JPH08135388A - Concrete for tunnel secondary lining and concrete material transport method and its device - Google Patents

Abstract

PURPOSE: To capsule transport a concrete and a concrete material by utilizing the existing mud transport pipe and mud discharge pipe, to make unnecessary a process of laying a duct, and to reduce the cost of the secondary lining process and the construction term. CONSTITUTION: A concrete and a concrete material for the secondary lining are capsule transported by utilizing a mud transport pipe 2 and a mud exhaust pipe 3 left in a tunnel which was used in an excavation work and the primary lining was applied. In an unloading station facing the secondary lining concrete placing site, a capsule brake and stop member 60, an unloading member 30, a line converting member 50, and an empty capsule extruding blower 57 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for transporting concrete / concrete material for secondary tunnel lining. The secondary lining concrete mainly refers to ready-mixed concrete (green concrete), and the secondary lining concrete material mainly refers to cement, sand, and gravel, and these are collectively referred to as concrete / concrete materials.

[0002]

2. Description of the Related Art In recent years, it has become mainstream to dig a tunnel with a shield machine. The excavator forms a circular tunnel by rotating a turntable with a cutter and pushing out with hydraulic pressure or the like. At this time, the excavated earth and sand is referred to as "sliding" or "discharging", and this discharging is discharged by a truck or a truck or discharged through a mud pipe.

9 (a) to 9 (c) are explanatory views of a conventional tunnel construction. FIG. 9 (a) shows a drill hole 101 immediately after excavation, and a segment 102 is immediately formed on the inner surface of the drill hole 101.
To prevent collapse (see (b)). This lining work is called primary lining. Then, the inner surface of the segment 102 is covered with sufficiently thick concrete 103 to complete the tunnel (see (c)). This lining work is called secondary lining.

Since the secondary lining is a so-called finishing lining,
It is carried out after removing the excavator and mud pipe (and mud pipe). Then, the concrete and concrete materials for the secondary lining are transported to the lining site by trucks or trucks.

[0005]

However, in recent years, from the viewpoint of rationalizing the lining work, there is a demand for switching the transportation method of the truck or the trolley to another transportation method to save labor. In addition, the construction length of tunnels has become longer and longer in recent years, and the transport distance of concrete / concrete materials has become longer, which makes it difficult to secure good quality of concrete / concrete materials due to the slow transport speed of trucks and trucks. There is a problem.

Therefore, pneumatic transportation as a transportation method using a pipe and slurry transportation are also widely used. Particularly, capsule transportation as a technique for preventing powder scattering (powder is packed in a capsule, and the capsule is moved in a pipe. ) Is also in the spotlight. By carrying out capsule transportation, the transportation speed becomes faster and good quality of concrete and concrete material can be secured. However, in any of air transportation, slurry transportation, and capsule transportation, a long pipeline must be installed, which increases equipment costs.

[0007]

[Means for Solving the Problems] Therefore, the inventors of the present invention have diligently studied a technique for replacing the conventional concrete transporting method for secondary lining such as truck transportation, and have carried out a small-diameter mud feeding which is used only during excavation. By reusing pipes and sludge pipes and adopting small diameter capsules, we succeeded in establishing an inexpensive concrete transportation method for secondary lining. Specifically, to fill the mud pipes and mud pipes left in the tunnel that was used for excavation work and the primary lining and the concrete and concrete materials that flow inside these mud pipes and mud pipes. Capsules, a braking / stopping unit and an unloading unit of capsules installed at one end of the mud pipe and the mud pipe facing the secondary lining concrete pouring site,
Secondary lining of the tunnel from the line switching unit and the empty capsule pushing blower, and the capsule braking / stopping unit, loading unit, line switching unit and capsule pushing blower installed at the other end of the mud feeding pipe and the mud discharging pipe. Conveying concrete and concrete material transportation equipment.

[0008]

[Function] After the inner surface of the tunnel excavated by the excavator is firstly lined with segments, the mud pipe and the mud pipe used for the excavation work are left in the state where the mud pipe and the mud pipe are transferred to the capsule. Then, by using one of the mud pipe and the mud pipe, the capsule filled with the concrete / concrete material for the secondary lining is fed to the concrete lining site for the secondary lining, and the mud pipe and the mud pipe are The other feature is that empty capsules are collected.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a perspective view of a capsule according to the present invention.
Reference numeral 0 denotes an open-ended wagon type cart, a loading platform 11 formed by cutting out a part of a cylinder, discs 12 and 12 for closing the front and back of the loading platform 11, and guide wheels attached to these discs 12 and 12, respectively. 13 ... (... indicates a plurality. The same applies hereinafter.)
And tip hardware 14, 14 (rear hardware is not visible in the shadow).

