JPS58173297A - Pipe embedding construction method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a trenching method for underground pipes.

In the conventional controlled construction method of this type, direction control is performed to obtain excavation accuracy, but as shown in Figs. Then, the guide pipe is penetrated through the reaching shaft AT, and the guide device AV is recovered, leaving the guide pipe underground (see Figures 1 and 2).

Next, in the starting shaft d, connect the pipe installation device et to the lead pipe (see Figure 3). Using the lead pipe as a guide, connect the management installation device to the buried pipe f', and then Promote f and after penetrating, collect the management equipment at the reaching shaft g.

This controlled construction method is excellent in terms of easy direction control and layer laying accuracy.

However, on the other hand, since the excavation pipe is promoted after the completion of leading and pipe promotion, there are disadvantages such as the need to carry out two-step promotion work and a long construction time. The purpose of this is to reduce the construction time by making the underground pipe installation process a one-step trap, and to reduce the work in the reaching shaft by recovering the leading equipment, management equipment, etc. after penetration. During propulsion, it is possible to save labor by only working in the starting shaft.In addition, in the case of ground that is prone to collapse or water, the starting shaft can be used to improve the ground near the mine entrance (chemical injection, etc.). Water stoppers are installed, but not only do they have to be done only once, which reduces construction costs, but also allows the advantages of the conventional two-step method to be maintained in terms of burial accuracy, resulting in high N. Our goal is to provide a controlled construction method that achieves the highest standards.

Hereinafter, the present invention will be explained with reference to FIG. 5 and subsequent figures.

1#i is a leading device in the drawing, and a consolidation head 5 for direction correction is provided at the end of a pilot jack 9 at the tip of the leading device 1 so that it can be oscillated. 2 is an excavation type management equipment.

The rear end of the leading device 1 is connected to the tip of the excavation-type management installation device 2 with a bolt 7, and a gap t is provided between the two, allowing a certain degree of freedom at this joint. It's too late. This is to prevent the direction correction function of the leading device 1 from being impaired.

Then, from the starting shaft 8, a measuring device attached to the leading device I measures the position and inclination deviation, and data for direction correction is obtained (see FIG. 8).

Next, determine the amount of direction correction you want to make, and swing the consolidation head 5f (see Figure 9). Advance the Yatsuki 9tI stroke (see Figure 10).
The management equipment FLL120 cutter rotates to cut the earth and sand, turns the waste into slurry, and transfers it to the starting shaft 8.
From there, the buried pipe 3 is advanced with a propelling shirt of $10. In this case, the pilot jack 9 contracts due to the reaction force of the soil (see Figure 11).

By repeating the above six times, when the reaching shaft 11 is reached, the guide device 1 and the excavation type management installation device 2 are recovered and the buried pipe 3 is buried underground.

In the above work process, the guide pipe 4 is attached to the rear of the guide device 1.
The explanation will be given with the guide pipe 4 connected to the tip of the excavation type management and installation device 2.

Furthermore, the purpose of interposing the leading pipe 4 between them is to eliminate the negative effect on the direction correction effect of the leading device 1 using the excavation-type management installation device 2 when the diameter of the leading pipe and the diameter of the buried pipe are extremely different, depending on the construction conditions. In addition, decide on the necessity, number, etc.

12 to 14 are other embodiments of the present invention, in which a leading device 1 without a pilot jack 9 is used. The position, inclination, and
(See Figure 12).

Next, determine the direction and amount of direction correction and swing the tip head s' (see Fig. 13). '・ With the tip head 5' oscillating, the excavation type management installation device 20 cutter rotates to excavate the soil pipe, turn the waste soil into slurry, and transfer it to the starting shaft 8, while propelling the underground pipe 3 from the starting shaft 8 to the jack 10. When the shaft 11 is reached by repeating the above steps, the leading device 1, the excavation type pipe/burying device 2 are recovered, and the buried pipe 3 is dug underground.

As described in detail above, the present invention provides an excavation type management installation device 2 behind a leading device 11 having a direction correction function, and while the guiding device 1 corrects the direction, the excavation type management installation device 2 excavates the ground. After excavation, propulsion jack 1 installed in the starting shaft ε
This management construction method is characterized in that the buried pipe 3 is advanced behind the excavation type management installation device 2 at zero.

Therefore, compared to the conventional construction method in which the leading pipe and buried pipe are moved in two stages, the construction time is reduced to one stage, and the work in the reaching shaft can be carried out using the leading equipment and excavation-type management equipment after penetration. The only work involved is recovery of equipment, etc., and labor-saving can be achieved by towing the work in the starting shaft during propulsion.In areas where the ground is prone to collapse or where water comes out, the starting shaft is used to improve the ground near the mine entrance. (chemical injection, etc.), water stopper installation, etc., but only one time is required, which reduces construction costs.

Furthermore, regarding the accuracy of trenching, the advantages of the conventional two-step method can be maintained, and high accuracy can be achieved.

[Brief explanation of the drawing]

Figures 1 to 4 are diagrams explaining the work process of the conventional controlled construction method, Figure 5 is a diagram explaining the configuration of the equipment used in the construction method of the present invention, and Figure 6 is a diagram explaining the construction of the equipment used in the construction method of the present invention.
The figure is an enlarged view of part ■ in Figure 5, and Figure 7 is the wt-vtr in Figure 6.
8 to 1I are sectional views along aK, and FIGS. 8 to 1I are explanatory views of the working process of the construction method of the present invention, and FIGS. 12 to 14 are explanatory views of other embodiments of the present invention. 1 is a leading device, 2 is a management installation device, and 3 is a buried pipe. Applicant Komatsu Ltd. Representative Patent Attorney Masaaki Yonehara Patent Attorney Tadashi Hamamoto Figure 5 Figure 6 "■" in Figure 7

Claims (1)

[Claims] An excavation main pipe installation device 2 is provided behind the leading device 1 having a direction correction function, and the leading device 1 corrects the direction while the excavation type management equipment 2 excavates the ground. This management construction method is characterized in that a jack 10 is used to advance an installation pipe 3 behind an excavation type management installation device 2.