JP2016205044A - Repairing member of cylindrical part, underground drainage facility with the same, and repairing method of cylindrical part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a repairing member of a cylindrical part that can easily repair the cylindrical part without depending on degradation or breakage places of the cylindrical part, and provide repairing methods of underground drainage facilities with the same and the cylindrical part.SOLUTION: A repairing member 1 includes: a repair invert 2 formed annularly and inserted into a cylindrical part 52 so that a first hole part 10 is positioned on an invert flow path 56; one or more repair rings 3 formed annularly and stacked on the repair invert 2 so that a second hole part 20 is positioned on the first hole part 10; a vertical pipe 4 installed on a repair ring 3b positioned uppermost so that a conduit 30 is positioned on the second hole part 20; an annular seal member 5 provided by coming into contact with the circumference of the repair ring 3b and the inner circumferential surface of the cylindrical part 52, and having flexibility; a filler 6 coming into contact with the seal member 5 and filled in a space in the cylindrical part 52 upper than the seal member 5; and a protection lid 7 provided upper than the filler 6 and exposed partly on the ground, and covering a vertical pipe opening part 4a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cylinder member repair member, an underground drainage facility including the same, and a cylinder part repair method.

  Pipes of underground drainage facilities buried in the ground (hereinafter referred to as existing pipes) may be eroded and deteriorated by corrosive gas or deposits due to long-term use. In addition, existing pipelines may be damaged by land subsidence or pressure from the ground. If the existing pipeline is damaged, the water in the existing pipeline may leak to the outside. Therefore, repairs to existing pipelines that have been damaged are being carried out.

  As a technique for repairing an existing pipe line, for example, Patent Document 1 discloses that an old protective iron lid and a concrete top member are removed and a donut-shaped pedestal is loaded on the remaining portion of the concrete base. ing.

  Moreover, although it differs from the technique which repairs the above existing pipelines, the technique for preventing a manhole from floating by the liquefaction of the ground is proposed. For example, Patent Literature 2 discloses that the weight body is installed by bringing the outer peripheral surface of an annular weight body into contact with the inner peripheral surface of a manhole.

JP 2003-213712 A Japanese Patent No. 5064347

  However, the technique of Patent Document 1 only refers to a method for repairing an old protective iron lid and a concrete upper member, and there is a limit to the repair part of the concrete. That is, Patent Document 1 does not propose a technique capable of repairing a damaged portion when a portion other than the protective iron cover of the concrete strip and the upper member, that is, a cylinder portion of the concrete strip is damaged. Moreover, in the technique of patent document 2, since the operation | work which installs the heavy body which cannot be lifted by a human hand is required, workability | operativity is difficult and it is difficult to work easily. Furthermore, the technique of Patent Document 2 provides a weight body to prevent the manhole from floating due to liquefaction of the ground, and does not repair the manhole.

  The present invention has been made in view of such a point, and its purpose is to provide a repair member for a cylindrical portion capable of easily repairing the cylindrical portion regardless of a deteriorated portion or a damaged portion of the cylindrical portion, It is to provide an underground drainage facility provided and a method of repairing a tubular portion.

  The cylindrical member repairing member according to the present invention has an opening on the upper side, a cylindrical portion having an inlet and an outlet on the side, a cylindrical portion formed inside, and provided from the inlet to the outlet. And an invert in which a long groove-like invert channel is formed, and a repair member for repairing a manhole or a manhole that is buried in the ground, is formed in an annular shape, and has a first hole in the center. A repair invert having an outer diameter smaller than the inner diameter of the cylindrical portion, and being inserted into the cylindrical portion so that the first hole portion is positioned on the invert flow path; One or more repair rings that are stacked on the repair invert so that the second hole portion is positioned above the first hole portion, and has an outer diameter smaller than the inner diameter of the cylindrical portion. It has a pipe opening and has a pipe line leading to the vertical pipe opening, and the pipe line is the second A standing pipe installed on a repair ring positioned at the top of one or a plurality of repair rings so as to be positioned on the part, a periphery of a repair ring of any one or a plurality of repair rings, and a cylindrical portion An annular seal member having flexibility, provided in contact with the inner peripheral surface of the cylinder or in contact with the periphery of the repair invert and the inner peripheral surface of the cylindrical portion, and above the seal member in contact with the seal member And a protective cover that is provided above the filler and partially exposed to the ground and covers the riser opening. “The repair ring located at the top of one or more repair rings” refers to the repair ring when one repair ring is used, and among the plurality of repair rings when a plurality of repair rings are used. Refers to the repair ring located at the top.

  According to the cylindrical member repairing member of the present invention, the filler in contact with the sealing member is filled in the space in the cylindrical portion above the sealing member, so that the cylindrical portion on the inner peripheral surface of the cylindrical portion. Repair can be easily performed by closing the damaged or deteriorated portion of the material with a filler. This prevents the drainage in the cylinder part from leaking to the outside and prevents water outside the cylinder part from entering the cylinder part from the damaged part. It is also possible to prevent a tree root or the like outside the cylindrical portion from entering the cylindrical portion from the damaged portion. In the present invention, when the damaged portion is generated at a high position of the cylindrical portion, the number of repair rings is increased to provide the seal member at a high position, and the filler is filled. On the other hand, when the damaged portion is generated at a low position of the cylindrical portion, the number of repair rings is reduced, the seal member is provided at a low position, and the filler is filled. Thereby, the said cylinder part can be repaired easily irrespective of the damage location and degradation location of a cylinder part.

  According to a preferred aspect of the present invention, the seal member is provided in contact with the upper edge of the uppermost repair ring and the inner peripheral surface of the cylindrical portion.

  According to the above aspect, when the seal member is provided in contact with the repair invert and the inner peripheral surface of the cylindrical portion, or provided in contact with the repair ring different from the uppermost repair ring and the inner peripheral surface of the cylindrical portion. Compared to the case, the amount of filler such as mortar can be reduced. Thereby, the construction period can be shortened.

  According to another preferred aspect of the present invention, the invert includes a first invert forming portion and a second invert forming portion that are disposed on both sides of the invert channel while supporting the repair invert. The forming portion has an inclined upper surface whose height decreases toward the invert flow path, the second invert forming portion has an inclined upper surface whose height decreases toward the invert flow path, and the repair invert The inclined upper surface of the first invert forming portion and the inclined upper surface of the second invert forming portion are in contact with the inclined upper surface of the first invert forming portion and the inclined lower surface of the second invert forming portion.

  According to the said aspect, the adhesiveness of repair invert with respect to invert can be improved. As a result, the repair invert is stably supported by the invert. In particular, when one or a plurality of repair rings are stacked on the repair invert, it is more desirable to adopt this mode.

