JP2014188946A - Covering material for partial repair of existing pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a covering material for partial repair, enables cut-off performance to be maintained by preventing formation of a gap between the inner face of an existing pipe and a cylindrical part, even in the case of a deformed existing pipe.SOLUTION: A covering material 10 made of hardening resin for partial repair having cylindrical parts 12 and 14 for covering a repair target spot of an existing underground pipe from the inner side includes an elastic member 16 which covers the whole circumference of the outer peripheral surface of at least the marginal region of the cylindrical part and intervenes in a compressed state between the existing pipe and the cylindrical part in the covering state. The elastic member 16 has a void structure.

Description

  The present invention relates to a partial repair covering for covering and repairing an inner surface of an existing pipe buried in the ground.

  Sewage pipes deteriorate with long-term use, and their useful life is generally about 50 years. Therefore, the number of sewer pipes exceeding the useful life is increasing year by year. Aged sewer pipes are deformed, cracked, etc., and not only the drainage function of the sewage is lowered, but also the groundwater and earth and sand around the sewer pipes flow into the sewer pipes, creating cavities in the ground. It also causes depression. In addition, sewage pipes buried in the ground may be easily affected by ground fluctuations such as earthquakes, and at present, some kind of repair is required at a predetermined time.

  There are two types of repair methods for sewage pipes: full repair (span repair) that repairs the entire sewage pipe installed between manholes, and partial repairs that partially repair cracks and breakage at specific locations. In general, overall repair is adopted when the entire sewer pipe is aged and there are many damaged parts, and the strength is reduced.Partial repair is partly cracked or broken, although the strength of the sewer pipe itself is at a certain level. It is used when the water is leaked or leaked at the joint between structural unit pipes such as a fume pipe constituting the sewer pipe, and the surrounding groundwater or earth and sand flows into the sewer pipe.

  As a method of partially repairing a sewer pipe, a method of using a partial repair covering as described in Patent Documents 1 and 2 is known. The partial repair covering body described in FIG. 2 of Patent Document 1 is a covering body for partially repairing the connecting portion between the sewer main pipe and the mounting pipe, and a first tubular section covering the inner surface of the sewer main pipe, And a second cylindrical portion that covers the inner surface of the attachment tube, and the second cylindrical portion has a configuration that protrudes outward from the outer peripheral surface of the first cylindrical portion. After this repair covering body is disposed at a predetermined position in the sewer pipe, partial repair is performed by curing the curable resin, which is a material, in close contact with the sewer pipe and the attachment pipe.

  However, in such a partial repair method, since the resin-made repair coating body undergoes curing shrinkage, there is a problem that a slight gap is generated between the existing pipe and the repair pipe after the repair work. This gap increases as the diameter of the existing pipe to be repaired increases. However, if such a gap exists, groundwater and earth and sand will flow into the pipe through the existing pipe and the repair pipe. As a result, it is difficult to obtain a complete repair effect.

  On the other hand, Patent Document 2 discloses a water stop method for a connecting portion between a sewer main and an attachment pipe. The rehabilitation repair material used in this construction method has a sleeve having a cylindrical portion and a cylindrical base disposed inside the sleeve, and the sleeve has an outer periphery in the circumferential direction on the outer periphery of the end portion. A ridge formed continuously from a water-swellable material is provided. Examples of water-swellable materials include elastic members such as ether polyurethane elastomers and isobutylene-maleic anhydride copolymers. According to this repair material for rehabilitation, even if hardening shrinkage of the rehabilitation pipe occurs, formation of a gap is prevented by the presence of the elastic member, and a sufficient water stop function can be secured.

Japanese Patent Laid-Open No. 10-225990, FIG. Japanese Patent No. 3476152, paragraph [0017] etc.

  By the way, it is known that an existing pipe buried in the ground is deformed due to the influence of ground earth pressure, ground fluctuation or the like. If the existing pipe is deformed after repair using an elastic member such as a water-swellable material as described above as the water-stopping material, the inner surface of the existing pipe is separated from the cylindrical portion provided with the elastic member, There is a problem that a gap is generated.

  The present invention has been made in view of such circumstances, and the purpose thereof is to prevent the formation of a gap between the inner surface of the existing pipe and the cylindrical portion even when the existing pipe is deformed, thereby preventing water from stopping. An object of the present invention is to provide a covering for partial repair capable of maintaining the above.

