JPH086548B2 - Tunnel shaft structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a vertical shaft which is excavated from the ground to an appropriate depth in advance when a tunnel is constructed by a shield method.

[0002]

2. Description of the Related Art Conventionally, the role of the shaft in the shield construction method has been mainly to use it as a starting and reaching base for a shield excavator, and during excavation, segment rails, sleepers, etc. from the ground into the tunnel. It is used as a passage for various materials and equipment.
Then, such equipment and materials are temporarily placed on a flat surface in a storage yard provided at an appropriate place on the ground and carried into the mine as needed.

[0003]

[Problems to be Solved by the Invention] However, securing a storage yard for temporarily placing various materials and equipment on the ground is becoming increasingly difficult in urban areas.
Also, because the equipment and materials are carried into the vertical shaft by the operator operating the cargo handling machine such as an overhead crane or a gate crane from the ground and hanging it with a wire,
There is a problem that it requires a lot of work time and labor as well as enormous risk.

Furthermore, since it is difficult to store extra materials and equipment in a narrow shaft, it is necessary to store the materials and materials from above the ground except when loading the materials and equipment into the truck that is transported from the shaft to the tunnel. There is a problem that the unloading work cannot be performed, the cycle time of tunnel construction is adversely affected, and the work efficiency decreases. The present invention has been made in view of the above problems, and an object thereof is to provide a tunnel shaft structure capable of storing and transporting various materials and equipment.

[0005]

In order to achieve the above object, the tunnel shaft structure of the present invention is a spiral which slides tunnel equipment from the upper end opening of the shaft toward the lower part of the shaft along the peripheral wall of the shaft. It is characterized by having a slope. It is desirable that the spiral slope be provided with a large number of rollers for moving the materials and equipment and that stopper means be provided at intervals slightly longer than the materials and equipment.

[0006]

[Operation] The vertical shaft, which was simply a loading path for materials and equipment, is effectively used as a three-dimensional storage room for materials and equipment by means of a spiral slope provided on the peripheral wall thereof, thereby eliminating the need to secure a storage yard for materials and equipment on the ground. Further, when the materials and materials are supplied onto the spiral slope from the upper end of the opening of the vertical shaft, the materials and materials automatically slide on the spiral slope toward the lower end of the vertical shaft, and a large number of the materials and materials are stored on the spiral slope. At the same time, it is possible to easily take out the materials and equipment into the tunnel by taking out the materials and equipment at the lower end of the slope, and to efficiently perform the work of transferring the materials and equipment into the tunnel from the ground through the shaft.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.
A vertical shaft 1 is excavated from the ground to an appropriate depth, and two spiral slopes 3 and 4 parallel to each other are continuously provided on the peripheral wall surface 2 of the vertical shaft from the upper end opening to the lower end of the vertical shaft 1. These spiral slopes 3 and 4 are strip-shaped floor materials 3a and 4a having a constant width with a constant inclination and the peripheral wall surface 2 of the vertical shaft 1.
It is arranged in a spiral shape with its outer end surface in contact with
It is fixed and supported on a support frame 5 fixed to the peripheral wall surface at regular intervals.

Further, floor materials 3a and 4a of the spiral slopes 3 and 4
Between the inner and outer both side wall plates 3b, 3b and between 4b, 4b, rollers 6, 6, ... 6 which are long in the width direction of the floor surface of the slope are formed with their upper peripheral portions protruding from the floor surface. It is rotatably supported at small intervals in the length direction, and is configured to slide and convey the equipment (hereinafter referred to as segment 7) supplied on the spiral slopes 3 and 4 downward by its own weight. I am doing it.

Further, the upper ends of the spiral slopes 3 and 4 are formed on a horizontal supply portion 11 along which the one segment 7 can be placed along the wall surface of the open end of the vertical shaft 1 and at the lower end one side of the vertical shaft 1. The lower ends of the spiral slopes 3 and 4 reaching the upper vicinity of the tunnel 10 that is open to the bottom are also formed in the horizontal take-out portion 12 in which one segment 7 can be placed. Reference numeral 8 denotes a fall prevention fence having a certain height and protruding upward from the upper surfaces of the inner end portions of the floor materials 3a and 4a of the spiral slopes 3 and 4.

