JP6216273B2 - Closing member and supporting hole closing method - Google Patents

Description

  The present invention relates to a closing member and a method for closing a support hole using the closing member.

  In order to rehabilitate existing pipes such as aging sewer pipes, lining pipes are laid in the existing pipes, and a backfilling material is injected into the gap between the existing pipes and the lining pipes to integrate them. Rehabilitation methods are widely used.

  When injecting the backfill material, for example, as disclosed in Patent Documents 1 and 2, etc., a support device is installed inside the lining pipe. The support apparatus supports the lining pipe from the inner surface side, supplements the rigidity of the lining pipe, and prevents the lining pipe from buckling or deforming due to the injection pressure of the backfilling material. Further, the support apparatus fixes the lining pipe inside the existing pipe, and prevents the lining pipe from floating in the existing pipe due to the injection of the backfill material.

  When this type of support device is used, the lining pipe is provided with a through hole for attaching a columnar support material of the support device. The through hole is formed so as to penetrate the front and back of the lining pipe, and the support material is inserted therethrough. After the backfill material is filled in the gap between the existing pipe and the lining pipe, all the support apparatus including the support material is removed. After the support material is removed, a concave support hole is formed on the inner surface of the lining pipe so as to reach the top inner surface of the existing pipe. Conventionally, such a support hole is blocked by a blocking member having a structure as disclosed in, for example, Patent Document 3 in order to block water flow from the inside to the outside of the pipe and from the outside to the inside of the pipe. It had been.

JP-A-10-121565 JP-A-7-268853 Japanese Patent Laid-Open No. 9-242934

  The conventional closing member is provided with a taper screw on the side surface and is suitable for being screwed into the support hole for closing, but there is still room for improvement in the following points.

  That is, the concave portion generated in the through hole at the top of the lining pipe or the support material drawing trace above the lining pipe has a small inner diameter of about 50 mm and a depth of about 100 to 200 mm. Moreover, since such a support hole is formed in the inner surface of the top part of a lining pipe | tube, the obstruction | occlusion operation | work becomes an upward attitude | position. For this reason, it has been difficult to efficiently perform a series of closing operations in which the filler is filled above the support holes and then inserted while screwing the closing member. In addition, it is not easy to close accurately without causing a gap between the support hole and the closing member. As described above, since the work of closing the support hole is time-consuming and requires skill, a method capable of closing the support hole with high accuracy without causing a gap is required.

  Moreover, high external pressure and internal pressure act on the pipeline after rehabilitation, and internal and external pressure loads and unloading may occur repeatedly even for the support holes subjected to the blocking process. When ground changes such as earthquakes occur in addition to internal and external pressure loads and unloading with respect to the support holes, the screwed portions of the closing member gradually loosen, which may cause water leakage. Therefore, the pipe line subjected to the blocking process is regularly inspected, and at that time, the blocking member is replaced or repaired as necessary. Even when such a support hole was inspected, it was required that the clogging treatment could be easily performed in a short time and a stable water stoppage could be ensured over a long period of time.

  The present invention has been made in view of the above-described problems, and the object of the present invention is to reliably close the support hole formed in the pipe line and increase the adhesive strength and the fixing strength to the support hole. An object of the present invention is to provide a highly reliable closing member and supporting hole closing method that can easily perform periodic repair management and can ensure good water-stopping properties over a long period of time.

  The solution means of the present invention for achieving the above object is based on a closing member that closes a hole opened in the inner surface of the pipe. The closing member is provided with a main body portion that is fitted into the hole from the inner surface side of the tube, and a lid portion that can be attached to and detached from the main body portion. The main body portion is formed in a substantially cylindrical shape with one opening and the other bottomed, and an internal thread is formed on the inner peripheral surface, and a collar portion that contacts the inner surface of the tube is extended on the outer periphery of the opening. The flange portion is provided with a reservoir groove for storing an adhesive between the inner surface of the tube. The lid portion is provided with an external thread on the outer peripheral surface that is screwed into the internal thread of the main body portion. And the said cover part is screwed together in the said main-body part, the opening of the said main-body part is closed, and it was comprised so that a hollow space might be formed inside the said main-body part.

