JP2013050203A - Method for regeneration of existing pipeline - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and quickly regenerate an existing old pipeline, when regenerating the pipeline by laying a new pipe to a main pipe connected with an attachment pipe, by installing a connection pipe for connecting the pipe with the attachment pipe with high reliability.SOLUTION: A regeneration method includes: a step of attaching a holder 5 to the connection port of the attachment pipe 2 being on the way of the main pipe 1; a step of drilling an attachment hole 10 of the connection pipe 7 to the pipe 100; a step of performing the alignment with the attachment pipe 2 by transporting the pipe 100 into the main pipe 1; a step of arranging the connection pipe 7 between the pipe 100 and the attachment pipe 2 by inserting and holding the connection pipe 7 in the sleeve 51 of the holder 5; a step of integration by filling a bonding agent into a clearance portion between the holder 5 and the connection pipe 7, and a connecting portion between the connection pipe 7 and the pipe 100; and a step of applying a sealing treatment to the bonding part between the holder 5 and the connection pipe 7.

Description

  The present invention relates to a method for rehabilitating an existing pipe line having a main pipe and a mounting pipe connected to the main pipe.

  When existing pipelines such as water and sewage pipelines and agricultural water pipelines become obsolete, new pipes are inserted into the existing pipelines sequentially and connected to form a new pipeline inside the existing pipeline It is widely practiced to repair and rehabilitate existing pipelines by (lift-in method).

  In this type of rehabilitation method, for example, as disclosed in Patent Document 1, vertical shafts are respectively provided upstream and downstream of a repair target portion of an existing pipeline, and a new pipe is installed from either of the vertical shafts. Suspend sequentially. Next, after the pipe body is lifted by the jack of the transport carriage installed in the shaft, the pipe body is transported into the existing pipe line by using a battery car for transporting the pipe or the like. At the transport destination, by joining the inlet of another pipe to the receptacle of the pipe, and repeating this joining work in sequence, a plurality of pipes are connected over the entire section of the start side shaft and the arrival side shaft, A rehabilitation pipe will be constructed in the existing pipeline. Finally, the gap between the existing pipe line and the rehabilitated pipe is filled with a backfilling material such as mortar, and the rehabilitated pipe is integrally fixed to the existing pipe line.

  A so-called cage-type transport cart is widely used as the transport cart. This type of carriage includes a support base disposed inside a new tube, a holding member that is provided on the support base and holds the upper part of the inner surface of the pipe, and wheels for moving the support base. Configured.

  In addition, as disclosed in Patent Documents 2 and 3, a traveling wheel is provided on a new tubular body, or the tubular body is transported in a state where the tubular body is floated on an existing pipeline, without using the transport carriage. A method of laying a pipe body has also been proposed.

JP 2007-255657 A JP 2011-12742 A JP 2007-285317 A

  When the existing pipeline as described above is an urban basin sewer, the pipeline includes a main pipe buried in the ground and a mounting pipe connected to the main pipe from a drainage facility such as each household. It is configured. If the main pipe of such an existing pipe line becomes obsolete, there is a possibility of causing problems such as water leakage and water ingress.Therefore, in addition to repairing the main pipe according to the degree of aging, the main pipe and the mounting pipe In some cases, it was necessary to repair the connecting part of the unit.

  In such a case, a new pipe is carried into the main pipe of the existing pipe line. Thereafter, a new connection pipe is provided at a connection portion between the attachment pipe and the pipe body. That is, for example, a connection portion with a mounting pipe is cut from the inside of the new pipe, one end of the new connection pipe is inserted into the existing mounting pipe, and the other end is attached to the new pipe. In general, the pipe body and the attachment pipe are connected to each other. However, the connection part between the existing main pipe and the mounting pipe may be aged or damaged in the same way as the main pipe, and it is difficult to attach the new connection pipe to the deteriorated main pipe. There was sometimes. Even if a new connection pipe can be installed, a minute crack has occurred in the connection part of the attachment pipe, and water leaks from the cracked part into the existing main pipe. However, there is a possibility that a trouble may occur that it cannot flow into the new tube.

  Therefore, the present invention has been made in view of the above problems, and the object of the present invention is to reconstruct a new pipe body in an existing pipe line provided with a mounting pipe. An existing pipe that uses a connecting pipe that connects the pipe body and the mounting pipe, installs the connecting pipe with high reliability, and allows the existing pipes that have deteriorated to be rehabilitated quickly and efficiently. It is to provide a rehabilitation method.

