JP2000303798A - Device for lining existing tunnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the period and cost of construction work by eliminating the need to convey lining into an existing tunnel twice. SOLUTION: In this device by which lining pipes 2 each having a cross section slightly smaller than and analogous to the inner surface of an existing tunnel 1 are conveyed into the existing tunnel 1 to line the existing tunnel 1, the interval between the front wheel 18 and the rear wheel 19 of a truck 11 traveling within the existing tunnel 1 is set to be greater than the unit length L of the lining pipe 2, and a plurality of telescopic arms 15 supporting the lining pipe 2 from inside are provided between the front wheel 18 and the rear wheel 19 of the truck 11. A position alignment means 20 is provided for aligning the position of the front end 2a of the lining pipe 2 with the position of the rear end 2b of another leading lining pipe 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a horizontal pile (hereinafter simply referred to as "existing tunnel") used for water supply and sewage, industrial water supply, agricultural water supply, etc., which is deteriorated by long-term use. In this case, the present invention relates to a technique for repairing an existing tunnel by lining a steel plate or the like on the inner surface thereof.

[0002]

2. Description of the Related Art As this type of lining device, a device disclosed in Japanese Patent Publication No. 3-68200 has been known. As shown in FIGS. 2 (A) and 2 (B), the lining device 10 is mounted on a bogie 11 traveling in the existing tunnel 1.
A pedestal 13 which is raised and lowered by a jack 12 is provided.
3, left and right hooks 14, 14 and 17, 17 and an upholstery holder 16 having a plurality of telescopic arms 15 are detachably mounted, and the lower upholsteries 3 a and 3 b and the upper upholstery 4 are individually mounted. It is configured to be held and sequentially carried into the existing tunnel 1 and joined together. In FIGS. 2A and 2B, reference numeral 18 denotes wheels, 25 denotes an operation handle for aligning the gantry 13 to the left and right, and 40 denotes a spacer.

[0003] The lining of the lining material on the inner surface of the existing tunnel is as follows:
It is constructed as follows. For example, as shown in FIG. 3, a steel sheet lining material 2 having a similar cross-section slightly smaller than the inner surface of the existing tunnel 1 is prepared by dividing it into left and right lower lining materials 3 a and 3 b and upper lining material 4 in advance. Keep it. Here, FIG. 3 is a longitudinal sectional front view showing a state in which the above-mentioned lining material 2 is lining the existing tunnel 1 and the repair is completed, and reference numeral 31 in FIG. Reference numeral 41 denotes a filler such as cement milk which fills a gap between the existing tunnel 1 and the lining material 2.

[0004] As shown in FIG.
0 pair of left and right hooks 14
a and 3b, and the lower hooks 17 and 17 are used to hook the lower cladding members 3a and 3b with the respective hooks 34 and 34, and are carried into the existing tunnel 1. I do.
Then, the underlaying members 3a and 3b laid earlier and the end faces thereof are aligned and welded.

[0005] As shown in FIG.
In addition, the plurality of telescopic arms 15 carry the upholstery material 4 and the hooks 35 of the upholstery material 4 are hooked by a pair of left and right hooks 14, respectively. Lumber 4
And the upper lining material 4 is placed on the left and right sides of the lower lining materials 3a and 3b.
The left and right sides are aligned. Then, the upper lining material 4 previously laid and the end surfaces thereof are aligned and each joint surface is welded. In addition, the above-mentioned hooks 33 to 35 which are no longer needed are melted. Finally, as shown in FIG. 3, a hardening material 41 such as cement milk is filled in a gap between the existing tunnel 1 and the lining material 2.

[0006]

In the above prior art, since the lining material 2 is divided into the lower lining materials 3a and 3b and the upper lining material 4, the lining material 2 can be inserted into the existing tunnel 1. Loading is twice as troublesome, and after laying the lower lining materials 3a and 3b, the left and right sides of the upper lining material 4 are aligned and the upper lining material 4 laid first is laid.
However, since the end faces are aligned and the joint surfaces are welded to each other, it takes time to weld the position alignment and the joint surfaces with each other, so that the construction period is prolonged as a whole and the cost is high.

The present invention has been made in view of such circumstances, and (a) prevents the lining material from being taken into the existing tunnel twice (b) shortens the construction period and costs A technical issue is to reduce the emissions.