  According to another preferred aspect of the present invention, the repair invert includes a cutout portion in which an outer peripheral surface of the repair invert is cut out in a radial direction and formed in a semicircular shape in a side view, and the cutout portion is an invert It is arranged on the flow path.

  According to the said aspect, interference of repair invert with respect to an invert flow path and the flow path above it can be eliminated. That is, the repair invert can be arranged so as not to block the invert flow path and the flow path above it.

  According to another preferable aspect of the present invention, the outer peripheral portion of the first hole portion is formed horizontally in the upper surface of the repair invert.

  According to the above aspect, the repair ring can be stably supported.

  According to another preferable aspect of the present invention, the repair invert further includes a first convex portion formed at an upper portion of the repair invert and a concave portion formed at a lower portion of the repair ring, and the first convex portion of the repair invert includes: It is fitted in the recess of the repair ring.

  According to the above aspect, the repair ring can be stably stacked on the repair invert. Further, misalignment of the repair ring with respect to the repair invert can be prevented.

  According to another preferable aspect of the present invention, the first convex portion of the repair invert is formed outside the outer peripheral portion in the radial direction of the first hole portion.

  According to the said aspect, a 1st convex part can be formed in the outer side of the said outer peripheral part, forming a 1st hole part inside an outer peripheral part.

  According to another preferable aspect of the present invention, the concave portion of the repair ring is spaced a predetermined distance outward from the second hole portion in the radial direction of the second hole portion so that the first convex portion of the repair invert fits. Is formed.

  According to the said aspect, the recessed part of a repair ring can be formed in the position where the 1st convex part of repair invert fits.

  According to another preferable aspect of the present invention, the second protrusion further includes a second protrusion formed on an upper portion of the repair ring, and the second protrusion is outward from the second hole in the radial direction of the second hole. The distance is the same as the predetermined distance.

  According to the above aspect, when another repair ring is stacked on the repair ring, the second convex portion of the repair ring can be fitted into the concave portion of the another repair ring. Thereby, another repair ring can be stably stacked on the repair ring. Further, misalignment of another repair ring with respect to the repair ring can be prevented.

  According to another preferable aspect of the present invention, the first convex portion of the repair invert, the concave portion of the repair ring, and the second convex portion are tapered toward the upper side in a state where the repair invert and the repair ring are installed. It is formed in a taper shape.

  According to the above aspect, the repair ring can be easily stacked on the repair invert, and the repair ring can be easily removed from the repair invert. In addition, another repair ring can be easily stacked on the repair ring, and another repair ring can be easily detached from the repair ring.

  According to another preferable aspect of the present invention, the outer peripheral portion of the second hole portion is formed horizontally in the upper surface of the repair ring, and the standing pipe is installed on the outer peripheral portion of the repair ring.

  According to the above aspect, the vertical pipe can be stably installed while preventing rolling.

  According to another preferable aspect of the present invention, it further includes an annular pedestal that supports the protective lid and is disposed over the filler and the upper end of the cylindrical portion.

  According to the said aspect, the pressure by the load of a protective cover can be disperse | distributed to a filler and the upper end of a cylinder part. Therefore, even when a protective lid is installed in a place with many vehicles, the pressure from the protective lid is dispersed, so that the pressure applied to the filler and the repair invert and the repair ring provided below the filler is reduced. be able to. Therefore, the usable period of the filler, the repair invert and the repair ring can be extended.

  The underground drainage facility according to the present invention has an opening on the upper side, a cylindrical part having an inlet and an outlet on the side, and a long groove formed inside the cylindrical part and provided from the inlet to the outlet. An underground drainage facility comprising an invert formed with a shaped invert channel and buried in the ground or a manhole, and a repair member for repairing the manhole or the manhole, the repair member being , Formed in an annular shape, having a first hole in the center, having an outer diameter smaller than the inner diameter of the tube, and being inserted into the tube so that the first hole is positioned on the invert channel A repair invert, which is formed in an annular shape, has a second hole in the center, has an outer diameter smaller than the inner diameter of the cylindrical portion, and is repaired so that the second hole is positioned above the first hole. One or more repair rings stacked on top and a standpipe opening above A standing pipe installed on a repair ring positioned at the top of the one or more repair rings so that the pipe line is located above the second hole. Flexibility provided in contact with the periphery of one of the repair ring and one of the plurality of repair rings and the inner peripheral surface of the cylinder, or in contact with the periphery of the repair invert and the inner peripheral surface of the cylinder An annular sealing member having a property, a filler that is in contact with the sealing member and filled in a space in the cylindrical portion above the sealing member, and a part of the ground is provided above the filler and exposed to the ground. And a protective lid covering the opening of the vertical pipe.

  According to the underground drainage facility according to the present invention, when the cylinder portion is damaged or deteriorated, the cylinder portion can be repaired using the repair member of the present invention.

  The cylindrical portion repairing method according to the present invention is formed in a cylindrical portion having an opening on the upper side and having an inlet and an outlet on the side, and provided inside the cylindrical portion, and provided from the inlet to the outlet. And an invert in which a long groove-like invert channel is formed, and is a repair method for repairing a manhole or an underground buried in the ground, which is formed in an annular shape and has a first hole in the center. A step of inserting a repair invert having an outer diameter smaller than the inner diameter of the cylindrical portion into the cylindrical portion such that the first hole portion is positioned on the invert flow path, and a second hole portion formed in an annular shape at the center And stacking one or more repair rings having an outer diameter smaller than the inner diameter of the cylindrical portion on the repair invert so that the second hole portion is positioned on the first hole portion, and flexibility An annular seal member having one or more repair rings A step of providing contact with the periphery of one of the repair rings and the inner peripheral surface of the cylindrical portion, or a step of providing contact with the periphery of the repair invert and the inner peripheral surface of the cylindrical portion; Installing a standpipe having a conduit leading to the standpipe opening on a repair ring positioned at the top of the one or more repair rings such that the conduit is positioned above the second hole; A process of filling the space in the cylindrical portion above the seal member in contact with the seal member, and a standing tube opening arranged above the filler with the protective cover partially exposed on the ground And a step of covering the part.

