KR101144900B1 - The bottom segment and shield tunnel process thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom plate segment and a shielding method using the same, and more particularly, to a shielding method in which a plurality of segments are assembled to form an outer wall of a tunnel, And a pair of drainage passages having a predetermined interval are formed in the longitudinal direction of the tunnel, and a plurality of drainage passages are formed in the longitudinal direction of the tunnel, And the upper surface of which is provided with the tie rail and the rail to transport the material and excavation material and the worker can move. After completion of the outer wall of the tunnel, only the tie rail and the rail are removed, and a ground wire The tunnel can be completed.

According to the present invention, it is possible to easily install and remove the sleepers and the rails so that the operator can move or easily carry the materials after the bottom plate segments are installed. Also, It is possible to shorten the overall working air, reduce the cost, and improve the work efficiency.

Tunnel, shield method, segment, ground wire, rail

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a bottom segment and a shield tunnel process,

The present invention relates to a bottom plate segment and a shielding method, and more particularly, to a bottom plate segment having a flat upper surface, omitting a step for installing a conventional moving surface and, after a segment ring is installed, The present invention relates to a bottom plate segment and a shielding method using the bottom plate segment.

In general, the shield method is a state-of-the-art method using a shield excavator, which can be called a huge super excavator, which is an advanced method than the existing NATM method.

In this shielding method, a shield excavator having a cutter wheel at its tip is advanced while excavating in the ground, and a single segment ring coupled with a plurality of segments is installed in the excavated excavation to constitute the outer wall of the tunnel.

Then, after a certain length is excavated by the shield excavator, a new segment ring is installed at the end of the previously installed segment ring to repeat construction of the tunnel and the underground structure.

FIG. 1 is a view showing a conventional shielding method, FIG. 2 is a schematic flowchart of a conventional shielding method, and FIG. 3 is a view showing a segment installation and a grounding wire installation.

As shown in the drawing, the ground surface is vertically excavated to a position where a tunnel is to be formed, and excavation is started using a shield excavator (not shown) horizontally at a tunnel forming position.

When the shield excavator is excavated at a certain distance, it is assembled into a tubular segment ring 1 to form an outer wall of the excavated portion by carrying a plurality of segments 2 manufactured in advance.

The segment ring 1 forms an outer wall of the tunnel, and serves to prevent subsidence of the ground by supporting the excavated site.

When the segment ring 1 is installed, the shield excavator again excavates a certain distance and advances, and repeats the process of installing a new segment ring 1 at the excavated site.

At this time, the auxiliary block 3, the sleepers 4 and the rails 5 are installed inside the segment ring 1 for transporting excavated material and materials, and moving the worker.

As shown in FIGS. 2 and 3, the segment ring 1 is installed while being excavated, and each segment 5 constituting the segment ring 1 is installed, And a conveyor that can transport plaster and excavated material.

An auxiliary block 3 having a flat upper surface is provided on the segment 2 located at the lower portion of the segment ring 1 in order to secure the transportation path.

The auxiliary block 3 is formed with arcs such that the lower surface corresponds to the upper surface of the bottom surface segment 2 and the railroad tie 4 and the rail 5 are provided on the upper surface thereof to secure the transportation path.

When the excavation and the installation of the segment ring 1 are completed by repeating this process, the tie line 4, the rail 5 and the auxiliary block 3 are removed and the ground line 6 is installed.

The ground wire 6 is mounted together with the drainage pipe 7 and then formed into a gravel layer 8 filled with gravel or the like and a flat concrete layer 9 is laid on the gravel layer 8, The installation of the branch wire 6 is completed.

At this time, the water flowing in the ground layer is discharged along the drainage pipe, so that the water contained in the upper part of the rubble layer 8 can be easily discharged to facilitate the pouring of the concrete layer 9.

Further, on the upper surface of the concrete layer 9, a separate drain groove is formed to easily discharge the water flowing between the segment rings 1 of the water.

The poured concrete layer 9 is then used for transportation of workers and transportation of materials for additional installation and management of tunnels.

However, it is a matter of course that a separate auxiliary block 3 is installed to install the sleepers 4 and the rails 5 at the time of excavation and the installation of the segment ring 1, but the ground line 6 and the drainage pipe 7 are installed There is a loss in the process and cost of removing the auxiliary block 3 in order to remove the auxiliary block 3.

This process causes an increase in the total air, and the cost is further increased, thereby deteriorating the working efficiency.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method of manufacturing a tunnel structure in which a bottom surface of a bottom plate is formed as an arc, .

In addition, a drainage path can be formed on the upper surface of the bottom plate segment to smoothly drain water. In addition, the sleepers can be easily installed and removed, and a ground wire can be easily installed therein.

It is an object of the present invention to provide a bottom plate segment and a shielding method using the same, which can improve work efficiency because the overall process is reduced due to a decrease in work process and the work period can be shortened and cost can be reduced.

