JP2007169987A - Underground buried pipe repairing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an underground buried pipe repairing method for easily repairing an underground buried pipe with simple work. <P>SOLUTION: The ends 3, 4 in the curved direction of an elastic base material 2 are connected to each other from the tip side by a connecting means to sequentially form a tubular repairing material 1. After inserting the tip side of the tubular repairing material 1 into the underground buried pipe 16 from one opening, while forming the tubular repairing material 1 sequentially toward the rear end side, the tubular repairing material 1 is moved to the other opening side of the underground buried pipe 16. The tubular repairing material is thus arranged from one opening to the other opening of the underground buried pipe 16. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a buried underground pipe repair method for repairing underground buried pipes such as a sewer pipe and a protective pipe in which a cable is laid.

As a method of repairing a pipe buried in the ground (underground pipe), a method of repairing by fixing a cylindrical lining material on the inner surface of the underground pipe is known. In this method, a cylindrical lining material formed of a flexible material impregnated or coated with a thermoplastic resin, a photocurable resin, or a room temperature curable resin is disposed inside a pipe, and this cylindrical lining material is used. Inflated with water pressure or air pressure and pressed against the inner surface of the pipe line, and the lining resin is cured and cured by passing hot water, steam, or irradiating ultraviolet rays into the cylindrical lining material. Yes (see, for example, Patent Document 1).
Japanese Patent Publication No. 7-4853

  However, the underground pipe repairing method using the tubular lining material requires a large amount of ancillary devices and has many troublesome work steps. In addition, it can be applied if there is no obstruction inside the underground pipe. For example, when a cable such as a power line or a telephone line is laid inside the underground pipe, the cable is obstructed. If this is not possible, the cable must be removed from the underground pipe if it is to be applied, which is very laborious.

  An object of the present invention is to provide an underground pipe repairing method capable of easily repairing underground pipes by a simple operation.

  Another object of the present invention is that the underground pipe can be easily repaired by a simple operation, and the cable remains laid even when the cable is laid inside the underground pipe. An object of the present invention is to provide a method for repairing underground pipes that can be repaired in the state described above.

  In order to solve the above-mentioned object, the invention according to claim 1 is an underground pipe repairing method for repairing an underground pipe using a tubular repair material, wherein the tubular repair material has a circumferential direction. The elastic base material has a structure including a joining means for joining the end portions in the curving direction to form a tubular repair material, and the elastic base material. After the end portions in the bending direction are joined together from the distal end side by the coupling means to form a tubular repair material, and the distal end side of the tubular repair material is inserted into the underground pipe from one opening Then, while sequentially forming the tubular repair material toward the rear end side, the tubular repair material is moved to the other opening side of the underground pipe, and the tubular repair material is moved to one of the underground pipes. It arrange | positions ranging from an opening part to the other opening part, It is characterized by the above-mentioned.

  The invention according to claim 2 is an underground buried pipe repairing method for repairing an underground pipe in which a cable is laid inside using a tubular repair material, and the tubular repair material is arranged in a circumferential direction. The elastic base material is composed of a curved long elastic base material, and the elastic base material has a structure including a connecting means for connecting the end portions in the bending direction to form a tubular repair material. After inserting the cable from between both ends in the bending direction into the inside of the elastic base material, the ends of the elastic base material in the bending direction are connected to each other by the connecting means from the front end side to sequentially repair the tubular repair material. While forming the tubular repair material in the state where the cable is passed through the inside toward the rear end side after inserting the distal end side of this tubular repair material into the underground buried pipe from one opening portion The tubular repair material is moved to the other opening side of the underground pipe. , Characterized in that arranged over the tubular repair material while through the cable inside from one of the openings of the underground pipe to the other opening.

  The invention according to claim 3 is an underground buried pipe repairing method for repairing an underground buried pipe using a tubular repair material, and after bending a belt-like elastic base material in the width direction, End portions in the bending direction are joined together from the front end side by a coupling means to form a tubular repair material in sequence, and after inserting the front end side of this tubular repair material into the underground pipe from one opening, the rear end While sequentially forming the tubular repair material toward the side, the tubular repair material is moved to the other opening side of the underground pipe, and the tubular repair material is moved from one opening of the underground pipe. It arrange | positions over the other opening part, It is characterized by the above-mentioned.

  The invention according to claim 4 is an underground buried pipe repairing method for repairing an underground buried pipe in which a cable is laid inside by using a tubular repair material, wherein the belt-like elastic base material is curved in the width direction. After the cable is inserted into the inside of the elastic base material from between both ends of the elastic base material in the bending direction, the ends of the elastic base material in the bending direction are connected to each other by the coupling means from the front end side. The tubular repair material is sequentially formed by coupling, and the distal end side of the tubular repair material is inserted into the underground pipe from one opening, and then the cable is passed through the interior toward the rear end side. While sequentially forming the tubular repair material, the tubular repair material is moved to the other opening side of the underground pipe, and the tubular repair material is moved to one of the underground pipes while the cable is passed through the inside. Arranged from the opening to the other opening

  The invention described in claim 5 is characterized in that a large number of protrusions are formed on the surface of the elastic base material constituting the tubular repair material according to claim 1, 2, 3 or 4.

  According to a sixth aspect of the present invention, the protrusion formed on the surface of the elastic base material constituting the tubular repair material according to the fifth aspect is formed in a circumferential direction and / or an axial direction of the tubular repair material. It is a rib.

  According to a seventh aspect of the present invention, when the ends of the elastic base material constituting the tubular repair material according to the first, second, third, fourth, fifth or sixth aspect are coupled together by the coupling means. In addition, a sealing agent is applied to an end portion in a bending direction of the elastic base material to be bonded.

  According to the underground buried pipe repairing method according to claim 1, the tubular repair formed by joining ends in the curved direction of the long elastic base material curved in the circumferential direction by the coupling means. Materials are used, and the ends of the elastic base material in the bending direction are joined together from the tip side by the coupling means to form a tubular repair material, and the tip side of the tubular repair material is placed in the underground pipe The tubular repair material is moved to the other opening side of the underground pipe while the tubular repair material is sequentially formed toward the rear end side after being inserted from the one opening portion. Is disposed from one opening to the other opening of the underground pipe, so that a large-scale auxiliary device is not required, and the work process is reduced as compared with the prior art. The pipe can be easily repaired with simple operations.