  In order to achieve the above-mentioned object, the solution means of the present invention is an existing pipe in which a plurality of new pipes are laid and rehabilitated on an existing pipe line having a main pipe and a mounting pipe connected to the main pipe. The road rehabilitation method is assumed. For this existing pipe rehabilitation method, there is provided a holder having a cylindrical sleeve part and a flange part formed at one end of the sleeve part at the connection port of the attachment pipe in the middle of the main pipe line. A step of attaching the sleeve portion to the inner surface of the main pipe so as to project into the main pipe, and determining a mounting position of the connecting pipe and the pipe connecting the pipe and the mounting pipe, Drilling a mounting hole for a connecting pipe in the pipe, transporting the pipe into the main pipe, aligning the holder with the mounting hole of the pipe, and a sleeve portion of the holder Inserting and holding the connecting pipe, disposing the connecting pipe between the pipe body and the mounting pipe via the holding tool, a gap between the holding tool and the connecting pipe, and the connecting pipe Filling the connecting portion of the tube with a bonding agent and integrating them, and sealing the bonding portion of the holder and the connecting tube And let me and a step of performing.

  Due to such specific matters, the periphery of the connection port of the mounting pipe that opens to the main pipe of the existing pipeline is covered by the flange portion of the holder, and the vicinity of the connection port of the mounting pipe is deteriorated or damaged. However, it is possible to install the connecting pipe with a simple operation. In addition, the newly provided connecting pipe is stably held by the holder, and after the filling of the bonding agent and the sealing process, the attachment pipe and the pipe body are in a highly reliable state with no risk of water leakage. It will be the connection between them. Therefore, the existing pipeline can be renovated efficiently and quickly, and repair with excellent reliability can be performed.

  The following is mentioned as a more concrete structure in the rehabilitation method of the said existing pipe line. In other words, the connecting pipe has an inner diameter substantially equal to the attachment pipe to be connected, and the holder has a configuration in which the inner diameter of the sleeve portion is equal to or larger than the outer diameter of the connecting pipe. Good.

  As a result, the connecting pipe can be stably attached to the holder mounted on the inner surface of the main pipe, and the mounting pipe and the connecting pipe can be intimately joined to enhance the water-stopping effect. The entire flowing water from the pipe can be smoothly led to the new pipe.

  Further, as a method for rehabilitating the existing pipe line, the connection pipe has a pipe length longer than the distance between the pipe body and the attachment pipe, and one end of the connection pipe is applied to the connection port of the attachment pipe. After connecting the connecting pipe via the holder, after cutting off the surplus length of the other end of the connecting pipe protruding to the inside of the pipe, the pipe and the connecting pipe The structure which joins and integrates may be sufficient.

  As a result, new pipes and connection pipes carried into the main pipe can be accurately joined according to the situation at the construction site, work efficiency can be improved, and existing pipes can be renewed quickly. It becomes possible.

  In the present invention, a holder having a cylindrical sleeve portion and a flange portion formed at one end portion of the sleeve portion is provided at the connection port of the attachment pipe in the middle of the main pipe, and the sleeve portion is connected to the main tube. A step of mounting on the inner surface of the main pipe so as to protrude into the pipe, a connection pipe connecting the pipe body and the mounting pipe, and a mounting position of the pipe body are determined, and the connection pipe is connected to the pipe body. A step of drilling a mounting hole, a step of transporting the tube body into the main pipe and aligning the holder with the mounting hole of the tube body, and inserting the connecting pipe into a sleeve portion of the holder And a step of disposing a connection pipe between the pipe body and the attachment pipe via the holder, a gap portion between the holder and the connection pipe, and a connection portion between the connection pipe and the pipe body And a step of filling and integrating the bonding agent, and a step of performing a sealing process on the bonding portion between the holder and the connecting pipe. There. For this reason, the pipe body and the attachment pipe can be connected with high reliability, and the flowing water from the attachment pipe can be smoothly guided to the new pipe body, and the old pipe line is aged. On the other hand, it is possible to proceed with the rehabilitation work efficiently and quickly.