  By this specific matter, the hole can be reliably closed by attaching the main body portion to the hole opened on the inner surface of the tube and closing the opening of the main body portion with the lid portion. Since the main body part is provided with an adhesive reservoir groove on the collar part, when the main body part is fixed with an adhesive, the adhesive accumulates at least in the reservoir groove of the collar part. To prevent. For this reason, a main-body part can be reliably adhere | attached and fixed with respect to a hole. Moreover, since the closing member has a structure in which a hollow space closed by a lid is formed inside the main body, the filling amount of a filler or the like can be reduced as compared with a conventional closing member of this type. Moreover, weight reduction as a closure member can be achieved and the adhesiveness of the closure member with respect to a pipe | tube can be improved. Furthermore, since the closure member can easily attach or remove the lid part to the main body part, the lid part is removed from the main body part as necessary, the main body part is opened, and the inside of the main body part is opened. A repair process can be performed, and it becomes possible to maintain a good water-stopping property.

  The following is mentioned as a more concrete structure of the said closure member. That is, as the closing member, a plurality of concave grooves extending radially from the center of the bottom portion are provided on the outer surface of the bottom portion of the main body portion.

  Thereby, if it drills in the center of the bottom part of a main-body part, it can be penetrated to a several groove. Therefore, liquid resin etc. can be inject | poured into the bottom part outer surface side of a main-body part, and can be spread | diffused to circumference | surroundings through several concave grooves.

  Furthermore, in the closing member, it is preferable to provide a concave pointed hole that does not penetrate the bottom portion at the center of the inner surface of the bottom portion of the main body portion.

  Thereby, when forming the hole penetrated in the center of the bottom part of the main body part, the pointed hole can be used as a mark. Since the pointed hole receives and holds the tip of the drilling jig, the drilling operation can be easily performed on the main body.

  Moreover, it is preferable that a male screw is formed on the outer peripheral surface of the main body as the closing member. Or you may form many microprotrusions in the outer peripheral surface of the said main-body part.

  Thereby, the adhesion area of the adhesive apply | coated to the outer peripheral surface of a main-body part can be increased, and a main-body part can be adhere | attached and fixed reliably.

  The supporting hole closing method using the closing member according to each solution described above is also within the scope of the technical idea of the present invention. That is, the present invention is formed by removing the support material installed when constructing the lining pipe in the existing pipe, so as to penetrate the lining pipe and reach the inner surface of the existing pipe at the place where the support material was arranged. The present invention is directed to a support hole closing method for closing the formed support hole. In this closing method, a closing member having a main body portion fitted into the support hole from the inner surface side of the lining pipe and a lid portion attached to the main body portion is used. As the closing member, the main body has a substantially cylindrical shape with one open and the other bottomed, and an internal thread is formed on the inner peripheral surface, and a flange that contacts the inner surface of the lining pipe on the outer periphery of the opening The ridge portion is provided with a reservoir groove for storing an adhesive between the inner surface of the tube, and the lid portion is formed with an external thread on the outer peripheral surface thereof to be engaged with the internal thread of the main body portion. Then, an adhesive is applied to the outer peripheral surface and the flange portion of the main body portion, and the main body portion is fitted into a support hole to adhere to the inner surface of the support hole, and the flange portion is bonded to the inner surface of the lining pipe, The male screw of the lid portion is screwed into the female screw of the main body portion to close the opening of the main body portion.

  By this specific matter, the support hole formed at the time of construction of the lining pipe can be reliably closed by a simple operation, and a new pipe line having high water blocking ability can be formed inside the existing pipe. The closing member that closes the support hole should be sufficiently bonded with an adhesive between the outer peripheral surface of the main body and the inner surface of the support hole, and between the flange and the inner surface of the lining pipe. Therefore, it is stably fixed over a long period of time, and guarantees the water stoppage of the pipeline after rehabilitation.

  Further, as a method of closing the support hole, an injection hole penetrating from the inside of the main body portion fitted in the support hole to the center of the bottom portion of the main body portion is formed, and the outer surface of the main body portion is interposed through the injection hole. You may comprise so that the process of inject | pouring a filler into the clearance gap between support holes may be included.

  As a result, even if a gap is generated between the outer surface of the main body portion of the closing member and the support hole, an injection hole penetrating the bottom portion is formed with respect to the main body portion fitted into the support hole. A filler can be inject | poured into the outer surface side of a main-body part through a hole, and the space | gap between support holes can be filled up. Thus, the pipe line after closing the supporting hole is further improved in water-stopping, and can ensure high integrity between the closing member and the supporting hole. Therefore, even if a high water pressure acts on the main body from the inside and outside of the closing member, the main body does not come off or shift from the support hole, and the support hole can be closed well without causing water leakage. Can do.

