JP6802942B1 - How to arrange the following trolley of the shield machine and the following trolley - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for arranging a trailing carriage of a shield machine and a trailing carriage capable of efficiently arranging a trailing carriage towed by the shield machine by effectively utilizing the space of an existing tunnel. SOLUTION: This is a method of arranging the following bogies 3 and 4 of the shield machine SM to arrange the following bogies 3 and 4 towed by the shield machine SM using the existing tunnel BC connected to the starting shaft SS of the shield machine SM. The first rail installation process for installing the first rail 1 based on the bottom slab of the existing tunnel BC, the second rail installation process for installing the second rail 2 in the shield tunnel ST including the starting shaft SS, and at least the first In the process of arranging the following bogie 3 on one rail 1, and when a part of the following bogie 3 traveling on the first rail 1 crosses the existing tunnel BC and enters the starting shaft SS, the second rail 2 is on. The height of the first rail 1 is higher than the height of the second rail 2, which consists of a traveling equipment connection process of connecting the traveling equipment capable of traveling on the following rail 3. [Selection diagram] Fig. 1

Description

The present invention relates to a method of arranging a trailing carriage of a shield machine on rails having different heights and a trailing carriage.

Generally, in the shield method, a space called a starting shaft is constructed underground, various equipment such as a gantry, a starting entrance, and a reaction force wall are provided in the starting shaft, a shield machine is assembled on the upper part of the pedestal, and subsequent equipment of the shield machine. After installing, start the shield machine.
Subsequent equipment of the shield machine is equipment necessary for a series of construction of the shield method such as excavation by the shield machine, segment assembly, and backfill injection. For example, a pump for pumping muddy water and mud and a cab for operation. , The necessary equipment such as the power unit that becomes the power is appropriately planned and arranged according to the required performance and scale of the shield machine to be applied.

By mounting these trailing equipment on the trailing bogie towed by the shield machine, the following equipment can travel on the rails laid in the shield tunnel in conjunction with the shield machine. However, at least until the shield tunnel reaches an extension sufficient to accommodate all the following carriages, it is temporarily placed on the ground yard near the starting shaft or on a temporary work floor provided in the starting shaft. During this temporary storage, the shield machine and each subsequent equipment are connected by cables and pipes made of a material that is flexible against deformation, and these cables and pipes that have been temporarily placed are sent out in sequence according to the excavation of the shield machine. , After suspending the shield machine, connect cables and pipes for further extension.
In general, digging with a shield machine without towing the following trolley equipped with this following equipment is "initial digging", digging by towing all following trolleys is "main digging", and subsequent equipment from initial digging to main digging. The rearrangement of the following bogies including the above is called "setup change".

As described above, if there is space in the ground yard during the initial excavation, the subsequent equipment is temporarily placed near the starting shaft of the ground yard, but as in Patent Document 1, a large space for ground equipment in urban areas. If it is not possible to secure the above, there are cases where temporary work floors are provided in multiple stages in the shaft and subsequent equipment is temporarily placed on these.

On the other hand, when the temporary work floor in the starting shaft or the trailing equipment that is not towed on the ground yard as described above is temporarily placed, the trailer that is temporarily placed on the trailing carriage to be towed by the shield machine at the time of setup change. Large-scale work such as relocating equipment is required, which causes delays in the process.
In Patent Document 2, by arranging the following bogie in advance on the rail installed in the existing shield tunnel connected to the starting shaft, it is possible to tow the following bogie with the shield machine from the initial stage of excavation. The method of arranging the following equipment of the shield machine is disclosed.

Japanese Unexamined Patent Publication No. 7-279597 Japanese Unexamined Patent Publication No. 2019-151983

However, the method of arranging the subsequent equipment of the shield machine described in Patent Document 2 is to use the rail installed in the existing shield tunnel and the shield tunnel newly constructed by excavation of the shield machine including the starting shaft. The invention assumes a construction environment in which the installed rails can maintain the same level, and does not consider the case where the height of the installed rails in the existing tunnel is higher.

In the present invention, the rail height of the trailing bogie installed based on the bottom slab of the existing tunnel connected to the starting shaft is arranged in the shield tunnel constructed by excavation of the shield machine including the starting shaft. Provided are a method of arranging a trailing carriage of a shield machine and a trailing carriage capable of efficiently arranging a trailing carriage to be pulled by the shield machine by effectively utilizing the space of the existing tunnel even when the height is higher than the height of the shield machine.