It is explanatory drawing which shows 1 process of the rehabilitation method of the existing pipeline which concerns on embodiment of this invention. It is a side view which shows one form of the conveyance trolley | bogie used in the rehabilitation method of the said existing pipeline. It is a side view which shows the other form of the said carrying cart. FIG. 4 is a front view of the transport cart of FIG. 3. It is sectional drawing which shows the existing pipeline which applies the rehabilitation method which concerns on embodiment. It is a fragmentary sectional view which shows 1 process of the operation | work in an attachment pipe connection part in the rehabilitation method of the existing pipe line which concerns on embodiment. It is a side view which shows the tubular body which provided the attachment hole. It is explanatory drawing which shows the next process of FIG. 6 seeing from the upper direction of an existing pipeline. It is explanatory drawing which shows the next process of FIG. 8 seeing from the upper direction of an existing pipeline. FIG. 10 is a partial cross-sectional view showing the next step of FIG. 9. It is a fragmentary sectional view which shows the next process of FIG. FIG. 12 is a partial cross-sectional view illustrating the next process of FIG. 11.

  Hereinafter, a method for rehabilitating an existing pipe line according to an embodiment of the present invention will be described with reference to the drawings.

  Drawing 1 is an explanatory view showing one process of the rehabilitation method of the existing pipe line concerning the embodiment of the present invention.

  First, before explaining the rehabilitation method of the existing pipeline according to the present invention, an outline of the tubular body 100 used for this rehabilitation method will be explained.

  The tube body 100 is a plastic composite tube, and a short cylindrical receptacle 100a having an inner diameter corresponding to the outer diameter of the tube body is fixed to one end of a straight tube body having a constant inner and outer diameter. The other end portion of the tube main body is formed with a tapered surface-shaped outlet 100b that gradually becomes thinner toward the outside. As will be described later, the pipes 100 that are carried into the existing pipe line and arranged in the front and rear in the pipe axis direction insert the insertion port 100b of the other pipe body 100 into the receiving port 100a of the one pipe body 100. Are joined.

  The tubular body 100 is provided with a water stop rubber (not shown) on the inner peripheral surface of the receiving port 100a or the outer peripheral surface of the insertion port 100b. Thereby, when the insertion port 100b of the other tube body 100 is inserted and joined to the reception port 100a of the tube body 100, it is possible to seal the reception port 100a and the insertion port 100b through the water stop rubber. .

  Next, the outline | summary of the rehabilitation method of the existing pipeline which concerns on this embodiment is demonstrated.

  In the repair target location in the existing pipeline, the shaft M is cut at the end of the construction section, and the new pipe body 100 is conveyed from the shaft M toward the construction section of the main pipe 1. The vertical shaft M may be provided by excavation in an intermediate portion of the construction section. In this case, the pipe body 100 is conveyed toward one end and the other end of the construction section. The pipe body 100 is carried in after the inner peripheral surface of the construction section of the main pipe 1 is washed with high-pressure water.

  When the cleaning operation is completed, the pipe body 100 is suspended from the shaft M in order so that the outlet 100a faces the transport direction. Next, this tubular body 100 is installed in the transport carriage 9A. The transport carriage 9A raises the holding member 92 via the jack 91, and holds the tubular body 100 from the inside. In addition, a battery car (not shown) is connected to the transport carriage 9A, and the tube body 100 is transported to the construction section in the main pipe 1 using the battery car and the transport carriage 9A.

  A pedestal (not shown) is installed between the transported tube 100 and the tube bottom of the main tube 1. In addition, a levitating prevention material is disposed on the substantially upper half outer peripheral surface including the tube top of the tube 100. For example, as the anti-floating material, an arc-shaped plate material curved to an inner diameter corresponding to the outer diameter of the receiving port 100a of the tubular body 100 can be used. Thereby, the tubular body 100 can be supported and fixed so that the axial center thereof substantially coincides with the axis of the main pipe 1.

  If the top tube 100 is supported and fixed at a predetermined position in the construction section, the transport carriage 9A is collected in the shaft M through the battery car. Next, in the shaft M, the pipe body 100 is further suspended in order and supported by the transport carriage 9A. Thereafter, the tube body 100 is transported to the construction section using the battery car and the carriage 9A, and the receiving port 100a of the tube body 100 is inserted into the insertion port 100b of the leading tube body 100 and joined.

