JPH11188794A - Method for executing lining of tube in sewer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for executing a lining tube in a sewer for executing simultaneous laying of the lining tube and a cable in an existing sewer without applying an external force such as a twisting of the cable after the laying. SOLUTION: The method for executing a lining tube in a sewer comprises the steps of spirally winding a profile 1 in an existing sewer P to form a lining tube R, disposing a cable coil 4 in the sewer P, supplying the cable 5 from the coil 4 between the sewer P and the tube R (or an inner surface of the tube R) as the formation of the lining tube is proceeded, and continuously laying the cable 5 together with the manufacture of the tube P.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for installing a lining pipe on an inner surface of an existing sewer such as a sewer pipe, a water pipe or a gas pipe, and more particularly to a long strip-shaped member. The present invention relates to a method for constructing a lining pipe in a sewer in which a lining pipe is formed by spirally winding a profile formed from the profile and a cable such as a communication cable, an electric wire, or an optical fiber cable is provided in the existing sewer.

[0002]

2. Description of the Related Art As a method of constructing a lining pipe on the inner surface of an existing sewer such as a sewer pipe, a water pipe or a gas pipe, the following methods have been conventionally proposed. Strip (profile) with mating part on side edge
Is spirally wound to form a lining pipe, and the produced lining pipe is sequentially fed into an existing pipe (former winding method; Japanese Patent Publication No. Sho 62-13170). A tubular body is formed by spirally winding a profile provided with a fitting portion on a side edge portion in an existing culvert using a pipe-making machine, and joining the side edge portions of mutually adjacent strip-shaped members. Then, a method of lining the inner peripheral surface of the conduit with the tubular body (Japanese Patent Laid-Open No. 8-261363). The strip (profile) is spirally wound in the existing culvert using a pipe-making machine, and the adjacent winding of the strip is performed by the mortise-like joining ears and joining strips formed on the side edges of the strip. Method of joining side edges (Japanese Unexamined Patent Publication No.
No. 100927).

[0003] In each of the above construction methods, a cable such as a communication cable, an electric wire or an optical fiber cable is inserted between the lining pipe and the existing pipe, and then the backing material is injected by sealing the pipe opening. Then, a cable can be laid between the lining pipe and the existing pipe.

[0004]

In the above-mentioned lining pipe construction method, in the method of (1), since the pipes which are sequentially produced go forward in the existing pipe while rotating, when laying cables and the like together. Requires separate pre-laying. That is, the lining pipe and the cable cannot be laid at the same time.

[0005] In the case of the construction method, no cable laying mechanism is provided. For example, when a cable coil is directly installed on a regulating frame of a pipe-making machine, the pipe shaft is rotated and supplied in a spiral shape. When the cable is laid in the direction, the profile and the cable are intersected, and it becomes difficult to supply the cable to the gap between the existing sewer and the lining.

In the case of this method, a separate step of installing a spacer in advance is required. No cable laying mechanism is provided as in the other construction methods. Furthermore, in this method, it is conceivable to install a cable coil in the same manner as the coil of the connecting strip. However, the installation site (rotary shaft) of the coil of the connecting strip rotates in synchronization with the pipe making. However, the cable is undesirably twisted.

The present invention has been made in view of such circumstances, and it is possible to simultaneously lay a lining pipe and a cable in an existing culvert, and to perform a construction in which external force such as twisting is not applied to the laid cable. It is an object of the present invention to provide a lining pipe construction method in a sewer that can be performed.

[0008]

In order to achieve the above object, a method for constructing a lining pipe according to the present invention is to spirally wind a profile formed of a long strip-shaped member in an existing pipe. Turn to form a lining pipe, place a cable coil in the existing culvert, supply the cable from the cable drum as the lining pipe formation progresses, and connect between the existing culvert and the lining pipe, or the lining pipe. It is characterized by laying cables on the inner surface of the.

According to the lining pipe construction method of the present invention,
The cables are sequentially laid between the inner surface of the lining pipe or the existing pipe and the lining pipe according to the lining pipe production speed, so it is possible to continuously lay the cable together with the pipe production. Become.