  Furthermore, as a method for closing the support hole, the main body portion of the original closing member fixed to the support hole is removed, the support hole is exposed on the inner surface of the lining pipe, and the support hole is closed using a new closing member. Good. In this case, as a new closing member for closing the support hole, it is preferable to use a main body portion having an axial length shorter than that of the original main body portion and a lid portion attached to the main body portion. Then, an adhesive is applied to the outer peripheral surface and the flange portion of the new main body portion, and the main body portion is fitted into the support hole and bonded, and the bottom portion of the main body portion and the inner surface of the existing pipe are formed inside the support hole. It is preferable to form a gap for filling the filler divided by.

  Thereby, the filler can be filled into the gap for filling the formed filler through the injection hole formed at the bottom of the main body, and can be filled without a gap. When filling the gap of the support hole after replacing the closing member with a new one, the filling work can be performed through the main body fixed to the support hole, so that the work is easy and the filling work is reliable. And the closure member can be firmly integrated and fixed to the support hole. In this way, the support hole closing method makes it easy to repair the support hole closed state if necessary, and can maintain a good closed state in a long term for pipes that require high water-stopping properties. it can.

  In the present invention, a main body portion fitted into the hole from the inner surface side of the tube, and a lid portion attached to the main body portion, an adhesive retaining groove is provided in the collar portion of the main body portion, and a hollow space is formed inside the main body portion. Therefore, the closing operation can be simplified and the weight of the closing member can be reduced, and the closing member can be securely bonded and fixed to the hole of the tube, so that there is no risk of insufficient adhesive strength. .

  In addition, since the closing member of the present invention is configured to have external threads or a large number of minute protrusions on the outer peripheral surface of the main body portion, the adhesion area between the outer peripheral surface of the main body portion and the inner peripheral surface of the hole can be increased. The adhesive strength can be further increased, and a stable closed structure can be maintained for a long time.

  In addition, according to the method for closing the support hole of the present invention, an adhesive is applied to the outer peripheral surface of the main body part and the collar part, the main body part is fitted into the support hole and fixed to the support hole, and the lid part is screwed to the main body part. Since the main body portion is configured to be closed together, the main body portion can be securely bonded and fixed to the support hole to ensure a high water-stopping property. Also, if the lid is removed, various operations can be performed from the inside of the main body, and repair management can be easily performed as needed.

It is a perspective view which shows the obstruction | occlusion member which concerns on Embodiment 1 of this invention. FIG. 3 is a side view of the closing member according to the first embodiment. It is sectional drawing which shows the main-body part in the said closure member. It is a figure which shows the main-body part seen from the arrow A direction of FIG. It is a figure which shows the main-body part seen from the arrow B direction of FIG. FIG. 6A is a side view, FIG. 6B is a diagram showing the lid viewed from the direction of arrow C in FIG. 6A, and FIG. 6C is a diagram. It is a figure which shows the cover part seen from the arrow D direction of 6 (a). 6 is a cross-sectional view showing another example of the main body of the closing member according to Embodiment 1. FIG. It is a perspective view which shows the obstruction | occlusion member which concerns on Embodiment 2 of this invention. 6 is a side view of a closing member according to Embodiment 2. FIG. It is sectional drawing which shows the main-body part in the said closure member. It is a figure which shows the main-body part seen from the arrow E direction of FIG. It is a figure which shows the main-body part seen from the arrow F direction of FIG. 10 is a cross-sectional view showing another example of the main body portion of the closing member according to Embodiment 2. FIG. It is explanatory drawing which shows 1 process of the obstruction | occlusion method of the support hole which concerns on this invention. It is explanatory drawing which shows the state which obstruct | occluded the support hole with the said obstruction | occlusion method. It is explanatory drawing which shows the other form of the obstruction | occlusion method of the support hole which concerns on this invention. It is explanatory drawing which shows the post process of FIG. It is explanatory drawing which shows the post process of FIG.

  Hereinafter, a closing member according to an embodiment of the present invention and a support hole closing method using the closing member will be described with reference to the drawings.

(Embodiment 1)
1-7 has shown the obstruction | occlusion member which concerns on Embodiment 1 of this invention. FIG. 1 is a perspective view of the closing member, and FIG. 2 is a side view of the closing member. 3 is a cross-sectional view showing a main body portion in the closing member of the first embodiment, FIG. 4 is a view showing the main body portion seen from the direction of arrow A in FIG. 3, and FIG. 5 is a main body seen from the direction of arrow B in FIG. FIG. 6 shows a lid portion of the closing member, FIG. 6 (a) is a side view, FIG. 6 (b) is a diagram showing the lid portion viewed from the direction of arrow C in FIG. 6 (a), and FIG. (c) is a figure which shows the cover part seen from the arrow D direction of Fig.6 (a).