  According to the method for repairing a cylindrical portion according to the present invention, since the filler in contact with the seal member is filled in the space in the cylindrical portion above the seal member, the cylindrical portion on the inner peripheral surface of the cylindrical portion. Repair can be easily performed by closing the damaged or deteriorated portion of the material with a filler. This prevents the drainage flowing in the cylinder part from leaking to the outside and prevents water outside the cylinder part from entering the cylinder part from the damaged part. It is also possible to prevent the tree root and the like outside the tube part from entering the tube part from the damaged part. In the present invention, when the damaged portion is generated at a high position of the cylindrical portion, the number of repair rings is increased to provide the seal member at a high position, and the filler is filled. On the other hand, when the damaged portion is generated at a low position of the cylindrical portion, the number of repair rings is reduced, the seal member is provided at a low position, and the filler is filled. Thereby, the said cylinder part can be repaired easily irrespective of the damage location and degradation location of a cylinder part.

  According to the present invention, a tubular member repairing member capable of easily repairing the tubular portion regardless of a deteriorated or damaged portion of the tubular portion, an underground drainage facility provided with the same, and a method for repairing the tubular portion Can be provided.

It is sectional drawing of the repair member inserted in the cylinder part of the top which concerns on one Embodiment of this invention. (A) is the top view which concerns on one Embodiment of this invention, (b) is the IIb-IIb sectional view taken on the line of (a). (A) is a top view of repair invert concerning one embodiment of the present invention, (b) is a IIIb-IIIb line sectional view of (a), and (c) is a IIIc-IIIc line section of (a). FIG. (A) is a top view of the repair ring which concerns on one Embodiment of this invention, (b) is the IVb-IVb sectional view taken on the line of (a). (A)-(d) is explanatory drawing for demonstrating the order of the repair method by the repair member which concerns on one Embodiment of this invention. (A)-(c) is explanatory drawing for demonstrating the order of the repair method by the repair member which concerns on one Embodiment of this invention. It is sectional drawing of the repair member inserted in the cylinder part of the other concerning other embodiment of this invention.

  Hereinafter, embodiments of a repair member for a tubular portion, an underground drainage facility including the same, and a repair method for the tubular portion according to a first embodiment of the present invention will be described.

  As shown in FIG. 1, the underground drainage facility 100 is a facility that is buried in the ground and allows drainage to flow. In this specification, “drainage” means discharged water, and includes so-called sewage and rainwater. The underground drainage facility 100 according to the present embodiment includes 50 and the repair member 1. Hereinafter, although the case where 50 cylindrical parts 52 are repaired with the repair member 1 is demonstrated, it is also possible to repair a manhole similarly. The “repair” in the present invention is not to restore the damaged cylinder part 52 itself but to restore the function of the damaged cylinder part 52 as a pipeline.

  As shown in FIG. 2 (b), the first 50 is formed in a bottomed cylindrical shape. The first 50 includes a bottom 51, a cylinder 52 connected to the bottom 51 and extending toward the ground, and a cylindrical upper member 53 stacked on the upper end 52 a of the cylinder 52. An annular groove 53a is formed in the upper part of the upper member 53, and a flat lid 54 is installed in the groove 53a. The upper surface 54a of the lid 54 installed in the groove 53a is substantially flush with the ground. As shown in FIG. 2A, an inflow port 57 and an outflow port 58 are provided through the side of the cylindrical portion 52. An inflow pipe (not shown) is connected to the inflow port 57. An outflow pipe (not shown) is connected to the outflow port 58. In repairing, the upper member 53 and the lid 54 are removed. The first 50 includes an invert 55 formed on the bottom 51. The invert 55 supports a repair invert 2 (see FIG. 1), which will be described in detail later. The invert 55 is formed with an invert channel 56 having a long groove shape provided from the inlet 57 toward the outlet 58. The invert 55 includes a first invert forming portion 55a and a second invert forming portion 55b disposed on both sides of the invert flow channel 56. The first invert forming portion 55 a has a first inclined upper surface 55 a 1 that decreases in height toward the invert channel 56. The second invert forming portion 55 b has a second inclined upper surface 55 b 1 that decreases in height toward the invert channel 56. The drainage flows into the invert channel 56 from the inlet 57, and the drainage that has flowed through the invert channel 56 flows out of the outlet 50 through the outlet 58.

  In the present embodiment, 50 cylindrical portions 52 are further damaged, and repair using the repair member 1 is performed on the damaged portion. Hereinafter, details of the repair member 1 will be described. As shown in FIG. 1, the repair member 1 includes a repair invert 2, one or more repair rings 3, a standing tube 4, a flexible seal ring 5, a mortar 6, a protective lid 7, And a lid 8. When repairing the cylindrical portion 52, first, the upper member 53 and the lid 54 (both see FIG. 2) are removed as described above.

  The repair invert 2 is formed by resin molding, for example. If resin is used, it will be easy to mold. The repair invert 2 is supported by the invert 55. The repair invert 2 should just have the external shape along the internal peripheral surface of the cylinder part 52. FIG. The repair invert 2 is formed in an annular shape. The thickness of the repair invert 2 may be thin. Specifically, the thickness of the repair invert 2 may be smaller than the thickness of the cylindrical portion 52. The repair invert 2 is formed smaller than the inner diameter of the cylindrical portion 52. As shown in FIGS. 3A and 3B, the first hole 10 is formed in the center of the repair invert 2. The repair invert 2 includes a notch 11. The notch 11 is formed in a semicircular shape when viewed from the side by cutting the outer peripheral surface of the repair invert 2 in the radial direction. As shown in FIG. 1, the repair invert 2 is disposed on the invert 55 such that the notch 11 is positioned above the invert flow path 56 and straddles the invert flow path 56. The notch 11 is formed larger than the inflow port 57 and the outflow port 58. Thereby, it can open | release, without blocking the invert flow path 56 and the flow path above it. In addition, although the notch part 11 is formed at the time of a shaping | molding process, it is not limited to this. An operator may process the notch portion 11 in the repair invert 2 by using a grinder or the like at the site.

