JP2006207754A - Existing pipeline repairing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an existing pipeline repairing structure with inner face materials easy to assemble and of arranging work while saving labor without using a reinforcing material. <P>SOLUTION: A locking protrusion 3 is formed with a large-diameter head portion 31 on one end face of the inner face material 2, and a locking groove 4 is formed in the other end face of the inner face material 2 for locking the head portion 31 of the locking protrusion 3 after inserted and slid thereinto. Dovetail grooves 5 are formed in both side faces of the inner face material 2, and the inner face materials adjacent to each other in the peripheral direction are connected to each other via a connection member 6 which has dovetail portions 61 on both sides. The inner face materials 2 adjacent to each other in the axial direction are joined to each other via the locking protrusion 3 and the locking groove 4, and a hardening filler 7 is filled between the joined inner face material 2 and an existing pipeline 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lining repair structure for existing pipelines such as sewer pipes, and more particularly to a repair structure for existing pipelines suitable for covering and repairing the inner surface of a large-diameter existing pipeline. .

Many methods have been proposed for covering the inner surface of an existing pipeline with a lining material as a repair structure for an existing pipeline such as an aged sewer pipeline.
As such a lining repair structure, for example, in Patent Document 1 below, a hollow frame-shaped reinforcing material that is substantially along the inner surface of the existing pipeline is arranged in the existing pipeline, and the inside of the reinforcing material is arranged. By attaching a plurality of inner surface materials that are continuous in the axial direction of the existing pipe line in close contact with the circumferential direction of the existing pipe line, the whole is assembled into a cylindrical shape along the axial direction of the existing pipe line, and assembled into the cylindrical shape. A repair method is disclosed in which a curable filler is filled between the formed inner surface material and an existing pipe line.
Further, in Patent Document 2 below, a hollow frame-shaped reinforcing material is arranged in an existing pipeline, and an inner surface material along the axial direction of the existing pipeline is continuously provided in the circumferential direction inside the reinforcing material. Pipelined lining structures have been proposed that can solve problems in manufacturing and transportation even if the length of attachment and repairing of the pipeline is long and the required length of the inner surface material is long.

However, in the above-described conventional existing pipeline repair structure, if the former tries to use the inner surface material and the fitting member that are continuous in the axial direction as the repair length of the existing pipeline becomes longer, Difficult cases have occurred on equipment. That is, the inner surface material and the fitting member are usually wound around a drum or a reel at the time of manufacture, but if the length exceeds a certain limit, the outer diameter of the drum or the reel after winding increases, There are problems such as installation space at the site, and when these drums and reels are transported, there is a problem that a transport vehicle becomes large and entry into a normal lane becomes difficult.
Although the latter solves these problems, the reinforcing material is composed of a number of members when the hollow frame-shaped reinforcing material is arranged in the existing pipeline, so that the reinforcing material is assembled in the existing pipeline. There is a problem that a great deal of labor is required, and furthermore, the number of inner surface materials is large, and a great deal of labor is required to lock them to the fitting members.

JP 2001-311387 A JP 2002-310378 A

  In view of the problems of the above-described conventional repair structure of existing pipes, the present invention eliminates the trouble without using a reinforcing material and can easily assemble and dispose the inner surface material. The purpose is to provide road repair structures.

In order to achieve the above-mentioned object, the repair structure for an existing pipeline according to the present invention is an existing pipeline in which a strip-like inner surface material divided in the axial direction and circumferential direction of the existing pipeline is lined on the inner surface of the existing pipeline. In the repair structure, by forming a locking projection having a large-diameter head on one end surface of the inner surface material, and inserting and sliding the head of the locking projection on the other end surface of the inner surface material By forming a locking groove to be locked, forming grooves on both side surfaces of the inner surface material, and connecting inner surface materials adjacent to each other in the circumferential direction with connecting members having portions on both sides, the axial direction The inner surface materials adjacent to each other are bonded to each other by the locking protrusions and the locking grooves, and a curable filler is filled between the bonded inner surface material and the existing pipe line.
The “grooves” and “living portions” here are not limited to pigeon tails, but also include T-shapes.

  In this case, the connecting member has a wedge-shaped loose taper, and is inserted into and fixed to a dovetail groove having a surface substantially parallel to the taper, and the length of the connecting member is larger than the length of the dovetail groove. It can be formed short.

  Further, it is possible to impart lubricity to at least one of the connecting member and the dovetail groove.

