective tube, and a plurality of flow paths of the pressure tube are set in a predetermined time for maintaining the abutted state for a predetermined time and curing the lining material. Pressurizing means for pressurizing in an airtight or liquid tight state above the curing conditions of
A tube removing means for removing the pressure tube after the predetermined time has elapsed;
Protective material removing means for removing the tubular protective material after removing the pressure tube;
A cable housing pipe repair system comprising: A cable housing pipe repairing method for repairing a pipe line with a lining material in a state where an existing cable in a protective pipe of a predetermined pipe line is laid.
Wrapping the existing cable with a tubular protective material over the pipeline to be repaired;
Wrapping the existing cable with the lining material by connecting means for connecting the lining material in a ring shape over the pipeline to be repaired;
Laying a pressure tube having a plurality of flow paths across the pipeline to be repaired between the existing cable and the lining material;
The plurality of flow paths of the pressurizing tube are inflated by pressurization in an airtight or liquid tight state that exceeds the curing condition of the lining material determined in a predetermined time, and the lining material is brought into contact with the inner surface of the protective tube, and this contact Maintaining the state for a predetermined time to cure the lining material;
Removing the pressure tube after elapse of the predetermined time; and
Removing the tubular guard after removing the pressure tube;
A method for repairing a cable housing pipe, comprising:   The cable receiving tube according to claim 2, wherein the step of removing the pressurizing tube further includes a step of removing each of the flow path tubes constituting a plurality of flow paths of the pressurizing tube one by one. Repair method.   The step of removing the pressure tube includes removing each of the flow path tubes while applying pressure in the airtight or liquid tight state when removing each of the flow path tubes constituting the plurality of flow paths of the pressure tube. The method for repairing a cable housing pipe according to claim 3, further comprising a removing step.   The step of pressurizing and inflating the plurality of flow paths of the pressurizing tube in an airtight or liquid tight state that exceeds the curing condition of the lining material determined in a predetermined time is a cylindrical pressurization treatment with a single inlet-multiple outlet structure. The method of repairing a cable housing pipe according to any one of claims 2 to 4, further comprising a step of simultaneously pressurizing a plurality of flow paths with a tool. A pressure tube used in the cable housing pipe repair method according to any one of claims 2 to 5,
The pressurizing tube is composed of each flow path tube constituting a plurality of flow paths, and an adhesive part capable of separating each flow path tube.   The length in the width direction perpendicular to the longitudinal direction of the pressurizing tube is set to 105% or more and 200% or less with respect to the inner peripheral length of the lining material formed into an annular shape. The pressurizing tube according to 1.   The pressurizing tube according to claim 7, wherein the adhesive portion has a perforated structure made of the same material as each of the flow path tubes.   The pressure tube according to claim 7, wherein the adhesive portion is made of an adhesive tape.   A lining material used in the cable housing pipe repair method according to any one of claims 2 to 5, wherein when the connection means is connected in a ring shape, the curing resin member of the lining material is a continuous ring shape. A lining material, wherein an excess portion of a curing resin member is provided in advance on at least one side end of the lining material so as to be in a form.   When the lining material is annularly connected by the connecting means, an excess portion of the curing resin member is provided at least at one side end of the lining material so that the curing resin member of the lining material has a continuous annular shape. The lining material according to claim 10, wherein the lining material is formed of a multilayer curing resin member that is provided in advance and is capable of meshing with each other.   When the lining material is annularly connected by the connecting means, an excess portion of the curing resin member is provided at least at one side end of the lining material so that the curing resin member of the lining material has a continuous annular shape. The lining material according to claim 10, wherein the lining material is provided in advance and is configured such that the annular curing resin members intersect each other.   The lining material according to any one of claims 10 to 12, wherein the surplus portion of the lining material has an adhesive portion for adhering in an annular shape.

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