  If the succeeding tube body 100 is joined to the leading tube body 100, a pedestal is installed at the tube bottom portion of the main tube 1 corresponding to the succeeding tube body 100, and an anti-floating material is disposed on the outer peripheral surface of the tube body 100. Then, the tube body 100 is supported and fixed so that the axial center thereof substantially coincides with the axis of the main tube 1. Similarly, in the shaft M, the pipe body 100 is suspended in order, and a plurality of pipe bodies 100 are laid in the construction section.

  Then, a partition wall is installed and divided for every predetermined distance with respect to the rehabilitation pipe | tube and the main pipe 1 which consist of the several pipe body 100 in a construction area. Then, a backfilling material is injected into the gap between the partitioned inner peripheral surface of the main pipe 1 and the outer peripheral surface of the rehabilitated pipe using a grout hole formed in the pipe body 100. For the backfill material, for example, air mortar can be used. The filling operation of the backfill material is repeated for each fixed section of the rehabilitated pipe and the main pipe 1, and the backfill material is sequentially filled over the entire construction section. Thereby, a rehabilitation pipe | tube can be fixed integrally with respect to the main pipe 1, and the main pipe | tube 1 can be rehabilitated.

  When filling the backfill material, the anti-floating material attached to each tube 100 maintains the gap between the main tube 1 and the tube 100 and acts so that the tube 100 does not rise. Thereby, a backfilling material can be filled smoothly.

  In addition to the one shown in FIG. 1, for example, the carriage shown in FIG. The transport carriage 9B shown in FIG. 2 includes a support base 93 disposed at the lower portion of the tube body 100 and two holding rails 94 provided on the support base 93. The holding rails 94 are arranged in parallel along the axial direction of the tubular body 100 at intervals that can uniformly support the lower outer peripheral surface of the tubular body 100. Wheels 95 are provided at both ends of the support base 93 in the length direction. In addition, the holding rail 94 includes a plurality of rollers 96 on the upper surface portion in contact with the tube body 100. Each roller 96 is rotatably supported by a holding rail 94. Accordingly, the transport carriage 9B can transport the tubular body 100 and supports the retained tubular body 100 so as to be rotatable in the circumferential direction.

  Further, a transport cart 9C having the form shown in FIGS. 3 and 4 can also be suitably used. The carriage 9 </ b> C includes a support base 93 and a holding member 92 that is provided on the support base 93 and supports the tubular body 100. The support base 93 has a plate shape extending along the axial direction of the tubular body 100 and is disposed inside the tubular body 100 when used. Both ends of the support base 93 have a length that protrudes outward from both ends of the tube 100. Wheels 95 are provided at both ends of the support base 93 so that the support base 93 can be easily moved. In addition, a connecting portion 97 for connecting the battery car is provided at one end portion of the support base 93.

  The holding member 92 is disposed above the support base 93 along the axial direction of the tubular body 100. The holding member 92 is supported via a jack 91 by a support column 98 extending upward from the support base 93. The jack 91 is composed of a hydraulic or hydraulic actuator, and moves the holding member 92 up and down. By the operation of the jack 91, the holding member 92 rises and comes into contact with the inner peripheral surface of the tubular body 100, and further, the tubular body 100 is lifted by raising the holding member 92.

  In the transport carriage 9C, a plurality of rollers 96 are evenly arranged with respect to the vertically movable holding member 92. The roller 96 is rotatably supported by the holding member 92. The roller 96 is provided so that the upper part of the outer surface protrudes from the upper surface of the holding member 92. Thereby, the tubular body 100 supported by the holding member 92 can be rotated in the circumferential direction. Further, according to the transport carriage 9C, the support base 93 is disposed inside the tube body 100, and the holding member 92 and the roller 96 support the tube body 100 from the inner surface of the tube body 100. The body 100 can be carried into the main pipe 1.

  In these transport carts 9B and 9C, the roller 96 is not limited to a free roller, and may be driven and rotated by being provided with appropriate driving means.

  In the above-described existing pipe rehabilitation method, when the existing pipe includes the main pipe 1 and the attachment pipe 2 connected to the main pipe 1, the connection portion with the attachment pipe 2 in the middle of the pipe line, The connection work of the attachment pipe 2 and the pipe body 100 is performed in the following procedure.

  FIG. 5 is a cross-sectional view showing a connection portion between the main pipe 1 and the attachment pipe 2 in the existing pipe line, and FIGS. 6 to 12 are explanatory diagrams showing work steps in the attachment pipe connection part of the existing pipe line. .