In order to solve the above-mentioned object, the covering for partial repair according to claim 1 is:
In a covering for partial repair made of a curable resin having a cylindrical portion for covering a repair target portion of an existing pipe buried in the ground from the inner surface,
An elastic member that covers at least the outer peripheral surface of the edge of the cylindrical portion over its entire circumference, and is interposed between the existing pipe and the cylindrical portion in the covered state; and The elastic member has a void structure.

  According to this configuration, since the elastic member is provided so as to be interposed between the existing pipe and the tubular portion in the installation state of the partial repair covering, the tubular portion is used in the operation of curing the tubular portion. Even if is hardened and shrunk, the space between the existing pipe and the cylindrical portion is filled with a compressed elastic member, and the formation of a gap between the existing pipe and the cylindrical portion at the installation stage is prevented.

  In addition, since the elastic member has a void structure, the compressibility is high and the restoring force is large accordingly, so that the existing pipe is deformed after the installation of the partial repair covering, and the cylindrical portion and the existing pipe inner surface are formed. Even if a situation occurs, the space between them is filled with the restored elastic member, so that the formation of a gap due to the deformation of the existing pipe can be prevented. Furthermore, even if the void structure of the elastic member has a water-permeable structure, the void structure is blocked by sediment particles flowing in from outside the existing pipe, resulting in water-stopping. Particles can be prevented from flowing in.

  The covering for partial repair according to claim 2 is characterized in that the elastic member is a closed cell foam. By using a closed-cell foam that does not transmit water as an elastic member, it is possible to easily ensure water blocking.

  The partial repair covering according to claim 3 is characterized in that a water-swellable rubber layer is provided outside the closed-cell foam. By providing the water-swellable rubber layer, even when the concave / convex shape is generated on the inner peripheral surface of the aged existing pipe, the water-swellable rubber follows the concave / convex shape and further exists in the existing pipe. Since it swells by reacting with water, it can prevent more effectively that a clearance gap arises between a cylindrical part and an existing pipe.

  The partial repair covering according to claim 4 is characterized in that the elastic member is a fiber material or an open-cell foam. In general, by using a fiber material or open cell foam having high compressibility and restoring force as an elastic member, it is easy to provide a covering for partial repair that can reliably prevent the formation of a gap between the existing pipe and the cylindrical portion. Can be built. Moreover, since the earth and sand particle | grains etc. which flow in from the existing pipe | tube after installation penetrate | invade into a fiber material or an open cell foam, a space | gap structure is obstruct | occluded, and it can also ensure a water stop without a problem.

  The covering for partial repair according to claim 5 is characterized in that the elastic member is formed of a water-swellable material. According to this configuration, since the water-swellable material forming the elastic member is expanded by the groundwater flowing in through the repair target portion after the partial repair covering is installed and the void structure is closed, As well as ensuring, the restoring force of the elastic member is increased by the expansion, so that the effect of preventing the formation of a gap is further improved.

  The partial repair covering according to claim 6 is characterized in that the outer surface layer of the elastic member contains organic or inorganic particles. According to this configuration, the compressed elastic member is in a state where the void structure is blocked by the organic or inorganic particles contained therein, so that the sediment particles can flow from outside the existing pipe after installation. Even without waiting, the water stoppage is secured from the beginning of installation.

  The partial repair covering according to claim 7 is characterized in that the particles are water-curable particles. According to this structure, after installing the covering for partial repair, the groundwater which flows in from the crack etc. of an existing pipe contacts with the water hardening particle | grains hardened | cured with water, and a hardening | curing material hardens | cures. Here, since the water curable particles are contained in the outer surface layer of the elastic member, the particles are cured in contact with the existing pipe inner surface.

  If it does so, since the existing pipe and the covering for partial repair provided with an elastic member will be firmly integrated, the strength as a pipe, ie, the repulsive force with respect to ground earth pressure etc., can be raised. Furthermore, since the water curable particles contained in the outer surface layer are cured, the water permeability of the elastic member is lost, so that it is possible to ensure water stopping without waiting for the inflow of earth and sand particles from outside the existing pipe.

  The partial repair covering according to claim 8 is characterized in that a waterproof film is provided outside the elastic member. According to this configuration, it is possible to obtain a repair structure having water-stopping properties from the beginning of installation without waiting for the void structure of the elastic member to be blocked by the earth and sand particles flowing into the existing pipe.