  The repair invert 2 is formed with an annular first protrusion 12 that protrudes outward in the radial direction from the outer peripheral surface of the repair invert 2. The 1st protrusion part 12 is formed in the substantially triangular shape by sectional view. The diameter of the repair invert 2 including the first projecting portion 12 is smaller than the inner diameter of the cylindrical portion 52. This makes it difficult for the repair invert 2 to come into contact with the inner peripheral surface of the cylindrical portion 52 when the repair invert 2 is inserted. By providing the 1st protrusion part 12, it becomes easy to match | combine the center axis | shaft of the cylinder part 52 and the center axis | shaft of the 1st hole part 10 of the repair invert 2, and what is called centering effect can be acquired. Further, compared to the case where the first protrusion 12 is not provided, the possibility of the outer peripheral portion of the repair invert 2 excluding the first protrusion 12 contacting the inner peripheral surface of the cylindrical portion 52 at the time of insertion can be reduced. Can be easily inserted into the cylindrical portion 52. Of the upper surface of the repair invert 2, the outer peripheral portion 13 of the first hole 10 is formed horizontally. The repair invert 2 includes an annular convex portion 14. The convex portion 14 is coaxial with the first hole portion 10 and is formed outside the outer peripheral portion 13 in the radial direction of the first hole portion 10. As shown in FIG. 1, when the repair ring 3 is stacked on the repair invert 2, the convex portion 14 is fitted into the concave portion 22 of the repair ring 3 a. The convex portion 14 is formed in a tapered shape that tapers toward the upper side in the installed state. Specifically, the convex portion 14 can be formed in a trapezoidal cross section, for example. Further, the repair invert 2 includes an annular inclined lower surface 2a having substantially the same inclination as the first inclined upper surface 55a1 and the second inclined upper surface 55b1 described above. The inclined lower surface 2a is formed to be inclined so that the thickness of the repair invert 2 in the direction of the arrow D1 increases toward the first hole 10. The inclined lower surface 2a of the repair invert 2 is in contact with the first inclined upper surface 55a1 and the second inclined upper surface 55b1.

  The strength of the repair invert 2 is preferably higher than the strength of the repair ring 3. As a material of the repair invert 2, for example, a composite resin can be used. Thereby, in the repair invert 2, a space | gap can be decreased and a load resistance can be enlarged. Thereby, even if the repair ring 3 is stacked on the repair invert 2, the durability of the repair invert 2 can be suppressed from decreasing. Moreover, as a material of the repair ring 3, foamed resin can be used, for example. More specifically, a polypropylene resin can be used as the material of the repair ring 3. However, the material of the repair invert 2 and the repair ring 3 is not limited to the above.

  Next, the repair ring 3 will be described. As shown in FIG. 1, the repair ring 3 is stacked on the repair invert 2. When one repair ring 3 is used, the repair ring 3 is stacked on the repair invert 2. On the other hand, as shown in FIG. 1, for example, when two repair rings 3a and 3b are used, the repair ring 3a is stacked on the repair invert 2, and the repair ring 3b is stacked on the repair ring 3a. And the standing pipe 4 is hold | maintained in the state which protruded partially from the upper end 52a of the cylinder part 52 by the repair ring 3b located in the top.

  Since the repair rings 3a and 3b have the same structure, only the repair ring 3a will be described below. The repair ring 3a is formed by resin molding. If resin is used, it will be easy to mold. As shown in FIG. 1, the repair ring 3 a may have an outer shape along the inner peripheral surface of the cylindrical portion 52. The repair ring 3a is formed in an annular shape. The thickness of the repair ring 3a may be thin. Specifically, the thickness of the repair ring 3 a may be thinner than the thickness of the cylindrical portion 52. The repair ring 3 a is formed smaller than the inner diameter of the cylindrical portion 52. As shown in FIGS. 4A and 4B, a second hole 20 is formed in the center of the repair ring 3a. In a state where the repair ring 3a is stacked on the repair invert 2, the first hole 10 of the repair invert 2 and the second hole 20 of the repair ring 3a are substantially flush with each other.

  An annular second protrusion 21 is formed on the outer peripheral surface of the repair ring 3a. The 2nd protrusion part 21 is formed in the substantially triangular shape by the cross sectional view. The diameter of the repair ring 3 a including the second projecting portion 21 is slightly smaller than the inner diameter of the cylindrical portion 52. This makes it difficult for the repair ring 3 a to contact the inner wall of the cylindrical portion 52 when the repair ring 3 a is inserted. By providing the second projecting portion 21, it becomes easy to align the central axis of the cylindrical portion 52 and the central axis of the second hole portion 20 of the repair ring 3a, and a so-called centering effect can be obtained. Further, compared to the case where the second protrusion 21 is not provided, the possibility that the outer peripheral portion of the repair ring 3a excluding the second protrusion 21 contacts the inner peripheral surface of the cylindrical portion 52 at the time of insertion can be reduced. Can be easily inserted into the cylindrical portion 52. Further, the repair ring 3 a includes an annular recess 22 coaxially with the second hole 20. The concave portion 22 is formed at a predetermined distance from the second hole portion 20 in the radial direction of the second hole portion 20 so that the convex portion 14 of the repair invert 2 is fitted. The concave portion 22 is formed in a tapered shape that tapers toward the upper side in FIG.

  Of the upper surface of the repair ring 3a, the outer peripheral portion 23 of the second hole 20 is formed horizontally. The repair ring 3 a includes an annular convex portion 24. The convex portion 24 is coaxial with the second hole portion 20 and is formed outside the outer peripheral portion 23 in the radial direction of the second hole portion 20. The convex part 24 is formed in a tapered shape that tapers toward the upper side in the installed state. Specifically, the convex part 24 can be formed in a trapezoidal cross section, for example. When the repair ring 3b is stacked on the repair ring 3a, the convex portion 24 of the repair ring 3a is fitted into the concave portion 22 of the repair ring 3b. In a state where the repair ring 3b is stacked on the repair ring 3a, the second hole 20 of the repair ring 3a and the second hole 20 of the repair ring 3b are substantially flush with each other.

  The vertical pipe 4 is installed on the outer peripheral portion 23 of the repair ring 3b located at the top. The vertical pipe 4 includes a pipe line 30. The pipe line 30 of the vertical pipe 4 is arranged coaxially with the first hole 10 of the repair invert 2 and the second hole 20 of the repair ring 3. The pipe line 30 of the vertical pipe 4 is substantially flush with the first hole 10 and the second hole 20. Here, as shown in FIG. 1, an annular member 25 is provided between the standpipe 4 and the repair ring 3b. Specifically, the annular member 25 is provided in contact with the standpipe 4 and the convex portion 24 of the repair ring 3b. The annular member 25 prevents the mortar 6 from entering the pipe line 30 and the second hole part 20 from the gap between the vertical pipe 4 and the outer peripheral part 23 of the repair ring 3b. Further, the annular member 25 suppresses the backlash of the vertical pipe 4 in the radial direction, and the vertical pipe 4 is stably held. As the annular member 25, for example, a foam ring can be used. The vertical pipe 4 includes an upper opening 4a. The upper opening 4 a of the vertical tube 4 is closed by the inner lid 8.

  As shown in FIG. 1, the seal ring 5 has flexibility. The seal ring 5 is, for example, a foam ring. The seal ring 5 is provided in contact with the upper end outer edge 35 of the uppermost repair ring 3 b and the inner peripheral surface of the cylindrical portion 52. Thereby, the clearance between the upper end outer edge 35 of the repair ring 3 b and the inner peripheral surface of the cylindrical portion 52 is closed by the seal ring 5. Thereby, it is possible to prevent the mortar 6 from drooping before being cured.