  According to the underground pipe repairing method according to claim 2, the tubular repair formed by joining the ends in the curving direction of the long elastic base material curved in the circumferential direction by the coupling means. After the material is used and the cable is inserted from between both ends of the elastic base material in the bending direction into the inside of the elastic base material, the ends of the elastic base material in the bending direction are connected to each other from the tip side. A tubular repair material is sequentially formed by joining by means, and after inserting the distal end side of this tubular repair material into the underground buried pipe from one opening, and then passing the cable inside toward the rear end side While sequentially forming the tubular repair material, the tubular repair material is moved to the other opening side of the underground pipe, and the tubular repair material is moved to the inside of the underground pipe in a state where a cable is passed through the inside. A method of arranging from one opening to the other opening Therefore, a large-scale device is not required, and the work process is reduced as compared with the conventional one. The underground pipe can be easily repaired by a simple operation, and a cable is provided inside the underground pipe. Even if the cable is installed, the underground pipe can be repaired without being disturbed by the cable.

  According to the underground pipe repairing method according to claim 3, after bending the belt-shaped elastic base material in the width direction, the ends of the elastic base material in the bending direction are joined from the tip side by the coupling means. The tubular repair material is sequentially formed, and the distal end side of the tubular repair material is inserted into the underground buried pipe from one opening, and then the tubular repair material is sequentially formed toward the rear end side. Since the repair material is moved to the other opening side of the underground pipe and the tubular repair material is arranged from one opening portion to the other opening portion of the underground pipe, a large scale is required. There is no need for an accessory device, and the number of work steps is less than in the prior art, so that the underground pipe can be easily repaired with simple work.

  According to the underground buried pipe repairing method according to claim 4, after bending the belt-shaped elastic base material in the width direction, between both ends in the bending direction of the elastic base material, into the inside of the elastic base material After inserting the cable, the ends of the elastic base material in the bending direction are joined from the tip side by the coupling means to sequentially form a tubular repair material, and the tip side of the tubular repair material is embedded in the ground The tubular repair material is inserted into the pipe from one opening, and then the tubular repair material in a state where the cable is passed through the inside toward the rear end side, and the tubular repair material is formed on the other opening of the underground pipe If a large-scale device is required, the tubular repair material is arranged from one opening to the other opening of the underground pipe with the cable passing through the inside. In addition, there are fewer work processes than before, and the underground The pipe can be easily repaired by a simple operation, and even if a cable is laid inside the underground pipe, the underground pipe can be repaired without being disturbed by the cable. it can.

  According to the underground pipe repairing method according to claim 5, a number of protrusions are formed on the surface of the elastic base material constituting the tubular repair material according to claim 1, 2, 3 or 4. Therefore, the contact area between the inner peripheral surface of the underground pipe and the tubular repair material inserted into the underground pipe is reduced, and the tubular repair material is placed on the other opening side of the underground pipe. Therefore, the tubular repair material can be inserted into the underground pipe and easily moved to the other opening side of the underground pipe.

  According to the underground pipe repairing method according to claim 6, the protrusions formed on the surface of the elastic base material constituting the tubular repair material according to claim 5 are arranged in the circumferential direction of the tubular repair material and / or Alternatively, since the rib is formed in the axial direction, the contact area between the inner peripheral surface of the underground pipe and the tubular repair material inserted into the underground pipe is reduced, and the tubular repair material is attached to the ground. Since the frictional resistance when moved to the other opening side of the underground pipe is small, the tubular repair material is inserted into the underground pipe and easily moved to the other opening side of the underground pipe. In addition, the rib formed on the surface of the elastic base material improves the strength in the circumferential direction and / or the axial direction of the tubular repair material, and accordingly the thickness of the elastic base material is reduced. The tubular repair material can be reduced in weight and material cost. It can be achieved.

  According to the underground pipe repairing method according to claim 7, the ends of the elastic base material constituting the tubular repair material according to claim 1, 2, 3, 4, 5 or 6 are bent together. Since the sealing agent is applied to the end in the bending direction of the elastic base material to be joined when joining by the joining means, from between the joined ends of the elastic base material constituting the tubular repair material Water leakage can be prevented.

Hereinafter, an example of the best mode for carrying out the underground pipe repair method according to the present invention will be described.
1 to 3 are views showing an example of a tubular repair material used in the underground buried pipe repair method according to the present invention, FIG. 1 is a perspective view of the tubular repair material of this example, and FIG. FIG. 3 is an enlarged sectional view of an elastic base material constituting the tubular repair material shown in FIG.

  The tubular repair material 1 of this example is composed of a long elastic base material 2 curved in the circumferential direction. This elastic base material 2 has a structure provided with a coupling means 5 for joining the end portions 3 and 4 in the bending direction to form the tubular repair material 1.

  The elastic base material 2 forming the tubular repair material 1 is made of plastic, metal or the like. In this elastic base material 2, in this example, the end portions 3 and 4 in the bending direction are opened, that is, formed in a substantially C-shaped section (FIG. 3). The elastic base material 2 a is reduced in diameter against the elastic force in the radial direction, and the end portions 3, 4 are coupled by the coupling means 5 to form the tubular repair material 1.

  In the coupling means 5 that couples the end portions 3 and 4 in the bending direction of the elastic base material 2a, in this example, a locking protrusion formed along the axial direction on the surface side of one end portion 3 6 and a locking projection 7 that is formed along the axial direction on the back surface side of the other end portion 4 and engages with the locking projection 6 so as to face in the radial direction and engage with each other in the circumferential direction. Then, the end portions 3 and 4 of the elastic base material 2a formed in a substantially C shape are reduced in diameter against the elastic force in the radial direction, and the end portions 3 and 4 are formed. When the locking projection 6 and the locking projection 7 are locked so as to face each other in the radial direction and mesh with each other in the circumferential direction, the locking projection is caused by the restoring force in the diameter-enlarging direction of the elastic base material 2a having a reduced diameter. 6 and the locking projection 7 are firmly meshed with each other, and the end portions 3 and 4 of the elastic base material 2a in the bending direction are coupled to form the tubular repair material 1.

