JP7008539B2 - How to arrange the following equipment of the shield machine - Google Patents

Description

The present invention relates to a method of arranging subsequent equipment of a shield machine.

Generally, in the shield method, a space called a shaft is constructed in the ground, various equipment such as a gantry, a starting entrance, and a reaction force wall are installed in the shaft, a shield machine is assembled on the upper part of the gantry, and subsequent equipment of the shield machine is installed. After that, start the machine.
Subsequent equipment is equipment necessary for a series of shield construction methods such as shield excavation, segment assembly, and backfill injection. The necessary equipment is appropriately planned and arranged according to the required performance and scale of the shield machine to be applied.

By mounting these following equipment on the following carriage towed by the shield machine, it is possible to travel on the rails laid in the tunnel in conjunction with the shield machine. However, it will be temporarily placed in the ground yard near the shaft or on the work floor provided in the shaft, at least until the tunnel reaches an extension sufficient to accommodate all the following carriages. During this temporary storage, the shield machine and each subsequent equipment are connected by cables and pipes made of materials that are flexible against deformation, and these cables and pipes that have been temporarily placed are sequentially placed according to the excavation of the shield machine. After sending it out or suspending the shield machine, connect cables and pipes for extension.
The excavation by the shield machine without towing the following equipment is called "initial excavation", the excavation after towing is called "main excavation", and the relocation of the succeeding equipment from the initial excavation to the main excavation is called "stage change". ..

At the time of initial excavation, if there is space in the ground yard other than the shaft, the subsequent equipment is temporarily placed near the shaft in the ground yard, but as in Patent Document 1, a large space is secured for the ground equipment in the urban area. If this is not possible, temporary work floors may be provided in the shaft in multiple stages, and subsequent equipment may be temporarily placed in these stages.

Japanese Unexamined Patent Publication No. 7-279597

However, when constructing multiple tunnels from one shaft, if the subsequent equipment is placed near the ground yard or shaft for each tunnel construction, a large-scale setup change is required each time, and the machine is towed after the tunnel is constructed. It is necessary to temporarily carry out the following equipment to the outside of the shaft and relocate it to the ground yard, work floor, etc. for the initial excavation of the next tunnel construction.
Furthermore, when the subsequent equipment is changed for each tunnel, all the equipment used for the preceding tunnel construction cannot be diverted for the next tunnel construction, and the equipment may be replaced or the order of equipment arrangement may be changed. be.

The present invention provides an efficient method of arranging subsequent equipment of a shield machine when constructing a plurality of tunnels from one shaft.

In order to solve the above-mentioned problems, the method of arranging the subsequent equipment of the shield machine of the present invention is a method of arranging the subsequent equipment of the shield machine when the shield machine is started from one shaft to construct at least two tunnels. Therefore, the first tunnel to be constructed first of the two tunnels arrives in a state of being temporarily placed on the ground yard near the shaft or the work floor provided in the shaft without pulling the subsequent equipment behind the shield machine. It is characterized in that a second tunnel is constructed by being pulled by a shield machine from a state in which the subsequent equipment is arranged in the first tunnel.

In the method of arranging the succeeding equipment of the shield machine of the present invention, the succeeding equipment may be arranged in the first tunnel in the order of being towed by the shield machine for constructing the second tunnel, and the succeeding equipment may be arranged in the first tunnel. It is composed of a plurality of bogies and equipment capable of moving rails, and the equipment may be mounted on the bogie.
Further, when the subsequent equipment is towed by the shield machine for constructing the second tunnel, the rail of the first tunnel may be continuous with the rail laid in the second tunnel.

According to the method of arranging the succeeding equipment of the shield machine of the present invention, when constructing at least two tunnels from one shaft, the succeeding equipment of the shield machine necessary for all tunnel construction is shared and the first tunnel is constructed. Shield machine for construction From the start to the arrival, the following equipment is temporarily placed on the work floor provided in the ground yard or the shaft, that is, the so-called initial excavation state is reached to reach the main excavation. Subsequent equipment does not require setup replacement.
Further, after the arrival of the first tunnel, the subsequent equipment used for constructing the first tunnel can be directly moved into the first tunnel.
Further, if the subsequent equipment arranged in the first tunnel is in the order of being towed by the shield machine for constructing the second tunnel, it is not necessary to replace each equipment.
Further, it is more efficient if the equipment constituting the following equipment from the temporarily placed state is mounted on the following bogie that can move the rail in the tunnel.
Further, if the first tunnel and the rails arranged in the second tunnel are continuous, the shield machine can smoothly tow the following bogie when constructing the second tunnel.

It is sectional drawing of the shaft and two tunnels of this embodiment. It is sectional drawing which shows the start preparation equipment of the shield machine for the construction of the 1st tunnel of this embodiment. It is sectional drawing which shows the arrival time point of the 1st tunnel of this embodiment. It is sectional drawing which shows the start preparation equipment of the shield machine for arranging the succeeding equipment of this embodiment in a 1st tunnel, and constructing a 2nd tunnel. It is sectional drawing which shows the situation which the shield machine for the 2nd tunnel construction of this embodiment is towing the following equipment.

Based on the present embodiment relating to the method of arranging the subsequent equipment of the shield machine of the present invention, the details will be described with reference to FIGS. 1 to 5.