  The partial repair covering according to claim 9 is characterized in that a water-swellable rubber layer is provided on the outer side of the elastic member or further on the outer side when the water-stopping film is provided. To do. According to this configuration, similarly to the third aspect, even when the concave and convex shape is generated on the inner peripheral surface of the aged existing pipe, the water-swellable rubber follows the concave and convex shape, and further in the existing pipe. Since it swells by reacting with water present in the tube, it is possible to more effectively prevent a gap from being formed between the tubular portion and the existing tube.

  According to the present invention, in the partial repair of an existing pipe in which cracks or breakage has occurred, by using the partial repair covering, sufficient water-stopping is ensured even if the existing pipe is deformed after installation. The perfect repair structure that can be obtained. And according to this repair structure, it becomes possible to prevent formation of the cavity in the ground and the ground depression accompanying this.

It is a perspective view which shows an example of embodiment of the covering for partial repair of this invention. It is sectional drawing of the repair apparatus used in order to install the covering for partial repair. It is explanatory drawing at the time of installing the covering for partial repair using a repair apparatus. It is the elements on larger scale which show the state before (A) of hardening of the covering for partial repairs, after hardening (B), and after deformation of a sewer main (C). It is sectional drawing which shows the repair structure (a) after installation, and the repair structure (b) after a sewer main deformation | transformation. It is a perspective view which shows other embodiment of the coating body for partial repair of this invention.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an example of an embodiment of a covering for partial repair according to the present invention. In the present embodiment, a partial repair covering for repairing this portion will be described by taking a connecting portion between a sewer main pipe and a mounting pipe as an example of a repair target portion.

  As shown in the drawing, the partial repair covering 10 according to the present embodiment includes a first tubular portion 12 and a second tubular portion 14 that protrudes outward from the outer peripheral surface 12a of the first tubular portion 12. And have. The 1st cylindrical part 12 is corresponded to the site | part which coat | covers a sewer main pipe inner surface, and the 2nd cylindrical part 14 is equivalent to the site | part which coat | covers an attachment pipe inner surface.

  The elastic member 16 is provided in the circumferential direction so that the outer peripheral surface 12a may be covered over the outer periphery at the edge part of the both ends of the outer peripheral surface 12a of the 1st cylindrical part 12, respectively. The elastic member 16 is an elastic member having a fine void structure, and is interposed between the existing pipe and the cylindrical portions 12 and 14 in the installed state.

  As such an elastic member 16, a closed cell foam, a fiber material, an open cell foam, etc. can be used. Urethane foam or the like can be used as the closed cell foam and open cell foam, and a nonwoven fabric made of polyester or the like can be used as the fiber material.

  In the case where a closed cell foam is used as the elastic member 16, it is possible to easily ensure water blocking. When a fiber material or an open-cell foam is used as the elastic member 16, water stoppage is not obtained immediately after installation, but dirt and sand particles flowing from the outside of the existing pipe enter the void structure. Part or all of the structure is blocked, and water stoppage can be secured after the fact.

  The elastic member 16 is preferably formed from a water-swellable material that absorbs water and expands, and a water-swellable fiber material or a water-swellable foam can be particularly preferably used. As the water-swellable material, for example, a water-swellable polymer such as sodium polyacrylate can be used. By using an elastic member formed of a water-expandable material, the void structure of the elastic member is closed by reacting with water existing in the existing pipe, so that water-stopping property is easily ensured.

  Although not shown, it is preferable that a water-swellable rubber layer is provided on the outer side of the elastic member 16, that is, the surface in contact with the existing pipe. By providing the water-swellable rubber layer, even if the inner peripheral surface of the aged existing pipe has an uneven shape, the liquid water-swellable rubber follows the uneven shape, and further in the existing pipe. Since it swells by reacting with the water which exists, it can prevent more effectively that a clearance gap produces between the cylindrical parts 12 and 14 and an existing pipe | tube.

  As the water-swellable rubber, ether-based polyurethane elastomers, water-absorbing resins such as isobutylene-maleic anhydride, or mixtures of these water-absorbing resins with chloroprene rubber, natural rubber, and the like can be used.

  The thickness of the elastic member 16 varies depending on the diameter of the existing pipe to be repaired, but can be set as appropriate according to the assumed degree of deformation of the existing pipe. Specifically, it may be thicker than the assumed maximum width of the gap, for example, 3 to 10 mm in the uncompressed state and 1 to 3 mm in the compressed state.

