JPH03183895A - Continuous excavation method of vertical shaft and horizontal shaft, and device - Google Patents

Abstract

PURPOSE:To promote work efficiency and economic efficiency by turning a shield excavator after the shield excavator and a vertical shaft shield frame are combined to excavate a vertical shaft, and driving forward the shield excavator alone to excavate a horizontal shaft. CONSTITUTION:A shield excavator 4 connected to the front end of a vertical shaft shield frame 5 so that it is capable of turning in the vertical direction and the vertical shaft shield frame 5 are combined to drive forward, and a vertical shaft 1 is excavated up to the position of a specific depth. Then, after the shield excavator 4 is turned in the direction of a horizontal shaft 2, the shield excavator 4 is driven forward alone, and the horizontal shaft 2 is excavated. According to the constitution, the vertical shaft 1 and horizontal shaft 2 can be continuously excavated by one machine only.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method and apparatus for continuous excavation of vertical shafts and horizontal shafts, in which vertical shafts and horizontal shafts are continuously excavated using one excavator. be.

[Prior Art] When constructing a tunnel, conventionally, as shown in an example in FIG. A tunnel C, which is a side shaft, is excavated using a shield tunneling machine.

[Problem to be Solved by the Invention 1] However, in the case of the above conventional method, it is difficult to carry the shield excavation @b into the shaft a, and it is difficult to excavate the shaft a and the tunnel C, which is the side shaft. There was a problem in that separate machines had to be prepared for this purpose, which increased costs.

SUMMARY OF THE INVENTION Therefore, the present invention aims to provide a method and apparatus for continuous excavation of vertical shafts and horizontal shafts, which can perform both vertical shaft excavation and horizontal shaft excavation with one machine.

[Means for Solving the Problems 1] In order to solve the above-mentioned problems, the present invention provides a shield tunneling machine that is connected to the front end of the shaft shield frame so as to be able to turn freely in the vertical direction, and is integrated with the shaft shaft shield frame. A vertical shaft and a horizontal shaft, characterized in that the shield tunneling machine is propelled to excavate a vertical shaft, then the shield tunneling machine is rotated in the direction of the horizontal shaft, and then only the shield tunneling machine is propelled to excavate the horizontal shaft. This method will be used to continuously excavate the pit.

In addition, as an excavation device, a shield excavator having a cutter device on the front side is connected to the front end of a shaft shield frame equipped with a propulsion jack so as to be able to freely rotate in the vertical direction.
A sheath pipe provided with a turning device for rotating the shield tunneling machine and covering the outer periphery of the shield tunneling machine and the shaft shield frame is installed at the outer peripheral portion between the shield tunneling machine and the shaft shield frame. Further, an attachment/detachment device for attaching and detaching the sheath pipe to and from the shaft shield frame is installed on the shaft shield frame.

[Operation] With the sheath pipe holding the axes of the shield tunneling machine and the shaft shield frame, when the shield tunneling machine excavates while giving propulsion force using the propulsion jack of the shaft shield frame, the shaft is excavated. Ru. Next, the connection of the sheath pipe to the shaft shield frame is released by operating the attachment/detachment device and the sheath pipe is pulled up, and the shield tunneling machine is rotated in the direction of the shaft by operating the turning device. Thereafter, when the shield excavator itself excavates, a horizontal shaft is excavated.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the excavation apparatus of the present invention, in which the rear end of a shield excavator 4 which is the main body of the entire apparatus is equipped with a cutter device 3 for excavating a vertical shaft 1 and a side shaft 2. is suspended and supported by a rotary shaft 6 from the tip (lower end) of a shaft shield frame 5 used only when excavating the shaft 1, and the shield excavator 4 has two swing jacks 20 centered around the rotary shaft 6. .21 (See also Figure 2)
In order to be able to freely rotate 90 degrees in one direction by the operation, the tip side of the shaft shield frame 5 is notched 45 degrees rearward from the position of the rotating shaft 6, and a closing plate is installed in the notch. 7 is provided, while the above-mentioned shield excavator 4
The rear end side of the skin plate 8 that faces the closing plate 7 is moved forward by 45 degrees from the rotating shaft 6.
A skin plate 8 having a notch and including the notch
The outer periphery of the cover 9 is covered with a cover 9, and a turning allowable space 10 is formed between the notch closing portion 9a of the cover 9 and the closing plate 7. The cutter device 3 has an overcutter 14 on the outer periphery of a cutter frame 13 driven by a cutter motor 12 supported by a bulkhead 11.