  In the present embodiment, mortar 6 can be used as the filler. The mortar 6 is filled in the cylindrical portion 52. Specifically, the mortar 6 contacts the seal ring 5 and fills the space in the cylindrical portion 52 above the seal ring 5. More specifically, the mortar 6 is filled in a space partitioned by the inner peripheral surface of the cylindrical portion 52, the seal ring 5, the repair ring 3 b, and the standing pipe 4. The mortar 6 is filled so that the upper surface of the mortar 6 is substantially flush with the upper end 52 a of the cylindrical portion 52.

  The inner lid 8 closes the upper opening 4 a of the standpipe 4. The inner lid 8 can be attached to and detached from the upper opening 4 a of the standpipe 4. When cleaning and inspecting the invert 55 and the invert channel 56, the inner lid 8 can be removed and the upper opening 4a can be opened. When the cleaning of the invert 55 and the invert channel 56 is completed, the upper opening 4 a is closed again by the inner lid 8. In addition, since the upper opening part 4a of the standing pipe 4 can also be covered with the below-mentioned protective cover 7, the inner cover 8 is not necessarily a required member.

  An annular pedestal 31 is provided across the upper surface of the mortar 6 and the upper end 52 a of the cylindrical portion 52. A hole 33 is formed in the center of the base 31. Part of the standpipe 4 is inserted into the hole 33 of the base 31. An annular groove 32 is formed in the upper part of the base 31. The protective lid 7 is made of metal. The protective lid 7 includes a circular main body portion 7a in plan view and an annular flange portion 7b formed at a lower portion of the main body portion 7a. The inner lid 8 is covered with the protective lid 7 by installing the flange portion 7 b of the protective lid 7 in the groove portion 32. When the inner lid 8 is not provided, the upper opening 4 a of the standpipe 4 is covered with the protective lid 7.

  Next, a procedure for repairing the cylindrical portion 52 using the repair member 1 will be described. FIGS. 5A to 5D and FIGS. 6A to 6C are diagrams showing a repair procedure. Here, as shown to Fig.5 (a), the location A of the cylinder part 52 shall be damaged. Hereinafter, this A is referred to as a damaged portion. This damage is caused by, for example, erosion caused by corrosive gas or deposits due to long-term use, or is caused by ground subsidence or fatigue due to a load from the ground. If the cylindrical portion 52 is damaged in this way, the drainage in the cylindrical portion 52 may leak to the outside, or external water may enter the cylindrical portion 52, so the cylindrical portion 52 is repaired by the repair member 1. .

  First, after removing the lid 54 and the upper member 53 from the state of FIG. 2B described above, the repair invert 2 is inserted into the cylindrical portion 52 as shown in FIG. In this case, the repair invert 2 is inserted so as to be separated from the inner peripheral surface of the cylindrical portion 52. The repair invert 2 may be inserted so that the center axis of the repair invert 2 and the center axis of the cylindrical portion 52 overlap. At this time, the repair invert 2 is disposed on the invert 55 such that the cutout portion 11 is positioned above the invert flow path 56 and straddles the invert flow path 56.

  Next, as shown in FIG. 5B, one or a plurality of repair rings 3 are inserted into the cylindrical portion 52. What is necessary is just to determine the number of the repair rings 3 according to the height position of the broken part A of the cylinder part 52. FIG. For example, when the damaged portion A is above the cylindrical portion 52, a plurality of repair rings 3 may be stacked on the repair invert 2. On the other hand, when the damaged portion A is at the lower portion of the cylindrical portion 52, one repair ring 3 may be stacked on the repair invert 2. Thus, the repair ring 3 has a function of adjusting the repair height according to the height position of the damaged portion A of the cylindrical portion 52. The repair ring 3a may be inserted so that the center axis of the repair invert 2 and the center axis of the repair ring 3a overlap. In this case, the convex portion 14 of the repair invert 2 is fitted into the concave portion 22 of the repair ring 3a. At this time, the first hole 10 of the repair invert 2 and the second hole 20 of the repair ring 3a are substantially flush. When the repair ring 3b is stacked on the repair ring 3a, as shown in FIG. 5C, the repair ring 3b is repaired so that the center axis of the repair ring 3a and the center axis of the repair ring 3b overlap. Stack it on top. In this case, the convex portion 24 of the repair ring 3a is fitted into the concave portion 22 of the repair ring 3b. At this time, the second hole 20 of the repair ring 3a and the second hole 20 of the repair ring 3b are substantially flush.

  Next, as shown in FIG.5 (c), the standing pipe 4 is installed on the outer peripheral part 23 of the repair ring 3b located in the top. The standpipe 4 may be installed so that the center axis of the standpipe 4 and the center axis of the repair ring 3b overlap. At this time, the pipe line 30 of the standing pipe 4 and the second hole 20 of the repair ring 3b are substantially flush. As described above, the first hole 10 of the repair invert 2, the second hole 20 of the repair ring 3a, the second hole 20 of the repair ring 3b, and the pipe line 30 of the standing pipe 4 are substantially flush with each other. It has become. Thereby, when various tools for maintenance are inserted from the ground, the tools are less likely to be caught in the first hole 10, the second hole 20, and the pipeline 30. The width of the outer peripheral portion 23 of the repair ring 3b and the thickness of the vertical tube 4 are substantially the same. A thickness portion of the vertical tube 4 is arranged on the outer peripheral portion 23. Here, after installing the standpipe 4, the annular member 25 is provided so that the standpipe 4 and the convex part 24 of the repair ring 3b may be contacted. Specifically, since the convex portion 24 of the repair ring 3b is tapered as it goes upward in FIG. 5C as described above, the vertical tube 4 and the convex portion 24 of the repair ring 3b There is a gap between them. An annular member 25 is provided in this gap.

  Next, as shown in FIG. 5 (d), the seal ring 5 is inserted into the cylindrical portion 52. Specifically, the seal ring 5 is installed so as to come into contact with the upper end outer edge 35 of the repair ring 3 b located at the top of the repair ring 3 and the inner peripheral surface of the cylindrical portion 52. At this time, the seal ring 5 is damaged in the axial direction of the cylindrical portion 52 in order to close the damaged portion A of the cylindrical portion 52 with the mortar 6 (see FIG. 6A) filled in the cylindrical portion 52 in a later process. It is installed so as to be positioned below A. The seal ring 5 is preferably installed in a state where it is slightly compressed toward the inside in the radial direction, that is, in a state where the restoring force of the seal ring 5 acts on the outside in the radial direction. Thereby, the adhesiveness of the seal ring 5 and the internal peripheral surface of the cylinder part 52 can be improved. Thereby, the gap between the repair ring 3 b and the inner peripheral surface of the cylindrical portion 52 is reliably closed by the seal ring 5. This prevents the mortar 6 (see FIG. 6A) filled in the cylindrical part 52 from entering the lower part in the cylindrical part 52 in a subsequent process.