  The closing member 1 is used to close a hole formed in a pipe, and is made of a molded product of a resin material having excellent rigidity, impact resistance, corrosion resistance, weather resistance, and the like such as hard polyvinyl chloride resin. As shown in FIG. 1, the closing member 1 has a main body portion 2 fitted into a hole of a tube, and a lid portion 3 that can be attached to and detached from the main body portion 2.

  The main body 2 includes a substantially cylindrical insertion portion 21 having one open and the other bottomed. A male screw 211 is formed on the outer peripheral surface of the insertion portion 21, and a female screw 212 is formed on the inner peripheral surface. The outer diameter of the insertion portion 21 is equal to the inner diameter of the hole into which the main body portion 2 is fitted, or is formed with a diameter slightly larger than the inner diameter of the hole.

  As shown in FIG. 2, the main body 2 includes a flange portion 23 that extends outward on the outer periphery of the opening of the insertion portion 21. The flange portion 23 is a portion that comes into contact with the inner surface of the tube.

  As shown in FIG. 3, the collar portion 23 is provided with a retention groove 232 for accumulating an adhesive on a contact surface 231 with a pipe to be fitted. As shown in FIG. 5, the pool groove 232 is continuous in the circumferential direction and formed in an annular shape. For example, the groove 232 preferably has a groove width of 3 to 5 mm and a groove depth of about 0.5 mm in consideration of the amount of adhesive used, the curing speed, and the adhesive strength. Is preferred. The opposite surface of the contact surface 231 is formed thinner toward the outer side and is formed in a smooth taper shape.

  The tip portion 213 located on the opposite side of the opening of the main body 2 is formed in a flat surface with a smooth outer surface. Further, as shown in FIG. 4, a polygonal operation recess 214 for inserting a tool such as a hexagon wrench is provided in the center of the inner surface of the tip 213. The operation recess 214 is used when the main body 2 is fitted into the hole, and the main body 2 can be rotated by inserting a tool tip (not shown).

  Further, a concave point 215 is formed on the inner surface of the tip 213 just in the center of the operation recess 214. As shown in FIG. 3, the pointed hole 215 is formed as a conical recess that does not penetrate the outer surface of the distal end portion 213. When the through hole is formed in the distal end portion 213 of the insertion portion 21, the pointed hole 215 receives the distal end portion of a drilling tool such as an electric drill and facilitates drilling.

  The male screw 211 formed on the outer peripheral surface of the insertion portion 21 is preferably a pipe parallel screw, and the female screw 212 formed on the inner peripheral surface of the insertion portion 21 is preferably a pipe taper screw. Moreover, not only the pipe | tube screw is formed in the outer peripheral surface of the insertion part 21, but it may be formed in uneven | corrugated shape with many undulations. That is, on the outer peripheral surface of the insertion portion 21, for example, a large number of minute protrusions having a size equivalent to a thread of a pipe screw and having a mountain shape or a triangular cross-sectional shape may be formed.

  The lid 3 is fitted into the opening of the main body 2 and closes the opening. As shown in FIG. 6, the lid 3 includes a disc-shaped substrate 31 and an engaging portion 33 erected on the substrate 31 in a cylindrical or columnar shape. The outer diameter of the engaging portion 33 is formed to correspond to the inner diameter of the insertion portion 21. Further, a male screw 331 that is screwed into the female screw 212 of the insertion portion 21 is formed on the outer peripheral surface of the engaging portion 33. The engagement portion 33 is formed in a short cylindrical shape whose axial length is shorter than the axial length inside the insertion portion 21 to be screwed and does not reach the inner surface of the distal end portion 213 of the insertion portion 21. Yes.

  On the outer surface of the substrate 31 of the lid 3, an operation recess 311 for applying the tip of the rotary operation tool is formed. The operation recess 311 is formed as a single shallow groove so that the tip of a tool such as a flathead screwdriver can be engaged.

  The lid 3 is configured such that the male screw 331 of the engaging portion 33 is screwed into the female screw 212 of the main body 2, whereby the substrate 31 is accommodated in the opening end of the main body 2 and the opening of the main body 2 is closed. Therefore, the lid 3 can be easily attached to the main body 2 and can be easily removed. When the lid 3 is attached to the main body 2, a hollow space closed by the lid 3 is formed inside the main body 2. For this reason, the closing member 1 is a hollow member, and can be significantly reduced in weight as compared with a conventional closing member of this type.