  Of course, the coupling means 5 for coupling the end portions 3 and 4 of the elastic base material 2a in the bending direction is not limited to the above configuration.

  A large number of protrusions 8 are formed on the surface of the elastic base material 2 a constituting the tubular repair material 1. In this example, the protrusions 8 are ribs 9 and 10 formed in the circumferential direction and the axial direction of the tubular repair material. The circumferential rib 9 and the axial rib 10 are formed such that the axial rib 10 is higher than the circumferential rib 9 (FIG. 2). In this example, the protrusion 8 is the circumferential rib 9 and the axial rib 10, but may be either the circumferential rib 9 or the axial rib 10. .

  The protrusion 8 may have another configuration. FIG. 4 is a plan view of the tubular repair material 1 showing another example of the protrusion 8 formed on the surface of the elastic base material 2. As shown in FIG. 4, the protrusion 8 is formed on the surface of the elastic base material 2a. A plurality of substantially hemispherical protrusions 11 may be provided at a predetermined interval.

  5 to 7 are views showing another example of the tubular repair material used in the underground pipe repairing method according to the present invention, FIG. 5 is a perspective view of the tubular repair material of this example, and FIG. FIG. 7 is an enlarged sectional view of an elastic base material constituting the tubular repair material shown in FIG.

  Similarly to the tubular repair material shown in FIGS. 1 to 3, the tubular repair material 1 of this example is also composed of a long elastic base material 2 curved in the circumferential direction. The elastic base material 2 has a structure including a coupling means 5 for coupling the end portions 3 and 4 in the bending direction.

  The elastic base material 2 constituting the tubular repair material 1 is made of plastic, metal or the like. In this elastic base material 2, in this example, the end portions 3 and 4 in the bending direction are closed and overlapped in the vertical direction, that is, in the radial direction (FIG. 7). The tubular base material 2 is formed by expanding the diameter of the elastic base material 2 b against the elastic force in the radial direction and connecting the end portions 3, 4 in the curved direction with the connecting means 5. .

In the coupling means 5 that couples the end portions 3 and 4 in the bending direction of the elastic base material 2b, in this example, the engagement protrusion formed on the end surface of the one end portion 3 along the axial direction. It is comprised from the groove | channel 12 and the engagement groove | channel 13 which is formed in the end surface of the said other edge part 4 along the axial direction, and the said engagement protrusion 12 engages. Then, the end portions 3, 4 in the bending direction of the elastic base material 2b overlapping in the radial direction are expanded against the elastic force in the radial direction, and the end portions of the one end portion 3 are formed. When the engagement protrusion 12 is engaged with the engagement groove 13 formed on the end face of the other end portion 4, the engagement is caused by the restoring force in the diameter reduction direction of the elastic base material having the diameter increased. The ridge 12 is firmly engaged with the engagement groove 13, and the end portions 3 and 4 of the elastic base material 2b in the bending direction are coupled to each other so that the tubular repair material 1 is formed.
Other configurations are the same as the tubular repair material shown in FIGS.

  Next, an underground underground pipe repair method for repairing underground underground pipes using the tubular repair material 1 configured as described above will be described with reference to FIG. 8 as a first example of the underground underground pipe repair method according to the present invention. It demonstrates based on thru | or FIG.

  FIG. 8 is a longitudinal sectional view showing a process of inserting the elastic base material 2 constituting the tubular repair material 1 into a manhole in which one opening of the underground pipe is opened, and FIG. 9 is one of the underground pipes. After a cable is inserted from both ends 3 and 4 in the bending direction of the elastic base material 2 into the bending inside of the elastic base material 2 inserted into a manhole having an opening, the bending direction of the elastic base material 2 FIG. 10 is an explanatory view showing a process of forming the tubular repair material 1 by joining the end portions 3 and 4 of the pipes by the joining means 5, and FIG. 10 shows the tubular tube inserted into the underground buried pipe 16 from one opening. FIG. 11 is a cross-sectional view showing the process of moving the repairing material 1 to the other opening side of the underground pipe 16, and FIG. 11 is arranged from one opening to the other opening of the underground pipe 16. It is a longitudinal cross-sectional view which shows the state which fixed the said tubular repair material 1.

  In this example, an underground pipe repairing method for repairing underground pipes in which cables are installed will be described. As shown in the figure, an underground pipe 16 having a cable 15 laid therein is buried in the ground 14 in a state of being separated by manholes 17a and 17b that stand vertically at predetermined intervals. Yes.

  In repairing such underground pipe 16, first, as shown in FIG. 8, first, the elongated repair material 1 is formed into a manhole 17 a in which one opening of the underground pipe 16 is opened. The elastic base material 2 is inserted, and the cable 15 is inserted into the curved portion of the elastic base material 2 from between both ends 3 and 4 in the bending direction of the elastic base material 2 in the manhole 17a as shown in FIG. After putting, the end portions 3 and 4 in the bending direction of the elastic base material 2 are joined together by the joining means 5 from the front end side, and the tubular repair material 1 is sequentially formed.

  When the tubular repair material 1 is formed as described above, it is preferable to apply a sealing agent to the end portions 3 and 4 in the bending direction of the elastic base material 2 to be bonded. By applying a sealing agent to the end portions 3 and 4 of the elastic base material 2, water leakage from between the end portions 3 and 4 in the bending direction of the elastic base material 2 constituting the tubular repair material 1 is prevented. be able to.

  Next, as shown in FIG. 10, the distal end side of the tubular repair material 1 formed as described above is inserted into the underground buried pipe 16 from one opening, and then the tubular repair material 1 is configured. The cable 15 is inserted from both ends 3 and 4 of the elastic base material 2 in the bending direction, and the ends 3 and 4 are sequentially connected to the rear end side by the coupling means 5 in the manhole 17a. The tubular repair material 1 inserted into the underground buried pipe 16 from one opening while the tubular repair material 1 in a state where the cable 15 is passed through is joined to the other opening side The tubular repair material 1 is arranged from one opening to the other opening of the underground pipe 16 with the cable 15 being passed through.