Further, on the notch closing portion 9a of the cover 9, there is a hole having a radius centered on the axis of the rotating shaft 6, one end of which is located in the notch closing portion 9a, and the other end passing through the closing plate 7. an arcuate plate portion 15a that extends to a position where the arcuate plate portion 15a extends, an end plate portion 15b that connects the other end of the arcuate plate portion 15a and the rotating shaft 6 on the same plane as the closing plate 7; 1
5b and a side plate portion 15c that closes the front and rear surfaces of the frame formed by the notch closing portion 9a, and a skin plate is provided at the rear end of the shield excavator 4. A spherical wall 16 formed with a radius centered on the point where the axis of 8 intersects with the axis of the rotating shaft 6 is attached, and the hood 15 is guided to the penetrating part of the closing plate 7 when the shield excavator 4 turns. While sliding the spherical wall 1
6 is not guided by the inner wall of the shaft shield frame 5, but is allowed to move 1, so that the shield tunneling machine 4 can turn smoothly, and the hood 15 and the spherical wall 16 are formed between the hood 15 and the spherical wall 16. The space is defined as a communication path 17 that communicates the inside of the skin plate 8 and the inside of the shaft shield frame 5. Note that 18 is a sealing member provided in the hood penetrating portion of the closing plate 7 to seal the sliding surface of the hood 15;
is a sealing member provided inside the tip of the shaft shield frame 5 to seal the active surface of the spherical wall 16.

Furthermore, a ring-shaped base frame 22 is provided in the rear part of the shield frame 5 for the shaft, and on the base frame 22, the segments 23 are used to take reaction force to allow the shield excavator 4 to excavate the shaft 1. A required number of propulsion jacks 24 are installed to carry out the excavation of the shaft 1, and a sheath pipe 25 is installed to maintain the axis of the shield tunneling machine 4 and the axis of the shield frame 5 for the shaft in a straight line during excavation of the shaft 1. It is disposed on the outer periphery of the range from the tip of the shield tunneling machine 4 to the rear end of the shaft shield frame 5, and is extended in order to connect or disconnect the sheath pipe 25 from the shaft shield frame 5. A hydraulic jack-type knock 26 that penetrates the shaft shield frame 5 and fits into the sheath pipe 25 when activated is attached to the inner wall of the shaft shield frame 5 as an attachment/detachment device for the sheath pipe 25, and then separated. The end of the wire row 128 let out from the winch 27 is attached to the shaft shield frame 5 so that the sheath pipe 25 is pulled up by the hoisting drive of the winch 27 installed on the ground.
It has a configuration in which it is locked at the rear end of the.

When excavating the shaft 1 and the shaft 2 continuously, first, the axes of the shield excavator 4 and the shield frame 5 for the shaft are held in a straight line by the sheath pipe 25, and then the first As shown in the figure, the entire excavation equipment is arranged so that the shield excavator 4 faces downward and the direction of rotation of the shield excavator 4 coincides with the direction of the horizontal shaft 2 to be excavated, and the cutter device The vertical shaft 1 is constructed to a predetermined depth position by applying propulsive force by the propulsion jack 24 while excavating by the drive of the shaft 3. At this time, when the shield excavator 4 approaches the upper end level of the horizontal shaft 2 to be excavated, the over cutter 14 located in the turning direction of the shield excavator 4 is extended from the outer periphery of the cutter frame 13, and the hood Excavation of the ground on the side of No. 15 is carried out to allow the shield excavator 4 to rotate.

Note that the earth and sand excavated during construction of the shaft 1 is transferred between the skin plate 8 of the shield excavator 4 and the shaft shield frame 5 through a communication passage 17 between the hood 15 and the spherical wall 16. Therefore, it can be easily discharged to the ground. Also, at this time, even if excavated soil enters the sheath pipe 25 through the gap between the sheath pipe 25 and the skin plate 8, the skin plate 8 is covered by the cover 9,
The shaft shield frame 5 is closed by a closing plate 7, and the 1g moving parts of the hood 15 and the spherical wall 16 are provided with seal members 18 and 19, so that the inside of the skin plate 8 and the shaft shield frame are closed. There is no possibility of excavated soil getting into the area.