FIG. 1 shows a cross-sectional view of a shaft of the present embodiment and two tunnels constructed by starting a shield machine from the shaft.
The shaft 3 is formed by a wall body 31 and a bottom slab 32 constructed in a cylindrical shape by the deep foundation method. The ring compression effect of the wall 31 eliminates the need for timbering.
The first tunnel 1 and the second tunnel 2 are constructed by the shield machine started from the shaft 1. Of these, the first tunnel 1 is in a state where the shield machine does not tow the subsequent equipment described later (hereinafter,). It is an extension that can be reached as it is (referred to as "initial excavation"), and the second tunnel 2 is an extension that can only be reached when the shield machine is towing the subsequent equipment described later (hereinafter referred to as "main excavation"). Shall have.

FIG. 2 is a cross-sectional view showing a start preparation facility of the shield machine 4 for constructing the first tunnel 1.
After the starting platform 41, the starting entrance 42, and the reaction force wall 43 are sequentially erected on the bottom slab 32, the members carried in by dividing into a plurality of parts are thrown into the shaft 3 to assemble the shield machine 4, and the shaft 3 has a predetermined depth. Work floors 44, 44 ... Will be erected on the floor.
Subsequent equipment 5 is temporarily placed on the work floors 44, 44 ... The subsequent equipment 5 is composed of equipment 51, 51 ... And trolleys 52, 52 ..., And the equipment 51, 51 ... Is mounted on the trolleys 52, 52 .... The cables / pipes 45 connected to the equipment 51, 51 ... Are arranged in various places of the shield machine 4, and the shield machine 4 is ready to start.
In addition, fluid transportation equipment (corresponding to mud circulation equipment of muddy water type shield method, etc.), mud plant equipment (corresponding to mud production equipment of muddy soil pressure type shield method, etc.), backfill injection equipment, segment transfer equipment, etc. The description of the shaft equipment will be omitted here.

FIG. 3 is a cross-sectional view showing the arrival time point of the first tunnel 1 of the present embodiment. Subsequent equipment 5 is reached in the state of initial excavation without changing the setup to the main excavation.

FIG. 4 is a cross-sectional view showing the start preparation equipment of the shield machine 6 for constructing the second tunnel 2 by arranging the subsequent equipment 5 of the present embodiment in the first tunnel 1.
Subsequent equipment 5 used in the construction of the first tunnel 1 is placed on the rail 11 in the first tunnel 1 in the order of being towed from the shield machine 6 for the construction of the second tunnel 2. The rail 11 is laid in advance in the first tunnel 1.
In the same manner as described above, the starting platform 61, the starting entrance 62, and the reaction force wall 63 are sequentially erected on the bottom slab 32, and then the members divided into a plurality of pieces and carried in are thrown into the shaft 3 to assemble the shield machine 6.

FIG. 5 is a cross-sectional view showing a situation in which the shield machine 6 for constructing the second tunnel 2 of the present embodiment is towing the succeeding equipment.
Rails 21 are sequentially laid in the second tunnel 2 constructed by the shield machine 6. If the rail 21 and the rail 11 are continuously connected, the subsequent equipment 5 arranged in the first tunnel 1 can be towed directly and continuously from the shield machine 6.

According to the method of arranging the succeeding equipment of the shield machine of the present invention, when constructing at least two tunnels from one shaft, the succeeding equipment of the shield machine necessary for all tunnel construction is shared and the first tunnel is constructed. From the start to the arrival of the shield machine for construction, the following equipment can be reached in the state of being temporarily placed on the ground yard near the shaft or on the work floor provided in the shaft, that is, the state of so-called initial excavation. No need to replace the equipment following the excavation.
Further, after the arrival of the first tunnel, the subsequent equipment used for constructing the first tunnel can be directly moved into the first tunnel.
Further, if the subsequent equipment arranged in the first tunnel is in the order of being towed by the shield machine for constructing the second tunnel, it is not necessary to replace each equipment.
Further, it is more efficient if the equipment constituting the following equipment from the temporarily placed state is mounted on the following bogie that can move the rail in the tunnel.
Further, if the first tunnel and the rails arranged in the second tunnel are continuous, the shield machine can smoothly tow the following bogie when constructing the second tunnel.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the spirit of the present invention.
For example, there may be three or more tunnels. Further, the subsequent equipment at the time of constructing the first tunnel may be on the ground yard instead of on the work floor.

1 1st tunnel 2 2nd tunnel 3 Shaft sinking 4 Shield machine (for construction of 1st tunnel)
44 Work floor 5 Subsequent equipment 51 Equipment 52 Bogie 6 Shield machine (for constructing the second tunnel)
7 Ground yard

Claims (4)

It is a method of arranging the following equipment of the shield machine when starting the shield machine from one shaft and constructing at least two tunnels.
The first tunnel to be constructed first of the two tunnels is not towed behind the shield machine, but is reached in a state of being temporarily placed on the ground yard near the shaft or on the work floor provided in the shaft. ,
A method for arranging subsequent equipment of a shield machine, which comprises constructing a second tunnel by being towed by a shield machine from a state in which the subsequent equipment is arranged in the first tunnel. The method for arranging the succeeding equipment of the shield machine according to claim 1, wherein the succeeding equipment is arranged in the first tunnel in an order of being towed by the shield machine for constructing the second tunnel. The following equipment is composed of a plurality of bogies and equipment that can move rails.
The method for arranging subsequent equipment of a shield machine according to claim 2, wherein the equipment is mounted on the trolley. When the subsequent equipment is towed by the shield machine for constructing the second tunnel, the rail of the first tunnel is continuous with the rail laid in the second tunnel. The method for arranging the subsequent equipment of the shield machine according to claim 3.

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