In order to solve the above-mentioned problems, the method of arranging the trailing rail of the shield machine of the present invention is a shield machine in which the trailing rail to be pulled by the shield using the existing tunnel connected to the starting shaft of the shield is placed. In the method of arranging the following trolleys, the first rail installation process of installing the first rail based on the bottom slab of the existing tunnel and the second rail installation of installing the second rail in the shield tunnel including the starting shaft. When the process, at least the trailing trolley arranging step of arranging the trailing trolley on the first rail, and a part of the trailing trolley traveling on the first rail crossing the existing tunnel and entering the starting shaft. It comprises a traveling equipment connecting step of connecting traveling equipment capable of traveling on the second rail to the following carriage, and the height of the first rail is higher than the height of the second rail.

According to this aspect, since the space in the existing tunnel connected to the starting shaft can be effectively used, the trailing carriage is connected to the shield machine from the initial stage of excavation in which the shield machine occupies the starting shaft. You can dig while towed. For this reason, it is possible to minimize the temporary placement of the following equipment required for excavation on the temporary work floor provided in the above-ground yard or in the shaft, and to save labor for the setup change to the main excavation. Further, even if the rail equipment has different heights, the traveling equipment can be installed without interrupting the excavation work of the shield machine (including the towing work of the following bogie) while the following bogie is towed.

In addition, another aspect of the method of arranging the trailing carriage of the shield machine of the present invention is characterized in that the first rail has a section overlapping with the second rail in a plan view.

According to this aspect, since the first rail has a section that overlaps with the second rail in a plan view, a part of the following bogie that traveled on the first rail goes over the existing tunnel and enters the starting shaft. Even if the vehicle enters, the traveling equipment can be connected while the following bogie is receiving the reaction force from the first rail.

Further, in another aspect of the method of arranging the trailing carriage of the shield machine of the present invention, the traveling equipment connecting step is provided between the inner wall surface on the connecting side between the existing tunnel and the starting shaft and the second rail. It is characterized by being performed in a space.

According to this aspect, the traveling equipment connection process can be performed in the space provided between the inner wall surface on the connection side between the existing tunnel and the starting shaft and the second rail, so that it does not interfere with the second rail. The traveling equipment can be connected to the following trolley.

Method of Arranging the Subsequent Bogie of the Shielding Machine of the Present Invention The following equipment is a trailing bogie of the shield machine towed by the shield machine using an existing tunnel connected to the starting shaft of the shield machine, and the following bogie is the above-mentioned. It consists of a first trailing bogie that runs on the first rail installed based on the bottom slab of the existing tunnel, and a second trailing bogie that runs on the second rail installed in the shield tunnel including the starting shaft. The second following bogie is towed by the shield machine, the first following bogie is towed by the second following bogie, and the second following bogie can travel on the second rail by the first following bogie. The equipment is provided, and the height of the first rail is higher than the height of the second rail.

According to this aspect, since the space in the existing tunnel connected to the starting shaft can be effectively used, the trailing carriage is connected to the shield machine from the initial stage of excavation in which the shield machine occupies the starting shaft. You can dig while towed. For this reason, it is possible to minimize the temporary placement of the following equipment required for excavation on the temporary work floor provided in the above-ground yard or in the shaft, and to save labor for the setup change to the main excavation. Further, even if the rail equipment has different heights, the traveling equipment can be installed without interrupting the excavation work of the shield machine (including the towing work of the following bogie) while the following bogie is towed.

According to the method of arranging the trailing carriage of the shield machine and the trailing carriage of the shield machine of the present invention, the height of the rail of the trailing carriage installed based on the bottom slab of the existing tunnel connected to the starting shaft is the shield including the starting shaft. Even if it is higher than the height of the rails placed in the shield tunnel constructed by excavating the machine, the space of the existing tunnel can be effectively used to efficiently use the trailing bogie towed by the shield machine. Can be placed.

It is sectional drawing which shows the arrangement state of the following carriage of the shield machine which concerns on embodiment of this invention. It is a cross-sectional view which shows the arrangement state of the following carriage of the shield machine which concerns on embodiment of this invention (detail of part a of FIG. 1). It is sectional drawing which shows the arrangement state of the following carriage of the shield machine which concerns on embodiment of this invention (AA sectional view of FIG. 2). It is sectional drawing which shows the arrangement state of the following carriage of the shield machine which concerns on embodiment of this invention (BB sectional view of FIG. 2). It is sectional drawing which shows the arrangement state of the following carriage of the shield machine which concerns on embodiment of this invention (CC sectional view of FIG. 2). It is sectional drawing which shows the arrangement state of the following carriage of the shield machine which concerns on embodiment of this invention (DD sectional view of FIG. 2).