  The tubular repair material 1 is moved by pulling a pulling rope 18 attached to the tip of the tubular repair material 1 from the other opening side of the underground buried pipe 16. In order to facilitate the movement of the tubular repair material 1 in the underground buried pipe 16 when the tubular repair material 1 is pulled by the pulling rope 18, an inner circumference of the underground buried pipe 16 is used as necessary. A lubricant may be applied to the surface.

  A large number of protrusions 8 may be formed on the surface of the elastic base material 2 constituting the tubular repair material 1. When a large number of protrusions 8 are formed on the surface of the elastic base material 2 constituting the tubular repair material 1, the inner peripheral surface of the underground tube 16 and the underground tube 16 are inserted into the underground tube 16. Since the contact area with the tubular repair material 1 becomes small and the frictional resistance when the tubular repair material 1 is moved to the other opening side of the underground pipe 16 is small, the tubular repair material 1 is attached to the ground. It can be inserted into the underground tube 16 and easily moved to the other opening side of the underground tube 16.

  In this example, since the projection 8 is the ribs 9 and 10 formed in the circumferential direction and the axial direction of the tubular repair material 1, the circumferential direction and axis of the tubular repair material 1 are formed by the ribs 9 and 10. The strength in the direction can be improved, and the axial rib 10 is formed to be higher than the circumferential rib 9, so that the tubular repair material 1 is used as the underground pipe 16. Friction resistance when moved to the other opening side of the tube is small, the tubular repair material 1 is inserted into the underground tube 16 and easily moved to the other opening side of the underground tube 16 Can be made.

  As described above, the tubular repair material 1 inserted into the underground tube 16 is moved to the other opening side of the underground tube 16, and the cable 15 is passed through the tubular repair material. After the material 1 is arranged from one opening to the other opening of the underground pipe 16, the underground pipe 16 is embedded in the underground by appropriate fixing means 19, as shown in FIG. Secure to tube 16. As the fixing means 19, for example, an epoxy resin or mortar is injected and fixed between the underground pipe 16 and the tubular repair material 1. In this way, the repair of the underground pipe 16 in which the cable 15 is laid is completed.

  By doing in this way, a large-scale device is not necessary, and the work process is reduced as compared with the prior art, and the underground pipe 16 can be easily repaired by a simple operation. Even if the cable 15 is laid inside the buried pipe 16, the underground pipe 16 can be repaired without being disturbed by the cable 15.

  Although the underground buried pipe repairing method in the case where the cable 15 is installed in the underground pipe 16 has been described above, even if the cable 15 is not installed in the underground pipe 16, The underground pipe 16 is repaired in the same manner as in the above method except for the step of putting the cable 15 into the curved base material 2 constituting the tubular repair material 1. That is, although not particularly illustrated, a long elastic base material 2 constituting the tubular repair material 1 is inserted into the manhole 17a, and the end portion 3 of the elastic base material 2 in the bending direction is inserted into the manhole 17a. The tubular repair material 1 is sequentially formed by joining the four together from the distal end side by the joining means 5. And after inserting the front end side of the said tubular repair material 1 into the said underground pipe | tube 16 from one opening part, the rear end side of the elastic base material 2 which comprises the tubular repair material 1 in the said manhole 17a The tubular repair material 1 is sequentially formed toward the other side, the tubular repair material 1 is moved to the other opening side of the underground pipe 16, and the tubular repair material 1 is moved to one of the underground pipes 16. It arrange | positions ranging from an opening part to the other opening part. And the said tubular repair material 1 arrange | positioned ranging from one opening part of the said underground pipe | tube 16 to the other opening part is fixed by the said fixing means 19, and the repair of the said underground pipe | tube 16 is complete | finished.

  By doing in this way, the underground pipe | tube 16 can be easily repaired by a simple operation.

  In the underground buried pipe repair method of the first example described above, when the tubular repair material 1 is arranged from one opening to the other opening of the underground buried pipe 16, the underground buried pipe 16 is disposed. The movement of the tubular repair material 1 inserted from one opening into the inside is performed by pulling the pulling rope 18 attached to the tip of the tubular repair material 1 from the other opening side. As a method, it is preferable to use a tubular guide body having a conical tip as a means for facilitating the movement of the tubular repair material 1 in the underground pipe 16. Hereinafter, a method of moving the tubular repair material 1 using the tubular guide body will be described with reference to FIGS.

  12 is a perspective view showing an example of a tubular guide body, FIG. 13 is a plan view of the inner surface of one divided member obtained by dividing the tubular guide body shown in FIG. 12 in the axial direction, and FIG. 14 is a tubular guide body shown in FIG. FIG. 15 is a perspective view of a tubular repair material to which the tubular guide body is connected, and FIG. 16 shows a state in which the tubular guide body is connected to the tubular repair material. FIG. 17 is a perspective view showing a state in which a pulling string is connected to the tubular guide body, and FIG. 18 is a drawing using the tubular guide body and pulling from the other opening of the underground buried pipe into which the tubular repair material is inserted. It is explanatory drawing which shows the state which pulls a cord and moves a tubular repair material.

  As shown in FIGS. 12 to 14, the tubular guide body 20 of the present example has a conical portion 20 b that is reduced in diameter toward the distal end at the distal end portion of the main body portion 20 a slightly larger in diameter than the tubular repair material 1. And is composed of two split members 21 and 22 that are split in half in the axial direction. A coupling means 25 for coupling the divided surfaces 23, 24 of the two divided members 21, 22 to the divided surfaces 23, 24 to the two divided members 21, 22 to form the tubular guide body 20; And a connecting means 26 for connecting a rear opening end of the tubular guide body 20 formed by joining the two divided members 21 and 22 to the opening end of the tubular repair material 1. It has become.

  The two divided members 21 and 22 constituting the tubular guide body 20 are made of plastic, metal or the like, but are made of plastic in this example. Further, in the coupling means 25 for coupling the two divided members 21 and 22 to form the tubular guide body 20, in this example, in the longitudinal direction of the divided surface 23 of the one divided member 21. The fitting groove 27 is formed, and a protrusion 28 formed in the longitudinal direction on the dividing surface 24 of the other dividing member 22 and fitted in the fitting groove 27. However, the coupling means 25 is not limited to the one constituted by the fitting groove 27 and the protrusion 28.