According to an aspect of the present invention, there is provided a shielding method for assembling a plurality of segments to form an outer wall of a tunnel, and installing a railroad tie and a rail to form a tunnel by transporting material and excavated material, And a lower surface of the lower surface is formed with a circular arc so as to form a circle with the other segments and the upper surface is formed flat. A pair of drainage paths having a predetermined distance is formed in the longitudinal direction of the tunnel, and a ground wire installation hole and a grout hole are formed therein The upper surface of the tunnel can be moved by a worker carrying material and excavation material by installing the treadmill and the rail. After completion of the outer wall of the tunnel, only the treadmill and the rail are removed, and a ground wire is installed to complete the tunnel.

Preferably, in the bottom plate segment, a coupling wall for replacing a portion of the other segment which is in contact with the selected end of the two end portions in contact with the other segment is extended.

And the bottom plate segment is formed with a space portion inside by the weight of the elongated connection wall body.

The bottom plate segment further comprising the coupling wall is provided in the excavation direction to form each segment ring, wherein one bottom plate segment is formed by extending a coupling wall at one end and the other bottom plate segment adjacent to the other end A wall is extended, and one of the bottom plate segments and the other bottom plate segments are alternately installed.

As described above, according to the bottom plate segment according to the present invention and the shield construction method using the bottom plate segment, the upper surface is formed flat, and after installation, the railroad ties and rails can be easily installed and removed so that the operator can move or easily transport the material .

Particularly, the process of filling the upper side of the lower segment with crushed stone and forming the moving surface with concrete is omitted, and the work process can be shortened.

The ground wire can be easily installed through the ground wire guide provided in each bottom plate segment, and the sleepers can be easily installed and dismantled in the water channel, thereby shortening the working time.

Accordingly, it is a very useful and effective invention that can shorten the overall working air, reduce the cost due to shortening of air, and improve work efficiency.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

It should be noted that the present invention is not limited to the scope of the present invention but is only illustrative and various modifications are possible within the scope of the present invention.

FIG. 4 is a view showing an installation state of a bottom plate segment according to the present invention, FIG. 5 is a schematic flowchart of a shielding method using a bottom plate segment according to the present invention, and FIG. FIG. 7 is a view showing a bottom plate segment according to the present invention, FIG. 8 is a flowchart schematically showing a method of installing a ground line to a bottom plate segment according to the present invention, FIG. 9 is a view 10 is a view showing another embodiment of the bottom plate segment according to the present invention, and Fig. 11 schematically shows a method of installing a ground wire to the bottom plate segment of Fig. 10 12 is a view showing a state in which a ground wire is attached to a bottom plate segment according to the procedure of Fig. 11, Fig. 13 is a view showing a state in which a bottom wall segment And the illustrated drawings, Figure 14 is a view showing the arrangement of the other side of the segment of Figure 13, Figure 15 is a view illustrating the mounting of the rails to the sleepers, and the bottom plate segment in accordance with the present invention.

As shown in the figure, the bottom plate segment 100 forms an arc so that the bottom surface 102 is in a circle with the other segment 20, the top surface 104 is flat, and a pair of drains (110) is formed in the tunnel length direction.

A bottom side of the segment ring 10 is formed by forming a ground wire guide 120 and a grout hole 130 inside the bottom plate segment 100. The top surface of the segment ring 10 is connected to the railroad car 210 It can be installed selectively to transport the material and excavation material and to move the worker.

5 to 6, the segment installation step S10, the excavation material, the material conveyance and installation step S20, and the ground wire installation step S30 are performed. .

First, excavating the ground in the vertical direction or excavating in the horizontal direction is the same as the conventional method, and is performed before the segment installation step (S10).

In the segment installation step S10, the segment rings 10 are installed in the inside of the bore using the plurality of segments 20 and the bottom plate segments 100. [

At this time, the bottom plate segment 100 forms an arc so that the bottom surface 102 forms a circle with the other segments 20, and the top surface 104 is formed flat. A pair of drainage paths 110, And a ground wire guide 120 and a grout hole 130 are formed in the longitudinal direction.

The excavation material and material conveying and installation step S20 is a method of conveying and installing the excavation material and the respective segments 20 and 100 and the material to the outside or inside of the oyster so that the top surface 104 of the bottom plate segment 100 200 and a rail 210 are installed and the excavated material and materials are transported and installed using the rail 210.

The ground wire installation step S30 is to install the ground wire 122 on the ground wire wire fitting 120 of each segment ring 10 so that the rail 210 and the sleepers 200 provided on the bottom board segment 100 And a ground wire 122 is installed on the ground wire wire fitting 120. [

The ground wire installation step (S30) as described above will now be described in detail with reference to FIGS. 7 to 9. FIG.