  Subsequently, as shown in FIG. 6A, the mortar 6 is filled into a space partitioned by the inner peripheral surface of the cylindrical portion 52, the seal ring 5, the repair ring 3 b, and the standing pipe 4. The upper surface of the mortar 6 is substantially flush with the upper end 52 a of the cylindrical portion 52. The space may be filled with a liquid curable injecting material before filling with the mortar 6. Thereby, even if there is a gap between the inner peripheral surface of the cylindrical portion 52 and the seal ring 5 or between the seal ring 5 and the repair ring 3b, the gap is filled with the curable injection material. Thereby, it is possible to prevent the mortar 6 or water from leaking between the inner peripheral surface of the cylindrical portion 52 and the seal ring 5 and between the seal ring 5 and the repair ring 3b.

  Next, as shown in FIG. 6B, after the mortar 6 is cured, an annular pedestal 31 is installed across the upper surface of the mortar 6 and the upper end 52 a of the cylindrical portion 52. At this time, the pedestal 31 is installed so that the outer peripheral portion of the pedestal 31 protrudes from the outermost line of the upper end 52a of the cylindrical portion. The pedestal 31 is installed in a state where a part of the standpipe 4 is inserted into the hole 33.

  Next, as shown in FIG. 6C, first, the inner lid 8 is installed so as to close the upper opening 4 a of the standpipe 4. Subsequently, the protective lid 7 is installed so that the collar portion 7 b of the protective lid 7 fits into the groove portion 32 of the pedestal 31. As a result, the inner lid 8 and the protective lid 7 can double cover the upper opening 4a. In addition, as shown in FIG. 1, the upper surface of the protective cover 7 and the ground are substantially flush. After the installation of the protective lid 7 is completed, the base 31 is filled with soil or the like (not shown). As described above, the repair of the damaged portion A of the cylindrical portion 52 is completed.

  As described above, in this embodiment, the space in the cylindrical portion 52 that is in contact with the seal ring 5 and above the seal ring 5, that is, the inner peripheral surface of the cylindrical portion 52, the seal ring 5, and the repair ring 3b. Since the mortar 6 is filled in the space partitioned by the vertical pipe 4, it is possible to easily repair the inner peripheral surface of the cylindrical portion 52 by closing the damaged portion or the deteriorated portion of the cylindrical portion 52 with the mortar 6. it can. Accordingly, the drainage flowing through the cylindrical portion 52 is prevented from leaking to the outside, and water outside the cylindrical portion 52 is prevented from entering the cylindrical portion 52 from the damaged portion. It is also possible to prevent a tree root or the like outside the cylindrical portion 52 from entering the cylindrical portion 52 from the damaged portion. Further, when the damaged portion is generated at a high position of the cylindrical portion 52, the number of the repair rings 3 is increased, the seal ring 5 is provided at a high position, and the mortar 6 is filled. On the other hand, when the damaged portion is generated at a low position of the cylindrical portion 52, the number of the repair rings 3 is reduced, the seal ring 5 is provided at the low position, and the mortar 6 is filled. Thereby, the said cylinder part 52 can be easily repaired irrespective of the broken location and degradation location of the cylinder part 52. FIG.

  Further, according to the present embodiment, the seal ring 5 is provided in contact with the upper end outer edge 35 of the repair ring 3b located at the top and the inner peripheral surface of the cylindrical portion 52. Thereby, when the seal ring 5 is provided in contact with the inner peripheral surface of the repair invert 2 and the cylindrical portion 52, or the repair ring 3 different from the uppermost repair ring 3b and the inner peripheral surface of the cylindrical portion 52 are contacted. The filling amount of the mortar 6 can be reduced as compared with the case where the mortar 6 is provided. Thereby, the construction period can be shortened.

  Further, according to the present embodiment, the repair invert 2 includes the inclined lower surface 2a having the same inclination as the first inclined upper surface 55a1 of the first invert forming portion 55a and the second inclined upper surface 55b1 of the second invert forming portion 55b. . Thereby, the adhesiveness of the repair invert 2 with respect to the invert 55 can be improved. As a result, the repair invert 2 is stably supported by the invert 55. In particular, when one or a plurality of repair rings 3 are stacked on the repair invert 2, it is more desirable to adopt this mode.

  Further, according to the present embodiment, the cutout portion 11 is disposed on the invert channel 56 in a state where the repair invert 2 is inserted. Thereby, interference of the repair invert 2 with respect to the invert flow path 56 and the flow path above it can be eliminated. That is, the repair invert 2 can be arranged so as not to block the invert flow path 56 and the flow path above it.

  Moreover, according to this embodiment, the outer peripheral part 13 of the 1st hole 10 is horizontally formed among the upper surfaces of the repair invert 2. As shown in FIG. Thereby, the repair ring 3a can be supported stably.

  Further, according to the present embodiment, the convex portion 14 of the repair invert 2 is fitted into the concave portion 22 of the repair ring 3. As a result, the repair ring 3 can be stably stacked on the repair invert 2. Moreover, since the misalignment of the repair ring 3 with respect to the repair invert 2 can be prevented, the first hole portion 10 of the repair invert 2 and the second hole portion 20 of the repair ring 3 can be substantially flush with each other.

  Further, according to the present embodiment, the convex portion 14 of the repair invert 2 is formed outside the outer peripheral portion 13 in the radial direction of the first hole portion 10. Thereby, the convex part 14 can be formed outside the outer peripheral part 13 while forming the first hole 10 inside the outer peripheral part 13.

  Further, according to the present embodiment, the concave portion 22 of the repair ring 3 has a predetermined distance outward from the second hole portion 20 in the radial direction of the second hole portion 20 so that the convex portion 14 of the repair invert 2 is fitted. They are spaced apart. Thereby, the recessed part 22 of the repair ring 3 can be formed in the position where the convex part 14 of the repair invert 2 fits.