  As shown in FIG. 5, the main pipe 1 is buried in the ground and is a culvert with a substantially rectangular cross-sectional shape. An attachment pipe 2 is connected to the main pipe 1 near the bottom. In the construction section of the existing pipe line, a plurality of anchor bolts 4 are first placed around the connection port 3 with respect to the connection port 3 of the attachment pipe 2. The anchor bolts 4 are evenly arranged around the connection port 3 of the attachment pipe 2 from the inner surface side of the main pipe 1. Thereby, the preparation which attaches the below-mentioned holder 5 is completed.

  Next, as shown in FIG. 6, a process of attaching the holder 5 to the inner surface of the main pipe 1 is performed. The holder 5 includes a cylindrical sleeve portion 51 and a flange portion 52 formed on the outer periphery of one end portion of the sleeve portion 51. The flange portion 52 is provided with a plurality of bolt holes 53. In the mounting operation, the flange portion 52 of the holder 5 is directed to the connection port 3 of the mounting tube 2, the flange portion 52 is brought into contact with the inner surface of the main tube 1, and the sleeve portion 51 is moved to the inner surface of the main tube 1. Place it in the direction to project. The shaft portion of the anchor bolt 4 is inserted into the bolt hole 53 of the flange portion 52. A nut 6 is screwed to the shaft portion of the anchor bolt 4 and fastened.

  Here, the inner diameter of the sleeve portion 51 of the holder 5 is formed to have a size approximately equal to the outer diameter of the mounting tube 2 or a size obtained by adding a slight margin to the outer diameter of the mounting tube 2. Accordingly, when the flange portion 52 of the holder 5 is fastened using the anchor bolt 4 and the nut 6, one end portion (end portion on the flange portion 52 side) of the sleeve portion 51 faces the main tube 1 of the attachment tube 2. The sleeve portion 51 of the holder 5 is arranged coaxially with the attachment tube 2 so as not to overlap the end face (see FIG. 8).

  In addition to the fastening with the anchor bolt 4 and the nut 6, an epoxy resin two-component bonding agent capable of joining the concrete and the vinyl chloride resin member may be used in combination for mounting the holder 5.

  By mounting the holder 5 in this way, the periphery of the connection port 3 of the attachment pipe 2 is covered with the flange portion 52 of the holder 5, and the vicinity of the connection port 3 of the attachment pipe 2 is deteriorated or damaged. Even in this case, it can be repaired by the above simple operation, and the connection pipe 7 described later can be easily installed.

  Further, as shown in FIG. 7, an attachment hole 10 for attaching the connection pipe 7 is drilled in the new pipe body 100.

  Here, the connecting pipe 7 is a pipe body that connects the connecting pipe 2 to which the pipe body 100 is to be connected, and is formed in a cylindrical shape having an inner diameter substantially equal to that of the mounting pipe 2. In installing the connection pipe 7, the attachment positions of the connection pipe 7 and the pipe body 100 are measured and determined, and the attachment hole 10 for attaching the connection pipe 7 is formed in the pipe body 100. Specifically, considering the distance for each section of the existing pipeline, the pipe diameter of the main pipe 1, the pipe body 100 and the mounting pipe 2, the distance between the pipe body 100 and the connection port 3, etc. Creating a diagram. From this pipe division diagram, the attachment position of the connection pipe 7 and the pipe body 100 is determined, and the attachment hole 10 is drilled.

  The mounting hole 10 is formed using a drilling tool such as a hole saw or a diamond cutter. The perforating work of the mounting hole 10 may be performed in the existing pipe line, but it is preferable to perform in advance on the ground or the like before the tube body 100 is transported.

  Next, as shown in FIG. 8, the tube body 100 with the attachment hole 10 drilled is conveyed to the connection portion with the attachment tube 2 in the main tube 1 and arranged at a predetermined position. At this time, it is preferable to use the transport cart 9C shown in FIG. That is, the transport body 9 </ b> C holds the tube body 100, is connected to the battery car, and is transported to the connection portion with the attachment tube 2. Thereby, it is not necessary to significantly reduce the diameter of the tube body 100 with respect to the inner diameter of the main pipe 1, and it is possible to regenerate a state in which the flow rate of the main pipe 1 is substantially maintained. Moreover, since the attachment position of the connection pipe 7 and the pipe body 100 is previously determined and the drilling process of the attachment hole 10 is performed for the pipe body 100, when the pipe body 100 is installed in the transport carriage 9C. Is also supported by being aligned in the circumferential direction in the direction corresponding to the mounting hole 10.