Between the side wall plates 3b and 3b of the floor members 3a and 4a, and
In the space between 4b and 4b, as shown in FIG.
Stopper means 9 are provided at intervals that are slightly longer than the length. The stopper means 9 is a fluid pressure cylinder in which a base end portion of an L-shaped lever 9a is rotatably supported between both side wall plates of a floor material and an intermediate portion is also disposed between the both side wall plates. The upper end stopper portion 9c of the lever 9a is configured to be projected and retracted from the floor by being connected to the rod end of 9b and operating the cylinder 9b.

Next, the means for loading the segment 7 into the tunnel 10 from the horizontal lower ends 12 of the spiral slopes 3 and 4 is described. Reference numeral 13 is a stacker crane installed on the inner bottom surface of the vertical shaft 1, which is an opening of the tunnel 10. A support 14 is fixed to the inner bottom surface of the vertical shaft 1 near the end, and the horizontal take-out portions of the spiral slopes 3 and 4 are provided on both sides of the support 14 from both sides of the tunnel 10.
Vertical guide columns 15 and 15 reaching the upper part of 12 are provided upright, and a material / material carriage 16 is arranged on the vertical guide columns 15 and 15 so as to be vertically movable.

The structure will be described in more detail with reference to FIG.
As shown in FIG. 6, both end guide portions 17, 17 of the carriage 16 are
The pair of left and right fork members 18, 18 parallel to each other are fitted on the guide columns 15, 15 so as to be slidable in the vertical direction, and the carriage 16 is provided with a pair of left and right fork members 18, 18 at the lower end horizontal take-out portion 12 of the spiral slopes 3, 4. It is arranged so that it can appear and disappear in the horizontal direction toward.

The driving means for these fork members 18, 18 are such that the lower halves of the fork members 18, 18 are slidably fitted in the guide grooves 19, 19 provided side by side in the carriage 16 and the carriage 16 is moved. The motor 20 is disposed on the lower surface of the rack, and the pinion 21 fixed to the rotation shaft of the motor is meshed with the rack 22 formed on the lower surface of the fork member 18 exposed from the groove bottom of the guide groove 19. In addition, the winch is placed in the proper position on the support base 14.
The sheave 24 is rotatably supported on the upper frame member 24 fixedly installed between the upper ends of the vertical guide columns 15 and 15 and the wire rope 25 wound around the winch 23 is wound around the sheave 24. And the tip thereof is connected to the guide portion 17 of the carriage 16.

Numeral 26 is a turntable provided in the opening end of the tunnel communicating with the vertical shaft 1, and as shown in FIG.
The material / material transport carriage 28 running on the rail 27 laid in the tunnel 10 is turned after the material / material is placed.

With this structure, in order to store the segments 7 in a temporarily placed state on the spiral slopes 3 and 4 provided on the peripheral wall of the shaft 1, the spiral exposed from the ground to the open end of the shaft 1 can be stored. After the segments 7 are mounted on the upper end horizontal supply parts 11 and 11 of the slopes 3 and 4, respectively, and then sent out to the upper inclined ends of the spiral slopes 3 and 4 connected to the respective supply parts 11, the segment 7 is formed. 4 slides on a large number of rollers 6 projecting from the floor surface by its own weight, and when it reaches the downward inclination end of the spiral slopes 3, 4, the stopper means 9 on the lowermost end side
As a result, the lower surface of the segment 7 is received by the stopper portion 9c and is temporarily stored at that position.

When the segment 7 is supplied to the lower ends of the spiral slopes 3 and 4, the self-propelled speed of the segment 7 becomes faster. Therefore, the stopper means 9 may be appropriately retracted during the adjustment so that the slow speed is achieved. To do.

After supplying one segment 7, the next segment 7 is sent out to the spiral slopes 3 and 4, and the segments 7 are successively sent out in this way, and the spiral slope 3,
4 are sequentially received by the stopper means 9 arranged at regular intervals and temporarily stored at that position. In this case, as described above, the segments having different shapes such as, for example, the deformed segment and the standard segment are stored on the two spiral slopes 3 and 4, respectively, but only one spiral slope is stored. Of course, it may be provided along the peripheral wall of the vertical shaft 1.