  In the present embodiment, the elastic member 16 is provided on the edge of the outer peripheral surface 12 a of the first cylindrical portion 12 of the partial repair covering 10, and further provided on the outer peripheral surface of the second cylindrical portion 14. However, all of the outer peripheral surfaces of the first cylindrical portion 12 and the second cylindrical portion 14 may be covered with the elastic member 16. The axial length of the second cylindrical portion 14 may be longer than shown, and in that case, an elastic member is provided at least at the edge of the second cylindrical portion 14.

  As a member made of curable resin constituting the covering 10 for partial repair, those conventionally used can be used. For example, a substrate such as glass fiber impregnated with a photocurable resin composition or a thermosetting resin composition, and a protective film laminated on the inner surface or both surfaces as necessary can be used. The photocurable resin composition and the thermosetting resin composition may be those conventionally used.

  When the protective film is provided on the outer surface of the base material impregnated with the resin composition, the elastic member 16 may be provided on the outer peripheral surface of each of the cylindrical portions 12 and 14 by, for example, bonding with an adhesive. it can. On the other hand, when the protective film is provided only on the inner surface of the base material impregnated with the resin composition and is not provided on the outer surface, the elastic member 16 is prevented from penetrating into the elastic member 16. The elastic member 16 can be provided by providing an intervening film such as a polyethylene film on the inner side, applying an adhesive on the inner side surface of the film, and sticking it to the cylindrical portions 12 and 14.

  In order to repair an existing pipe using the covering for partial repair according to the present invention, it can be performed by a method similar to the conventional method. For example, the covering for partial repair can be installed at a predetermined position in the sewer pipe using the repairing device 60 shown in FIG.

  This repairing device 60 has a sewer main tubular portion 62 made of a rubber material that can be expanded and contracted in the radial direction, and a radially intermediate portion of the sewer main tubular portion 62 in the axial direction intermediate portion of the sewer main tubular portion 62. The main part is composed of a tubular part 64 for an attachment pipe made of an inflatable / shrinkable rubber material that protrudes in a T-shape or a T-shape. Are sealed with a pair of side lids 66 at both ends, and a fluid introduction pipe 68 for sending compressed air in and out is provided inside the tubular section 62 for the sewer main pipe and the tubular section for the mounting pipe, and the repair device 60. It has traveling means 69 that can move itself.

  The sewer main tubular portion 62 holds the first tubular portion 12 of the partial repair covering 10 around the outer peripheral portion thereof, and the mounting pipe tubular portion 64 holds the second tubular portion 14. It is the structure hold | maintained in the state wound around the outer peripheral part.

  The operation of covering the inner surface of the existing pipe with the partial repair covering 10 will be described with reference to FIG. 3. First, the repair device 60 holding the partial repair covering 10 as described above is wired from the end of the sewer main pipe 72 (FIG. It is pulled in by traction (not shown) and moved to a predetermined repair location. At this time, both the sewer main tubular portion 62 and the attachment pipe tubular portion 64 are not supplied with compressed air, and in particular, the sewer main tubular portion 62 is in a state of buckling in the radial direction. The second tubular portion 14 loosely fitted in the mounting pipe tubular portion 64 is retracted within the range of the inner diameter of the sewer main pipe 72, and the repair device 60 that covers the partial repair covering 10 is obstructed. It can run in the sewer main 72 without.