  The main body 2 is preferably formed with a plurality of sizes with respect to the lid 3. For example, the main body 2 may be formed so that the axial length of the insertion portion 21 is longer or vice versa.

  FIG. 7A and FIG. 7B are cross-sectional views showing other examples of the main body 2. These main body portions 2 have the same structure as the main body portion 2 shown in FIG. 3, and only the length of the insertion portion 21 in the axial direction is different. The main body 2 shown in FIG. 7A is formed to have a longer axial length than the main body 2 shown in FIG. The main body 2 shown in FIG. 7B is formed to have a longer axial length than the main body 2 shown in FIG. Since the main body 2 is formed in a plurality of sizes, the main body 2 can be appropriately selected and used in accordance with the axial length of the hole into which the closing member 1 is fitted. 6 can be closed by screwing the lid 3 shown in FIG. 6, and the lid 3 can be used in common.

(Embodiment 2)
8-13 has shown the obstruction | occlusion member 1 which concerns on Embodiment 2 of this invention. 8 is a perspective view of the closing member 1, FIG. 9 is a side view of the closing member 1, and FIG. 10 is a cross-sectional view showing the main body 2 in the closing member 1. 11 is a diagram showing the main body 2 viewed from the direction of the arrow E in FIG. 10, FIG. 12 is a diagram showing the main body 2 viewed from the direction of the arrow F in FIG. 9, and FIG. It is sectional drawing which shows two examples.

  The closing member 1 according to this embodiment has a characteristic part in the main body 2, and the configuration of the lid 3 is the same as that shown in the first embodiment. Therefore, in the following description, the configuration of the main body unit 2 will be described in detail, and the detailed description of other configurations will be omitted using the same reference numerals as those in the first embodiment.

  As shown in FIG. 8, the main body portion 2 includes a plurality of concave grooves 216 at the distal end portion 213. The concave groove 216 is formed on the outer surface side of the distal end portion 213 in the insertion portion 21 of the main body portion 2. As shown in FIG. 10, each concave groove 216 has a semicircular cross section. However, the cross-sectional shape of the groove 216 is preferably a semicircular shape, but is not limited thereto, and may be a rectangular shape or any other shape.

  Further, as shown in FIG. 8, the plurality of concave grooves 216 are disposed so as to extend radially outward from the center of the outer surface of the tip portion 213. On the inner surface side of the distal end portion 213, a pointed hole 215 is formed in the central portion. When a through-hole is formed in the tip portion 213 using the pointed hole 215, the through-hole penetrates through a central portion where a plurality of concave grooves 216 intersect. Therefore, for example, when a liquid filler or the like is injected from the inside of the main body portion 2 through the through hole, the liquid filler is diffused along the plurality of concave grooves 216 and is uniformly filled on the outer surface side of the main body portion 2. .

  The main body 2 formed in this way has an operation recess 214 and a female screw 212 on the inner surface of the insertion portion 21, and has a male screw 211 on the outer surface. An adhesive reservoir groove 232 is provided in the circumferential direction in the collar portion 23 of the main body portion 2.

  Even in the closing member 1 according to the second embodiment, it is preferable that the main body 2 is formed with a plurality of types of sizes with respect to the common lid 3. For example, as shown in FIG. 13A, the insertion portion 21 of the main body 2 is formed to be longer in the axial direction than the insertion portion 21 shown in FIG. 10, and the insertion portion shown in FIG. 21 is formed to have a longer axial length than the insertion portion 21 shown in FIG.

  Accordingly, the plurality of types of main body portions 2 can be appropriately selected and used in accordance with the axial length of the hole into which the closing member 1 is fitted. Any body part 2 can be closed by screwing the lid part 3 shown in FIG.

  In addition, the pipe | tube used as the object to which the obstruction | occlusion member 1 is attached is not only a pipe | tube with a circular cross section, A cross section rectangular pipe | tube may be sufficient. Moreover, not only the external thread 211 is formed on the outer peripheral surface of the main body 2, but a large number of minute protrusions may be formed.

(Blocking method)
Next, a support hole closing method using the closing member 1 will be described with reference to the drawings.

  14 and 15 show a support hole closing method according to an embodiment of the present invention, FIG. 14 is an explanatory view showing one process thereof, and FIG. 15 is an explanatory view showing a state in which the support hole is closed by this closing method. is there.