  The fitting groove 27 constituting the coupling means 25 has a groove depth wider than the groove opening, and the protrusion 28 has a head that matches the groove shape of the fitting groove 27. The lever is wider than the groove opening of the fitting groove 27, and the protrusion 28 is pushed into the fitting groove 27 using plastic deformation to be coupled. .

  Further, the connecting means 26 for connecting the rear opening end of the tubular guide body 20 formed by connecting the two split members 21 and 22 by the connecting means 25 to the opening end of the tubular repair material 1 is provided. In this example, it is composed of an annular ridge 29 formed along the circumferential direction on the inner peripheral surface of the rear opening end. On the other hand, in the tubular repair material 1 to which the tubular guide body 20 is connected, as shown in FIG. 15, connecting means for connecting the rear opening end of the tubular guide body 20 to the opening end of the distal end side thereof. 30. In this example, the connecting means 30 is formed on the outer peripheral surface of the opening end portion on the distal end side of the tubular repair material 1 along the circumferential direction, and the annular protrusion formed on the rear opening end portion of the tubular guide body 20. It is comprised by the annular fitting groove | channel 31 with which the strip | line 29 fits. And after inserting the rear opening end of the tubular guide body 20 into the outer periphery of the opening end on the distal end side of the tubular repair material 1 while slightly expanding the diameter by elastic deformation, the rear opening end of the tubular guide body 20 The tubular guide body 20 and the tubular repair material are fitted into the tubular fitting groove 31 formed in the opening end portion on the distal end side of the tubular repair material 1 with the annular ridge 29 formed in the portion. 1 is connected (see FIG. 16).

The tubular guide body 20 is provided with a string passing hole 32 in the conical portion 20b at the distal end of the main body 20a of the tubular guide body 20 so that the traction string 33 can be connected. Is used as follows: First, in the manhole 17a in which one opening of the underground pipe 16 is opened, after the cable 15 is inserted from the divided opening into the inside of one dividing member 21 constituting the tubular guide body 20, The dividing surface 24 of the other dividing member 22 is coupled to the dividing surface 23 of the dividing member 21 by the coupling means 25 to form the tubular guide body 20 in a state in which the cable 15 is passed inside.

  Next, in the manhole 17a, the cable 15 is inserted into the curved base material 2 constituting the tubular repair material 1 from both ends 3 and 4 in the curved direction of the elastic base material 2; After the end portions 3 and 4 in the bending direction of the elastic base material 2 are joined together by the joining means 5 to form the tubular repair material 1 in a state in which the cable 15 is passed through, as shown in FIG. The opening end on the distal end side of the tubular repair material 1 and the rear opening end of the tubular guide body 20 are connected by the connecting means 26 and 30, and in this state, the tubular repair material with the tubular guide body 20 at the head. 1 is inserted into the underground pipe 16 from one opening.

  Thereafter, as described in the first example, the cable 15 is inserted from both ends 3 and 4 in the bending direction of the elastic base material 2 constituting the tubular repair material 1, and the ends 3 and 4 are inserted. The tubular repair material 1 is formed by sequentially joining the manholes 17a toward the rear end side by the coupling means 5 to form the tubular repair material 1 in a state where the cable 15 is passed through the manhole 17a. It arrange | positions ranging from one opening part of the said underground pipe | tube 16 to the other opening part.

  Thus, when the tubular repair material 1 is inserted into the underground buried pipe 16 from one opening with the tubular guide body 20 at the top, even if the underground buried pipe 16 has a curved portion, Since the conical portion 20b at the distal end of the tubular guide body 20 guides the tubular repair material 1 connected to the tubular guide body 20 in a bending direction according to the curved portion of the underground tube 16, The movement of the tubular repair material 1 in the underground pipe 16 can be further facilitated.

  When the tubular repair material 1 inserted into the underground pipe 16 is pulled and moved from the other opening of the underground pipe 16, the conical portion 20b of the tubular guide body 20 is shown in FIG. The traction string 33 is connected to a string passage hole 32 provided in the cable, and as shown in FIG. 18, the traction string 33 is pulled from the other opening side of the underground tube 16, and the underground The tubular repair material 1 inserted from one opening into the buried pipe 16 can be moved.

  The tubular guide body 20 described above can be used in the same manner even when the cable 15 is not installed in the underground pipe 16.

  Next, a second example of the underground pipe repair method according to the present invention will be described with reference to FIGS. However, the drawings used in the first example shall be cited as necessary. FIG. 19 is a longitudinal sectional view showing a step of drawing a belt-like elastic base material from a roll rotatably supported by a roll stand installed on the ground part of the manhole, and inserting it into the manhole. FIG. 20 shows FIG. FIG. 21 is an enlarged perspective view showing a belt-like elastic base material. FIG. 21 shows a state in which the belt-like elastic base material is heated in a width direction by a molding machine after the belt-like elastic base material is heated by heating means, and both ends in the bending direction are It is explanatory drawing which shows the process of forming the open substantially C-shaped elastic base material.

  As shown in FIG. 19, as in the first example, the underground pipe 42 in which the cable 41 is laid inside the ground 40 is divided by manholes 43 a and 43 b that stand vertically at predetermined intervals. It is buried in the state.

  In this example, after the band-shaped elastic substrate 2 is bent in the width direction to form the elastic substrate 2a shown in FIG. 3 described in the first example, the elastic substrate 2a is bent as in the first example. The end portions 3 and 4 in the direction are coupled by the coupling means 5 to form the tubular repair material 1 shown in FIGS. 1 and 2, and the repair of the underground pipe 42 is performed using the tubular repair material 1. Do. This will be described in detail below.

  The band-shaped elastic base material 2 is wound around a roll stand 44 installed on the ground portion of the manhole 43 a to form a roll 45. The roll 45 is rotatably supported by the roll stand 44.