The disk 12 is a disk having a diameter such that a certain clearance is secured from the inner surface of the pipe P, and serves as a "yacht sail", that is, a pressure receiving surface for receiving air pressure. The guide wheel 13 is preferably a rubber tire that rotates freely, and contacts the inner surface of the pipe P to rotate. Since at least three guide wheels 13 ... Are set as one set, the center of the capsule 10 can be aligned with the center of the pipe P. Therefore, there is no concern that the loading platform 11 and the disc 12 contact the pipe P. The tip fitting 14 is a fitting for joining a plurality of capsules 10 ... Or the front and rear capsules 10, 1.
It acts as a metal fitting to prevent 0 collision.

In the figure, when air pressure is applied to one of the disks 12, the capsule 10 is pushed and moved forward. Since the air flow flows through the gap between the disc 12 and the pipe P, the capsule 10 in front of the capsule 10 also receives air pressure and moves forward. In this way, a single pipe P can simultaneously run a plurality of capsules 10.

FIG. 2 is an explanatory view of the loading section according to the present invention. In the loading section 20, for example, an upper opening 21 is provided in the pipe P1, and concrete / concrete material W can be loaded through this opening 21. FIG. 3 is an explanatory view of the unloading unit according to the present invention. In the unloading unit 30, for example, an opening 31 and a ring gear 32 are provided in the pipe P2, and the ring gear 32 is rotated by a motor 33 and a pinion 34 so that the pipe is It is possible to invert the capsule 10 by 180 degrees together with P2 and lower the concrete / concrete material W into the hopper 35.

FIG. 4 is an explanatory view of a line switching unit according to the present invention. The loading station side line switching unit 40 is a pipe P3 for accommodating the capsule 10, a truck 41 for horizontally pulling the pipe P3, a rail 42, Cylinder 43
And a first shutoff plate 44 attached to one end of the pipe P3. In the figure, 46 is a second shut-off plate, 47 is a capsule pushing blower, 48 is a first valve, and 49 is a second valve.

In the figure, the first valve 48 is "closed" and the second valve 49 is "open". The pipe P3 accommodating the capsule 10 is moved by the carriage 41 and the cylinder 43. FIG. 5 is an operation diagram of the line switching unit according to the present invention. Since the pipe P3 is switched to another line, the second valve 49 is “closed” and the first valve 48 is “open”, and the capsule 10 is opened. Push in the direction of the arrow. At the time of this line switching, the first and second shutoff plates 48, 49 always block the pipe ends, so it is possible to prevent the air pressure-fed from the blower 47 from directly leaking to the outside.

Unloading station side line switching unit 5
Reference numeral 0 designates a symmetrical device of the line switching unit 40 on the loading station side, and as shown in FIG.

For the convenience of drawing, the device of the present invention is divided into FIG. 6 and FIG. FIG. 6 is a principle diagram of a loading station of the concrete / concrete material transport device for secondary tunnel lining of the present invention, and FIG. 7 is a principle diagram of an unloading station of the concrete / concrete material transport device for secondary tunnel lining of the present invention. Is. The tunnel secondary lining concrete / concrete material transport device 1 is used for excavation work, and the mud pipe 2 and the mud pipe 3 left in the tunnel that has undergone the primary lining and the mud pipe 2 and the mud pipe Capsule 10 for filling concrete / concrete material flowing inside mud pipe 3 (see FIG. 1) and capsule braking / stopping unit 60 and unloading unit 30 facing the secondary lining concrete placing site shown in FIG. (See FIG. 3), line switching unit 50 (see FIG. 4) and empty capsule pushing blower 57, capsule braking / stopping unit 60 shown in FIG. 6, loading unit 20 (see FIG. 2), line switching unit (see FIG. 3). 4) 40 and a capsule-extruding blower 47.

The mud pipe 2 and the mud pipe 3 have a diameter of 250, for example.
A pipe having a length of 100 mm and a length of 6 m is connected in series by a tube clamp 4 ... A pipeline extending from several hundred m to several tens km. The capsule braking / stopping unit 60 has an air bleeding mechanism (comprising a valve 61, a silencer 62, etc.), and the air bleeding mechanism 60 extracts air from the pipe P4 to eliminate the air flow in the pipe P4 and brake the capsule 10. To act. After that, the capsule 10 naturally stops due to a frictional resistance effect or the like.

Reference numeral 71 in FIG. 6 is a concrete / concrete material charging machine, and 72 is a shift carriage. The capsule 10 can be appropriately replaced by the shift cart 72.
Therefore, it is possible to freely transfer the dirty capsule 10 to the outside of the line for washing, take out the defective capsule 10 from the line, and put another capsule 10 into the line.

The operation of the concrete / concrete material transport device for the secondary tunnel lining described above will be described below. The tunnel is excavated as described in FIGS. 9A and 9B, and immediately covered with the segment. It is characterized in that the mud pipe 2 and the mud pipe 3 used at this time are not removed after the primary lining. FIG. 8 is a sectional view of a tunnel including a mud pipe and a mud pipe according to the present invention, and shows that the mud pipe 2 and the mud pipe 3 are left inside the segment 102. Then, the loading station is arranged in the vertical shaft 73 shown in FIG.
Place the unloading station shown in. That is, a loading station and an unloading station are arranged at the ends of the long mud pipe 2 and the long mud pipe 3.