Hereinafter, a method of arranging the trailing carriage of the shield machine and the trailing carriage of the shield machine according to the embodiment of the present invention will be described with reference to the accompanying drawings. In the present specification and the drawings, substantially the same components are designated by the same reference numerals to omit duplicate explanations.

First, with reference to FIG. 1, a method of arranging the trailing carriage of the shield machine and an overall outline of the trailing carriage of the shield machine will be described. FIG. 1 is a cross-sectional view showing an arrangement state of a trailing carriage of a shield machine according to an embodiment of the present invention.

The existing tunnel BC is connected in advance to the starting shaft SS constructed in the ground G, and the shield tunnel ST is constructed along with the excavation of the shield machine SM started from the starting shaft SS. The starting shaft SS is constructed by constructing the retaining wall SS1 in a rectangular shape in a plan view, excavating the inside thereof, and then constructing the bottom slab SS2, the side wall, and the top plate in this order by RC.
The existing tunnel BC is constructed horizontally with two RC box culverts.
The shield machine SM is assembled on the starting stand SF installed on the bottom plate SS2 of the starting shaft SS. The starting wall SS3 in the starting direction of the shield machine SM is provided with a starting entrance SE in a ring shape for the purpose of stopping the outflow of water accompanying the starting of the shield machine SM. Further, a reaction force wall BA for transmitting the excavation reaction force of the shield machine SM to the back ground is installed on the connection wall SS4 which is the back surface of the shield machine SM.
The shield tunnel ST is constructed by extruding the segment ring assembled in the shield machine SM from the shield machine as the shield machine SM is dug. The temporary tunnel ST1 from the reaction force wall BA to the start entrance SE is a temporary shield tunnel to be removed at the time of setup change, and the main tunnel ST2 from the start entrance SE to the shield machine SM is not removed. It is a shield tunnel.

Of the rails of the following bogie towed by the shield machine SM, the first rail 1 installed in the existing tunnel BC is to fix the rail on the C-shaped steel arranged so that the web surface is in contact with the bottom slab BC1. It is composed of. As will be described later, the first rail 1 is also laid in the starting shaft SS beyond the connecting wall SS4.
On the other hand, the second rail 2 is laid below the shield tunnel ST as described later.
Since the heights of the first rail 1 and the second rail 2 are different, overlapping sections are provided in the starting shaft SS in a plan view.
Of the following trolleys towed by the shield machine, the following trolley traveling on the first rail 1 is referred to as the first following trolley 3, and the following trolley traveling on the second rail 2 is referred to as the second following trolley 4. As described, when the following trolley straddles both the first rail 1 and the second rail 2, if the position of the center of gravity of the following trolley acts on the first rail 1, the first following trolley 3 and the first If it acts on the second rail 2, it will be the second following trolley 4. Each trailing bogie consists of a steel skeleton and wheels capable of running on rails.

Next, with reference to FIG. 2, a method of arranging the trailing carriage of the shield machine and the overlapping sections of the first rail 1 and the second rail 2 of the trailing carriage of the shield machine according to the embodiment will be described. FIG. 2 is a cross-sectional view showing an arrangement state of a trailing carriage of the shield machine according to the embodiment of the present invention (details of part a in FIG. 1).

The first rail 1 extending beyond the connecting wall SS4 into the starting shaft SS is formed by fixing a rail to the first rail pedestal 6 processed by combining steel materials that can be supported from the shaft bottom slab SS2. When a part of the first trailing carriage 3 traveling on the first rail 1 in the existing tunnel BC enters the starting shaft SS, the center of gravity of the first trailing carriage 3 is loaded on the first rail 1 in the starting shaft SS. While this is being done, the traveling equipment 5 capable of traveling on the second rail 2 is connected to the first following carriage 3. The traveling facility 5 is composed of a steel frame and wheels capable of traveling on rails.
The traveling equipment 5 is connected in a space provided between the connecting wall SS4 and the second rail 2. The traveling equipment 5 carried into this space is moved to a predetermined connection position by using the moving suspension device 7, and is connected to the first following carriage 3. The mobile suspension device 7 is a mobile suspension device that can move the shaped steel provided in the space to a rail.

Next, with reference to FIGS. 3 to 6, a method of arranging the trailing carriage of the shield machine and the arrangement state of the trailing carriage of the shield machine according to the embodiment will be described. FIG. 3 is a cross section taken along the line AA of FIG. 2 showing an arrangement of a trailing carriage of the shield machine according to the embodiment of the present invention. Similarly, FIG. 4 is a cross section taken along the line BB of FIG. 2, and FIG. 5 is a cross section of FIG. The CC cross section and FIG. 6 show the DD cross section of FIG. 2, respectively.