Here, in the lining pipe construction method of the present invention, as shown in FIG. 6, the cable coil 4 is provided at an immovable position (for example, the regulating frame 11) of the pipe making machine 10 ', or as shown in FIG. As illustrated, by a method in which the cable coil 4 is mounted on a carriage 30 arranged in the existing sewer P and is advanced together with the formation of the lining pipe,
If the cable 5 is supplied between the existing sewer P and the lining pipe R (or the inner surface of the lining pipe R), the cable 5 can be installed along the longitudinal direction, and the cable 5 does not become spiral. I'm done.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing an example of a profile (reblock type) used for construction of a lining pipe, and FIG. 2 is a front view showing the structure of a pipe making machine used for construction of a lining pipe. FIG. 3 is an explanatory view of an embodiment of a method for constructing a lining pipe in a sewer according to the present invention. Profile The profile used in the present embodiment is composed of a band-shaped member 2 and a reinforcing member 3 as shown in FIGS. 1 (A) and 1 (B).

The belt-shaped member 2 is a member formed by forming a long band of hard vinyl chloride or the like. A plurality of ribs 21 are formed on the outer surface thereof along the longitudinal direction, and both ends thereof are respectively inward and outward. Joints 2a, 2b that overlap and engage
Are formed. In the vicinity of the joint 2b, a packing 22 for securing the seal of the joint is provided. The reinforcing member 3 is a metal (for example, steel) long strip-shaped member processed into a W-shaped cross section.

The profile 1 having the above structure is
It is wound around a drum D (see FIG. 3) in a state where the reinforcing member 3 is fitted between the ribs 21 of the belt-shaped member 2, and supplied to a construction site in this state. As shown in FIG. 2, a pipe-making machine 10 used for construction of a pipe-making machine lining pipe is provided on a rectangular annular regulating frame 11 at a predetermined interval.
A molding frame 13 having an annular structure composed of guide rollers 12 arranged at an angle and links 13a interconnecting the guide rollers 12.
And a joining mechanism 14 disposed on the molding frame 13.
It is mainly composed by

The joining mechanism 14 includes an outer roller 14a, an inner roller 14b, and a hydraulic motor 14 for driving them.
c is provided, and by driving the rollers 14a and 14b in a state where the profile 1 is sandwiched between the outer roller 14a and the inner roller 14b (see FIG. 4), the pipe making machine as a whole is Moving around the inside, spirally winding the profile 1 and proceeding, joining the joining portions 2a and 2b of the profile 1 in the course of the traveling,
It is configured to form a lining tube having a rectangular cross section (see FIG. 5). In this embodiment, as shown in FIG. 3, a drum D (inside-out type) around which the profile 1 is wound is disposed on the upstream manhole Q1 side, and a power source G is disposed on the downstream manhole Q2 side, as shown in FIG. The lining pipe is made from the side to the downstream side.

The procedure for producing the lining pipe is as follows. First, the pipe producing machine 10, its hydraulic unit 20, and the carriage 30 on which the cable coil 4 is mounted are connected to the existing culvert P to be rehabilitated through the manhole Q1. Carry in. Next, the profile 1 is drawn into the manhole Q1,
In 1, the profile 1 is manually wound several times (about three times) to produce a lining tube (this is referred to as a starting lining tube), and the cable 5 is taken out from the cable coil 4, and the tip portion is taken out. Fix to the target position.

In the above initial setting,
The circumference of the inner surface of the starting lining pipe is set to be equal to the circumference of the pipe making machine 10. Further, the starting lining pipe is fixed to the sewer P so that the starting lining pipe does not move (rotate, etc.), or a weight having an appropriate thickness is installed at the end of the starting lining pipe. deep.