  The end portions 3a and 4a in the width direction of the belt-like elastic base material 2 forming the roll 45 are end portions in the bending direction of the elastic base material 2a formed by bending the belt-like elastic base material 2 in the width direction. A coupling means 5 for coupling 3 and 4 is provided. In this coupling means 5, a locking projection formed in the axial direction on one surface side (side on which a projection 8 described later is formed) of one end portion 3 a in the width direction of the belt-like elastic base material 2. 6 and the other end 4a in the width direction of the band-shaped elastic substrate 2 is formed along the axial direction, and the band-shaped elastic substrate 2 is curved in the width direction to form the elastic substrate. When the elastic base material 2a is formed, the elastic base material 2a is engaged with the engaging protrusion 6 formed on the end portion 3a which is one end portion 3 in the bending direction so as to be engaged with each other in the circumferential direction. It is comprised from the latching protrusion 7. FIG. Then, the end portions 3 and 4 of the elastic base material 2a formed in a substantially C shape by bending the belt-like elastic base material 2 in the width direction are reduced in diameter against the elastic force in the radial direction. When the locking projections 6 and the locking projections 7 formed on the end portions 3 and 4 are locked so as to face each other in the radial direction and mesh with each other in the circumferential direction, the diameter of the elastic base material 2a reduced in diameter is reduced. Due to the restoring force in the diameter increasing direction, the locking projection 6 and the locking projection 7 are firmly engaged, and the end portions 3 and 4 of the elastic base material 2a in the bending direction are coupled to each other in FIG. 1 and FIG. The illustrated tubular repair material 1 is formed.

  In this example, a large number of protrusions 8 are formed on one surface side of the belt-like elastic substrate 2. The protrusions 8 are ribs 9 a and 10 a formed in the width direction and the longitudinal direction of the belt-like elastic base material 2. The ribs 9a and 10a are formed in the tubular shape shown in FIGS. 1 to 3 when the elastic base material 2a constituting the tubular repair material 1 is formed by curving the belt-like elastic base material 2 in the width direction. The ribs 9 and 10 are formed in the circumferential direction and the axial direction of the repair material 1.

  In the ribs 9a in the width direction and the ribs 10a in the longitudinal direction, the ribs 10a in the longitudinal direction are formed higher than the ribs 9a in the width direction. The rib 10 to be formed in the axial direction of the tubular repair material 1 is formed to be higher than the rib 9 to be formed in the circumferential direction. In this example, the protrusion 8 is the rib 9a in the width direction and the rib 10a in the longitudinal direction, but may be either one of the rib 9a in the width direction or the rib 10a in the longitudinal direction.

  In repairing the underground pipe 42, first, the belt-like elastic base material 2 is pulled out from the roll 45 supported by a roll stand installed on the ground portion of the manhole 43a, and this is drawn into the manhole 43a. insert. Then, in the manhole 43a, as shown in FIG. 21, the belt-like elastic substrate 2 is heated by the heating means 46.

  Next, the belt-like elastic base material 2 heated by the heating means 46 is curved in the width direction, and the substantially C-shaped elastic base material shown in FIG. 2a is formed. The band-shaped elastic substrate 2 is bent by a molding machine 47. In this molding machine 47, one end portion in the longitudinal direction (the heating means 46 side) is gently curved, and both end portions in the width direction gradually rise from one end portion in the longitudinal direction toward the other end side. In the cross-sectional shape in the width direction, the other end portion in the longitudinal direction has a substantially C-shaped cross section. Is formed. By passing the belt-like elastic base material 2 from one end portion to the other end portion of the molding machine 47, the belt-like elastic base material 2 is bent in the width direction, and the end portions 3 and 4 in the bending direction are formed. An open substantially C-shaped elastic base material 2a is formed.

  After forming the elastic base material 2a, as in the first example, after inserting the cable 41 from between the ends 3, 4 of the elastic base material 2a in the bending direction into the inside of the elastic base material 2a, The end portions 3 and 4 are joined together by the joining means 5 to form the tubular repair material 1 in a state where the cable 41 is passed through the inside. Then, the tubular repair material 1 is inserted into the underground pipe 42 from one of the openings opened in the manhole 43a as in the first example, and then the cables 41 are sequentially placed toward the rear end side. The underground pipe 42 is moved to the other opening that opens in the manhole 43b while forming the underground pipe 42 in the inserted state. As in the first example, after the tubular repair material 1 with the cable 41 inserted therein is arranged from one opening to the other opening of the underground pipe 42, the tubular repair is performed. The material 1 is fixed in the underground pipe 42 by the fixing means 19, and the repair of the underground pipe 42 is completed.

  When the tubular repair material 1 is arranged from one opening to the other opening of the underground pipe 42, the movement of the tubular repair material 1 is performed using the traction rope 18 described in the first example. It may be performed by using the tubular guide body 20 described in the first example. When the tubular guide body 20 is used, although not shown, a groove portion is formed along the width direction at the distal end portion of the belt-like elastic base material 2. As a result, the belt-like elastic base material 2 is bent in the width direction to form a substantially C-shaped elastic base material 2a with the ends 3 and 4 in the bending direction opened, and this elastic base material 2a. When the tubular repair material 1 is formed from the annular fitting groove, the groove portion is formed along the circumferential direction on the outer peripheral surface of the open end portion of the tubular repair material 1 shown in FIG. 32. Then, a fitting protrusion 30 formed at the rear opening end of the tubular guide body 20 is fitted into the annular fitting groove 32 to connect the tubular guide body 20 to the tubular repair material 1. The tubular repair material 1 is moved.

  According to the underground pipe repairing method of the second example, as in the first example, a large-scale device is not required, and the work process is reduced as compared with the prior art, and the repair of the underground pipe 42 is simplified. The work can be easily performed, and even if the cable 41 is laid inside the underground pipe 42, the underground pipe 42 can be repaired without being obstructed by the cable 41. it can. In addition, the roll 45 around which the belt-shaped elastic base material 2 is wound can be formed compactly, and the roll 45 formed in this manner may be transported to the repair site. It's easy to do.