  Prior to the description of the method for closing the support hole 7, the support hole 7 will be briefly described. A lining pipe 5 is inserted into the existing pipe 4 to be rehabilitated. A plurality of through holes 51 are formed at the top of the lining pipe 5 along the pipe axis direction, for example, at a pitch of about 2 m. Next, a support device is installed inside the lining pipe 5. The formed through hole 51 is inserted with a support material (not shown), which is a member of the support apparatus. Thereby, a support material is installed in the existing pipe 4 in the vertical direction, and the lining pipe 5 is supported. Thereafter, a back-filling material 6 such as mortar is filled between the existing pipe 4 and the lining pipe 5. After the backfill material 6 is cured and the existing pipe 4 and the lining pipe 5 are integrated, the entire support work apparatus including the support material is removed.

  In the lining pipe 5 from which the support material has been removed, as shown in FIG. 14, a support hole 7 that penetrates the lining pipe 5 and reaches the inner surface of the existing pipe 4 is formed. In the closing method according to the present invention, the support hole 7 formed as the trace of the support material is closed using the closing member 1 according to the following procedure.

  As the closing member 1, for example, the main body 2 shown in FIG. 7A and the lid 3 shown in FIG. 6 are used in combination. The insertion portion 21 of the main body 2 is formed to have an outer diameter that is slightly larger than the inner diameter of the support hole 7.

  First, an adhesive is applied to the outer peripheral surface of the insertion portion 21 of the main body 2 and the contact surface 231 of the flange 23. Since the external thread 211 or a large number of minute protrusions are formed on the outer peripheral surface of the insertion portion 21, a sufficient bonding area can be secured. The adhesive to be used needs to be selected according to the material constituting the closing member 1, for example, epoxy adhesive, urethane adhesive, vinyl ester resin adhesive, acrylic adhesive, synthetic rubber adhesive An agent, a cyanoacrylate adhesive, or the like can be preferably used.

  Next, the main body 2 is fitted into the support hole 7 from the inner surface side of the lining pipe 5. Since the insertion portion 21 of the main body 2 has an inner diameter slightly larger than the inner diameter of the support hole 7, the main body 2 is press-fitted into the support hole 7, and the flange 23 is engaged with the opening edge of the support hole 7. Stop. At this time, using the operation recess 214 on the inner surface of the insertion portion 21, a tool such as a hexagon wrench can be inserted into the operation recess 214 and screwed into the support hole 7 while rotating the main body portion 2.

  Thereby, the insertion part 21 of the main body part 2 is fitted inside the support hole 7, and the flange part 23 is in close contact with the inner surface of the lining pipe 5. The distal end portion 213 of the insertion portion 21 contacts the inner surface of the existing pipe 4. The adhesive applied to the outer peripheral surface of the insertion portion 21 is held by the male screw 211 or a large number of minute projections on the outer peripheral surface of the insertion portion 21, fills the space between the support holes 7, and securely bonds both. Further, since the flange portion 23 has an adhesive reservoir groove 232, the adhesive is sufficiently interposed between the flange portion 23 and the inner surface of the lining pipe 5 to bond them together, and the adhesive protrudes outside and adheres. Prevent power from dropping.

  Next, as shown in FIG. 15, the male screw 331 (see FIG. 1) of the lid 3 is screwed into the female screw 212 of the main body 2 to close the opening of the main body 2. Since an operation recess 311 is provided on the outer surface of the substrate 31 of the lid 3, a tool tip such as a minus driver is engaged with the operation recess 311 to rotate the lid 3.

  As described above, the supporting hole 7 opened in the inner surface of the lining pipe 5 can be satisfactorily closed by the closing member 1.

  Further, the supporting hole 7 may be closed using the closing member 1 as shown in FIGS. 16 is an explanatory view showing another embodiment of the method of closing the support hole 7, FIG. 17 is an explanatory view showing a post-process of FIG. 16, and FIG. 18 is an explanatory view showing a post-process of FIG.

  As shown in FIG. 16, a support hole 7 that penetrates the lining pipe 5 and reaches the inner surface of the existing pipe 4 is formed in the lining pipe 5. As described above, the support hole 7 may be a hole that has been pulled out due to the removal of the support material, or a hole that has been removed from the blocking member 1 that has been fixed to the support hole 7. Good. When it is confirmed that the support hole 7 needs to be repaired by periodic inspection of the lining pipe 5, the blocking member 1 is removed and the support hole 7 is exposed on the inner surface of the lining pipe 5. Work to explain.