  Moreover, packing can be arrange | positioned in the contact part of a dovetail groove and a connection member, and / or the contact part of a latching protrusion and a latching groove.

  Further, the moisture curable sealing material can be continuously filled in the longitudinal and lateral directions at the connecting portion of the inner surface material.

  The repair structure of an existing pipe line according to the present invention is the repair structure of an existing pipe line in which a strip-like inner face material divided in the axial direction and circumferential direction of the existing pipe line is lined on the inner face of the existing pipe line. A locking projection having a large-diameter head is formed on one end surface of the inner surface, and a locking groove for locking by inserting and sliding the head of the locking projection on the other end surface of the inner surface material. Forming and forming grooves on both side surfaces of the inner surface material, and connecting the inner surface materials adjacent in the circumferential direction with connecting members having portions on both sides, thereby connecting the inner surface materials adjacent in the axial direction to each other. Since each of the locking projections and the locking grooves are joined to each other, it is possible to very easily assemble and arrange the inner surface material, and harden between the joined inner surface material and the existing pipe line. To fill the inner surface material more reliably. The integrated existing conduit and the inner surface material, it is possible to strengthen the pipe to withstand use for a long period of time.

  In addition, the connecting member has a wedge-shaped loose taper, and is inserted and fixed in a dovetail groove having a surface substantially parallel to the taper, and the length of the connecting member is shorter than the length of the dovetail groove. By doing so, joining of inner surface materials can be performed more reliably.

  Further, by providing slipping property to at least one of the connecting member and the dovetail groove, the connecting member can be slipped in the dovetail groove and the joining of the inner surface materials can be facilitated.

  Further, by providing packing at the contact portion between the dovetail groove and the connecting member and / or the contact portion between the locking protrusion and the locking groove, it is possible to prevent water from entering and leaving the pipe.

  In addition, water can be prevented from entering and exiting the inside and outside of the pipe by continuously filling the connecting portion of the inner surface material with a moisture curable sealing material vertically and horizontally.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an existing pipeline repair structure according to the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the repair structure of an existing pipe line according to the present invention in a circumferential sectional view and an axial sectional view.
The repair structure of the existing pipe line is, for example, a strip-shaped inner surface material that is divided in the axial direction and the circumferential direction of the existing pipe line 1 on the inner surface of the existing pipe line 1 (repair pipe) having an inner diameter of 1200 mm that requires repair. 2 is lined.
The repair structure of the existing pipe line is formed with a locking projection 3 having a large-diameter head portion 31 on one end surface of the inner surface material 2 and on the other end surface of the inner surface material 2. While forming the locking groove 4 which locks by inserting and sliding the head part 31 of the protrusion 3, it forms the groove 5 on both sides of the inner surface material 2, and the inner surface materials 2 adjacent to each other in the circumferential direction. By connecting with the connecting member 6 having the portions 61 on both sides, the inner surface materials 2 adjacent to each other in the axial direction are joined to each other by the locking projections 3 and the locking grooves 4, and the joined inner surface materials. A curable filler 7 is filled between 2 and the existing pipe line 1.

As shown in FIG. 2, the inner surface material 2 has a cross-sectional arc shape along the inner surface of the existing pipe line 1 and includes a plurality of ribs 21 in the arc direction. Further, in this embodiment, the inner surface material 2 has a width obtained by dividing the inner surface of the existing pipe line 1 into approximately eight parts in the circumferential direction, and has a rectangular shape made of a synthetic resin having an appropriate axial length such as 50 cm. Consists of things.
Here, as described above, the inner surface material 2 is usually made of a synthetic resin, but a thermoplastic resin can be preferably used from the viewpoint of moldability, and in particular, it is economical, flexible, adhesive and the like. Excellent vinyl resin-based vinyl chloride resin and vinyl acetate resin can be optimally used. Other resins such as olefin resin-based polyethylene resins and polypropylene resins, mixtures of these synthetic resins, copolymers of these synthetic resins with ethylene-vinyl acetate, elastomers, modified polyolefins, etc. These mixtures can also be suitably used, and most known rubbers can be used in combination, both natural and synthetic.