Then, in FIG. 6, concrete / concrete material is loaded into the capsule 10 (not shown) at the loading section 20, the capsule 10 is moved to the lower mud pipe 3 at the line switching section 40, and the inside of the mud pipe 3 is moved. Let it run. The capsule 10 is stopped by the braking / stopping unit 60 of FIG. 7, the concrete / concrete material is unloaded by the unloading unit 30, and the emptied capsule 10 is line-changed to the mud pipe 2 by the line switching unit 50. Then, the empty capsule 10 is returned to the loading station through the upper mud pipe 2.

The lining site moves along with the secondary lining. In this embodiment, the lining is advanced from the frontmost portion to the vertical pit 73. Therefore, along with the secondary lining, the earliest mud pipe 2 and mud pipe 3 in FIG. 7 may be removed and the unloading station moved to the loading station side.

The configuration and mechanism of the loading section 20, the unloading section 30, and the line switching sections 40 and 50 shown in the embodiment are merely examples, and the present invention is not limited to this embodiment. Further, in the present embodiment, the mud feeding pipe was used as a return pipe for empty capsules and the mud feeding pipe was used as a transportation pipe for laminating capsules.

[0023]

The present invention has the following effects due to the above configuration. In the method for transporting concrete / concrete material for secondary lining according to claim 1, since the concrete / concrete material is capsule-transported by diverting the existing mud pipe and drainage pipe, the number of man-hours for laying the pipeline is reduced. It becomes unnecessary, and the secondary lining cost and construction period can be shortened.

In the concrete / concrete material transporting device for secondary lining according to claim 2, the capsule transporting device is completed only by providing the loading station and the unloading station at the ends of the existing mud pipe and drain pipe. Therefore, the material cost and the installation cost of the pipeline are not generated, and the equipment cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a capsule according to the present invention.

FIG. 2 is an explanatory view of a loading section according to the present invention.

FIG. 3 is an explanatory view of an unloading section according to the present invention.

FIG. 4 is an explanatory diagram of a line switching unit according to the present invention.

FIG. 5 is an operation diagram of a line switching unit according to the present invention.

FIG. 6 is a principle diagram of a loading station of the concrete / concrete material transport device for secondary tunnel lining of the present invention.

FIG. 7: Principle diagram of the unloading station of the concrete / concrete material transportation device for the secondary lining of the tunnel of the present invention

FIG. 8 is a sectional view of a tunnel including a mud pipe and a mud pipe according to the present invention.

[Figure 9] Illustration of conventional tunnel construction

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Concrete / concrete material transport device for secondary lining of tunnel, 2 ... Mud pipe, 3 ... Mud pipe, 4 ... Tube clamp, 10 ... Capsule, 11 ... Loading platform, 12 ... Disc, 1
3 ... Guide wheel, 20 ... Loading section, 21 ... Opening, 30 ... Unloading section, 31 ... Opening, 40 ... Loading station side line switching section, 50 ... Unloading station side line switching section, 60 ... Capsule braking / stopping Part, 73 ... Vertical resistance, 10
2 ... Segment, 103 ... Concrete, P, P1-P
4 ... Pipe, W ... Concrete / concrete material.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiko Yamamoto 2-1, Tsukudocho, Shinjuku-ku, Tokyo Kumagai Gumi Co., Ltd. Tokyo headquarters (72) Inventor Kunio Takeda 2-3 chome, Kandaji-cho, Chiyoda-ku, Tokyo Ceremony Company Obayashi Tokyo Main Office (72) Inventor Kenji Tomoishi 2-3, Kandaji-cho, Chiyoda-ku, Tokyo Stock Company Obayashi Corporation Tokyo Main Office (72) Inventor Yusaku Kanayama 2-3 Kandaji-cho, Chiyoda-ku, Tokyo Address House Obayashi Gumi Tokyo Head Office

Claims (2)

[Claims] 1. After the inner surface of the tunnel excavated by an excavator is firstly lined with segments, the mud pipe and the mud pipe used for the excavation work are left in a state of capsules. As a transportation route, one of the mud pipe and the mud pipe is used to send a capsule filled with concrete / concrete material for secondary lining to the secondary lining concrete pouring site, and the mud pipe and mud A method for transporting concrete / concrete material for secondary tunnel lining, characterized by recovering empty capsules using the other of the pipes. 2. To fill the mud pipe and the mud pipe left in the tunnel which was used for the excavation work and the primary lining and the concrete / concrete material flowing inside the mud pipe and the mud pipe. Capsule, a capsule braking / stopping unit, an unloading unit, a line switching unit, and an empty capsule pushing blower installed at one end of the mud pipe and the mud pipe facing the secondary lining concrete pouring site; A concrete / concrete material transport device for secondary lining of a tunnel consisting of a capsule braking / stopping unit, a loading unit, a line switching unit, and a capsule pushing blower installed at the other end of the mud pipe and drainage pipe.