Next, the pipe making machine 10 is installed inside the starting lining pipe, and the joining mechanism 14 of the pipe making machine 10 is set in a predetermined state at the front edge of the starting lining pipe. The ten joining mechanisms 14 are driven. By driving of the joining mechanism 14, as shown in FIG. 4, the newly supplied profile 1 is connected to the starting lining pipe by the narrow attachment force between the outer roller 14a and the inner roller 14b so that the joining is in contact with each other. By joining the parts 2a and 2b,
Joined to the starting lining tube. At the same time, the entire pipe-making machine 10 revolves in the circumferential direction of the culvert P, and advances in the pipe axis direction of the existing culvert P. With the movement of the pipe-making machine 10, the profile 1 spirals. The new profile 1 is sequentially joined and the lining pipe R is constructed. At the same time, while moving the cart 30 on which the cable coil 4 is mounted in accordance with the advance of the pipe-making machine 10, the cable 5 is transferred from the cable coil 4 to the inner wall surface (the ceiling) of the lining pipe R and the existing sewer P. Surface). In supplying the profile 1 described above, the drum D installed on the ground is rotated continuously or intermittently according to the number of turns of the joining mechanism unit 14 to prevent the profile 1 from being twisted. .

After the pipe forming operation of the lining pipe R is completed over the entire length of the existing sewer P, the profile 1
Is cut, and the pipe making machine 10 is disassembled and lifted to the ground. Also, the cable coil 4 and the carriage 30 are removed at the same time.
Thereafter, a backfill material 7 (FIG. 5) such as cement milk is injected into a gap between the lining pipe R and the existing sewer P. If there is a possibility that buckling breakage or the like may occur in the lining pipe R when the backfill material is injected, a support or the like in the lining pipe R is provided.

In the construction method described above, the cable 5 may be forcibly supplied from the carriage 30 using a supply facility, or may be naturally supplied by the traction force of the carriage 30. The cable 5 may be naturally disposed above the lining pipe R, or may be forcibly fixed to the lining pipe R or the wall surface of the existing sewer P with an anchor or the like. Further, the movement of the tube making machine 10 in the tube axis direction may be performed by a separately provided movement drive source.

FIG. 6 is an explanatory view of another embodiment of the lining pipe construction method of the present invention. In this embodiment, as a pipe-making machine, as shown in FIGS. 6 and 7, two regulating frames 11 and 11 are provided before and after in the pipe-making direction.
And the regulating frame 11 on the front side thereof
In addition, there is a feature in that the lining pipe R is manufactured using a pipe-making machine 10 ′ having a structure in which the cable coil 4 is attached via a support arm 15. Profile 1 and cable 5 during pipe production
Can be avoided. In the pipe making machine 10 ', the guide rollers 12,... Disposed on the front and rear regulating frames are connected to each other as shown in FIG.

In this embodiment, as in the previous embodiment, the profile 1 having the structure shown in FIG.
Using the same procedure as the construction method shown in FIG.
A lining pipe R is formed in the existing sewer P, and the cable 5 is supplied from the cable coil 4 installed on the regulating frame 11 of the pipe-making machine 10 'in accordance with the progress of the formation of the lining pipe. The cable 5 is laid in the gap between the lining pipe R and the lining pipe R.

FIGS. 9A to 9C are explanatory views of another embodiment of the lining pipe construction method of the present invention.

The embodiment shown in FIG. 9 (A) is an example in which the cable 5 is laid on the inner surface of the lining pipe R. The cable coil 4 is installed on the regulating frame 11 of the pipe making machine 10 ', and the lining pipe is installed. With the formation of R, the cable coil 4
, The lining pipe R and the cable 5 are simultaneously laid in the existing culvert P by sequentially supplying the cable 5 to the upper inner surface of the lining pipe R.

FIGS. 9B and 9C show profiles 1
Of the lining pipe R
An example in the case of performing pipe making is shown.

Of these two examples, in the construction method shown in (B), the cable coil 4 is arranged in front of the pipe making machine 10 (supported together with the drum D 'of the profile on the regulating frame 11), and the cable coil 4 4 to cable 5
Is supplied to the gap between the lining pipe R for pipe production and the existing sewer P to lay the cable 5. In the construction method shown in (C), the cable coil 4
Is arranged (supported by the regulating frame 11), and the cable 5 is supplied from the cable coil 4 to the upper inner surface of the lining pipe R for pipe production, and the cable 5 is laid.

Here, in the above embodiment, an example using a profile (reblock type) is shown, but the present invention is not limited to this, and a two-piece type profile 101 as shown in FIG. It can also be implemented using.

