JP2000240394A - Mucking method for tunnel and muck car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To muck debris from tunnel of a small section efficiently. SOLUTION: A plurality of muck cars 20 running forward and backward in prescribed allotted sections are allocated on tracks between the vicinity of a face 2 of a tunnel extended with the advance of the face and a pithead 8 of the tunnel. The muck produced at the face 2 is put in a container bag 10 which is brought into the vicinity of the face 2 and set temporarily in a folded state. The container bag 10 fully loaded with the muck is carried toward the pithead 8 by the muck car 20 waiting at a starting point A. The container bag 10 is transferred from the muck car 20 arriving at a load transfer point B, the terminal of the prescribed allotted section, to the subsequent muck car 20 waiting to run for carriage through the next section. Furthermore, cyclic running wherein the muck car 20 emptied after the operation for transfer returns to the starting point is executed for each of the allocated muck cars 20, and thereby the muck produced at the face 2 of the tunnel is brought to the pithead 8 thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for carrying out a tunnel and a method of transporting the same, and more particularly, to a method for carrying out a tunnel efficiently in a small-section long-distance tunnel and a method for using the same. The present invention relates to a transport vehicle.

[0002]

2. Description of the Related Art Conventionally, in a sliding operation in a mountain tunnel or an earth-pressure shield tunnel, a sliding steel wheel is used to slide from a face 2. The scrap steel car is towed by a battery locomotive in a state where a plurality of steel cars are connected, and is driven to the outside of the mine. However, in a tunnel with a small cross section, slippage has become a critical path of the work cycle because the steel car track cannot be double tracked. Thus, various slip-out methods have been realized in which slip generated in one blast cycle is carried out once or continuously. As a typical example of a sliding work, there is a sliding method using a train loader. Since the train loader is installed behind the face so as to straddle the steel wheel on the track, the shear generated at the face can be continuously loaded on a plurality of connected steel wheels. This method has a drawback in that it is necessary to dispose a steel wheel under the train loader during shear loading, so that it cannot be used unless the tunnel cross section is large enough to allow the train loader to cross the steel wheel.

[0003] On the other hand, as an example applicable to a tunnel having a medium-sized cross section, a sliding operation using a shuttle car is also performed. The shuttle car is a large-capacity connected steel car having both functions of a train loader and a connected steel car, and the cross-section occupied by the tunnel can be made smaller than in the case described above.

[0004]

However, in each case, the bulk loading equipment becomes large and the equipment cost becomes high. In addition, a large battery locomotive is required to tow the linked steel car. Furthermore, in a tunnel with a small cross section, a shuttle car may not be used because an occupied cross section cannot be secured. Therefore, in order to realize efficient sliding work in a tunnel with a smaller cross section, simplification of the traction equipment, optimization of the operation cycle of the scrap steel car, compact installation of the shear loading equipment to the shear steel car at the face Had become an issue.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a small-section tunnel with:
It is an object of the present invention to provide a tunnel moving-out method and a sliding conveyance truck capable of performing an efficient moving-out operation in consideration of a cycle time.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention reciprocates a predetermined allocated section on a track between the vicinity of a face extended as the tunnel face advances and the tunnel entrance. While distributing a plurality of slip transport vehicles, loading the shear generated at the tunnel face into the container carried in the vicinity of the face, facing the tunnel well with the slip transport vehicle waiting for the container full of the slip at the starting point. The container is moved to the next slip transport vehicle that is waiting to carry out the next section from the slip transport vehicle that has reached the load transfer point that is the end point of the predetermined allocation section and is transferred after the transfer operation, and after the transfer operation A cycle operation that returns to the point from which the vehicle departed is carried out with each of the allocated shear transport vehicles, and the slip generated at the tunnel face is tunneled. Characterized in that it was to be carried out until the mouth.

[0007] Further, as a transporting truck used for a sliding operation, a traverse mechanism for moving a container full of shears placed on a loading platform in a tunnel extending direction on the loading platform, and a traveling mechanism for traveling on a tunnel track. And a self-propelled drive mechanism.