Next, in order to move on to the construction of the horizontal shaft 2, the hydraulic jack-type knock 26 is shortened to release the connection between the sheath pipe 25 and the shaft shield frame 5, and the multiple units installed on the ground are By driving the winch 27 up, the sheath pipe 25
The wire loaf 28, which is a lock at the rear end, is rolled up to pull up the sheath tube 25, and at the same time, the overcutter 14 which has been extended can be retracted. Thereafter, the cutter device 3 is driven to excavate the ground in front of the cutter frame 13, and the swing jack 20 interposed between the base frame 22 and the spherical wall 16 is extended, thereby creating a shield excavator. Rotate 4. In this case, since the turning angle of the shield tunneling machine 4 cannot reach 90° with only one turning jack 20, as shown in FIG. Swing jack 20.2
As shown in Fig. 3, by refilling in step 1,
The shield excavator 4 is turned by 90 degrees and directed in the direction of the horizontal shaft 2 to be excavated. At this time, the shield excavator 4
The turning operation is performed smoothly because the hood 15 is guided by the penetrating portion of the closing plate 7 and the outer surface of the spherical wall 16 is guided by the inner wall of the shaft shield frame 5.

When the turning work of the shield tunneling machine 4 is completed, for example,
A hole is made in the spherical wall 16 and the backfilling material 29 is filled using this hole.
As shown in FIG. 4, the ground under the shield excavator 4 is improved by injecting the same. After ground improvement, the shield jack 21, hood 15, rotating shaft 6, notch closure part 98 of the cover 9, etc. are removed, and a skin plate member 8a is added to the rear so that the skin plate 8 has a cylindrical shape.
In the cylindrical skin plate 8, an erector 30 is placed.
The equipment is equipped with sacrificial items necessary for the shield construction method, such as a shield jack 31 and a shield jack 31, and a back anchor 32 for taking the propulsion reaction force of the shield jack 31 is installed. After achieving this state, the shield excavator 4 is restarted and the horizontal shaft 2 is constructed using the usual shield construction method.

Thereby, the vertical shaft 1 and the horizontal shaft 2 can be continuously excavated with one shield excavator 4.

Note that the present invention is not limited to the above-mentioned embodiment, and for example, the hood 15 may be unnecessary, and the shield tunneling machine 4 may be rotated by a rotating device other than the rotating jack. In addition, the soil removal method may be either a fluid transport method or a conveyor transport method, and the sheath pipe 25
It is understood that devices other than the hydraulic jack-type knock 26 may be used as the attachment/detachment device for connecting and disconnecting the shield frame with the shaft shield frame, and that various changes may be made without departing from the gist of the invention. Of course.

[Effects of the Invention] As described above, according to the present invention, the shield excavator is rotatably connected to the front end of the shield frame for a shaft, so that after excavating a shaft, the shield excavator is rotated to move sideways. It became possible to excavate pits continuously,
This eliminates the need for carrying a shield excavator into the shaft, as was the case in the past, and also eliminates the need to prepare separate machines for shaft excavation and side shaft excavation, which is advantageous in terms of workability and economy. It exerts a corrupting effect such as becoming.

[Brief explanation of drawings]

Fig. 1 is a cutaway side view showing one embodiment of the excavation device of the present invention, Figs. 2 to 4 are schematic diagrams showing the continuous excavation work process of vertical shafts and side shafts, and Fig. 5 is a diagram of conventional tunnel construction. It is a schematic diagram showing a work procedure. 1... Vertical shaft, 2... Horizontal shaft, 3... Cutter device,
4... Shield tunneling machine, 5... Shield frame for shaft, 6... Rotating shaft, 21.22... Swivel jack (swivel device), 24... Propulsion jack, 25... Sheath pipe , 26...Hydraulic jack type knock (attachment/detaching device).

Claims (2)

[Claims] (1) A shield excavator connected to the front end of the shaft shield frame so as to be able to rotate vertically is propelled together with the shaft shield frame to excavate the shaft, and then the shield excavator is moved to the horizontal shaft. 1. A method for continuous excavation of a vertical shaft and a horizontal shaft, characterized in that the shield excavator is rotated in a direction, and then only the shield excavator is propelled to excavate a horizontal shaft. (2) A shield tunneling machine having a cutter device on the front surface is connected to the front end of a vertical shaft shield frame equipped with a propulsion jack so as to be able to rotate vertically, and a turning device is provided to rotate the shield tunneling machine, Further, a sheath pipe for covering the outer periphery of the shield tunneling machine and the shaft shield frame is disposed on the outer periphery between the shield tunneling machine and the shaft shield frame, and further the sheath pipe is covered with the shaft shield frame. An excavation device characterized in that an attachment/detachment device for attachment/detachment to the frame is installed on the shaft shield frame.