The profile 101 shown in FIG.
In the figure, joining portions 102a are formed at both ends in the width direction of the band-shaped member (strip) 102, and at the time of joining, as shown in FIG.
a in a state where the side surfaces of
The profile 101 is joined to each other by fitting a fitting member (joining strip) 103 into 2a.

Such a two-piece profile 10
In the case of producing a lining pipe by using
02 in a spiral shape, and immediately thereafter, the fitting member 1
03 is arranged at the position where the joining portion 102a is fitted, and as shown in FIG.
Of the joint member 102a by pressing against the inner surface of the
The fitting member 103 is inserted into the belt-like member 10 immediately before the ground work or the pipe making work.
The pipe can be fitted into one of the two to perform pipe making. Further, regarding the fitting member 103,
A method of feeding the sheet from the ground separately from the belt-shaped member 102 or arranging the coil in the vicinity of a pipe making machine and supplying the coil to the fitting position is conceivable.

In the case where the lining pipe is manufactured using the two-piece type profile 101, the above-mentioned FIG. 3, FIG. 6 or FIG. 9 (A), (B),
By the same construction method as the method shown in (C), a cable can be laid between the lining pipe and the existing culvert or on the upper inner surface of the lining pipe in accordance with the formation of the lining pipe.

However, since the two-piece type profile is a type that is joined to an existing sewer by pressing it against a wall surface,
When laying a cable between a lining pipe and an existing culvert, as shown in FIG. 12, a groove work is performed on a wall surface (ceiling surface) of the existing culvert P ′ before producing the lining pipe. The cable 5 is laid by a construction method of supplying the cable 5 into the groove 6, or the profile 101 is made of a synthetic resin without such a groove construction. The construction method of laying the cable 5 between the lining pipe R and the existing sewer P 'by utilizing the property (see FIG. 13) may be adopted.

Here, in the above embodiment, the case where a lining pipe having a rectangular cross section is constructed is described. However, the shape is not particularly limited, and the lining pipe has a horseshoe cross section having a corner portion. The present invention can also be applied to the construction of a pipe or a lining pipe having a circular or elliptical cross section.

The profile used in the lining pipe construction method of the present invention is not particularly limited. However, in consideration of cost, moldability, etc., a synthetic resin such as hard vinyl chloride, polyethylene, polypropylene, or fiber reinforced plastic is extruded. Those formed by molding or the like are preferable.

Further, in the lining pipe construction method of the present invention, as a profile, a flat plate made of iron, stainless steel, aluminum or the like or a flat plate with projections is mixed into a synthetic resin such as hard vinyl chloride, and these are simultaneously extruded. A built-in profile may be used.

In the lining pipe construction method of the present invention, the reinforcing material to be combined with the profile is not particularly limited as long as it can be inserted into the rib of the profile. A shape such as an inverted U shape is exemplified. As the material of the reinforcing material, in addition to stainless steel, iron or other metal whose surface is coated (galvanized or the like) for corrosion prevention may be used.

The reinforcing material may be inserted on the outer surface or the inner surface of the lining pipe. However, when the reinforcing material is inserted into the inner surface of the pipe (when the profile is a two-piece type or the like), the reinforcing material is inserted into the surface in consideration of the influence of corrosion and the like. It is necessary to perform anticorrosion treatment and the like.
Further, when performing pipe making, since the profile is spirally arranged in the existing pipe, the reinforcing material is supplied in a state of being fitted to the profile in advance due to its construction,
Preferably, a built-in product (co-extruded product) is used.

In the lining pipe construction method of the present invention, as a sealing material for securing a seal at a joint portion of a profile, a hot-melt type adhesive, an extruded elastomer at the same time, and the like can be given.