  As the closing member 1 for closing the support hole 7, for example, the main body 2 shown in FIG. 10 or FIG. 13 (a) and the lid 3 shown in FIG. 6 are used in combination. When the closing member 1 is replaced with a new one for repair, the body portion 2 having an axial length shorter than the body portion 2 of the original closing member 1 is used.

  First, an adhesive is applied to the outer peripheral surface of the insertion portion 21 of the selected main body portion 2 and the contact surface 231 of the flange portion 23. As shown in FIG. 16, the main body 2 is screwed into the support hole 7 and bonded. The adhesive is held on the male screw 211 or a large number of minute protrusions on the outer peripheral surface of the insertion portion 21, and adheres and fixes the support hole 7 and the main body portion 2. Further, the adhesive of the flange portion 23 is held in the pool groove 232 and interposed between the main body portion 2 and the inner surface of the lining pipe 5 to securely bond and fix them.

  By fixing the main body 2 in this manner, as shown in FIG. 17, a filler injection gap defined by the front end 213 of the main body 2 and the inner surface of the existing pipe 4 is formed inside the support hole 7. 71 is formed. Subsequently, an injection hole 217 is formed from the inside of the main body 2 to the center of the distal end 213 of the main body 2.

  Since a pointed hole 215 is formed at the center of the operation recess 214 on the inner surface of the pointed end 213, the pointed end of a drilling tool such as an electric drill is inserted into the pointed hole 215. As a result, an injection hole 217 penetrating the outer surface of the tip portion 213 of the main body 2 is formed. Since the pointed hole 215 is provided in the main body 2, the injection hole 217 can be accurately and easily formed at an appropriate position even in an upward operation in a narrow space.

  Next, as shown in FIG. 18, the filler 8 is injected into the gap 71 formed in the support hole 7 through the injection hole 217 of the main body 2 and is filled without a gap. The injected filler 8 spreads radially from the central portion through the plurality of concave grooves 216 on the outer surface of the main body 2 and is uniformly filled in the gap 71. Even if the gap 71 has no length in the axial direction of the support hole 7 and is a slight gap, the filler 8 does not stay around the injection hole 217, and a plurality of recesses are formed. It diffuses to the periphery through the groove 216 and fills the gap 71 without any gap.

  The filler 8 may be a liquid curable material capable of integrating the main body 2 of the closing member 1 and the existing pipe 4. For example, a liquid curable synthetic resin material can be used as the filler 8, and an adhesive similar to the adhesive applied to the main body 2 can also be used.

  Thereafter, the support hole 7 is satisfactorily closed by screwing and closing the lid 3 to the main body 2.

  For example, if a gap is generated between the outer surface of the main body 2 of the closing member 1 and the support hole 7 due to secular change, the lid 3 of the closing member 1 attached to the support hole 7 is removed, and the main body An injection hole 217 is formed in the part 2, and the filler 8 is injected through the injection hole 217. Thereby, the repair which fills easily the space | gap between the main-body part 2 and the support hole 7 can be performed.

  Even when the closing member 1 is replaced with a new one, the new body portion 2 is fixed to the support hole 7 by the above-described operation, and the gap between the inside of the support hole 7 and the body portion 2 is fixed. 71 can be reliably filled with the filler 8. Thereby, the new obstruction | occlusion member 1 can be firmly integrated and fixed with respect to the support hole 7, and the support hole 7 can be repaired.

  By the closing method of the support hole 7 as described above, high integrity between the closing member 1 and the support hole 7 is ensured, and the pipe line after closing the support hole 7 is provided with sufficient water stoppage. it can. The pipe line rehabilitated by the lining pipe 5 does not cause the blocking member 1 to come off or shift from the support hole 7 even if a high water pressure acts from the outside due to the influence of groundwater, etc. The flow path can be maintained well. Further, even when the amount of water flowing through the pipeline temporarily increases due to heavy rain or the like, and the internal water pressure increases, leakage to the outside of the pipeline can be reliably prevented. Furthermore, since the closed state of the support hole 7 can be easily repaired as necessary, it is possible to maintain a pipeline that requires high water blocking in a good closed state for a long time.

  In the present invention, the existing pipe 4 is not particularly limited. For example, the existing pipe 4 is a fume pipe, a concrete pipe, a reinforced concrete pipe, a steel pipe, and the like, and is used for various applications such as a water pipe and a sewage pipe. Is.

