JPS62202198A - Method of construction of pipe propulsion - 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 is applicable to ultra-small diameter pipes (φ25
This article concerns the pipe propulsion method for underground pipes (less than 0).

Conventional technology Conventionally, in small-diameter propulsion machines, propulsion is carried out using Huum tubes (# tubes) with diameters of 250 to 900 u.Power S1 Electricity, gas,
φ2 for construction of ultra-small diameter pipes (φ250 or less) such as water pipes
The sheath tube system was adopted, using more than 50 tubes.

Problems that I tried to solve with inventionsHowever, with this method, there was a loss both economically and in terms of time.

The present invention has been made in view of the above circumstances, and its purpose is particularly for ultra-small diameter pipes (φ250 or less).
The object of the present invention is to provide a pipe propulsion method that enables efficient, accurate, and economical underground construction.

Means and Operation for Solving the Problems In order to achieve the above objects, the present invention provides a method for rotating the cutter head 5 of the drilling pilot head in the starting shaft and propelling it by a rear propulsion device. Connect the pilot pipes 17 one after another while propelling the pilot head A8, and after recovering the excavation pilot head A from the shaft, lay the buried pipe 2o inside the pilot pipe 17, and while pulling back these pilot pipes 17, connect the pilot pipes 17 one after another. 17
A filling material is filled between the underground pipe 20 and the ground formed by the receding of the pipe.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. 1st
The figure shows the drilling pilot head person.

This excavation pilot head A is equipped with a head body 1, in which a rotary drive device 2 is provided so as to be able to swing. A swinging jack 3 is provided for moving to correct the direction.

The rotary shaft 4 of the rotary drive device 2 protrudes to the front of the head body 1, and a cutter head 5 is attached to this rotary shaft 4. A plurality of intake ports 6 are provided on the front surface of the cutter head 5. These intake ports 6 are provided with cutters 7.

8 is an electric inclinometer, and 9 is a target.

Further, the head body 1 is provided with a water supply pipe 10, a slurry discharge pipe 11, and a crab.

Next, we will explain the pipe propulsion method T6: For example, when a buried pipe is to be buried in a road B, a starting shaft 12 is excavated on one side of the road B, and a reaching shaft 13 is excavated on the other side.

A rail 14 and a reaction plate 15 are installed inside the starting shaft 12, and a rear propulsion jack 16 is movably installed on the rail 14.

The excavation pilot head person is placed on the rail 14, the cutter head 5 is rotated, and the excavation pilot head A8 is propelled by the rear propulsion jack 16 while connecting the pilot pipes 17 one after another (see Fig. 2 (2)).

The pilot pipe 17 is provided with conduits 18 and 19, and when connecting the excavation pilot head A and the pilot pipe 17, the water supply pipes 1o and -1 are connected to the conduit I8 by force 1,
A force S connection is made between the slurry discharge pipe 11 and the other conduit 19 . Furthermore, when connecting the pilot pipes 17, the conduits 18 and 19 are connected to each other.

In the excavation pilot head A, the cutter head 5 is rotated by a force S by the drive of the rotary drive device 2, and the earth and sand excavated by the cutter 7 is taken into the interior through the intake port 6 and water supplied from the water supply pipe 10. The soil becomes slurry due to
8n1 This slurry is discharged to the outside through the slurry discharge pipe 11.

After digging in this way, when the drilling pilot head T reaches the reaching shaft 13, the drilling pilot head A
Collect (see Figure 2 ■).

Next, install the buried pipe 20 inside the pilot pipe 17 (see Fig. 2 (■)), and install the rear propulsion jack 16.
17 is pulled back, these pilot pipes] The cement milk 21, which is a filling material, is removed from the pilot pipe 17 by the conduit 19 of 7, and the ground 22 and the buried pipe 2o
Fill in between.

Effects of the Invention As described above, the present invention rotates the cutter head 5 of the drilling pilot head in the starting shaft 12 and propels it by the rear propulsion device]6, and while the drilling pilot head A is propelled, the pilot pipes Connect 17,
After the excavation pilot head 8 was recovered from the reaching shaft 13, the buried pipe 20 was laid in pylon W+7, and while these pilot pipes 178 were pulled back, the buried pipe 20 was connected to the ground created by the retreat of the Lahairot pipe 17. Because the filler is filled in between, it is especially suitable for ultra-small diameter pipes (φ250 or less).
It is possible to perform the burial process efficiently, accurately, and economically.

[Brief explanation of drawings]

Figure 1 is a vertical sectional view of the drilling pilot head, Figure 2
■, ■, @ are explanatory diagrams of the construction method of the present invention. 17 is the pilot pipe, 20 is the buried pipe, and the person is the excavation pilot head.

Claims (1)

[Claims] The cutter head 5 of the drilling pilot head A is rotated in the starting shaft and propelled by the rear propulsion device, and while the drilling pilot head A is being propelled, the pilot pipes 17 are connected one after another, and the drilling pilot head A is recovered from the arrival shaft. After that, buried pipes 20 were laid inside the pilot pipes 17, and while these pilot pipes 17 were pulled back, a filler material was filled between the underground pipes 20 and the ground created by the retreat of the pilot pipes 17. A pipe propulsion method characterized by: