JP2000213053A - Existing old pipe regenerating construction method, and timbering device therefor method, and blocking member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pour and fill a back-filling material into a clearance between an existing old pipe and a newly provided lining pipe from a back-filling material supply hose by connecting one end of the back-filling material supply hose with a connection port at a basic end of a hollow rod body and pour and fill the back-filling material in all regions even when construction distance of the existing old pipe becomes long by installing a timbering device in a proper section in the newly provided lining pipe. SOLUTION: This is a timbering device A in an existing old pipe regenerating construction method provided with an annular frame 1 and support means 13, 14 supporting the annular frame 1 in the existing old pipe 2 and a lining pipe 3 which are inserted and provided in the lining pipe 3 newly provided in the existing old pipe 2. At least a part of the support means 14 supporting the annular frame 1 in the existing old pipe 2 has a hollow rod body 141 in which a male screw to be screwed into a screw hole provided in the annular frame 1 is provided on an outer face so that it can advance and retract frame an inner side to an outer side of the annular frame 1 by rotating the hollow rod body 141, a back-filling material discharge port 1412 is provided close to a tip part on the outside of the annular frame 1 of the hollow rod body 141, and a connection port 1411 to be connected to one end of a back-filling material supply hose 4 is provided in a basic end part on the inside of the annular frame 1 of the hollow rod body 141.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoring device in an existing pipe rehabilitation method, an existing pipe rehabilitation method, and a closing member.

[0002]

2. Description of the Related Art Conventionally, as described in, for example, Japanese Patent Publication No. 3-48392, a new lining pipe such as a spiral pipe is inserted into an existing aging pipe, and the existing aging pipe and the new lining pipe are connected. There is known an old pipe rehabilitation method in which a backfill material is injected and filled into a gap between the pipes.

[0003] In such an existing aging pipe rehabilitation method, Japanese Patent Application Laid-Open Nos. 10-121565 and 10-1 are disclosed.
A supporting device as described in JP 21566 is used. That is, when filling and filling the gap between the existing aging pipe and the new lining pipe with the backfill material, the shoring device is inserted into the new lining pipe, and the supporting device is provided by the support means provided on the shoring device. Is installed in the newly installed lining pipe so as to oppose the filling pressure of the backfill material.

When filling the gap between the existing aging pipe and the new lining pipe with the backfill material, as shown in FIG. 9, the backing material is inserted into the existing aging pipe (a) and the existing aging pipe (a). Insert the nozzle (e) at the end of the backing material supply hose (d) from one end of the lining pipe (b) into the gap (c) between the existing aging pipe (b) and the lining pipe (b). The backfill material was injected and filled. In FIG. 9, (f) is a valve provided in the nozzle (e).

Alternatively, as shown in FIG. 10, an injection hole (g) is pierced in a new lining tube (b) by using a tool such as a cylindrical saw having a saw blade at its tip, and the lining tube (b) is pierced.
The mounting member (h) of the injection nozzle is attached to the inner surface of the device by welding or the like, the injection nozzle is mounted on the mounting member (h), and the backfill material is injected and filled.

[0006]

However, as shown in FIG. 9, a gap between one end of the existing deteriorated pipe (a) and the lining pipe (b) from one end of the existing deteriorated pipe (a) and the lining pipe (b). Injecting and filling the backfill material by inserting the nozzle (e) at the end of the supply hose (d) for the backfill material into (c) is only possible if the construction distance of the existing aging pipe (a) is long. Injecting the backfill material from one end of the aged pipe (a) and the lining pipe (b) may make it difficult to inject and fill the entire area.

Further, as shown in FIG. 10, an injection hole (g) is formed in the lining pipe (b), and a mounting member (h) of the injection nozzle is mounted by welding or the like, and the injection member is mounted on the mounting member (h). Installing the nozzle and injecting the backfill material is performed by removing the mounting member (h) or injecting the injection hole (h) after the injection and filling.
Required porosity treatment.

The present invention has been made in view of the above-mentioned problems in the conventional existing pipe rehabilitation method, and an object of the present invention is to solve the above-mentioned problems and to solve the problem in the existing old pipe rehabilitation method. An object of the present invention is to provide a supporting device, an existing pipe rehabilitation method, and a closing member.

[0009]

The invention according to claim 1 (the present invention 1) provides an annular frame which is inserted and installed in a lining pipe newly installed in an existing aging pipe, and the annular frame is attached to the existing aging pipe. And a support means for supporting the inside of the lining pipe in an existing deteriorated pipe rehabilitation method, wherein at least a part of the support means for supporting the annular frame in the existing deteriorated pipe is provided on the annular frame. A male screw screwed into the screw hole has a hollow rod provided on the outer surface, and is capable of moving forward and backward from the inside of the annular frame to the outside by rotating the hollow rod. An existing aging that is provided with a backfill material discharge port near the outer distal end and a connection port that can be connected to one end of the backfill material supply hose at the base end inside the annular frame of the hollow rod. For pipe rehabilitation method Kicking a shoring system.

[0010] The invention (invention 2) according to claim 2 is an existing aging pipe rehabilitation method using the shoring device according to the present invention 1, wherein the shoring device according to the present invention 1 is installed. Inserted into a newly installed lining pipe in the pipe, the annular frame of the support device is supported in the existing aging pipe and the new lining pipe by support means, and the tip of the hollow rod is inserted into the injection hole of the lining pipe and penetrated. A backfill material supply hose is connected to a connection port at a base end of the hollow rod, and the backfill material is discharged from a backfill material discharge port near a distal end of the hollow rod, and the backfill material is pressed into contact with the inner surface of the existing aging pipe. A method for rehabilitating an existing aging pipe in which a material is filled in a gap between the existing aging pipe and the lining pipe.

The invention according to claim 3 (the present invention 3) is a closing member for closing an injection hole of a lining pipe in an existing deteriorated pipe rehabilitation method, comprising a plug and a plug receiving member,
An external thread is provided on the outer surface of the plug, and the plug receiving member is constituted by a short cylinder having an internal thread provided on the inner surface, and the plug member can be screwed into the female screw of the plug receiving member. It is.

According to a fourth aspect of the present invention, there is provided an annular frame which is inserted and installed in a lining pipe newly installed in an existing old pipe having a substantially rectangular cross section, and the annular frame is inserted into the existing old pipe and the annular pipe. A support device in an existing pipe rehabilitation method having a support means for supporting the inside of a lining pipe, wherein at least a part of the support means for supporting the annular frame in the existing pipe is a longitudinal direction of the existing pipe. Are arranged to form a symmetric pair in an upper part in a plane orthogonal to
The pair of supporting means has a hollow rod provided on the outer surface with a male screw screwed into a screw hole provided in the annular frame, and by rotating the hollow rod from the inside to the outside of the annular frame. A backfill material discharge port is provided near the distal end of the hollow rod outside the annular frame, and one end of a backfill material supply hose is provided at a base end inside the annular frame of the hollow rod. This is a supporting device in the existing pipe rehabilitation method, which is provided with a connection port that can be connected to the pipe.

The invention according to claim 5 (the present invention 5) relates to an existing pipe rehabilitation method using the support apparatus according to the present invention 4, wherein the support apparatus according to the present invention 4 is installed. Inserted into a newly installed lining pipe in the pipe, the annular frame of the support device is supported in the existing aging pipe and the new lining pipe by support means, and the tip of the hollow rod is inserted into the injection hole of the lining pipe and penetrated. A backfill material supply hose is connected to a connection port at a base end of the hollow rod, and the backfill material is discharged from a backfill material discharge port near a distal end of the hollow rod, and the backfill material is pressed into contact with the inner surface of the existing aging pipe. A method for rehabilitating an existing aging pipe in which a material is filled in a gap between the existing aging pipe and the lining pipe.

[0014] According to a sixth aspect of the present invention (the present invention 6), an annular frame is inserted and installed in a lining pipe newly installed in an existing aging pipe having a substantially rectangular cross section, and the annular frame is supported in the lining pipe. A support device in an existing pipe rehabilitation method having a support means, wherein a hollow rod is disposed so as to form a symmetric pair in an upper portion in a plane orthogonal to a longitudinal direction of the existing pipe. A pair of hollow rods is provided on the outer surface with a male screw that is screwed into a screw hole provided in the annular frame, and is rotatable from the inside of the annular frame toward the injection hole of the lining pipe by rotating, An existing backfill material discharge port is provided near the outer end of the annular frame, and a connection port that can be connected to one end of the backfill material supply hose is provided at a base end inside the annular frame. Aged pipe rehabilitation A shoring device in.

[0015] The invention according to claim 7 (the present invention 8) is an existing aging pipe rehabilitation method using the shoring device according to the present invention 6, wherein the shoring device according to the present invention 6 is installed. The hollow rod is inserted into a newly installed lining pipe, the annular frame of the support device is supported in the newly installed lining pipe by supporting means, and the tip of the hollow rod is advanced into an injection hole of the lining pipe. A backfill material supply hose is connected to the base end connection port, and the backfill material is discharged from the backfill material discharge port near the distal end of the hollow rod, and the backfill material is transferred between the existing aging pipe and the lining pipe. This is a method of rehabilitating an old pipe that fills the gap.

According to an eighth aspect of the present invention, the backfill material is discharged from the backfill material discharge port near the tip of the pair of hollow rods while maintaining a balance, and the backfill material is removed from the existing aging. The method for rehabilitating an existing deteriorated pipe according to the seventh aspect of the present invention, wherein the gap between the pipe and the lining pipe is filled.

In the present invention, as the newly provided lining pipe, a spiral pipe formed by spirally winding a strip and connecting edges of adjacent strips may be used. May be used.

The band of the helical tube can be formed by extrusion molding or the like from vinyl chloride resin, polyethylene, polypropylene, polycarbonate, polyester, or a material obtained by reinforcing these synthetic resins with glass fibers.

In the present invention 3, the material of the closing member is not particularly limited as long as it can close the injection hole of the newly installed lining pipe. Synthetic resins such as polyethylene and polypropylene and metals can be used.

[Operation] In the shoring device in the existing pipe rehabilitation method of the present invention 1, at least a part of the support means for supporting the annular frame in the existing pipe is screwed into a screw hole provided in the annular frame. Male screw having a hollow rod provided on an outer surface thereof, and being rotatable from the inside to the outside from the inside of the annular frame by rotating the hollow rod, in the vicinity of the tip of the outside of the annular frame of the hollow rod. Is provided with a connection port at the base end inside the annular frame of the hollow rod, which can be connected to one end of the backfill material supply hose. The frame is newly inserted into the existing aging pipe, the annular frame is supported by the support means in the existing aging pipe and the new lining pipe, and the tip of the hollow rod is inserted through the injection hole of the lining pipe to be pressed against the inner surface of the aging pipe. ,During It can be injected filling the back-filling material into the gap between the existing old pipe and the lining pipe from back-filling material supply hose by connecting one end of the back-filling material supply hose to the proximal end of the connection port of the rod.

According to a second aspect of the present invention, in the method for rehabilitating an old pipe, the support device according to the first aspect of the present invention is inserted into a lining pipe newly installed in the old pipe, and an annular frame of the support apparatus is supported by the support means. The hollow rod is supported in the aging pipe and the lining pipe, and the distal end of the hollow rod is inserted into the injection hole of the lining pipe, penetrates and presses against the inner surface of the existing aging pipe, and a backing material is provided at a connection port at a base end of the hollow rod. Connect the supply hose,
The backfill material is discharged from the backfill material discharge port near the tip of the hollow rod, and the backfill material is filled into the gap between the existing aging pipe and the lining pipe. There is no need to attach or remove the nozzle attachment member.

The plug member according to the third aspect of the present invention comprises a plug and a plug receiving member. The external surface of the plug is provided with a male screw, and the plug receiving member is formed of a short cylinder having an internal surface provided with a female screw. Since the plug can be screwed into the female screw of the plug receiving member, the plug can be easily inserted by inserting the plug receiving member into the injection hole of the lining tube and screwing the plug into the plug receiving member. The hole can be closed.

[0023] In the support apparatus for rehabilitating an existing deteriorated pipe according to the fourth aspect of the present invention, at least a part of the support means for supporting the annular frame in the existing deteriorated pipe is provided on a plane perpendicular to the longitudinal direction of the existing deteriorated pipe. Are disposed in a symmetrical pair on the upper part of the upper part, and the pair of support means each have a hollow rod provided on the outer surface with an external thread screwed into a screw hole provided in the annular frame, By rotating the hollow rod, it is possible to advance and retreat from the inside of the annular frame to the outside, and a backfill material discharge port is provided near a tip of the hollow rod outside the annular frame. Since the connection end which can be connected to one end of the backing material supply hose is provided at the base end inside the annular frame, the annular frame is supported in the existing aging pipe and the lining pipe by the support means, and the hollow rod is Lie the tip Inserted into the injection hole of the tubing pipe, pressed into contact with the inner surface of the aging rod, and connected to one end of the backing material supply hose at the connection end at the base end of the hollow rod, from the backing material supply hose to the existing aging pipe and lining pipe The backfill material can be uniformly injected and filled in the gap between the backfill material.

According to a fifth aspect of the present invention, in the method for rehabilitating an old pipe, the support device according to the fourth aspect of the present invention is inserted into a lining pipe newly installed in the old pipe, and the annular frame of the support apparatus is installed by a support means. The hollow rod is supported in the pipe and the new lining pipe, and the distal end of the hollow rod is inserted into the injection hole of the lining pipe, penetrated and pressed against the inner surface of the existing aging pipe, and backfill material is supplied to the connection port at the base end of the hollow rod. A hose is connected, and the backfill material is discharged from the backfill material discharge port near the tip of the hollow rod, and the backfill material is filled in the gap between the existing aging pipe and the lining pipe. It is not necessary to mount and remove the mounting member of the backfill material injection nozzle.

According to a sixth aspect of the present invention, there is provided a shoring device for rehabilitating an existing deteriorated pipe, wherein a hollow rod is arranged in a symmetrical pair at an upper portion in a plane perpendicular to the longitudinal direction of the existing deteriorated pipe. A pair of hollow rods is provided on the outer surface with a male screw that is screwed into a screw hole provided in the annular frame, and is rotatable from the inside of the annular frame toward the injection hole of the lining pipe by rotating, A backfill discharge port is provided near the outer end of the annular frame, and a connection port that can be connected to one end of the backfill supply hose is provided at a base end inside the annular frame. , The annular frame is supported in the lining pipe by the supporting means, the tip of the hollow rod is advanced into the injection hole of the lining pipe, and the backing is connected to one end of the backing material supply hose at the connection port at the base end of the hollow rod. Material supply Scan from can be left evenly injected filled with back-filling material into the gap between the existing old pipe and lining tube.

According to a method for rehabilitating an existing deteriorated pipe according to a seventh aspect of the present invention, the support device according to the sixth aspect of the present invention is inserted into a lining pipe newly installed in the existing deteriorated pipe, and an annular frame of the support apparatus is newly installed by a support means. The hollow rod is supported in the lining pipe, the tip of the hollow rod is advanced into the injection hole of the lining pipe, a backing material supply hose is connected to a connection port at the base end of the hollow rod, and the back near the tip of the hollow rod is connected. The backfill material is discharged from the backfill material discharge port, and the backfill material is filled in the gap between the existing aging pipe and the lining pipe. No work is required.

According to an eighth aspect of the present invention, in the method for rehabilitating an aging pipe according to the seventh aspect, the backfill material is discharged from the backfill material discharge port near the tip of the pair of hollow rods while maintaining a balance.
By filling the gap between the existing deteriorated pipe and the lining pipe with the backfill material, the gap between the left and right of the existing deteriorated pipe and the lining pipe is modified to be uniform during the injection of the backfill material. Since the backfill material can be injected and filled into the gap, the gap between the left and right of the existing aging pipe and the lining pipe can be accurately and uniformly omitted in advance, so that the workability is excellent. In addition, unbalanced lifting of the lining tube during injection can be prevented.

[0028]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a mode of use of an example of a shoring device according to the present invention. In FIG. 1, A is a shoring device, 1 is an octagonal annular frame of the shoring device A, and the annular frame 1 is composed of a plurality of main members 11 and a bent joint 12. Is inserted into the socket of the bent joint 12 to form the annular frame 1. The size of the annular frame 1 can be changed by adjusting the insertion depth of the main member 11 into the bending joint 12 or by using the main members 11 having different lengths.

Reference numeral 2 denotes an existing aging pipe having a circular cross section to be rehabilitated, and reference numeral 3 denotes a lining pipe having a circular cross section newly installed in the existing aging pipe 2. The lining tube 3 is a spiral tube formed by spirally winding a belt-like body and connecting edges of adjacent belt-like bodies.

Reference numerals 13 and 14 denote support means provided on the annular frame 1. The support means 13 is for supporting the annular frame 1 in the lining tube 3. The support means 13 includes a rod 131 having an external thread provided on the outer surface thereof and a contact member 133 having a rod receiver 132. The rod 131 is an annular frame 1
Is screwed into a screw hole provided in the main member 11 of FIG.
A short-sided prism-shaped spanner hook 1311 is provided at a base end inside the annular frame 1 of the rod 131, and a distal end outside the annular frame 1 of the rod 131 is rotatably housed in a rod receiver 132.

A spanner hook 1311 at the base end of the rod 131
By rotating the rod 131 with a spanner.
The contact member 133 advances and retreats with respect to the annular frame 1. The contact member 133 is pressed against the inner surface of the lining tube 3 by screwing the rod 131, and when the contact member 133 is loosened, the contact member 133 is separated from the inner surface of the lining tube 3. Rod 1 of each support means 13
By screwing 31, the annular frame 1 is supported inside the lining tube 3.

The support means 14 is used to connect the annular frame 1 to the lining pipe 3
And for supporting it inside the existing aging pipe 2. The support means 14 includes a hollow rod 141 having an external thread provided on the outer surface thereof, and a contact member 143 having a screw hole fitting 142. The hollow rod 141 is screwed into a screw hole provided in the main member 11 of the annular frame 1 and the screw hole fitting 142. A connection port 1411 that can be connected to one end of the backing material supply hose 4 is provided at a base end inside the annular frame 1 of the hollow rod 141, and a discharge port 1412 is provided at a distal end outside the annular frame 1 of the hollow rod 141. Is provided. In addition, 41 is a coupler provided at one end of the hose 4, 42 is a valve connected to the coupler 41, and the valve 42 is connected to the connection port 1411.

By rotating the hollow rod 141, the rod 131 advances and retreats with respect to the annular frame 1 and the screw hole fitting 142, and the hollow rod 141 is screwed into the hollow rod 141.
1 is pressed into the inner surface of the existing aging pipe 2 through the injection hole 31 of the lining pipe 3, the annular frame 1 is supported on the existing aging pipe 2, and the screw hole fitting 142 is connected to the hollow rod 1.
By screwing the contact member into the lining tube 41, the contact member 143 is pressed against the inner surface of the lining tube 3, the annular frame 1 is supported inside the lining tube 3, and the space between the existing aging tube 2 and the lining tube 3 is maintained. Has become. Conversely, when the screw hole fitting 142 is loosened, the contact member 143 separates from the inner surface of the lining tube 3, and when the hollow rod 141 is loosened, the hollow rod 141 is loosened.
Is separated from the inner surface of the existing aging pipe 2.

Since the shoring device A of the present invention shown in FIG. 1 has the above structure, as shown in FIG. 1, the shoring device A is installed in the lining pipe 3 newly installed in the existing aging pipe 2. And the supporting means 13 supports the annular frame 1 of the support device A in the lining pipe 3, and the supporting means 14 supports the annular frame 1 in the existing aging pipe 2 and the lining pipe 3. The space between the aging pipe 2 and the lining pipe 3 can be maintained.

In such a state, as shown in FIG. 1, the connection port 1 at the base end of the hollow rod 141 of the support means 14 is formed.
A valve 42 provided at one end of the hose 4 is connected to 411, and the backing material 5 such as mortar is supplied from the hose 4 by opening the valve 42 as shown by an arrow a.
The gap between the existing aging pipe 2 and the lining pipe 3 is injected and filled from the discharge port 1412 at the tip of the rod 141.

FIG. 2 is a sectional view showing a mode of use of another example of the shoring device of the present invention. The shoring device B shown in FIG. 2 is used for the existing deteriorated pipe 2b and the lining pipe 3b having a rectangular cross section.

The octagonal annular frame 1b of the support device B is composed of a plurality of main members 11b and a bent joint 12b, and both ends of the main member 11b are inserted and fitted into the sockets of the bent joint 12b. Thereby, an annular frame 1b is formed.

In the annular frame 1b of the support device B, a screw hole is provided in the bent joint 12b, and the bent joint 12b
The rods 131 and the hollow rods 141 of the support means 13 and 14 are screwed into the screw holes. Rod receivers 132b, 142
b is provided so as to straddle the two contact members 133, 133, 143, 143. Two contact members 133, 13
3, 143, 143, contact members 134, 144
Are provided, and the intermediate contact members 134 and 144 are attached to the rod receivers 132b and 142b.

The annular frame 1b of the shoring device B is provided with two support means 14, 14 so as to form a symmetrical pair at an upper portion in a plane orthogonal to the longitudinal direction of the existing aging pipe 2b. A valve 42 of the hose 4 is connected to a connection port 1411 at the base end of the hollow rod 141 of each support means 14 via a coupler 41. Other structures of the shoring device B are the same as those of the shoring device A shown in FIG. 1, and thus the same reference numerals as those of the shoring device A shown in FIG.

Since the shoring device B of the present invention shown in FIG. 2 has the above structure, as shown in FIG. 2, the shoring device B is installed in the lining pipe 3b newly installed in the existing aging pipe 2b. And the annular frame 1 of the support device B
b is supported by the lining pipe 3b, and the existing deteriorated pipe 2 is supported.
b and the lining tube 3b can be maintained at an interval.

In such a state, as shown in FIG. 2, a valve 42 provided at one end of the hose 4 at a connection port 1411 at the base end of the hollow rod 141 is provided on each of the two support means 14 and 14. Are connected, and the valves 42 are opened, so that the backfill material is uniformly discharged from the hose 4 through the discharge port 1412 at the distal end of the hollow rod 141 of the support means 14 as shown by the arrow a, and the existing aging pipe The space between the lining tube 3b and the lining tube 3b is injected and filled so as to be uniform in the left and right directions.

FIG. 3 shows that, as shown in FIG. 1, the backfill material 5 is injected into the gap between the existing aged pipe 2 and the lining pipe 3, and then the injection hole 31 of the lining pipe 3 is closed by the closing member 6. It is an expanded sectional view which shows the state which perforated.

The lining tube 3 is formed by spirally winding a band 32. As shown in FIG. 4, the belt-shaped body 32 is provided with a connecting ridge 322 and a connecting ridge 323 near both ends of one surface of the substrate 321, and a rib 324 having a T-shaped cross section is protruded at an intermediate portion. A structure in which a reinforcing material having a W-shaped cross section is fitted between 324 is provided. When the connecting ridges 322 of the adjacent strips 32 are inserted and fitted into the connection ridges 323, the adjacent strips 32 are connected to each other to form a spiral tube. In addition, as shown in FIG. 4, the injection hole 31 of the lining tube 3 is pierced using a cylindrical saw 7 provided with a saw blade at the tip.

The closing member 6 comprises a plug 61 and a plug receiving member 62. As shown in FIG. 5, a male taper screw 611 is provided on the outer surface of the plug 61, and as shown in FIG. Is provided with a hexagonal hole 612 for screwing. The plug receiving member 62 is configured such that a locking edge 622 is provided at one end of a short cylinder having a female tapered screw 621 provided on the inner surface, and a flange 623 is provided at the other end.

As shown in FIGS. 3 and 5, the plug receiving member 62 of the plugging member 6 is attached to the injection hole 31 of the lining tube 3, and the male tapered screw 611 of the plug 61 is attached to the female tapered screw 621 of the plug receiving member 62. Lining pipe 3 by screwing
Injection hole 31 is closed. If a water-expandable bonding agent (trade name “Eslon High Sea 4” manufactured by Sekisui Chemical Co., Ltd.) is applied to the female taper screw 621 of the plug receiving member 62 or the male taper screw 611 of the plug body 61 in advance, the water stopping property is improved. It will be even higher.

In FIG. 3, reference numeral 51 denotes a viscous cement or a drainite filled in a trace where the rod 141 of the support device A has come off.

Since the plugging member 6 shown in FIGS. 3 and 5 includes the plug 61 and the plug receiving member 62, the plug receiving member 62 is attached to the injection hole 31 of the lining tube 3, and the plug 61 is attached to the plug receiving member 62. Can easily close the injection hole 31 of the lining tube 3.

FIG. 7 is a cross-sectional view showing a further embodiment of the use of the shoring device of the present invention. The shoring device C shown in FIG. 7 includes an existing deteriorated pipe 2c and a lining pipe 3c each having a substantially square cross section.
It is used for

The octagonal annular frame 1c of the support device C is composed of a plurality of main members 11c and a bent joint 12c, and both ends of the main member 11c are inserted and fitted into the sockets of the bent joint 12c. Thereby, an annular frame 1c is formed.

In the annular frame 1c of the support device C, a screw hole is provided in the bending joint 12c, and the bending joint 12c
The rod 131 of the supporting means 13 is screwed into the screw hole. The rod receiver 132c includes two contact members 133 and 133.
And straddle it. Two contact members 133, 1
A contact member 134 is provided in the middle of 33, and the intermediate contact member 134 is attached to the rod receiver 132c.

In the annular frame 1c of the shoring device C, two hollow rods 15, 15 are formed so as to form a symmetric pair with the upper corner in a plane orthogonal to the longitudinal direction of the existing aging pipe 2c. A valve 42 of the hose 4 is connected to a connection port 151 at the base end of each hollow rod 15 via a coupler 41. Each hollow rod 15 is provided on its outer surface with a male screw to be screwed into a screw hole provided in the main member 11c of the annular frame 1c, and is rotated from the inside of the annular frame 1c to a plane orthogonal to the longitudinal direction of the lining tube 3c. A back-filling material discharge port 152 is provided near the front end portion so as to be able to advance and retreat toward an injection hole provided in a symmetrical pair at the upper corner portion of the inside.

Since the shoring device C of the present invention shown in FIG. 7 has the structure described above, as shown in FIG. 7, the shoring device C is installed in the lining pipe 3c newly installed in the existing aging pipe 2c. Into the annular frame 1 of the support device C by the support means 13.
c is supported by the lining tube 3c.

In such a state, as shown in FIG. 8 (a), the two hollow rods 15 are rotated from the inside of the annular frames 12c, 12c to the injection holes of the lining tube 3c, respectively. The valves 42, 42 provided at one end of the hose 4 are connected to the connection ports 151, 151 at the respective base ends, and the valves 42, 42 are opened.
The backfill material is discharged into the gap between the existing deteriorated pipe 2c and the lining pipe 3c so that the left and right discharge amounts are substantially the same.

At this time, the amount of backfill material to be injected from each of the discharge ports 152, 152 to the left and right of the gap between the existing aging pipe 2c and the lining pipe 3c is controlled, and the amount of backfill material to be injected to the left and right is substantially the same. Manage to be. The right and left injection amounts may be directly controlled by the injection amount of the backfill material, or may be determined by a confirmation hole separately provided in the lining tube 3c.

Accordingly, as shown in FIG. 8B, when the left side of the gap between the existing aging pipe 2c and the lining pipe 3c is narrow, the height of the backfill material 5 injected into the gap is high. The force F acting to move the lining pipe 3c to the right is applied to the lining pipe 3c.
Correction is made so that the left and right gaps with c are uniform.

Conversely, as shown in FIG. 8C, when the right side of the gap between the existing aging pipe 2c and the lining pipe 3c is narrow, the height of the backfill material 5 injected into the gap is small. And the force F acting on the lining pipe 3c to move it to the right is applied, so that the existing aging pipe 2c and the lining pipe 3c
Is corrected so that the left and right gaps between them are uniform.

In this way, as shown in FIGS. 8D to 8F, while the left and right gaps between the existing deteriorated pipe 2c and the lining pipe 3c are corrected to be uniform, the left and right gaps are left and right within the gap. The backfill material can be injected and filled so as to be uniform. Thereby, the buoyancy acting in the left-right direction of the lining pipe 3c can be balanced, and unbalanced lifting of the lining pipe 3c during the backfill material injecting step can be prevented.

[Embodiment] As shown in FIG. 1, a new lining pipe 3 is inserted into the existing aging pipe 2, a support device A is inserted into the new lining pipe 3, and an injection hole 31 is inserted into the new lining pipe 3. And the support device A is supported by the support devices 13 and 14.
The backfill material 5 was supplied from the hose 4 to the rod 141 of the support device A, and the gap between the existing aging pipe 2 and the new lining pipe 3 was filled with the backfill material 5.

Thereafter, the rod 141 is connected to the new lining pipe 3.
And the support device A is removed from the newly installed lining pipe 3, and as shown in FIG.
Is filled with viscous cement or drainite 51, and the plug receiving member 6 is inserted into the injection hole 31 of the new lining pipe 3.
2 and the plug 61 was screwed into the plug receiving member 62 to close the injection hole 31 of the new lining pipe 3.

The internal diameter D1 of the existing pipe 2 is 1500 m.
m, the outer diameter D2 of the newly installed lining tube 3 is 1350 mm (FIG. 1), and the connecting ridge 322 and the connecting ridge 32 of the strip 32 are connected.
3 is 79 mm, the diameter D3 of the injection hole 31 of the new lining pipe 3 is 50 mm (FIG. 4), and the installation interval of the support device A in the new lining pipe 3 is about 2 m.