In tunneling, the container is formed into a foldable bag-like body, and a plurality of such containers are transported to the vicinity of the tunnel face in a state of being folded and temporarily placed, and are used for sequential loading. Is preferred.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a first embodiment of the present invention; FIG. 1 is a longitudinal sectional view of a tunnel 1 schematically shown for explaining a tunnel moving-out method of the present invention. Near the face 2 at the left end of the figure, piles 3 generated by an excavator (not shown) or a blasting operation are piled up. Further, a portal frame 4 is disposed immediately behind the rear side. The portal frame 4 can travel on an underground track, and is arranged immediately after the tunnel face 2 with the extension of the track according to the progress of the tunnel face 2. A simple traveling hoist 6 is attached to the upper beam 5 of the gate-shaped frame 4, and the luggage (in this embodiment, a shed is loaded) along a rail (not shown) provided on the upper beam 5. The container bag 10) can be moved laterally between the beam spans.

A plurality of flatly folded container bags 10 are temporarily placed near the gate frame 4 in a stacked state. The container bag 10 is a rectangular bag-shaped body manufactured by sewing a square synthetic fiber woven fabric on the bottom surface and five side surfaces, and contains a content made of a bulk material (bulk) such as a powder or a lump. Can accommodate. The container bag 10 is a known product handled by a name such as a flexible container or a sheet pack. Hereinafter, it is referred to as a “container bag” in this specification.

A predetermined fold line is formed on the surface of the container bag 10. When the whole is folded, the container bag 10 is folded in the same fold line into the same flat shape, stacked in several stages in an empty state, and temporarily placed. Not too bulky.

FIG. 1 shows a state in which a container bag 10 full of shears is placed on a loading table 7 at the rear end of a gate type frame 4 by a shear loading machine (not shown). Further, a transport carriage 20 is shown near the loading platform 7. The transport vehicle 20 is a track-running vehicle that runs on a tunnel track by battery driving, and is in a state immediately after loading a container bag 10 full of shear and starting unloading traveling from the loading platform 7 toward the wellhead 8. . Further, at the middle position of the tunnel, an empty carrier 20 having the same structure is traveling back on the track toward the transfer point (B). Further, a state is shown in which the container bag 10 is lifted by the lifting device 9 outside the tunnel pit (end point), and the empty carrier 20 is traveling back toward the tunnel pit. Since the suspended container bag 10 has a bottom-opening structure, it is possible to open a dump truck (not shown) in a suspended state in a suspended state.

Referring now to FIGS. 2 and 3, the carriage 20
The details of the operation of the carrier 20 in the sliding-out method of the present invention and the procedure thereof will be described with reference to FIGS.

FIG. 2A is a side view showing a carriage 20 used in the tunnel moving-out method of the present invention, and FIG. 2B is a plan view of the same. The carriage 20 shown in both figures is a chassis 21
The driving wheel 2 is driven by the battery mounted on the
3 is a railcar that can drive on a track in a tunnel by itself. A plurality of lateral feed rollers 24 are disposed on the chassis 21 in a direction parallel to the axle (FIG. 2B).
reference). Some of the horizontal feed rollers 24 are drive rollers 24A that rotate in a predetermined rotation direction by a drive source (not shown). In the present embodiment, three of the eight lateral feed rollers 24 are drive rollers 24A. The number and size of the rollers 24, the number of drive rollers 24A, and the like can be appropriately set according to the size of the container bag 10 placed on the rollers 24 (see FIG. 3). The rotational torque of the driving roller 24 is set to the ability of the loaded full container bag 10 to move on the roller 24. Each drive roller 24
For example, the rotational driving force may be transmitted from a single drive source via a reduction transmission mechanism, or a motor and a reduction mechanism may be connected to each roller 24.

FIG. 3A is a side view showing the carrier 20 on which the container bag 10 is placed, and FIG. 3B is a front view of the same. As shown in both figures, in the present embodiment, the transport carriage 20 is designed to have such a size that one container bag 10 full of shears is placed. The size of the container bag 10 depends on the traveling capacity of the transport trolley 20,
It is determined in consideration of the total weight of the bag at the time of shear loading, such as the rotational torque of the lateral feed roller 24, and also, the container bag 1 has a cross section of the tunnel 1 as illustrated in FIG.
It is preferable to set a margin above and to zero.