[0008]

In order to solve the above-mentioned problems, the present invention is configured as follows. The invention according to claim 1 is a lining device for carrying a lining pipe 2 having a similar cross-section slightly smaller than the inner surface of the existing tunnel 1 into the existing tunnel 1 and lining the same. 1
The distance between the front wheel 18 and the rear wheel 19 of the trolley 11 traveling inside is set to be larger than the unit length L of the lining tube 2, and the lining between the front wheel 18 and the rear wheel 19 of the trolley 11 is set. Tube material 2
A plurality of telescopic arms 15 for supporting the inner lining 2 from the inside, and a position aligning means 20 for aligning the front end 2a of the lining 2 and the rear end 2b of the preceding lining 2 are provided. It is assumed that.

According to a second aspect of the present invention, in the lining device for an existing tunnel according to the first aspect, the position aligning means 20 includes a machine frame 21 fixed to the carriage 11.
The shaft center Z of the lining tube 2 is provided on the machine frame 21 so as to be extendable and contractible, and extends over the inner peripheral surface of the front end of the lining tube 2 and the inner peripheral surface of the rear end of the preceding lining tube 2. It has a plurality of telescopic arms 22 that project radially as the center,
The front wheel 18 of the carriage 11 is configured to float in conjunction with the extension of the telescopic arm 22.

According to a third aspect of the present invention, in the lining device for an existing tunnel according to the first or second aspect, a front wheel 18a that contacts the preceding lining pipe 2 is provided in front of the front wheel 18. The front wheel 18 and the preceding wheel 18a are configured to be switchable.

According to a fourth aspect of the present invention, in the lining device for an existing tunnel according to any one of the first to third aspects, the rear wheel 19 of the bogie 11 is configured as a driving wheel for traveling. It is characterized by the following.

[0012]

According to the present invention, the following functions and effects can be obtained. (A) In the invention described in claim 1, the lining tube 2 having a similar cross section slightly smaller than the inner surface of the existing tunnel 1 is carried into the existing tunnel 1 and lined, so that the lining tube is carried in. Only needs to be done once. That is, in the conventional example in which the lining tubing is divided into a plurality of pieces, it is troublesome to carry in the lining tubing twice, but the present invention can solve such a disadvantage. (B) In addition, the lined tubing 2 having a unit length L may be carried into the existing tunnel 1 and aligned by the position aligning means 20, and the end faces thereof may be joined. Can also be significantly reduced.

(C) According to the second aspect of the invention, since the position adjusting means 20 is provided with a plurality of telescopic arms 22 projecting radially around the axis Z of the lining tube 2,
These telescopic arms 22 extend radially around the axis Z of the lining tube 2 over the inner peripheral surface of the front end portion of the lining tube 2 and the inner peripheral surface of the rear end portion of the lining tube 2 previously lining. In addition, by raising the front wheel 18 of the carriage 11 in conjunction with the extension of the telescopic arm 22, the front end 2a of the lining tube 2 carried in later is changed to the rear end 2b of the preceding lining tube 2
And position alignment. That is, it is extremely easy to align the front end of the sequentially lined tubing with the rear end of the previously lined lining, so that the sequentially lined lining is easily joined.

(D) According to the third aspect of the present invention, a front wheel 18a is provided in front of the front wheel 18 so as to be in contact with the preceding lining tube 2, so that the front wheel 18 and the front wheel 18a can be switched. As a result, there is a step between the existing tunnel 1 and the preceding lining pipe 2, but it is possible to easily jump over the step. That is, when the lining tube 2 is carried into the existing tunnel 1, the front wheel 18 and the rear wheel 19 are in contact with the existing tunnel 1. At the end of loading, the front wheel 18 and the preceding wheel 18a are switched,
The preceding wheel 18a is brought into contact with the preceding lining tube 2. As a result, the preceding wheel 18a is connected to the existing tunnel 1
And jumps over a step between the preceding lining tube 2 and the rear end surface of the preceding lining tube 2 and the leading end surface of the succeeding lining tube 2 to abut and stop.

(E) In the invention described in claim 4, since the rear wheel 19 of the bogie 11 is configured as a drive wheel for traveling, the bogie 11 has a self-propelling ability and does not require towing by a towing vehicle or the like. It is very convenient.