  After reaching the repair location, the axis of the tubular portion 64 for the attachment pipe is aligned with the axis of the attachment pipe 74, and then compressed through the fluid introduction pipe 68 into the tubular portion 62 for the sewer main pipe and the tubular portion 64 for the attachment pipe. Air is supplied so that the internal atmospheric pressure becomes, for example, 0.3 to 1 MPa, and these are expanded, and the first cylindrical portion 12 and the second cylindrical portion 14 are respectively attached to the inner surfaces of the sewer main pipe 72 and the attachment pipe 74. Crimp. When crimped, the outer peripheral surfaces of the first cylindrical portion 12 and the second cylindrical portion 14 where the elastic member 16 is not provided are in close contact with the inner peripheral surfaces of the sewer main pipe 72 and the mounting pipe 74, and the elastic member 16 Compressed state. Subsequently, the resin composition of the 1st cylindrical part 12 and the 2nd cylindrical part 14 is hardened by light irradiation or heating with the light irradiation means or heating means (not shown) provided in the repair apparatus 60 inside. . Although the first cylindrical portion 12 and the second cylindrical portion 14 are slightly shrunk from the state where the diameter is expanded to the maximum by this curing, the elastic member 16 is restored from the compressed state, so that a gap is formed in the curing stage. Is prevented. Then, after light irradiation or heating is finished, the first tubular portion 12 and the second tubular portion 14 are cooled by natural cooling or sending cool air, etc., and then the sewer main tubular portion 62 and the mounting tubular portion. The compressed air inside 64 is discharged and the repair device 60 is removed. Thereby, the inner surface area | region of the connection part vicinity of the sewer main pipe 72 and the attachment pipe 74 is coat | covered with the covering 10 for partial repair. The light irradiating means of the repair device 60 can be configured by installing a light irradiating lamp therein, and the heating means is for expanding the tubular portion 62 for the sewer main pipe and the tubular portion 64 for the attachment pipe. Steam can be used as the fluid, or a heating infrared lamp or the like can be installed inside the repair device 60.

  In the partial repair structure formed by the above method, the elastic member 16 is provided so as to be interposed between the sewer main pipe 72 and the attachment pipe 74 and the cylindrical portions 12 and 24. Even if the cylindrical portions 12 and 14 are cured and contracted, the elastic member 16 fills the space between the sewer main pipe 72 and the attachment pipe 74 and the partial repair covering 10 by the restoring force of the elastic member 16. Therefore, formation of a gap can be prevented. That is, as shown in FIG. 4A, which is a state before the partial repair covering is cured, and FIG. 4B, which is a state after the curing operation, between the existing pipe 72 and the cylindrical portion 12. The interposing elastic member 16 is in a state before being compressed before the curing operation and is in a compressed state after the curing operation, so that a gap is formed at the stage of setting the partial repair covering. No (see FIG. 5A, which is a cross-sectional view after the curing operation). In this state, the elastic member 16 is slightly restored by the hardening shrinkage of the cylindrical portion 12, but is still in a compressed state.

  And since this elastic member 16 has a void structure, it has a high compressibility and a correspondingly large restoring force, so that the sewer main pipe 72 is deformed after the installation of the partial repair covering 10, and the tubular portion Even if a situation occurs in which the inner surfaces of the sewer main pipe 72 and the attachment pipe 74 are separated from each other, the space between them is filled with the restored elastic member 16, thereby preventing the formation of a gap due to the deformation of the existing pipe. be able to. That is, as shown in FIG. 4C, which is a partial detail view after the existing pipe is deformed, the sewer main pipe 72 and the cylindrical portion 12 are compared with FIG. Even if the space is opened, the space is filled with the elastic member 16 restored from the compressed state (see FIG. 5B, which is a cross-sectional view after deformation of the sewer main 72. FIG. 5B). Then, a crack 19 is generated due to the deformation of the existing pipe).

  Therefore, even when the sewer main pipe 72 and the attachment pipe 74 are deformed, no gap is formed between the sewer main pipe 72 and the attachment pipe 74 and the cylindrical portions 12 and 14, and as described above. In addition, since the water-stopping property is ensured, the repair effect can be maintained for a long time.

  In the partial repair covering of the present invention, the outer surface layer of the elastic member 16 shown in FIG. 1 may contain organic or inorganic particles. Before installing the covering for repairing a part of an existing pipe to be repaired, by including particles in the elastic member 16 in advance, it is possible to install without waiting for the sand particles to enter and block the void structure after installation. Therefore, it is possible to ensure water-stopping and complete repairs.

  Any organic or inorganic particles may be used as long as the void structure in the compressed state of the elastic member 16 can be closed. As inorganic particles, earth and sand particles, clay particles, bentonite and the like can be used. As the organic particles, polymer particles or flour can be used.

  The size of the organic or inorganic particles may be any size as long as it can close the void structure in the compressed state of the elastic member 16. For example, the average particle size is 1 to 1000 μm, preferably 20 to 200 μm. In the present invention, the average particle diameter is determined by a laser diffraction scattering method.

  As a method of including the particles in the outer surface layer of the elastic member 16, a method of spraying the particles on the surface of the elastic member 16 by spraying or the like and allowing the particles to enter the void structure can be adopted.