  After transporting the tube body 100 into the main tube 1, in the connection portion with the mounting tube 2, the centering of the mounting hole 10 of the tube body 100 and the axis of the holder 5 are finely aligned as necessary. Perform adjustment work such as adjustment. Such adjustment work is performed by rotating the tubular body 100 supported by the transport carriage 9C in the circumferential direction. As described above, since the transport carriage 9C is configured to include the plurality of rollers 96 on the holding member 92, when the operator rotates the pipe body 100 supported by the holding member 92 in the circumferential direction, the pipe body 100 is It can be easily rotated and adjusted easily. Thus, regardless of the diameter of the tube body 100, the operator can easily connect the axis of the attachment tube 2 and the center of the attachment hole 10 of the tube body 100 regardless of the tube body 100. It is possible to match.

  Next, the pedestal is installed between the tube body 100 that has been aligned and the tube bottom of the main tube 1. In addition, the levitation preventive material is disposed on the outer peripheral surface of the upper half portion including the top of the tube 100. As a result, the tube body 100 is arranged and fixed so that the axial center substantially coincides with the axis of the main tube 1.

  Next, as shown in FIG. 9, a step of arranging the connecting pipe 7 is performed. That is, the connecting pipe 7 is carried through the inner surface of the pipe body 100 that has been aligned. Then, the connection pipe 7 is inserted into the sleeve portion 51 of the holder 5 from the attachment hole 10 of the tube body 100, and the connection pipe 7 is held by the holder 5.

  As described above, the connection pipe 7 that connects between the attachment pipe 2 and the pipe body 100 is formed to have an inner diameter substantially equal to that of the attachment pipe 2. The holder 5 attached to the inner surface of the main pipe 1 is formed so that the inner diameter of the sleeve portion 51 is equal to or larger than the outer diameter of the connecting pipe 7. Further, the center of the mounting hole 10 of the tube body 100 and the axis of the mounting tube 2 are matched, and the holder 5 and the mounting tube 2 are disposed concentrically. For this reason, the connection pipe 7 can be appropriately disposed between the attachment pipe 2 and the pipe body 100 simply by inserting the connection pipe 7 into the holder 5.

  The connecting pipe 7 is formed with a pipe length longer than the distance L between the attachment pipe 2 and the pipe body 100. Therefore, when one end of the connection pipe 7 is brought into contact with the connection port 3 of the attachment pipe 2, the other end of the connection pipe 7 is projected from the attachment hole 10 of the tube body 100 to the inner surface (see FIG. 10).

  After the connection pipe 7 is disposed between the attachment pipe 2 and the pipe body 100 via the holder 5, depending on the connection position between the connection pipe 7 and the pipe body 100, the connection pipe 7 is connected to the attachment hole 10 of the pipe body 100. A gap is created between the tube 7 and the tube 7. Therefore, as shown in FIG. 10, a wooden wedge material (camber) 81 is driven into a plurality of locations in the gap around the connection pipe 7, and the connection pipe 7 is temporarily fixed coaxially with the attachment pipe 2.

  Next, the excess length of the connection pipe 7 protruding inside the pipe body 100 is cut off. The connection tube 7 is preferably cut away in a curved shape along the curvature of the inner surface of the tube body 100. By arranging the connecting pipe 7 in this way, the connecting pipe 7 can be arranged satisfactorily according to the arrangement of the mounting pipe 2 in the existing pipe line, the situation of the construction section, etc., and the working efficiency is remarkably improved. Enhanced.

  Next, as shown in FIG. 11, the gap between the other end of the connection pipe 7 cut along the inner surface of the tube body 100 and the mounting hole 10 of the tube body 100 is filled. The joint filling process is performed by filling the gap between the connection pipe 7 and the mounting hole 10 with the epoxy resin two-component bonding agent while removing the wedge material 81. Thereby, the connection pipe 7 and the pipe body 100 can be joined and integrated.

