JPS6133959B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piping method for sequentially arranging feeding and draining water pipes within a buried pipe in a mud water propulsion method.

In general, in the mud propulsion method, a starting shaft and a reaching shaft are constructed in the ground, and as the shield excavator is used as a leading pipe to excavate from the starting shaft side to the reaching shaft, a ready-made pipe of a fixed size such as a Huyum pipe is inserted into the starting shaft. They are pressed and buried one after another by a propulsion jack installed inside.

In this case, in a mud excavator, a feed and mud drain pipe equal to the length of the buried propulsion pipe is laid inside the buried pipe when the buried propulsion pipe is connected, and its front end is connected to the feed pipe in the already buried pipe. It is connected to the rear end of the drainage pipe. Once the excavator has reached the shaft and the underground pipes have been laid, the transport and mud drain pipes are removed. Transport the slurry to the shaft or feed only near the excavator. After cutting off the joint part of the drainage pipe, send a long length using a winch installed in the shaft, or pull the entire drainage pipe into the shaft. The joint is being separated and removed inside the shaft.

However, the removal work of this transport and drainage pipe,
Particularly when the buried pipe is a small-diameter pipe, it is difficult to separate and transport the joint.Furthermore, if you pull out the pipe from the buried pipe while it is connected in series, it will damage the inner wall surface of the buried pipe. There were drawbacks such as the winch wire sometimes breaking.

Furthermore, when a water pipe for transporting and discharging sludge is laid inside a small-diameter underground pipe, it becomes a big obstacle and is dangerous for workers to pass through the underground pipe.

In order to eliminate such drawbacks, the present invention is designed to make it possible to move a pipe carrier in the length direction of the buried pipe when sequentially adding and installing sludge water pipes into the pipe to be propulsion-buried. The sludge water pipe is sent to this pipe receiving truck, and the drainage pipe is received and laid in the excavated ground together with the buried pipe.After the installation is completed, a series of feeding and drainage water pipes are carried out inside the buried pipe while the pipe receiving truck is running. The present invention provides a method for piping a mud water pipe for transporting and draining water in a mud water propulsion construction method, which is characterized by being able to be pulled in and removed from the mud.

To explain an embodiment of the present invention with reference to the drawings, the mud propulsion method excavates the ground with a mud shield excavator 3 from a starting shaft 2 built in the ground 1 to a destination shaft (not shown), as is known. As the shield excavator 3 excavates, a fixed-length pipe body (hereinafter referred to as a buried pipe) 6 to be buried, such as a humid pipe, is moved by a reaction force receiver 4 installed in the shaft 2 and a press-in device 5. The earth and sand excavated by the mud shield excavator 3 is fed through a mud water pipe 8 from a tank 7 installed on the ground to the shield excavator 3.
The muddy water sent to the excavation chamber 9 is sent to the tank 7 through the drainage pipe 10, where it settles and is disposed of. Further, as described above, when the buried pipe 6 is press-fitted to a predetermined length by the press-in device as the shield excavator 3 excavates, the excavation and feeding by the shield excavator 3 and the circulation of waste water are stopped, and the final The trolley 1 installed inside the buried pipe 6 of
After separating the joints between the rear ends of the upper feeding and drainage water pipes 8 and 10 and the feeding and drainage water pipes 8' and 10' from the ground and retracting the press-fitting device 5, the buried pipe 6 at the rearmost part is removed. A pipe 6 to be buried next is inserted between the press-fitting device 5 and a trolley 11 disposed inside the pipe 6.
a feeder supported by and having a length approximately equal to that of the buried pipe 6;
Sludge water pipes 8 and 10 are added and connected between the separated parts.

In this way, when simultaneously connecting the buried pipe 6 of a fixed length and sequentially adding the feeding and draining water pipes 8 and 10 of approximately equal length to the length of the buried pipe 6, the method of the present invention Transfer and drain water pipes 8 and 10 to trolley 1
1 and placed on the lower side of the buried pipe 6.

As shown in FIG. 2, the truck 11 has semicircular tube supports 13, 13 fixed to both sides of the front end and both sides of the rear end of a rectangular frame 12, and integrally attached to the center of both sides of the frame 12. The wheels 14, 14 may be supported on a vertically mounted bracket 15, or the tube supports 13, 13 may be provided with semicircular notches on both sides of the front and rear frame portions of the frame 12, as shown in FIG. Or, as shown in FIG. 4, when the rectangular frame 12 is made into a four-wheeled vehicle (or a tricycle may be used) and the frame 12 is stabilized by its wheels 14, 14. For this purpose, a structure in which semicircularly curved tube supports 13, 13 are integrally fixed only to the center portions of both sides of the frame 12 is used.