  As described above, the belt-shaped elastic base material 2 is curved in the width direction to form a substantially C-shaped elastic base material 2a with the ends 3 and 4 in the bending direction opened, and the tubular repair is performed from the elastic base material 2a. Although the case where the underground pipe 42 is repaired by forming the material 1 is described, the belt-shaped elastic base material 2 is bent in the width direction, and the end portions 3 and 4 in the bending direction are closed up and down, That is, the elastic base material 2b shown in FIG. 7 in a state of being overlapped in the radial direction is formed, and then the end portions 3 and 4 of the elastic base material 2a curved in the circumferential direction are joined together by the joining means 5. The tubular repair material 1 shown in FIGS. 5 and 6 may be formed, and the underground repair pipe 1 may be used to repair the underground pipe 42. FIG. 22 is a perspective view showing the belt-like elastic base material 2 that forms the elastic base material 2b in a state where the end portions 3 and 4 in the bending direction are closed and overlapped in the vertical direction, that is, in the radial direction. A large number of protrusions 8 are formed on one surface side of the belt-like elastic base material 2 shown in FIG. The protrusions 8 are ribs 9a and 10a formed in the width direction and the longitudinal direction as in the belt-like elastic base material 2 shown in FIG. Further, at the end portions 3a and 4a in the width direction of the band-shaped elastic base material 2, the end portions 3 and 4 in the bending direction of the elastic base material 2b formed by bending the band-shaped elastic base material 2 in the width direction. A coupling means 5 for coupling each other is provided. In this coupling means 5, the engagement protrusion 12 formed in the axial direction on the end face of one end portion 3 a in the width direction of the belt-like elastic substrate 2, and the width of the belt-like elastic substrate 2. When the elastic base material 2b is formed by bending the belt-like elastic base material 2 in the width direction, the elastic base material 2b is curved on the end surface of the other end portion 4a in the direction. It is comprised from the engaging groove 13 with which the engaging protrusion 12 formed in the said edge part 3a used as the one edge part 3 of a direction engages.

  And the bending direction of the elastic base material 2b shown in FIG. 7 formed in the state which curved the strip | belt-shaped elastic base material 2 in the width direction, the edge parts 3 and 4 of the bending direction closed, and it overlapped up and down, ie, radial direction, was formed. The end portions 3 and 4 are expanded in diameter against the elastic force in the radial direction, and the engaging protrusion 12 formed on the end surface of the one end portion 3 a is formed on the end surface of the other end portion 4. When engaged with the formed engagement groove 13, the engagement protrusion 12 is firmly engaged with the engagement groove 13 by the restoring force in the reduced diameter direction of the elastic base material 2 b whose diameter has been expanded, End portions 3 and 4 in the bending direction of the elastic base material 2b are joined together to form the tubular repair material 1 shown in FIGS.

  In the manhole 43a, the band-shaped elastic substrate 2 is curved in the width direction, and the end portions 3 and 4 in the bending direction are closed to form the elastic substrate 2b shown in FIG. The process to perform is demonstrated based on FIG. In FIG. 23, after heating the belt-like elastic base material by the heating means, the heated belt-like elastic base material is bent in the width direction by a molding machine, and the end portions 3 and 4 in the bending direction are closed, so It is explanatory drawing which shows the process of forming the overlapping elastic base material.

  To form the elastic base material 2b by bending the belt-like elastic base material 2 in the manhole 43a, first, the belt-like elastic base material 2 is heated by the heating means 46. Then, the heated elastic band-like base material 2 is bent in the width direction, and the end portions 3 and 4 in the bending direction are closed to form an elastic base material 2b that overlaps in the vertical direction, that is, in the radial direction. The band-shaped elastic substrate 2 is bent by a molding machine 48. In this molding machine 48, one end in the longitudinal direction (the heating means 46 side) is gently curved, and both end portions in the width direction gradually rise from one end in the longitudinal direction to the other end. In the cross-sectional shape in the width direction, the end portion in the bending direction is curved at the other end portion in the longitudinal direction. 3 and 4 are closed and formed into a shape overlapping in the vertical direction, that is, in the radial direction. By passing the band-shaped elastic substrate 2 from one end side to the other end side of the molding machine 48, the band-shaped elastic substrate 2 is bent in the width direction, and the end portions 3 and 4 in the bending direction are formed. The elastic base material 2b is formed by closing and forming it in a state of overlapping vertically, that is, in the radial direction.

  And the edge parts 3 and 4 of the bending direction of the said elastic base material 2b formed in this way are couple | bonded by the said coupling means 5, and the tubular repair material 1 shown in FIG.5 and FIG.6 is formed, This Using the tubular repair material 1, the underground pipe 42 is repaired.

  Although the underground buried pipe repair method when the cable 41 is installed in the underground pipe 42 has been described above, even if the cable 41 is not installed in the underground pipe 42, The underground pipe 42 is repaired in the same manner as in the above method except for the step of inserting the cable 41 into the curved base material 2 constituting the tubular repair material 1. That is, after the band-shaped elastic substrate 2 is inserted into the manhole 43a, the band-shaped elastic substrate 2 is heated by the heating means 46 in the manhole 43a, and then the band-shaped elastic substrate 2 is moved to the manhole 43a. The tubular repair material 1 is formed by bending in the width direction by the molding machine 47 or the molding machine 48, and joining the end portions 3 and 4 in the width direction of the curved elastic base material 2 by the coupling means 5. After the repair material 1 is arranged from one opening to the other opening of the underground pipe 42, the repair material 1 is fixed in the underground pipe 42 to repair the underground pipe 42.

The perspective view which shows an example of the tubular repair material used with the underground pipe repair method which concerns on this invention. The AA line expanded sectional view of FIG. The expanded sectional view of the elastic base material which comprises the tubular repair material shown in FIG. The top view which shows the other example of the tubular repair material in which protrusion was formed in the surface. The perspective view which shows the other example of the tubular repair material used with the underground pipe repair method which concerns on this invention. The BB line expanded sectional view of FIG. The expanded sectional view of the elastic base material which comprises the tubular repair material shown in FIG. The longitudinal cross-sectional view which shows the process of inserting the elastic base material which comprises a tubular repair material in the manhole which one opening part of an underground pipe | tube opens by the first example of the underground pipe | tube repair method which concerns on this invention. After inserting a cable from between both ends of the bending direction of the elastic base material into the bending inside of the elastic base material inserted into the manhole in which one opening of the underground pipe opens, the bending direction of the elastic base material Explanatory drawing which shows the process of joining the edge parts of this by a coupling | bonding means, and forming a tubular repair material. The cross-sectional view which shows the process of moving the tubular repair material inserted into the inside of the underground buried pipe from one opening part to the other opening part side of the underground buried pipe. The longitudinal cross-sectional view which shows the state which fixed the said tubular repair material arrange | positioned ranging from one opening part of the underground pipe | tube 16 to the other opening part. The perspective view which shows the tubular guide body used with the other method for moving a tubular repair material. The inner surface side top view of one division member which divided the tubular guide body shown in FIG. 12 into 2 in the axial direction. The inner surface side top view of the other division member which divided the tubular guide body shown in FIG. 12 into 2 in the axial direction. The perspective view of the tubular repair material which connects a tubular guide body. The longitudinal cross-sectional view which shows the state which connected the tubular guide body to the tubular repair material. The perspective view which shows the state which connected the pulling string to the tubular guide body. Explanatory drawing which shows the state which pulls the tow string from the other opening part of the underground pipe | tube which inserted the tubular repair material using the tubular guide body, and moves a tubular repair material. In the second example of the underground buried pipe repair method according to the present invention, a step of pulling out a belt-like elastic base material from a roll rotatably supported by a roll stand installed on a portion of the manhole above the ground and inserting it into the manhole FIG. The expansion perspective view which shows the strip | belt-shaped elastic base material shown in FIG. The step of heating the belt-shaped elastic base material by the heating means and then bending the heated belt-shaped elastic base material in the width direction by a molding machine to form a substantially C-shaped elastic base material having both ends in the bending direction opened. FIG. The perspective view which shows the strip | belt-shaped elastic base material which forms the elastic base material of the state which the edge part of the bending direction closed and it overlapped up and down, ie, radial direction. After heating the belt-like elastic base material with the heating means, the heated belt-like elastic base material is bent in the width direction by a molding machine, the end in the bending direction is closed, and the elastic base material overlapping in the vertical direction, that is, in the radial direction, is formed. Explanatory drawing which shows the process to form.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tubular repair material 2,2a, 2b Elastic base material 3,3a, 4,4a End part 5 Coupling means 6,7 Locking protrusion 8 Projection 9,9a, 10,10a Rib 11 Protrusion 12 Engagement protrusion 13 Engagement Groove 14, 40 Ground 15, 41 Cable 16, 42 Underground pipe 17a, 17b, 43a, 43b Manhole 18 Pulling rope 19 Fixing means 20 Tubular guide body 20a Main body 20b Conical part 21, 22 Dividing member 23, 24 Dividing Surface 25 Coupling means 26 Connection means 27 Fitting groove part 28 Projection part 29 Annular protrusion 30 Connection means 31 Annular fitting groove 32 String passage hole 33 Pulling string 44 Roll stand 45 Roll 46 Heating means 47, 48 Molding machine

Claims (7)

An underground pipe repair method for repairing underground pipes using a tubular repair material,
The tubular repair material is composed of a long elastic base material curved in the circumferential direction, and the elastic base material is provided with a coupling means for joining the end portions in the curving direction to form a tubular repair material. And
End portions of the elastic base material in the bending direction are joined from the tip side by the joining means to form a tubular repair material in sequence, and the tip side of the tubular repair material is opened into the underground tube. The tubular repair material is moved toward the other opening side of the underground pipe while the tubular repair material is sequentially formed toward the rear end side, and the tubular repair material is embedded in the underground. An underground buried pipe repairing method comprising disposing the pipe from one opening to the other opening. An underground underground pipe repair method for repairing underground underground pipes in which cables are installed using tubular repair materials,
The tubular repair material is composed of a long elastic base material curved in the circumferential direction, and the elastic base material has a coupling means for joining the end portions in the curving direction to form a tubular repair material. And
After inserting the cable from between both ends of the elastic base material in the bending direction into the inside of the elastic base material, the ends of the elastic base material in the bending direction are coupled to each other by the coupling means from the tip side. A tubular repair material is formed in order, and the distal end side of the tubular repair material is inserted into the underground buried pipe from one opening, and then the cable is passed through the inside toward the rear end side. The tubular repair material is moved to the other opening side of the underground tube, and the tubular repair material is removed from the one opening portion of the underground tube with a cable passing through the inside. An underground pipe repairing method characterized by being arranged over the other opening. An underground pipe repair method for repairing underground pipes using a tubular repair material,
After bending the belt-shaped elastic base material in the width direction, the ends of the elastic base material in the bending direction are joined together from the tip side by a coupling means to form a tubular repair material in order, and the tip side of the tubular repair material is After inserting from one opening into the underground pipe, the tubular repair material is moved to the other opening side of the underground pipe while sequentially forming the tubular repair material toward the rear end side. And arranging the tubular repair material from one opening to the other opening of the underground pipe. An underground underground pipe repair method for repairing underground underground pipes in which cables are installed using tubular repair materials,
After the band-shaped elastic base material is bent in the width direction, the cable is inserted into the inside of the elastic base material from between both ends of the elastic base material in the bending direction, and then the elastic base material ends in the bending direction. The tubular repair materials are sequentially formed from the leading end side by the coupling means, and the distal end side of the tubular repair material is inserted into the underground tube from one opening and then toward the rear end side. While forming the tubular repair material in a state where the cable is passed through the inside sequentially, the tubular repair material is moved to the other opening side of the underground tube, and the tubular repair is performed while the cable is passed through the inside. A material is disposed from one opening to the other opening of the underground pipe. A method for repairing an underground pipe.   The underground pipe repairing method according to claim 1, 2, 3, or 4, wherein a plurality of protrusions are formed on a surface of the elastic base material constituting the tubular repair material. 6. The ground according to claim 5, wherein the protrusion formed on the surface of the elastic base material constituting the tubular repair material is a rib formed in a circumferential direction and / or an axial direction of the tubular repair material. Inside buried pipe repair method. When the ends of the elastic base material constituting the tubular repair material are joined to each other by the joining means, a sealing agent is applied to the end of the elastic base material to be joined in the curved direction. The underground pipe repair method according to claim 1, 2, 3, 4, 5, or 6.

Images