Regarding the pipe making machine used in the lining pipe construction method of the present invention, the outer roller 14a is formed in a fin shape as shown in FIG. 7 so that the joining mechanism 14 can be engaged between the ribs of the profile 1. The opposed inner roller 14b is preferably a flat roller coated with rubber or the like having a large frictional resistance. Furthermore, when it is necessary to reliably transmit the rotational driving force of the outer and inner rollers to the profile, knurling or the like may be performed between the fins (the portion that contacts the rib head of the profile). preferable. The rollers and the drive motor may be connected directly, or may be connected via several gears when the fitting resistance is large. The drive source for rotating the roller may be another drive source using electricity, air, or the like in addition to hydraulic pressure, or may be manual. However, when a separate drive source is provided, it is necessary to connect a hose, a cord, and the like by a swivel joint or the like so as not to be affected by rotation.

[0039]

As described above, according to the lining pipe construction method of the present invention, the lining pipe is formed by spirally winding the profile in the existing pipe, and the cable coil is formed in the existing pipe. Arrange the cable from the cable coil as the lining tube formation progresses,
Since the cable is supplied between the existing sewer and the lining pipe or to the inner surface of the lining pipe, the cable can be continuously laid along with the lining pipe production. In addition, the cable can be supplied without being affected by the rotational supply of the profile, and construction can be performed in which an external force such as twisting is not applied to the cable after laying.

Further, since the lining tube does not rotate,
The cable set position can be determined immediately after the lining pipe is started to be laid, and continuous work becomes possible. In addition, since the pipe is manufactured in a sewer, even if the existing sewer has a large bend or a flat part, it is easy to locally cope with the lining pipe (temporary stop of pipe production, welding, etc.). In addition, cable connection work can also be performed at the pipe making position in the existing sewer.

Here, in the lining pipe construction method of the present invention, the cable coil is provided at an immovable position (for example, a regulation frame) of the pipe making machine, or the cable coil is placed on a bogie arranged in the existing sewer and the lining is installed. If the cable is supplied between the existing sewer and the lining pipe (or the inner surface of the lining pipe) by the method of proceeding with the pipe formation, the cable can be installed in the longitudinal direction and the cable can be spirally wound. And the cable can be laid in a better condition.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a profile used for construction of a lining pipe.

FIG. 2 is a front view showing the structure of a pipe making machine used for installing a lining pipe.

FIG. 3 is an explanatory view of an embodiment of the lining pipe construction method of the present invention.

FIG. 4 is an explanatory view of a method for joining the profiles shown in FIG. 1;

FIG. 5 is a view taken in the direction of arrows ZZ in FIG. 3;

FIG. 6 is an explanatory view of another embodiment of the lining pipe construction method of the present invention.

FIG. 7 is a view taken along the line XX of FIG. 2;

FIG. 8 is a view taken in the direction of arrows Y in FIG. 2;

FIG. 9 is an explanatory view of another embodiment of the lining pipe construction method of the present invention.

FIG. 10 is a diagram showing another example of a profile used for construction of a lining pipe.

FIG. 11 is an explanatory view of a method for joining the profiles shown in FIG. 10;

FIG. 12 is an explanatory view of an embodiment of a lining pipe construction method using the profile shown in FIG. 10;

13 is an explanatory view of another embodiment of the lining pipe construction method using the profile shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 101 Profile 2, 102 Band-shaped member 2a, 2b Joint 102a Joint 21 Rib 103 Fitting member 3 Reinforcement member 4 Cable coil 5 Cable 10 Pipe-forming machine 11 Regulatory frame 12 Guide roller 13 Molding frame 14 Joining mechanism P Existing Sewer R lining pipe

Continued on the front page (51) Int.Cl. ⁶ Identification code FI H02G 9/06 H02G 9/06 Z

Claims (3)

[Claims] 1. A method for constructing a lining pipe on an inner surface of an existing sewer, wherein a profile formed of a long strip-shaped band member is spirally wound in the existing sewer to form a lining pipe. Forming and arranging the cable coil in the existing sewer, supplying the cable from the cable coil as the lining pipe formation progresses, and connecting the cable between the existing sewer and the lining pipe or on the inner surface of the lining pipe A method for constructing a lining pipe in a sewer characterized by laying. 2. The method according to claim 1, wherein the cable coil is provided at an immovable position of the pipe making machine. 3. The method according to claim 1, wherein the cable coil is mounted on a bogie arranged in the existing sewer and proceeds with the formation of the lining pipe.