As shown in FIGS. 3A to 3B, the locking protrusion 3 is formed at two locations on one end face of the inner surface material 2, and the locking groove 4 is a position corresponding to the locking protrusion 3. Thus, two portions are formed on the other end face of the inner surface material 2.
3 (c) to 3 (d), the locking groove 4 has a large diameter portion 41 and a small diameter portion 42 like a dart hole, and the locking protrusion inserted into the large diameter portion 41. 3 is moved to the small diameter portion 42 by shifting the inner surface material 2 in the circumferential direction, thereby locking the head portion 31 of the locking projection 3 and joining the inner surface materials 2 adjacent to each other in the axial direction.
The joining of the inner surface materials 2 adjacent to each other in the axial direction is performed while the next inner surface material 2 is applied one by one to the inner surface material 2 formed in a cylindrical shape and moved in the circumferential direction.
In this case, since at least one of the inner surface materials 2 joined in the circumferential direction cannot be moved in the circumferential direction, the locking projection 3 is not provided. FIG. 5 shows an example of the arrangement of the inner surface material 2 </ b> X that does not have the locking protrusion 3.
Further, in joining the inner surface materials 2 adjacent to each other in the axial direction, the next inner surface material 2 is shifted in the circumferential direction by a half pitch with respect to the previous inner surface material 2, as shown in FIGS. It is preferable to arrange in such a manner.
In addition, on the end surface and the side surface of the inner surface material 2, small ridges 8 and grooves 9 that are fitted to each other are formed in order to improve the sealing performance.

Moreover, as shown in FIG. 4, the groove | channel 5 with a T-shape is formed in the both sides | surfaces of the inner surface material 2, and the inner surface materials 2 adjacent in the circumferential direction are T-shaped present portions on both sides. They are connected by a connecting member 6 having 61.
As shown in FIGS. 3 (f) to 3 (i), the connecting member 6 has a wedge-like loose taper and is inserted into and fixed to the dovetail groove 5 having a surface substantially parallel to the taper. In addition, the length of the connecting member 6 can be formed shorter than the length of the groove.
In this case, by providing slipping property to at least one of the connecting member 6 and the dovetail groove 5, the connecting member 6 can be made to slide within the dovetail groove 5 and the joining of the inner surface materials 2 can be facilitated.
In addition, by filling the connecting portion of the inner surface material 2 with a moisture-curable sealing material continuously in the vertical and horizontal directions, it is possible to prevent water from entering and leaving the pipe.
Can do.

  The connecting member 6 can be made of the same synthetic resin or rubber as the inner surface material 2 described above.

  Further, as the sealing material, a generally known material such as a urethane-based sealing material can be appropriately used.

  Further, the contact portion between the dovetail groove 5 and the connecting member 6 and the contact portion between the locking projection 3 and the locking groove 4 are generally made of rubber or synthetic resin and, if necessary, a material having water expandability. By providing a packing (not shown) of a known material, water can be prevented from entering and exiting the pipe.

On the other hand, as shown in FIG. 1, a curable filler 7 is injected between the joined inner surface material 2 and the existing pipe line 1, and the injected curable filler 7 further joins the inner surface material 2. In addition to the reliability, the existing pipe line 1 and the inner surface material 2 can be integrated to further strengthen the pipe line 1.
As the curable filler 7, for example, a generally known material such as cement-based or synthetic resin-based mortar can be used as appropriate.

  Thus, the repair structure of the existing pipe line according to the present embodiment is such that the inner surface of the existing pipe line 1 is lined with the strip-shaped inner surface material 2 divided in the axial direction and the circumferential direction of the existing pipe line 1. In the repair structure, a locking projection 3 having a large-diameter head portion 31 is formed on one end surface of the inner surface material 2, and the head portion 31 of the locking projection 3 is formed on the other end surface of the inner surface material 2. In addition to forming the locking grooves 4 to be locked by inserting and sliding, the grooves 5 are formed on both side surfaces of the inner surface material 2, and the inner surface materials 2 adjacent to each other in the circumferential direction are provided with the portions 61 on both sides. Since the inner surface members 2 that are adjacent in the axial direction are joined to each other by the locking projections 3 and the locking grooves 4 by being connected by the connecting members 6, the assembly and arrangement work of the inner surface material 2 is performed. It can be performed very easily, and it is hard between the joined inner surface material 2 and the existing pipe line 1 Since the filling material 7 is filled, the inner surface material 2 can be more reliably joined and the existing pipe line 1 and the inner surface material 2 can be integrated to strengthen the pipe line 1 so as to withstand long-term use. .

  In this case, the connecting member 6 has a wedge-shaped loose taper and is inserted into and fixed to the dovetail groove 5 having a surface substantially parallel to the taper. By forming it shorter than the length of, it is possible to more reliably join the inner surface materials 2 to each other.