  The particles are preferably water curable particles such as cement. In repairing existing pipes, it is necessary not only to prevent the inflow of groundwater and earth and sand, but also to ensure the strength of buried pipes. After the curing work of the partial repair covering 10, the water curable particles contained in the outer surface layer are hardened by the groundwater flowing from the cracks of the existing pipe, thereby increasing the degree of adhesion between the existing pipe and the partial repair covering. The tube and the covering for partial repair are integrated. When both are integrated, the strength of the tube is improved and the water-stopping property is further increased, so that a complete repair effect can be obtained.

  Moreover, in the covering for partial repair of this invention, the water stop film may be laminated | stacked on the outer side of the elastic member 16 shown in FIG. Accordingly, it is possible to ensure water-stopping from the beginning of installation without waiting for the earth and sand particles to enter and the void structure of the elastic member 16 to be clogged after the installation.

  To prevent the gap between the existing pipe and the water-stopping film from occurring, the thin water-resistant film such as a polyethylene film or a PET film is used as the water-stopping film in order to follow the uneven shape of the aged inner surface of the existing pipe. The thickness is preferably 0.005 to 0.1 mm. In addition, when providing the water-swellable rubber layer described above when the water-stopping film is provided, the water-swellable rubber layer is provided on the outer side of the water-stopping film.

  The present invention may be not only a partial repair covering for partially repairing the connection portion between the sewer main and the mounting pipe described above, but also a partial repair covering for partially repairing other portions. FIG. 6 is a perspective view showing a partial repair covering for partially repairing a straight pipe portion in a sewer main.

  The configuration is the same except that the second cylindrical portion of the covering for partial repair shown in FIG. 1 is not provided. That is, the partial repair covering 30 shown in FIG. 6 is a cylindrical partial repair covering, and has a configuration in which elastic members are provided at the edges of the outer peripheral surfaces at both ends in the axial direction. In order to install such a partial repair covering 30 at a predetermined location in the sewer main, a method similar to the above-described method can be employed. For example, the mounting pipe cylinder of the repair device 60 shown in FIG. The type in which the shape part 64 is not provided can be used.

  In the sewer pipe, not only at the connection part between the sewer main pipe and the mounting pipe, but also at the connecting part (seam) of the straight pipe part of the other sewer main pipe and the tubular piece such as the fume pipe constituting the sewer main pipe. Also, cracks and gaps are likely to occur, and in such a case, the partial repair covering shown in FIG. 6 can be suitably used.

  In addition, this invention is not limited to the structure of said each embodiment, A various deformation | transformation is possible within the range of the summary of invention.

DESCRIPTION OF SYMBOLS 10 Partial repair coating body 12 1st cylindrical part 14 2nd cylindrical part 16 Elastic member 19 Crack 30 Partial repair coating body 60 Repair apparatus 62 Cylindrical part for sewer main pipes 64 Tubular part for attachment pipes 66 Side lid 68 Fluid Introduction pipe 69 Traveling means 72 Sewer main pipe 74 Mounting pipe

Claims (9)

In a covering for partial repair made of a curable resin having a cylindrical portion for covering a repair target portion of an existing pipe buried in the ground from the inner surface,
An elastic member that covers at least the outer peripheral surface of the edge portion of the cylindrical portion over its entire circumference, and that is interposed between the existing pipe and the cylindrical portion in the covered state;
A covering for partial repair, wherein the elastic member has a void structure.   The covering for partial repair according to claim 1, wherein the elastic member is a closed cell foam.   The covering for partial repair according to claim 2, wherein a water-swellable rubber layer is provided outside the closed-cell foam.   The covering for partial repair according to claim 1, wherein the elastic member is a fiber material or an open-cell foam.   The covering member for partial repair according to any one of claims 1 to 4, wherein the elastic member is formed of a water-swellable material.   The outer surface layer of the elastic member contains organic or inorganic particles, The covering for partial repair according to claim 4 or 5 characterized by things.   The covering for partial repair according to claim 6, wherein the particles are water curable particles.   The covering for partial repair according to any one of claims 4 to 7, wherein a water blocking film is provided outside the elastic member.   The water-swellable rubber layer is provided on the outer side of the elastic member or on the outer side of the water-stopping film when the water-stopping film is provided on the outer side of the elastic member. Cover for partial repair.

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