FIGS. 4A to 4E (hereinafter, FIG.
Is omitted. 4) is a schematic explanatory view showing a procedure of a transfer operation of the container bag 10 at the transfer point (for example, point B) shown in FIG. As shown in the figure, the transport trolley 20 on which the container bag 10 full of shears is placed from the face side (left side in the figure) approaches the transfer point (B), and the opposite pit side (in the figure). Right)
From there, the empty carrier 20 is approaching the transfer point (B) (see (a)). In this figure, it is depicted that the vehicle arrives at the transfer point from both directions almost at the same time. However, as shown in the example of a diagram (FIG. 5) described later, the empty carrier 20 first waits at the transfer point. What should I do?
At this transfer point, a stop switch (not shown) is provided so that the approaching transport vehicles 20 do not collide with each other. The stop switch may be a mechanical contact switch or a non-contact switch such as a photoelectric sensor or an ultrasonic sensor. Two transport carts 20
When the vehicle stops at the transfer point, the transport vehicle 20 loaded with the container bag 10 and the traverse rollers 24 of the empty transport vehicle 20 start driving. The container bag 10 full of shears has two transport carts 20 as shown in FIG.
And moves to the right side of the carriage 20 in the figure. Then, as shown in (d), at the stage where the container bag 10 has been completely transferred to the other carrier 20, the traverse rollers 24 stop, and the transfer of the container bag 10 is completed. At this time, a photoelectric sensor,
It is preferable to equip a weight detection sensor or the like so as to accurately position the container bag 10 transferred by the lateral feed roller 24 on the transport carriage 20. Thereafter, as shown in (e), the transport trolley 20 loaded with the container bag 10 starts unloading traveling toward the wellhead 8 (end point), and the transport trolley 20 in one empty state faces the face 2. And return to start traveling (see FIG. 1).

FIG. 5 is a diagram schematically showing a part of the operation cycle of the transport vehicle 20 which is operated between the vicinity of the face 2 of the tunnel and the wellhead 6 shown in FIG.
As shown in the figure, the operating distance covered by one carrier 20 is determined by the total cycle of the off-loading time, transfer time, and running time. Then, it is planned to maintain the cycle of shearing out by increasing the number of dispatched vehicles as the track elongates. For example, the traveling speed of the transport trolley 20 differs between a state in which the container bags 10 are loaded and an empty state. Then, the transport vehicle 20 that has become unloaded at the transfer point (for example, point B) returns and travels to return to the starting point (for example, point A), loads the container bags 10, and transfers again (for example, point B). And the transport trolley 20 to which the container bag 10 has been transferred at the transfer point (point B) becomes empty at the transfer point (point C) on the adjacent wellhead side, and is transferred again. The time required to return to the point (point B) may be substantially equal. At this time, it is important to set the operation distance of the transport vehicle 20 so that the transport vehicle 20 loaded with the container bags 10 does not stand by at the transfer point in order to shorten the cycle time. In this manner, by arranging the required number of the transport vehicles 20 that reciprocate in the predetermined allocated section in accordance with the track extension accompanying the progress of the tunnel face, the slippage cycle time in the small-section tunnel can be significantly reduced. .

FIG. 6 is an explanatory view showing a modified example of the carrier 20. In the sliding-out method shown in FIG. 1, a plurality of folded container bags 10 are stacked in the vicinity of the face 2, and the above-described sliding is continuously performed until these container bags 10 disappear. . During this cycle, a plurality of container bags folded at the stage where the empty container bag has disappeared at the face position or in the middle stage need to be carried from the wellhead to the face and replenished. During this time, the slipping operation is stopped.

Therefore, the cycle time can be improved by using the carrier 20 for the purpose of omitting the work of replenishing empty container bags. FIG. 6 (a)
The transport carriage 20 shown in FIG.
The upper traverse roller 24 is used to transfer the container bag 10A as shown in FIG. 4, while the lower traverse roller 25 is used to shift the folded container bag 10B. Is used to transfer in the opposite direction to the container bag 10A full of. As a result, as shown in FIGS. 6A to 6C, the folded container bag 10 </ b> B can be transported from the wellhead to the vicinity of the face in parallel with the sliding cycle. As a result, it is not necessary to provide a cycle for replenishing the folded container bag by interrupting the feeding cycle, and the total feeding cycle time can be further reduced.