  In addition, as shown in FIG. 12, a caulking material (sealing material) 82 is applied or filled to the connection portion between the attachment tube 2 and the connection tube 7 and the joint portion between the holder 5 and the connection tube 7. Thus, the sealing process is performed. The caulking material 82 is preferably composed mainly of a synthetic resin material such as a silicone resin, an acrylic resin, or a urethane resin, and is applied or filled using an extruder 83 such as a caulking gun. Thereby, the water stop of the junction part of the attachment pipe 2 and the connection pipe 7 can be comprised. Moreover, since the attachment pipe 2 and the connection pipe 7 can be closely joined so that the inner peripheral surfaces thereof are substantially continuous, the water stop effect is greatly enhanced, and the entire flowing water from the attachment pipe 2 is supplied to the tube body 100. It becomes possible to lead.

  By passing through the above processes, the attachment pipe 2 and the connection pipe 7 are stably connected via the holder 5, and water leakage from the connection port 3 of the attachment pipe 2 can be prevented. In addition, the mounting pipe 2 and one end of the connecting pipe 7 and the other end of the connecting pipe 7 and the pipe body 100 can be suitably subjected to jointing treatment and sealing treatment with good workability, and reliable water stopping performance is achieved. It becomes possible to grant.

  When the operation relating to the connection portion between the main pipe 1 and the attachment pipe 2 is completed in the existing pipe line, the new pipe body 100 is further transported to the main pipe 1 and sequentially joined as described above. Thereafter, a partition wall is installed and divided every predetermined distance in the construction section, and a backfill material is injected between the main pipe 1 and the pipe body 100. Thereby, the rehabilitation work of the existing pipe line including the main pipe 1 and the attachment pipe 2 is completed.

  In addition, the rehabilitation method of the existing pipeline according to the present invention is not only applied to the substantially rectangular culvert shown in FIG. 5, but also a box culvert channel, a horseshoe channel, an open channel, a concrete tube, a steel tube, a corrugated tube, etc. It can be applied to existing pipelines of various types and shapes.

  The present invention can be suitably used as a method for rehabilitating an aging existing pipeline.

DESCRIPTION OF SYMBOLS 1 Main pipe 2 Mounting pipe 3 Connection port 4 Anchor bolt 5 Holder 51 Sleeve part 52 Flange part 53 Bolt hole 6 Nut 7 Connection pipe 81 Wedge material 82 Caulking material 9A, 9B, 9C Carriage cart 91 Jack 92 Holding member 93 Support stand 95 Wheel 96 Roller 10 Mounting hole 100 Tubing body 100a Receiving port 100b Insertion port M Vertical shaft

Claims (3)

A rehabilitation method for an existing pipe line in which a plurality of new pipes are laid and rehabilitated on an existing pipe line having a main pipe and a mounting pipe connected to the main pipe,
A holder having a cylindrical sleeve portion and a flange portion formed at one end of the sleeve portion is connected to the connection port of the attachment pipe in the middle of the main pipe, and the sleeve portion projects into the main pipe. Attaching to the inner surface of the main pipe in such a way that
Determining a mounting position between the pipe and the connecting pipe connecting the pipe and the mounting pipe, and drilling a mounting hole of the connecting pipe in the pipe;
Transporting the tubular body into the main pipe, and aligning the holder and the mounting hole of the tubular body;
Inserting and holding the connection pipe in the sleeve portion of the holder, and disposing the connection pipe between the pipe body and the attachment pipe via the holder;
Filling the gap portion between the holder and the connecting pipe and the connecting portion between the connecting pipe and the tube body with a bonding agent, and integrating them;
A method for rehabilitating an existing pipe line, comprising a step of performing a sealing process on a joint portion between the holder and the connection pipe. In the rehabilitation method of the existing pipeline according to claim 1,
The connecting pipe has an inner diameter substantially equal to the attachment pipe to be connected;
The retainer is a method for rehabilitating an existing pipe line, wherein an inner diameter of a sleeve portion is equal to or larger than an outer diameter of the connection pipe. In the rehabilitation method of the existing pipe line according to claim 1 or 2,
The connection pipe has a pipe length longer than a distance between the tube body and the attachment pipe, and one end of the connection pipe is brought into contact with a connection port of the attachment pipe, and the connection pipe is interposed via the holder. After removing the excess length of the other end of the connecting pipe projecting inside the pipe body, the pipe and the connecting pipe are joined and integrated. Road rehabilitation method.

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