  Further, according to the present embodiment, the annular convex portion 24 is formed on the repair ring 3 at the same distance as the predetermined distance outward from the second hole 20 in the radial direction of the second hole 20. Has been. In this configuration, when another repair ring 3 is stacked on the repair ring 3, the convex portion 24 of the repair ring 3 can be fitted into the concave portion 22 of another repair ring 3. Thereby, another repair ring 3 can be stably stacked on the repair ring 3. Further, since the misalignment of another repair ring 3 with respect to the repair ring 3 can be prevented, the second hole 20 of the repair ring 3 and the second hole 20 of the other repair ring 3 are substantially flush with each other. Can be.

  Further, according to the present embodiment, the convex portion 14 of the repair invert 2 and the concave portion 22 and the convex portion 24 of the repair ring 3 taper toward the upper side in a state where the repair invert 2 and the repair ring 3 are installed. It is formed in a taper shape. Thereby, the repair ring 3 can be easily stacked on the repair invert 2, and the repair ring 3 can be easily detached from the repair invert 2. In addition, another repair ring 3 can be easily stacked on the repair ring 3, and another repair ring 3 can be easily detached from the repair ring 3.

  Moreover, according to this embodiment, the outer peripheral part 23 of the 2nd hole 20 is horizontally formed among the upper surfaces of the repair ring 3b, and the standing pipe 4 is installed on the outer peripheral part 23 of the repair ring 3b. Thereby, it is possible to stably install the vertical pipe 4 while preventing it from rolling.

  Further, according to the present embodiment, the pedestal 31 is disposed over the mortar 6 and the upper end 52 a of the cylindrical portion 52. Thereby, the pressure due to the load of the protective lid 7 can be distributed to the mortar 6 and the upper end 52 a of the cylindrical portion 52. Accordingly, even when the protective lid 7 is installed on a road with many roads, the pressure from the protective lid 7 is dispersed, so the mortar 6 and the repair invert 2 or the repair ring 3 provided below the mortar 6. Can be reduced. Therefore, the usable period of the mortar 6, the repair invert 2, and the repair ring 3 can be extended. Further, by installing the pedestal 31 so that the outer peripheral portion of the pedestal 31 protrudes from the outermost line of the upper end 52a of the cylindrical portion, not only the pressure applied to the repair member 1 from the ground is distributed to the cylindrical portion 52 but also the cylinder. It can also be dispersed in the soil around the part 52.

  Although the repair member 1 according to the first embodiment has been described above, the repair member according to the present invention is not limited to that of the first embodiment, and can be implemented in various other forms. Hereinafter, the second embodiment will be briefly described. In the following description, the same reference numerals are used for the same components as those already described, and the description thereof is omitted.

  As shown in FIG. 7, the repair member 1 a of the second embodiment is different from the repair member 1 of the first embodiment in the arrangement position of the seal ring 5 and the shape of the base 31. The seal ring 5 can be provided in contact with the first protrusion 12 of the repair invert 2, the inner peripheral surface of the cylindrical portion 52, and the outer peripheral surface of the repair ring 3a. In this case, the seal ring 5 is provided between the first protrusion 12 and the second protrusion 21 of the repair ring 3a. As a result, the seal ring 5 can be prevented from falling and floating. That is, the first protrusion 12 serves as a stopper for preventing the seal ring 5 from slipping downward. The pedestal 31 is disposed on the mortar 6. That is, the pedestal 31 is installed inside the outermost line of the mortar 6, that is, the boundary line between the mortar 6 and the cylindrical portion 52. In places where there are not many roads, that is, places where people and bicycles pass, the pressure is not applied to the protective lid 7 as compared to places where there are many roads. Thus, in 1st Embodiment, the repair member 1 can be installed in the place etc. where a vehicle passes, and in 2nd Embodiment, the repair member 1a can be installed in the place where a person and a bicycle pass. Therefore, the repair members 1 and 1a can be used flexibly according to the application. As a repair procedure, the seal ring 5 is disposed on the first protrusion 12 of the repair invert 2, and then one or more repair rings 3 are stacked on the repair invert 2. Thereafter, the standpipe 4, the mortar 6, the pedestal 31, the inner lid 8 and the protective lid 7 are arranged in this order.

  Although the first embodiment and the second embodiment have been described above, the following modification may be further adopted.

  In the said embodiment, although mortar was used as a filler, it is not limited to this. Instead of mortar, other materials such as concrete may be filled. In this case, the cost of concrete can be reduced compared to mortar.

  In the above embodiment, the inner lid 8 is attached after the pedestal 31 is installed, but the present invention is not limited to this. The inner lid 8 may be attached after the standpipe 4 is installed and before the pedestal 31 is installed.

  In the above embodiment, the seal ring 5 is provided in contact with the upper outer edge 35 of the repair ring 3b positioned at the top of the plurality of repair rings 3 and the inner peripheral surface of the cylinder portion 52, or around the repair invert 2 and the cylinder Although provided in contact with the inner peripheral surface of the portion 52, the present invention is not limited to this. For example, the seal ring 5 may be provided in contact with the periphery of the repair ring 3 a and the inner peripheral surface of the cylindrical portion 52.

  In the above embodiment, the repairing member 1 is used to repair the cylindrical portion 52 that is an existing pipeline of the underground drainage facility 100. However, the existing pipeline to be repaired is not limited to the cylindrical portion 52. For example, the existing pipeline to be repaired may be a pipe extending in the horizontal direction or a pipe inclined from the horizontal direction. For example, the existing pipe line to be repaired may be an existing pipe that extends laterally, such as an inflow pipe or an outflow pipe that is increasingly connected.

  In the said embodiment, the convex part 14 of the repair invert 2, and the recessed part 22 of the repair ring 3 fitted to this, and the convex part 24 of the repair ring 3, and the recessed part 22 of another repair ring 3 fitted to this, respectively. Although it is annular, it is not limited to this. For example, these may be arcuate in a plan view, or may be other shapes such as a circle or a rectangle in a plan view.

  In the above embodiment, only the repair invert 2 is provided with the first projecting portion 12 on the outer edge of the upper end of the repair invert 2, but the present invention is not limited to this. A protrusion may be provided on the upper edge 35 of the repair ring 3. In this case, the seal ring 5 can be provided in contact with the protruding portion of the repair ring 3 and the inner peripheral surface of the cylindrical portion 52.

  In the above embodiment, the repair ring 3 is provided coaxially with the repair invert 2 and the standpipe 4 is provided coaxially with the repair ring 3, but the present invention is not limited to this. If the first hole 10 of the repair invert 2, the second hole 20 of the repair ring 3, and the pipe line 30 of the standing pipe 4 are communicated with each other, these need not be provided coaxially.