From FIG. 3, the first rail 1 is installed on the bottom slab BC1 of the existing tunnel BC, and the first trailing carriage 3 runs on the first rail 1.
From FIG. 4, the traveling equipment 5 carried into the space provided between the connecting wall SS4 and the second rail 2 is fixed to a part of the steel material constituting the first rail 1 installed in the starting shaft SS. It is moved to a predetermined connection position by using the plurality of moving suspension devices 7 and is connected to the first following carriage 3 (or the second following carriage 4).
From FIG. 5, the first trailing carriage 3 (or the second trailing carriage 4) is in a state where it can travel on both the first rail 1 and the second rail 2 via the connected traveling equipment 5.
From FIG. 6, the first following carriage 3 (or the second following carriage 4) travels on the second rail 2 via the connected traveling equipment 5.

According to the method of arranging the trailing carriage of the shield machine and the trailing carriage of the shield machine of the present embodiment, the space in the existing tunnel connected to the starting shaft can be effectively used, so that the shield machine occupies the starting shaft. From the initial stage of excavation, it is possible to excavate with the following bogie connected to the shield machine and towed. For this reason, it is possible to minimize the temporary placement of the following equipment required for excavation on the temporary work floor provided in the above-ground yard or in the shaft, and to save labor for the setup change to the main excavation. Further, even if the rail equipment has different heights, the traveling equipment can be installed without interrupting the excavation work of the shield machine (including the towing work of the following bogie) while the following bogie is towed.
In addition, since the first rail has a section that overlaps with the second rail in a plan view, when a part of the following bogie that traveled on the first rail crosses the existing tunnel and enters the starting shaft. Even if there is, the traveling equipment can be connected while the following bogie is receiving the reaction force from the first rail.
Furthermore, since the traveling equipment connection process can be performed in the space provided between the inner wall surface on the connection side between the existing tunnel and the starting shaft and the second rail, the traveling equipment is followed without interfering with the second rail. Can be connected to a trolley.

It should be noted that the configuration and the like described in the above embodiment may be other embodiments in which other components are combined, and the present invention is not limited to the configuration shown here. .. This point can be changed without departing from the spirit of the present invention, and can be appropriately determined according to the application form thereof.

G Ground SS Starting shaft SS1 Retaining wall SS2 Vertical shaft bottom plate SS3 Starting wall SS4 Connection wall BC Existing tunnel BC1 Bottom plate SF Starting stand SE Starting Enton Lance BA Reaction force wall SM Shield machine SM1 Tow rod ST Shield tunnel ST1 Temporary tunnel ST2 Main tunnel 1 1st rail 2 2nd rail 3 1st trailing trolley 4 2nd trailing trolley 5 Traveling equipment 6 1st rail pedestal 7 Mobile suspension device

Claims (4)

It is a method of arranging the following trolley of the shield machine, which arranges the following trolley towed by the shield machine using the existing tunnel connected to the starting shaft of the shield machine.
The first rail installation process to install the first rail based on the bottom slab of the existing tunnel,
The second rail installation process for installing the second rail in the shield tunnel including the starting shaft, and
At least the trailing bogie placement process for arranging the trailing bogie on the first rail,
A traveling equipment connection step of connecting a traveling equipment capable of traveling on the second rail to the following carriage when a part of the following carriage that has traveled on the first rail has entered the starting shaft beyond the existing tunnel. And consists of
The height of the first rail is higher than the height of the second rail,
A method of arranging the following bogie of the shield machine, which is characterized by this. The method for arranging a trailing carriage of a shield machine according to claim 1, wherein the first rail has a section that overlaps with the second rail in a plan view. The shield machine according to claim 2, wherein the traveling equipment connecting step is performed in a space provided between the inner wall surface on the connecting side between the existing tunnel and the starting shaft and the second rail. How to arrange the following trolley. It is a trailer of the shield machine towed by the shield machine using the existing tunnel connected to the starting shaft of the shield machine.
The following bogie includes the first following bogie that runs on the first rail installed based on the bottom slab of the existing tunnel.
It consists of a second trailing bogie running on the second rail installed in the shield tunnel including the starting shaft.
The second following carriage is towed by the shield machine and
The first following carriage is towed by the second following carriage,
The second following bogie is equipped with traveling equipment capable of traveling on the second rail on the first following bogie.
The height of the first rail is higher than the height of the second rail,
The trailing dolly of the shield machine that is characterized by that.

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