[Evaluation] When a water pressure of 2.0 kg / cm 2 was applied to the inside and outside of the newly installed lining pipe 3, no water leakage occurred.

The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration of the present invention is not limited to the illustrated embodiment, and the design changes may be made without departing from the gist of the present invention. Are included in the present invention.

The annular frame 1 may use an integrated annular frame instead of the coverage 11 and the bent joint 12 as in the embodiment shown in FIG. Also, the closing member 6
The attachment of the plug receiving member 62 to the injection hole 31 of the new lining pipe 3 is performed by fitting the plug receiving member 62 to the peripheral portion of the injection hole 31 as in the embodiment shown in FIGS. 62 may be bonded to the periphery of the injection hole 31.

[0064]

As described above, the supporting device in the existing pipe rehabilitation method of the present invention is as described above. Therefore, in use, the annular frame is inserted into the existing pipe, and the annular frame is supported by the support means. Supported inside the pipe and the newly installed lining pipe, insert the tip of the hollow rod into the injection hole of the new lining pipe, penetrate it and press it against the inner surface of the old rod, and connect it to one end of the backing material supply hose at the connection port at the base end of the hollow rod. By doing so, the backfill material can be injected and filled from the backfill material supply hose into the gap between the existing aging pipe and the new lining pipe.

Therefore, by installing a support device at an appropriate place in the new lining pipe, the backfill material can be injected and filled into the gap between the existing aging pipe and the new lining pipe, and the construction distance of the existing aging pipe can be reduced. Even if the length becomes long, the backfill material can be injected and filled over the entire area. Also, as before,
There is no need to weld or attach the mounting member of the backfill material injection nozzle to the injection hole of the new lining pipe by welding.

The existing pipe rehabilitation method according to the second aspect of the present invention is as described above, so that it is not necessary to mount and remove the member for mounting the backfill material injection nozzle as in the prior art. Can be shortened.

Since the closing member according to the third aspect of the present invention is as described above, it is easily used by attaching a plug receiving member to the injection hole of the newly installed lining pipe and screwing the plug into the plug receiving member. Since the injection hole can be closed, the construction period can be shortened.

The supporting device in the existing pipe rehabilitation method of the present invention 4 is as described above. Therefore, the annular frame is supported in the existing pipe and the lining pipe by the support means, and the tip of the hollow rod is lined with the lining pipe. Insert the hole into the injection hole and press it against the inner surface of the aging rod, and connect the end of the backing material supply hose to the connection port at the base end of the hollow rod to connect the existing aging pipe and lining pipe from the backing material supply hose. The backfill material can be uniformly injected and filled into the gaps between them.

Since the existing pipe rehabilitation method of the fifth aspect of the present invention is as described above, it is not necessary to mount and remove the mounting member of the backfill material injection nozzle as in the prior art.

Since the supporting device in the existing pipe rehabilitation method according to the sixth aspect of the present invention is as described above, the annular frame is supported in the lining pipe by the support means, and the tip of the hollow rod is inserted into the injection hole of the lining pipe. The backfill material supply hose is connected to one end of the backfill material supply hose at the connection end at the base end of the hollow rod, and the backfill material is injected uniformly from the backfill material supply hose into the gap between the existing aging pipe and the lining pipe. Can be filled.

Since the existing pipe rehabilitation method according to the seventh aspect of the present invention is as described above, it is not necessary to mount and remove the mounting member of the backfill material injection nozzle as in the prior art.

Since the existing pipe rehabilitation method according to the eighth aspect of the present invention is as described above, it is necessary to correct the left and right gaps between the existing pipe and the lining pipe during filling of the backfill material. The backfill material can be injected and filled in the gap, and the gap between the left and right of the existing aging pipe and the lining pipe can be precisely and uniformly omitted, so that the workability is excellent. Unbalanced lifting of the lining tube during injection can also be prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a use mode of an example of a shoring device according to the present invention.

FIG. 2 is a cross-sectional view showing a usage state of another example of the support device according to the present invention.

FIG. 3 is an enlarged sectional view showing a use mode of the closing member according to the present invention.

FIG. 4 is a cross-sectional view showing an embodiment in which an injection hole is formed in the lining tube.

FIG. 5 is an exploded cross-sectional view showing, in an enlarged manner, a use mode of the closing member according to the present invention shown in FIG. 3;

FIG. 6 is a bottom view of the plug receiving member of the closing member according to the present invention shown in FIG. 3;

FIG. 7 is a cross-sectional view showing a usage state of still another example of the shoring device according to the present invention.

8 (a) to 8 (f) are explanatory views of an existing deteriorated pipe rehabilitation method of the present invention using the shoring device shown in FIG. 7; It is a diagram.

FIG. 9 is an explanatory view showing a conventional old pipe rehabilitation method.

FIG. 10 is an explanatory view showing a conventional existing pipe rehabilitation method.