DESCRIPTION OF SYMBOLS 1 Repair member 2 Repair invert 3 Repair ring 4 Stand pipe 4a Upper opening part (stand pipe opening part)
5 Seal ring (seal member)
6 Mortar (filler)
7 Protective lid (lid)
8 Inner lid 35 Upper edge of repair ring 50 50 52 Tube 100 Underground drainage facility

Claims (14)

A cylindrical portion having an opening on the upper side and having an inflow port and an outflow port on the side, and a long groove-shaped invert channel formed inside the tubular portion and provided from the inflow port toward the outflow port. A repair member for repairing a manhole or a burial buried in the ground and having a formed invert,
It is formed in an annular shape, has a first hole in the center, has an outer diameter smaller than the inner diameter of the cylinder, and is formed in the cylinder so that the first hole is positioned on the invert channel. Repair invert inserted,
The repair invert is formed in a ring shape, has a second hole portion in the center, has an outer diameter smaller than an inner diameter of the cylindrical portion, and the second hole portion is positioned on the first hole portion. One or more repair rings stacked on top of each other;
The uppermost one of the one or the plurality of repair rings has an upright opening, has a pipe leading to the upright opening, and is positioned above the second hole. A standpipe installed on a repair ring located at
Possible to be provided in contact with the periphery of any one of the one or more repair rings and the inner peripheral surface of the cylindrical portion, or in contact with the periphery of the repair invert and the inner peripheral surface of the cylindrical portion. An annular sealing member having flexibility;
A filler that is in contact with the seal member and is filled in a space in the cylindrical portion above the seal member;
A cylindrical member repairing member, comprising: a lid that is provided above the filler and partially exposed to the ground, and that covers the upright opening.   The cylindrical member repair member according to claim 1, wherein the seal member is provided in contact with an upper end outer edge of the uppermost repair ring and an inner peripheral surface of the cylindrical portion. The invert includes a first invert forming portion and a second invert forming portion disposed on both sides of the invert channel while supporting the repair invert,
The first invert forming part has an inclined upper surface whose height decreases toward the invert channel,
The second invert formation portion has an inclined upper surface whose height decreases toward the invert flow path,
The repair invert contacts the inclined upper surface of the first invert forming portion and the inclined upper surface of the second invert forming portion, and the inclined upper surface of the first invert forming portion and the inclined of the second invert forming portion. The cylindrical member repair member according to claim 1, comprising an inclined lower surface having the same inclination as the upper surface. The repair invert is provided with a cutout portion that is formed in a semicircular shape in a side view by cutting out the outer peripheral surface of the repair invert in the radial direction
4. The cylindrical member repair member according to claim 1, wherein the notch is disposed on the invert channel. 5.   The repair member of the cylinder part of any one of Claims 1-4 in which the outer peripheral part of the said 1st hole part is horizontally formed among the upper surfaces of the said repair invert. A first protrusion formed on the repair invert;
A recess formed in the lower part of the repair ring, and
The cylindrical member repair member according to claim 5, wherein the first convex portion of the repair invert is fitted into the concave portion of the repair ring.   The cylinder portion repair member according to claim 6, wherein the first convex portion of the repair invert is formed outside the outer peripheral portion in a radial direction of the first hole portion.   The concave portion of the repair ring is formed a predetermined distance away from the second hole portion in the radial direction of the second hole portion so that the first convex portion of the repair invert fits. The cylindrical member repair member according to claim 6 or 7. A second convex portion formed on the repair ring;
The cylindrical repair member according to claim 8, wherein the second convex portion is formed to be spaced apart from the second hole portion by the same distance as the predetermined distance in the radial direction of the second hole portion.   The first convex part of the repair invert, the concave part of the repair ring, and the second convex part are formed in a tapered shape that tapers upward as the repair invert and the repair ring are installed. The tubular member repair member according to claim 9.   The outer peripheral part of the said 2nd hole part is horizontally formed among the upper surfaces of the said repair ring, The said standing pipe is installed on the said outer peripheral part of the said repair ring, The any one of Claims 1-10. Repair part of the cylinder part as described in.   The cylindrical member repair member according to claim 1, further comprising an annular pedestal that supports the lid and is disposed over the filler and the upper end of the cylindrical portion. A cylindrical portion having an opening on the upper side and having an inflow port and an outflow port on the side, and a long groove-shaped invert channel formed inside the tubular portion and provided from the inflow port toward the outflow port. An underground drainage facility comprising a mast or manhole embedded in the ground and formed, and a repair member for repairing the mast or the manhole,
The repair member is
It is formed in an annular shape, has a first hole in the center, has an outer diameter smaller than the inner diameter of the cylinder, and is formed in the cylinder so that the first hole is positioned on the invert channel. Repair invert inserted,
The repair invert is formed in a ring shape, has a second hole portion in the center, has an outer diameter smaller than an inner diameter of the cylindrical portion, and the second hole portion is positioned on the first hole portion. One or more repair rings stacked on top of each other;
The uppermost one of the one or the plurality of repair rings has an upright opening, has a pipe leading to the upright opening, and is positioned above the second hole. A standpipe installed on a repair ring located at
Possible to be provided in contact with the periphery of any one of the one or more repair rings and the inner peripheral surface of the cylindrical portion, or in contact with the periphery of the repair invert and the inner peripheral surface of the cylindrical portion. An annular sealing member having flexibility;
A filler that is in contact with the seal member and is filled in a space in the cylindrical portion above the seal member;
An underground drainage facility comprising: a lid that is provided above the filler and partially exposed to the ground, and that covers the upright opening. A cylindrical portion having an opening on the upper side and having an inflow port and an outflow port on the side, and a long groove-shaped invert channel formed inside the tubular portion and provided from the inflow port toward the outflow port. A repair method for repairing a manhole or a burial buried in the ground and having a formed invert,
A repair invert formed in an annular shape, having a first hole in the center and having an outer diameter smaller than the inner diameter of the tube, and the tube so that the first hole is positioned on the invert channel. Inserting into the part;
One or a plurality of repair rings formed in an annular shape, having a second hole at the center and having an outer diameter smaller than the inner diameter of the cylindrical part, the second hole is positioned above the first hole. Stacking on the repair invert,
An annular sealing member having flexibility is brought into contact with the periphery of any one of the one or more repair rings and the inner peripheral surface of the tube portion, or the periphery of the repair invert and the tube portion Providing a contact with the inner peripheral surface;
A vertical pipe having a vertical pipe opening part and a pipe line leading to the vertical pipe opening part is arranged such that the pipe line is positioned above the second hole part. The process of installing on the repair ring located at the top,
A step of contacting the seal member and filling a filler in the space in the cylindrical portion above the seal member;
And a step of covering the riser opening by disposing the lid above the filler in a state where the lid is partially exposed on the ground.

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