7, the bottom plate segment 100 forms an arc such that the bottom surface 102 makes a circle with the other segment 20, and the top surface 104 is formed flat, A pair of drainage passages 110 are formed in the tunnel length direction.

A bottom side of the segment ring 10 is formed by forming a ground wire guide 120 and a grout hole 130 inside the bottom plate segment 100. The top surface of the segment ring 10 is connected to the railroad car 210 It is possible to install and transport the material and excavation material and the worker to move.

At this time, the drainage passages 110 are spaced apart from each other at equal intervals with reference to a center line passing through a central portion of the upper surface 104 of the bottom plate segment 100, and a ground line installation hole 120 is formed on at least one of the drainage passages 110 And the grouting hole 130 is perforated to pass through the upper surface 104 and the lower surface 102, and is located on the center line.

The ground line installation step S30 for the bottom plate segment 100 is constituted by a ground line installation step S31, a filling step S32, and a sealing step S33 as shown in Figs. 8 to 9.

The ground line grounding step S31 is a step of mounting the ground line 122 on the ground wire line fitting 120 of the bottom plate segment 100 so that the railway line connecting the railroad tie line 200 and the rail 210 are removed, the ground wire 122 is mounted.

In the charging step S32, the gravel layer 124 is formed by filling the ground wire guide 120 with gravel so that the ground wire 122 is not seen from the outside through the drainage channel 110. [

In the sealing step S33, the concrete layer 126 is formed by pouring concrete on the upper side of the gravel layer 124, thereby forming the bottom of the drainage path as well as the drainage path 110 and the compartment as well as the grounding wire installation hole 120 .

The state of the ground wire installation step S30 is as shown in FIG.

10 to 12, a bottom plate segment 100 'of another embodiment and a shielding method using the bottom plate segment 100' are shown.

The bottom plate segment 100 'of another embodiment forms an arc such that the bottom surface 102' is in a circle with the other segment 20 as shown in FIG. 10, the top surface 104 ' A pair of drainage passages 110 'having an interval are formed in the tunnel length direction.

The bottom surface of the segment ring 10 is formed with the ground wire line fitting 120 'and the grout hole 130' formed and assembled in the bottom plate segment 100 ' 210 can be installed to transport the material and excavated material and to move the worker.

The grooves 130 'are separated from the upper surface 104' and the lower surface 102 'by the same distance with respect to the center line passing through the center of the upper surface 104' of the bottom plate segment 100 ' ', But is positioned on the center line.

The ground wire fitting 120 'is inserted into the bottom plate segment 100' in parallel with the center line so as to communicate with the grouting hole 130 '.

As shown in FIG. 11, the step S30 'of attaching the ground wire to the bottom plate segment 100' is performed by inserting the leader wire S31 ', the ground wire line fixing step S32' and the sealing step S33 ' .

The lead wire inserting step S31 'is a step of inserting and passing the lead wire 124' to the ground wire wire fitting 120 ', connecting the lead wire 124' to one end of the ground wire 122 ' 124 'to the ground wire installation hole 120'.

The ground wire grounding step S32 'is to connect the ground wire 122' to the ground wire wire fitting 120 'so as to pass the lead wire 124' The lead wire 124 'is removed after the ground wire 122' is mounted on the wire wire fitting 120 '.

The sealing step S33 'seals the ground wire guide 120' and the grouting hole 130 'where the ground wire 122' is mounted, and the ground wire guide 120 'and the grouting hole 130' 'To form a sealing layer 126' to prevent water from entering.

The installation state of the ground wire 122 'by the step S30' of installing the ground wire is shown in FIG.

At this time, Bottom plate The segment  As the coupling wall is extended, To  As shown in Fig. 14, in the embodiment of Fig. 7 Bottom plate In the segment 100,  And it will be described as being extended.

This mating wall 140 may be formed Segments 20 and  One of the two ends At the end  Other contacts In the segment 20,  And is formed to replace a portion thereof.

And the joint wall 140 is formed Bottom plate Segment 100 includes  Inside it space (150) is formed, The space portion 150  Is formed inwardly by the weight of the elongated joining wall 140 Bottom plate Segment (100).

As such, the coupling wall 140 and The space portion 150  More formed Bottom plate Segment 100 includes  Segment Install Phase ( S10 ), The segment ring 10  , And one of them is installed in the excavation direction Bottom plate The segment 100-1 Once in the department  The coupling wall 140 is extended.

And this Bottom plate The segments 100-1 and 100-2  Other adjacent Bottom plate The segment 100-2 includes Get And a coupling wall 140 is formed at an end portion thereof, Bottom plate In the segment 100-1, And other Bottom plate The segment 100-2 Alternately  Respectively.

this is, Bottom plate Segments 100 and  Other The segments 20 Combined  majority The segment ring 10  It is possible to improve the overall structural safety by forming heat by mutual contact with each other in the excavation direction.