[0016]

Embodiments of the present invention will be described below in more detail with reference to the drawings. FIG. 1 shows an existing tunnel lining device according to an embodiment of the present invention, and FIG.
1B is a side view of the lining device, FIG. 1B is a vertical sectional view taken along line bb in FIG. 1A, and the left half in FIG.
1A is a vertical sectional view taken along line cc of FIG. 1A, and the right half of FIG. 1C is a vertical sectional view taken along line dd of FIG. 1A.

The existing tunnel lining device 10 according to the present invention
As shown in FIG. 1A, this is a lining device for carrying a lining tube 2 having a similar cross section slightly smaller than the inner surface of the existing tunnel 1 into the existing tunnel 1 and lining the same. A carriage 11 running in the existing tunnel 1, a plurality of telescopic arms 15 carrying the lining tube 2 from inside, and a rear end 2b of the lining tube 2 preceding the front end 2a of the lining tube 2 And a hydraulic unit 25 for driving and operating the hydraulic circuit.

The distance between the front wheel 18 and the rear wheel 19 of the bogie 11 is set to be larger than the unit length L of the lining tube 2. A pair of front and rear gate-shaped frames 16, 16 are erected between the front wheel 18 and the rear wheel 19, and each of these gate-shaped frames 16 has the above-mentioned gate-shaped frame 16, as shown in FIG. Telescopic arm 1 for supporting lining tube 2 upward from inside
5 and 15 are provided with telescopic arms 15 and 15 which are supported in the left-right direction. This is intended to prevent the lining tube 2 from being deformed by its own weight when the lining tube 2 is carried into the existing tunnel 1. Incidentally, according to the cart 11, the inner diameter is 2.4 to 3.5 m, and the unit length is 3 to 6.
m, liner tubing weighing 4 to 10 tons.

As shown in FIG. 1 (C), the position aligning means 20 is provided with a machine frame 21 erected on the carriage 11.
The shaft center Z of the lining tube 2 is provided on the machine frame 21 so as to be extendable and contractible, and extends over the inner peripheral surface of the front end of the lining tube 2 and the inner peripheral surface of the rear end of the preceding lining tube 2. It has six telescopic arms 22 that project radially from the center. This is intended to facilitate positional alignment between the front end 2a of the lined tubing 2 to be sequentially carried in and the rear end 2b of the lined tubing 2 previously lined.

A front wheel 18a is provided in front of the front wheel 18 so as to be in contact with the preceding lining tube 2.
The hydraulic cylinders 8 and the leading wheels 18a are configured to be switched and used by hydraulic cylinders 23 and 24 that can be jacked up. This is intended to allow a step between the existing tunnel 1 and the preceding lining tube material 2 to allow the bogie 11 to easily advance over the step.

The rear wheel 19 of the carriage 11 is mounted on the hydraulic motor 2
6 and is connected as a driving wheel for traveling. This is intended to eliminate the need for towing by a towing vehicle or the like by providing the truck 11 with a self-propelled ability. Incidentally, the cart 11 has a slope climbing ability with a maximum gradient of 5 °. The telescopic arms 15, 22 and the front wheel 1
8, the leading wheel 18a, etc.
5 is configured to be drive-controlled. Hereinafter, a procedure for repairing an existing tunnel using the lining device 10 will be described.

First, the lining device 10 is inserted into the lining tube 2 having a unit length L, and the lining tube 2 is supported by the plurality of telescopic arms 15 from the inside thereof. Next, the carriage 11 is advanced to carry the lined tubing 2 into the existing tunnel 1. In this state, the extension force of each telescopic arm 15 is adjusted so that the gap between the existing tunnel 1 and the lining tube 2 is substantially uniform. At the end of the loading, the front wheel 18 and the preceding wheel 18a are switched, and the preceding wheel 18a is brought into contact with the preceding lining tube 2. Thereby, the preceding wheel 18
a jumps over a step between the existing tunnel 1 and the preceding lining tube 2 and stops until the rear end surface of the preceding lining tube 2 comes into contact with the leading end surface of the following lining tube 2 and stops. 11 (see the right half of FIG. 1C).