Next, in order to take out the segments 7 from the spiral slopes 3 and 4 and convey them to the tunnel 10 side, first, the segments 7 stored at the lowermost inclined ends of the spiral slopes 3 and 4 are received. The stopper member 9c of the stopper means 9 is unfolded below the floor surface to be unraveled and transferred onto the horizontal take-out portion 12. During or after this transfer, the carriage 16 of the stacker crane 13 is moved up to the horizontal take-out portion 12 of any of the spiral slopes 3 and 4 by the operation of the winch 23, and stopped at that position.

After that, the fork member of the carriage 16
By projecting 18 and 18 to the horizontal take-out portion 12, the fork member 18 is inserted into the space on the lower surface side of the segment 7 and the carriage 16 is slightly lifted to bring up the segment 7.
After being transferred to these fork members 18, 18, the fork member 18 is contracted by an appropriate length.

Next, the carriage 16 is lowered to face the opening end of the tunnel 10, the fork member 18 is extended, and the carriage 16 is transferred onto a waiting material / material carrier 28 on the turntable 26. To run to the tunnel lining work section. In addition, the next segment 7 stored on the spiral slopes 3 and 4 is sewn between the segment loading operations on the trolley 28 and is supplied to the horizontal take-out portion 12.

In this way, the segments 7 stored on the spiral slopes 3 and 4 are successively sent out to the horizontal take-out section 12 and the carriage 16 is moved up and down in synchronization with the same to move the segments 7 from the spiral slopes 3 and 4 side to the tunnel 10. To the side. On the other hand, a new segment 7 is replenished from the horizontal supply unit 11 on the spiral slopes 3 and 4.

[0022]

As described above, according to the tunnel shaft structure of the present invention, the spiral slope for sliding the tunnel material is provided along the peripheral wall of the shaft from the upper end opening of the shaft toward the lower part of the shaft. The vertical shaft, which has been a mere loading path for materials and equipment required for building tunnels such as segments, rails, sleepers, etc., can be effectively used as a three-dimensional storage space for materials and equipment by the spiral slope provided on the peripheral wall. Since a large amount of materials and equipment can be stored in advance on the spiral slope, it is almost unnecessary to secure a storage yard for materials and equipment on the ground, and tunnel construction work in urban areas can be easily performed. It will be.

Further, by supplying the materials and equipment onto the spiral slope from the upper end of the opening of the vertical shaft, a large number of materials and materials are stored on the spiral slope while automatically sliding the materials and equipment toward the lower end of the vertical shaft. At the same time, it is possible to take out the materials and equipment at the lower end of the slope and smoothly carry the materials and materials into the tunnel.

Therefore, it becomes possible to make an automatic system for the transfer work of the materials and equipment from the ground to the inside of the tunnel through the vertical shaft, and it is possible to improve the working efficiency and to carry out the dangerous cargo handling work in the deep shaft. Therefore, the tunnel construction work can be performed smoothly and efficiently.

[Brief description of drawings]

FIG. 1 is a simplified vertical front view of a shaft,

FIG. 2 is a side view of its development,

FIG. 3 is a cross-sectional view of the tunnel and the lower end of the shaft,

FIG. 4 is a partial side view of the spiral slope,

FIG. 5 is a front view of a stacker crane,

FIG. 6 is a side view of the main part.

[Explanation of symbols]

 1 Vertical shaft 2 Circumferential wall surface 3, 4 Spiral slope 7 Segment 9 Stopper means 10 Tunnel 13 Stacker crane 16 Carriage 18 Fork member

Claims (2)

[Claims] 1. A tunnel shaft structure comprising a spiral slope for sliding a tunnel material from an upper end opening of the shaft toward a lower part of the shaft along a peripheral wall of the shaft. 2. The spiral slope is provided with a large number of rollers for moving materials and materials, and stopper means is provided at intervals slightly longer than the materials and materials. Tunnel shaft structure.