Although the container bag 10 described above uses a product sewn from a synthetic fiber woven fabric in the present embodiment, a protective coating layer is formed on the inner surface to improve the durability of the container bag 10. It is also possible to use a foldable or foldable metal plate container box or the like. Further, in the present embodiment, an example is shown in which one container bag 10 is loaded on the carrier of one carrier 20, but a plurality of small container bags 10 are placed on a pallet or the like, and the pallet is Transport trolley 2
0 may be placed on the carrier.

In this embodiment, as shown in FIG. 1, a gate-shaped frame 4 is provided at the face, and the container bag 10 loaded by shearing in the vicinity of the face is suspended and moved to the loading table 7. Has become. The advantage of this method is that the carrier 20 can be operated in parallel with the self-loading of the container. On the other hand, as an example in which emphasis is placed on simplification of the equipment, the trajectory of the transport trolley 20 is extended to near the face, the empty container bag 10 is placed on the transport trolley 20, and the shear is directly loaded therein. You can also. At this time, it is preferable to use a jig or the like so that the empty container bag 10 becomes independent with its upper end opened. Tunnel boring machine (TBM)
In such a case as well, the carriage 20 is advanced to the inside of the excavation body,
Container bag 10 by carrying screw conveyor etc.
You can also load the waste directly.

If the undercarriage of the transport carriage 20 is equipped with a lifter capable of raising and lowering the carrier by hydraulically driving the pantograph structure or the like, the container bag 10 can be installed in a wellhead facility such as a shaft.
Can be easily unloaded.

[0023]

As described above, according to the present invention, it is possible to carry out an efficient excavation work with a reduced equipment cost in a long and small cross-section tunnel, and to shorten the entire work cycle of tunnel excavation work. There is an effect that it can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing an embodiment of a tunnel moving-out method according to the present invention.

FIGS. 2A and 2B are a side view and a plan view showing a structural example of a shear transport vehicle according to the present invention. FIGS.

FIG. 3 is a side view and a front view showing a state where a container bag is loaded on the shelving carrier shown in FIG. 2;

FIG. 4 is an explanatory view showing a procedure of a transfer operation of the container bag by the shear transport cart.

FIG. 5 is a schematic diagram showing an operation example of a shear conveyance vehicle.

FIG. 6 is an explanatory view showing a procedure of a transfer operation of a container bag according to a modified example of the shear transport vehicle.

[Description of Signs] 1 Tunnel 2 Face 3 Shear 8 Wellhead 10, 10A, 10B Container Bag 20 Carrier 24, 25 Lateral Feed Roller A Starting Point B Reloading Point

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Naoya Sugawara 2-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation F-term (reference) 2D054 DA17

Claims (3)

[Claims] 1. A plurality of slip transport vehicles that reciprocate in a predetermined allocated section are arranged on a track between the vicinity of a face extended with the progress of a tunnel face and a tunnel entrance, and near the face. The loaded and temporarily placed container is loaded with the shear generated by the tunnel face, and the container full of the shear is carried out toward the tunnel entrance by a slip transport vehicle waiting at the starting point, and is the end point of the predetermined allocated section. The container is transferred from the above-mentioned slip transport vehicle that has reached the reloading point to the next slip transport vehicle that stands by to carry out the next section and travels back to the point where the vehicle departs after the transfer operation. It is characterized in that the cycle operation is carried out on each of the dispatched carriages, and the slip generated at the tunnel face is carried out to the tunnel entrance. Tunnel muck method. 2. A traversing mechanism for moving a container full of shears placed on a carrier on a carrier in a tunnel extending direction, and a self-propelled drive mechanism for traveling on a tunnel track. Shelf transport trolley characterized. 3. The container according to claim 1, wherein the container is a foldable bag-like body, and a plurality of folded containers are carried near the tunnel face in a state of being folded and temporarily placed, and are sequentially used for shear loading. 2. The tunnel moving-out method according to claim 1, wherein