As shown in FIG. 15, when the sleepers 200 and the rails 210 are installed on the bottom plate segment 100, the mounting brackets 202 are formed at both ends of the bottom of the sleepers 200.

Each of the mounting brackets 202 of the sleeper 200 is inserted into each drainage channel 110 of the bottom plate segment 100 and is connected to a lateral side of the side of each drainage channel 110, 200 are fixed to the bottom plate segment 100.

This omits the use of the conventional fixing member for fixing the sleepers, thereby reducing the work time and cost.

In addition, the sleepers 200 can be easily attached to and detached from the bottom plate segment 100, so that after the formation of the shield tunnel, the sleepers 200 and the rails 210 can be easily installed and removed, .

Such a sleeper 200 is of course also applied to the bottom plate segment 100 'of another embodiment.

In addition, the bottom plate segments 100 and 100 'are pre-cast according to the size of the tunnel to be formed and are transported to the site in advance, thereby shortening the work process.

1 is a view showing a conventional shielding method,

2 is a schematic flow chart of a conventional shielding method,

3 is a view showing a segment installation and a ground wire installation,

4 is a view showing an installation state of a bottom plate segment according to the present invention,

FIG. 5 is a schematic flowchart of a shielding method using a bottom plate segment according to the present invention, and FIG.

FIG. 6 is a view showing a work process according to the flowchart of FIG. 5,

7 is a view showing a bottom plate segment according to the present invention,

8 is a flowchart schematically illustrating a method of installing a ground wire to a bottom plate segment according to the present invention,

FIG. 9 is a view showing a ground wire installation according to the flowchart of FIG. 8,

10 is a view showing another embodiment of the bottom plate segment according to the present invention,

11 is a flowchart schematically showing a method of installing a ground wire to the bottom plate segment of Fig. 10,

Fig. 12 is a diagram showing a state in which a ground wire is installed on the bottom plate segment according to the procedure of Fig. 11,

13 is a view showing a state in which a coupling wall is further formed on a bottom plate segment according to the present invention,

Fig. 14 is a diagram showing the arrangement of each of the short segments in Fig. 13,

15 is a view showing the installation of sleepers and rails in a bottom plate segment according to the present invention.

Description of the Related Art

10: segment 100, 100 ': bottom plate segment

102, 102 ': lower surface 104, 104': upper surface

110, 110 ': drainage pipes 120, 120': grounding wire installation hole

122, 122 ': ground line 124: gravel layer

126: Concrete layer 124 ': Lead wire

126 ': sealing layer 130, 130': grouting ball

140: coupling wall 150:

Claims (4)

A segment ring for use in a shielding method for forming a tunnel, the segment ring having a plurality of segments provided for installing a railroad tie and a rail so as to carry material and excavated material, Wherein a bottom wall portion of the segment ring to be assembled is formed and an engaging wall body for replacing a part of the other segment which is in contact is extended and formed at one selected end of both end portions in contact with another segment for forming the one segment ring, Forming an arc to form a circle with another segment, A pair of drainage passages having a predetermined distance are formed in the longitudinal direction of the tunnel, a grounding wire installation hole and a grout hole are formed therein, Wherein the drainage passage is spaced apart from each other at equal intervals with respect to a center line passing through the upper surface center portion, Wherein the ground wire guide is provided on at least one of the bottom surfaces selected from the drain holes, Wherein the grouting hole is formed on the center line passing through the center of the upper surface and passing through the upper surface and the lower surface, Wherein the upper surface is provided with the treadle and the rail to allow the worker to carry the material and the excavation material, wherein the tread is formed at both ends of the bottom of the treadle, Each of the mounting tines of the sleepers is fitted in two drainage ducts and is fitted to a lateral side of each drainage duct on the outer side with respect to a center line passing through the center of the upper surface, After completion of the outer wall of the tunnel, only the sleepers and the rails are removed, and a ground wire is installed on a ground wire guide provided on the lower side of the drainage path. Then, the ground wire guide is filled with gravel so that the ground wire can not be seen through the drain Forming a gravel layer, The concrete floor is laid on the upper side of the gravel layer to form a concrete layer so that the ground wire guide mounting hole is closed to form the bottom surface of the drainage passage as well as the drainage passage and the drainage passage to prevent direct contact of the water to the ground wire, Wherein a space portion is formed inwardly by the weight of the elongated connection wall. delete delete 2. The apparatus of claim 1, wherein the bottom plate segment, Each of the bottom plate segments being formed at one end thereof with a coupling wall extending therefrom and the other bottom plate segment adjacent thereto being formed with a coupling wall extending at the other end thereof, Wherein the bottom plate segments and the bottom plate segments are alternately arranged.

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