This trolley 11 is transported in a fixed length, and each time a drainage pipe 8, 10 is added, at least one
Pipe support parts 1 on both sides are used for each length pitch.
Place the mud feeding water pipe 8 and the mud draining water pipe 10 on 3 and 13,
As mentioned above, the mud propulsion method will be used.

In addition, a rectangular footboard 15 is installed between the upper surfaces of the frame bodies 12 of the carts 11, 11 that are adjacent to each other in the length direction of the pipe, and a series of footboards 15 are installed inside the buried pipe between the shield excavator 3 and the starting shaft 2. It forms a passageway and enables safe work.

When the shield excavator 3 reaches the destination shaft in this way, the joints 16 of the feeding and drainage water pipes 8 and 10 between the vicinity of the shield excavator and the shaft are separated, and then the mud is sent from the starting shaft 2 side by an appropriate traction means. ,
When the drainage water pipes 8 and 10 are pulled, the wheels 14 of the cart 11 roll on the lower surface of the underground pipe, and a series of transport and drainage water pipes 8 and 10 arranged over the entire length of the underground pipe are pulled toward the starting shaft 2. The joints 16 of the feeding and mud draining water pipes that are successively pulled out into the starting shaft 2 are untied one after another, and the fixed length mud feeding and draining water pipes 8 and 10, the truck 11, and the treadle 15 are removed.

As described above, according to the piping method for the feeding and sludge drainage water pipes of the present invention, when connecting a pipe of a fixed length, a cart supporting the feeding and sludge drainage water pipes to be added is placed inside the pipe, and the pipes are already buried. The conveyor is supported by a trolley inside the tube.
The rear end of the sludge water pipe is sent from the ground side, and the sludge water pipe is connected to the separation part from the sludge water pipe, so after connecting the pipe body such as the humid pipe and burying it, By simply pulling the feeding and draining water pipes from the wellhead side, the trolley moves over the inside of the buried pipes and pulls them out of the buried pipes in a light and efficient manner. Since it does not have to be carried out inside the buried pipe, it is extremely easy to perform the work of separating the joint, as well as transporting and removing the separated pipe, and the drainage pipe.
Particularly when the buried pipe is a small-diameter fume pipe, the above-mentioned work is accompanied by danger, but in the present invention, this danger can be completely eliminated.

Furthermore, when the mud water supply and drainage pipes are pulled out, these pipes do not come into sliding contact with the inner surface of the buried pipe, so the quality control of the pipe line is improved without damaging the buried pipe.

Additionally, during the construction of buried pipes, by installing treads between the upper surfaces of the carts that support the conveyance and drainage water pipes, a safe passage can be secured inside the buried pipes, improving work safety and efficiency. It is possible.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a simplified vertical side view of the construction state, and FIGS.
The figures are perspective views of carts of different shapes, FIG. 5 is a longitudinal sectional front view of the main part in a state in which feeding and draining water pipes are supported, and FIG. 6 is a side view thereof. 1...Ground, 2...Starting shaft, 3...Shield excavator, 6...Buried pipe, 8, 10...Transmission, mud drainage pipe, 11
...Dolly, 13...Pipe support part, 15...Treadboard, 16...Joint part.

Claims (1)

[Scope of Claims] 1. When a fixed length of feeding and draining pipes are sequentially added and connected to a fixed length pipe that is sequentially press-fitted and buried in accordance with the propulsion by the slurry propulsion method, a rectangular frame in plan view is used. A fixed-length pipe that is equipped with wheels at the lower end of the body and pipe support parts on both sides of the frame body is disposed inside the fixed-length pipe when the fixed-length pipe is connected, and is supported by this trolley. The method is characterized by: feeding the slurry water pipe supported by a trolley of a fixed length pipe already buried therein, feeding from the rear end of the slurry water pipe and the ground side, and connecting to the separation part from the drainage water pipe. Piping method for feeding and draining water pipes in the mud propulsion method. 2. A piping method between feeding and draining mud water in the mud water propulsion method according to claim 1, characterized in that a step board can be installed between the frames of pipe support carts adjacent in the direction of pipe propulsion. .