  In the present invention, as the lining pipe 5, those conventionally used for the lining pipe 5 can be used as they are, and are not particularly limited. For example, the lining tube 5 is preferably a spiral tube formed by spirally winding a synthetic resin strip, and examples of the material thereof include hard vinyl chloride resin, polyethylene, polypropylene, polyphenylene sulfide (PPS), nylon. , Synthetic resins such as ABS resin and FRP.

  Further, in the present invention, as the backfilling material 6, those conventionally used in the rehabilitation method of the existing pipe 4 can be used as they are, and are not particularly limited. For example, cement milk, foamed mortar, etc. Cement mortar or the like can be used.

  INDUSTRIAL APPLICABILITY The present invention can be used as a closing member and a closing method suitable for closing a hole formed in a pipeline from the inner surface side.

DESCRIPTION OF SYMBOLS 1 Closure member 2 Main body part 21 Insertion part 211 Male screw 212 Female screw 213 Tip part 214 Operation recessed part 215 Pointed hole 216 Recessed groove 217 Injection hole 23 Gutter part 231 Contact surface 232 Reservation groove 3 Lid part 31 Substrate 311 Operation recessed part 33 Engagement part 331 Male thread 4 Existing pipe 5 Lining pipe 6 Backfill material 7 Support hole 71 Gap 8 Filler

Claims (8)

A closing member that closes a hole opened in the inner surface of the pipe,
A main body portion fitted into the hole from the inner surface side of the tube, and a lid portion that can be attached to and detached from the main body portion;
The main body portion is formed in a substantially cylindrical shape with one open and the other bottomed, and an internal thread is formed on the inner peripheral surface, and a collar portion that contacts the inner surface of the tube is provided on the outer periphery of the opening. This flange is provided with a reservoir groove for storing an adhesive between the inner surface of the tube,
The lid portion is provided with a male screw on the outer peripheral surface thereof, which is screwed into the female screw of the main body portion.
The closure member, wherein the lid portion is screwed to the main body portion to close the opening of the main body portion, and a hollow space is formed inside the main body portion. The closure member according to claim 1,
A closing member, wherein a plurality of concave grooves extending radially from the center of the bottom portion are provided on an outer surface of the bottom portion of the main body portion. The closure member according to claim 1 or 2,
An obstructing member, wherein a concave apex that does not penetrate the bottom is provided at the center of the inner surface of the bottom of the main body. The closure member according to any one of claims 1 to 3,
An occlusion member in which an external thread is formed on the outer peripheral surface of the main body. The closure member according to any one of claims 1 to 3,
A closing member, wherein a number of minute protrusions are formed on the outer peripheral surface of the main body. By removing the support material that was installed when the lining pipe was installed in the existing pipe, the support hole formed so as to penetrate the lining pipe and reach the inner surface of the existing pipe at the place where the support material was placed A support hole closing method,
Using a closing member having a main body portion fitted into the support hole from the inner surface side of the lining pipe, and a lid portion attached to the main body portion,
The main body includes a female screw on the inner peripheral surface of a substantially cylindrical body, one of which is open and the other is bottomed, and a flange that contacts the inner surface of the lining pipe on the outer periphery of the opening. Is provided with a reservoir groove for storing an adhesive between the inner surface of the lining pipe, and the lid portion is formed with an external thread on the outer peripheral surface thereof to be engaged with the internal thread of the main body portion,
Applying an adhesive to the outer peripheral surface and the collar part of the main body part, fitting the main body part into a support hole and adhering to the inner surface of the support hole, and adhering the collar part to the inner surface of the lining pipe,
A supporting hole closing method, wherein the male screw of the lid portion is screwed into the female screw of the main body portion to close the opening of the main body portion. A support hole closing method according to claim 6,
From the inside of the main body part fitted in the support hole, an injection hole penetrating the center of the bottom part of the main body part is formed,
A support hole closing method comprising the step of injecting a filler into a gap between the outer surface of the main body and the support hole through the injection hole. A support hole closing method according to claim 7,
The main body part of the original closing member fixed to the support hole is removed to expose the support hole on the inner surface of the lining pipe,
As a new closing member for closing this support hole, using a main body part having an axial length shorter than the original main body part, and a lid part attached to the main body part,
Apply an adhesive to the outer peripheral surface and the collar of the new body part, fit the body part into the support hole,
A method for closing a support hole, characterized in that a filler injection gap defined by a bottom part of the main body part and an inner surface of an existing pipe is formed inside the support hole.

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