[Explanation of symbols]

 A, B, C Supporting equipment 1, 1b, 1c Annular frame 2, 2b, 2c Existing aging pipe 3, 2c, 3c Lining pipe 4 Hose 11, 11b, 11c Main member 12, 12b, 12c Bending joint 13, 14 Support Means 15, 141 Hollow rod 31 Injection hole 41 Coupler 42 Valve 1411 Connection port 152, 1412 Discharge port 131 Rod 132 Rod receiver 133, 143 Contact member

Claims (8)

[Claims] 1. An existing pipe rehabilitation method comprising: an annular frame inserted into a lining pipe newly installed in an existing pipe, and support means for supporting the annular frame in the existing pipe and the lining pipe. Wherein at least a part of the support means for supporting the annular frame in the existing aging pipe has a hollow rod provided on the outer surface with a male screw screwed into a screw hole provided in the annular frame. Rotating the hollow rod so that it can advance and retreat from the inside of the annular frame toward the outside, and a backfill material discharge port is provided near a tip of the hollow rod outside the annular frame; And a connection port for connecting to one end of the backfill material supply hose is provided at a base end inside the annular frame. 2. A method for rehabilitating an existing aging pipe using the shoring device according to claim 1, wherein the shoring device according to claim 1 is inserted into a lining pipe newly installed in the existing aging pipe, and The annular frame of the shoring device is supported by the supporting means in the existing deteriorated pipe and the lining pipe, and the tip of the hollow rod is inserted through the injection hole of the lining pipe and pressed against the inner surface of the existing deteriorated pipe. A backfill material supply hose is connected to the connection port at the base end of the hollow rod, and the backfill material is discharged from a backfill material discharge port near the distal end of the hollow rod, and the backfill material is connected to the existing aging pipe and the lining pipe. The existing pipe rehabilitation method characterized by filling the gap between the pipes. 3. A plugging member for closing an injection hole of a lining pipe in an existing aging pipe rehabilitation method, comprising a plug and a plug receiving member, wherein an external thread is provided on an outer surface of the plug, and the plug receiving member is provided. A plug member comprising a short cylinder having a female screw on an inner surface thereof, wherein a plug can be screwed into the female screw of the plug receiving member. 4. An existing aging having an annular frame inserted and installed in a lining pipe newly installed in an existing aging pipe having a substantially rectangular cross section, and support means for supporting the annular frame in the existing aging pipe and the lining pipe. A shoring device in a pipe rehabilitation method, wherein at least a part of support means for supporting the annular frame in an existing aging pipe is symmetrical with an upper part in a plane orthogonal to a longitudinal direction of the existing aging pipe. A pair of support means are provided, and the pair of support means each have a hollow rod provided on the outer surface with a male screw screwed into a screw hole provided in the annular frame, and rotating the hollow rod. A backfill material discharge port is provided near the outer end of the hollow frame of the hollow rod, and a base end of the hollow rod inside the annular frame. Backfill material in the department A shoring device in an existing aging pipe rehabilitation method, characterized in that it has a connection port that can be connected to one end of a supply hose. 5. A method for rehabilitating an old pipe using the support device according to claim 4, wherein the support device according to claim 4 is inserted into a lining pipe newly installed in the existing pipe. The annular frame of the shoring device is supported by the support means in the existing aging pipe and the new lining pipe, and the tip of the hollow rod is inserted through the injection hole of the lining pipe, and pressed into contact with the inner surface of the existing aging pipe. A backfill material supply hose is connected to the connection port at the base end of the rod, and the backfill material is discharged from a backfill material discharge port near the distal end of the hollow rod, and the backfill material is connected to the existing aging pipe and the lining pipe. An old pipe rehabilitation method characterized by filling gaps between the pipes. 6. A support in an existing pipe rehabilitation method having an annular frame inserted into a new lining pipe newly installed in an existing old pipe having a substantially rectangular cross section and support means for supporting the annular frame in the lining pipe. In the construction device, a hollow rod is arranged so as to form a symmetric pair in an upper part in a plane orthogonal to the longitudinal direction of the existing aging pipe, and the pair of hollow rods is provided in the annular frame. A male screw to be screwed into the screw hole provided is provided on the outer surface, and is rotatable so that it can advance and retreat from the inside of the annular frame toward the injection hole of the lining tube. And a connection port for connecting to one end of a backing material supply hose is provided at a base end inside the annular frame, the support being provided in an existing pipe rehabilitation method. apparatus . 7. A method for rehabilitating an existing aging pipe using the shoring device according to claim 6, wherein the shoring device according to claim 6 is inserted into a lining pipe newly installed in the existing aging pipe. The annular frame of the shoring device is supported by a support means in the newly provided lining pipe, the tip of the hollow rod is advanced into the injection hole of the lining pipe, and the backing material supply hose is connected to the connection port at the base end of the hollow rod. And a backfill material is discharged from a backfill material discharge port near the tip of the hollow rod, and the backfill material is filled in a gap between the existing deteriorated pipe and the lining pipe. Pipe rehabilitation method. 8. The backfill material is discharged from the backfill material discharge port near the tip of the pair of hollow rods while maintaining a balance, and the backfill material is filled in a gap between the existing deteriorated pipe and the lining pipe. The method for rehabilitating an existing deteriorated pipe according to claim 7, wherein the pipe is rehabilitated.