  Further, by providing slipping property to at least one of the connecting member 6 and the dovetail groove 5, the connecting member 6 can be made to slide in the dovetail groove 5, and the joining of the inner surface materials 2 can be facilitated.

  Further, by providing packing at the contact portion between the dovetail groove 5 and the connecting member 6 and / or the contact portion between the locking protrusion 3 and the locking groove 4, it is possible to prevent water from entering and leaving the pipe. it can.

  Further, by filling the connecting portion of the inner surface material 2 with a moisture-curable sealing material continuously in the vertical and horizontal directions, it is possible to prevent water from entering and leaving the pipe.

In addition, although the cross-sectional shape of an existing pipe line, its internal diameter, and length are not specifically limited, the existing pipe line whose diameter is 1000-2000 mm can be selected suitably.
In this case, the size of the inner surface material can be suitably set in the range of 400 to 1000 mm in length and width and 30 to 50 mm in thickness in consideration of the amount of water flowing in the pipe, the strength of repair, and the labor of assembly.
Further, the shape and size of the connecting member and the dovetail groove, the locking projection and the locking groove are not particularly limited as long as they are locked together, and the inner surface of the repaired existing pipe line forms a flat curved surface or plane. Each of these members may be designed.

  As mentioned above, although the repair structure of the existing pipe line of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, In the range which does not deviate from the meaning, that The configuration can be changed.

  The existing pipeline repair structure of the present invention is excellent in workability, economy, durability, water resistance, strength, etc., so it is suitable for pipes such as sewers, and also suitable for vertical holes such as manholes. Can be applied.

One Example of the repair structure of the existing pipe line of this invention is shown, (a) is an expanded view, (b) is sectional drawing of an axis perpendicular direction. An example of the inner surface material used in the embodiment is shown, (a) is a front view, (b) is a sectional view taken along line AA of (a), (c) is a bottom view, (d) is a left side view, (E) is the BB sectional drawing of (a), (f) is a right view. The inner surface material and the connecting member are shown, (a) is an enlarged front view showing a locking projection of the inner surface material, (b) is a sectional view taken along the line AA of (a), and (c) is a locking groove of the inner surface material. (D) is a sectional view taken along line AA of (b), (e) is a sectional view showing a locking state of the locking protrusion and the locking groove, and (f) is a part of the connecting member. Omitted front view, (g) is the same part omitted bottom view, (h) is the left side view, (i) is the right side view. The joining state of the inner surface material by a connection member and a dovetail groove | channel is shown, (a) is the cross-sectional top view which abbreviate | omitted one part, (b) is the sectional view on the AA line of (a). It is expansion | deployment explanatory drawing which shows the example of arrangement | positioning of the inner surface material which does not provide a latching protrusion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Existing pipe line 2 Inner surface material 2X Inner surface material which does not provide a locking protrusion 21 Rib 3 Locking protrusion 31 Head 4 Locking groove 41 Large diameter part 42 Small diameter part 5 Groove 6 Linking member 61 Present part 7 Curable filler 8 ridge 9 groove

Claims (5)

  In the repair structure of an existing pipeline in which a strip-shaped inner surface material divided in the axial direction and circumferential direction of the existing pipeline is lined on the inner surface of the existing pipeline, a large-diameter head is provided on one end face of the inner surface material. A locking groove is formed on the other end surface of the inner surface material, and a locking groove for locking by inserting and sliding the head of the locking projection is formed on both side surfaces of the inner surface material. A groove is formed, and inner surface materials adjacent in the circumferential direction are connected to each other by a connecting member having a portion on both sides, whereby inner surface materials adjacent in the axial direction are connected by the locking protrusion and the locking groove. A repairing structure for an existing pipeline, characterized in that each is joined and a curable filler is filled between the joined inner surface material and the existing pipeline.   The connecting member has a wedge-shaped taper and is inserted into and fixed to a dovetail groove having a surface substantially parallel to the taper, and the length of the connecting member is shorter than the dovetail groove length. The repair structure for an existing pipe line according to claim 1.   The repair structure for an existing pipe line according to claim 1 or 2, wherein at least one of the connecting member and the dovetail groove is provided with lubricity.   4. A repair structure for an existing pipe line according to claim 1, wherein packing is provided at a contact portion between the dovetail groove and the connecting member and / or a contact portion between the locking projection and the locking groove.   The repair structure for an existing pipe line according to claim 1, 2, 3, or 4, wherein the connecting portion of the inner surface material is continuously and vertically filled with a moisture-curable sealing material.

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