Next, the carriage 11 is moved forward and backward to position the positioning means 20 at a position where the preceding lining tube 2 and the following lining tube 2 come into contact with each other. The telescopic arm 22 is brought into contact with the surface and the inner peripheral surface of the rear end portion of the preceding lining tube 2, and is stretched radially around the axis Z of the lining tube 2. Then, the front end 2a of the lined tubing 2 carried in later is aligned with the rear end 2b of the preceding lined tubing 2. In this state, the front wheel 18 and the leading wheel 18a of the bogie 11 are floated in conjunction with the extension of the telescopic arm 22 (see the left half of FIG. 1C), so that the inside of the front end portion of the subsequent lining tube 2 is formed. The peripheral surface becomes easier to follow the inner peripheral surface of the rear end portion of the preceding lining tube material 2, and the both end surfaces can be aligned with high accuracy of 5 mm or less.

Next, the contact end faces of the following lining tube 2 and the preceding lining tube 2 are welded. Finally, the gap between the existing tunnel 1 and the lining tube 2 is filled with a hardening material 41 such as cement milk.
A press-fitting hole for filling is provided. These press-fit holes are closed after the hardening material 41 is filled. Note that the present invention is not limited to the above embodiment, and specific forms of the cart 11 and the telescopic arms 15 and 22 can be implemented with appropriate changes, for example, in consideration of transportation, The cart 11 is configured to be dividable into a plurality.

[Brief description of the drawings]

FIG. 1 shows a lining device for an existing tunnel according to an embodiment of the present invention, and FIG. 1 (A) is a side view of the lining device;
FIG. 1B is a vertical sectional view taken along line bb in FIG.
The left half in (C) is a vertical sectional view taken along line cc in FIG. 1 (A), and the right half in FIG. 1 (C) is a vertical sectional view taken along line dd in FIG. 1 (A). FIG.

FIG. 2 shows an existing tunnel lining device according to a conventional example,
FIG. 1 (A) is a longitudinal sectional view showing a state in which the underlaying material divided by the lining device is carried into an existing tunnel, and FIG. 1 (B).
FIG. 4 is a longitudinal sectional view showing a state in which the upper lining material divided by the lining device is carried into an existing tunnel.

FIG. 3 is a longitudinal sectional front view showing a repair completion state of an existing tunnel according to a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Existing tunnel, 2 ... Lined tubing, 2a ... Front end of lined tubing, 2b ... Rear end of lined tubing, 10 ... Lined device, 11
... cart, 15 ... telescopic arm, 18 ... front wheel, 18a ... preceding wheel, 19 ... rear wheel, 20 ... position alignment means, 21 ... machine frame, 22 ... telescopic arm, L ... unit length, Z ... lined tubing Axis.

Claims (4)

[Claims] 1. A lining device for carrying a lining tube (2) having a similar cross section slightly smaller than the inner surface of an existing tunnel (1) into the existing tunnel (1) and lining the same. The distance between the front wheel (18) and the rear wheel (19) of the bogie (11) traveling in the existing tunnel (1) is set to the lined tubing (2).
A plurality of telescopic arms that carry the lining tube (2) from the inside between the front wheel (18) and the rear wheel (19) of the bogie (11). (15), and a position aligning means (20) for aligning the front end (2a) of the lining tube (2) with the rear end (2b) of the preceding lining tube (2). A lining device for an existing tunnel, characterized in that: 2. The lining device for an existing tunnel according to claim 1, wherein the positioning means (20) includes a machine frame (21) fixed to the bogie (11), and the machine frame. (2
1) extending over the inner peripheral surface of the front end of the lining tube (2) and the inner peripheral surface of the rear end of the preceding lining tube (2). Z) a plurality of telescopic arms (22) extending radially around the center,
In conjunction with the extension of the telescopic arm (22), the carriage (1)
A lining device for an existing tunnel, characterized in that the front wheel (18) according to 1) is levitated. 3. A lining device for an existing tunnel according to claim 1, wherein a preceding wheel (18a) is provided in front of said front wheel (18) to be in contact with a preceding lining tube (2). , The front wheel (18)
A lining device for an existing tunnel, wherein the lining device can be switched between a wheel and a preceding wheel (18a). 4. The existing tunnel lining device according to claim 1, wherein the rear wheel 19 of the bogie 11 is configured as a driving wheel for traveling. Tunnel lining device.