JP3795859B2 - Propulsion pipe for pipe propulsion method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a propulsion pipe for a pipe propulsion method, and more specifically, when a tunnel is completed by press-fitting and propelling a large number of propulsion pipes by the pipe propulsion method, it is minimum when connecting cables or installing additional branches. The present invention relates to a propulsion pipe for a pipe propulsion method that requires a working space and excavates only the smallest area to save work time and cost.
[0002]
[Prior art]
In recent years, the demand for various infrastructure facilities such as telecommunications equipment, water and sewage systems, railways, roads, city gas, etc. has increased in accordance with the urbanization. It is buried underground for As a result, there is a need to improve the technology of construction methods for underground burial and to improve the construction equipment that performs this.
[0003]
Under such circumstances, not only environmental protection, stability of underground facilities, and economic aspects, but also the problems such as traffic congestion and dust generation in the city center due to the buried underground facilities are minimized in complex site conditions. The pipe propulsion method is a method developed for the purpose of securing an underground space, and is also called a semi-shield method.
[0004]
The pipe propulsion method uses a semi-shield machine called a cylindrical steel excavator to be inserted into the tunnel by vertical work and attached to the tip of the excavator, and a cutter head for earth excavation equipped with a roller cutter and a scraper bit. The ground is excavated by rotating (cutter head). Then, the tunnel surface is prevented from collapsing with various auxiliary construction methods, and at the same time, the tunnel is excavated by repeatedly installing the propulsion pipe provided behind the excavator while being pushed by a hydraulic jack.
[0005]
A propulsion pipe used in a conventional pipe propulsion method will be described with reference to the accompanying drawings.
[0006]
FIG. 1 is a side sectional view showing a conventional pipe for a pipe propulsion method, and FIG. 2 is a sectional view taken along line AA ′ of FIG. As shown in the figure, a conventional pipe propulsion pipe 10 is a cylindrical reinforced concrete structure formed by arranging main reinforcing bars 12 and reinforcing bars 13 inside concrete 11.
[0007]
The propulsion pipe 10 is connected from the entrance to the exit of the tunnel by connecting the opposite ends of the propulsion pipe 10 and the propulsion pipe 10 with the embedded collar 20 when press-fitting and propelling with a hydraulic jack (not shown). To be installed underground.
[0008]
[Problems to be solved by the invention]
However, when such a conventional propulsion pipe 10 is completed by excavating a tunnel and then excavating a certain section vertically to connect cables or install additional branches, drilling is performed on the peripheral surface of the propulsion pipe 10. Since this cannot be done, the propulsion pipe 10 located in the corresponding section must be lifted. Therefore, a work space wider than the space required for connecting cables or installing additional branches is required corresponding to one propulsion pipe 10, and therefore a wasteful wide area must be excavated. This not only wastes working time and costs, but also increases the number of petitions of neighboring residents due to the work, and may cause other propulsion pipes 10 to be impacted when the propulsion pipes 10 are lifted. Had problems.
[0009]
The present invention is for solving the above-mentioned conventional problems, and the object of the present invention is to press-fit a large number of propulsion pipes by a pipe propulsion method to complete a tunnel, and then connect cables or branch them. By excavating only the minimum necessary area for additional installation, the work time and cost will be reduced, the local residents' petition will be reduced by the work, and the propulsion pipe buried underground will be affected by the work It is to provide a propulsion pipe for the pipe propulsion method that does not exceed.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a propulsion pipe used in a pipe propulsion method, wherein the propulsion pipe has an opening formed on a side surface, and a lid is detachably provided in the opening. It is characterized by being.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the invention.
[0012]
FIG. 3 is a side cross-sectional view illustrating a pipe for a pipe propulsion method according to the present invention, and FIG. 4 is a cross-sectional view taken along the line BB ′ of FIG. As shown in the drawing, a propulsion pipe 100 for a pipe propulsion method according to the present invention is a cylindrical reinforced concrete structure formed by arranging a main reinforcing bar 120 and a reinforcing reinforcing bar 130 inside a concrete 110, and has an opening 140 on a side surface. The lid 150 is detachably coupled to the opening 140.
[0013]
The opening 140 may be circular, square, or other various shapes, and can be formed in various sizes depending on the size of the propulsion tube 100. In addition, the opening 140 has a locking projection 141 formed on the inner peripheral surface, and a lid 150 is inserted and mounted inside.
[0014]
The outer peripheral surface of the lid 150 has a shape complementary to the inner peripheral surface of the opening 140. That is, the lid 150 is inserted and mounted in the opening 140 with a protruding portion formed along the outer peripheral surface hooking on the locking projection 141. On the other hand, the lid 150 is preferably inserted into the opening 140 and then fastened with a bolt 155 between the protruding portion of the outer peripheral surface and the locking protrusion 141 of the opening 140. The opening 140 is provided with a sealing member 160 on the inner peripheral surface thereof.
[0015]
The sealing member 160 is made of a material having a certain elasticity, and is preferably made of a rubber material. Therefore, the joint portion of the opening 140 and the lid 150 is sealed by the sealing member 160, and at the same time, it is possible to mitigate the impact on the lid 150 due to vibration generated when the propulsion pipe 100 is propelled.
[0016]
The operation of the propulsion pipe for the pipe propulsion method formed with such a structure is performed as follows.
[0017]
A conventional propulsion pipe 10 is connected by an embedded collar 20 and is pushed into the basement with a hydraulic jack (not shown) to complete the tunnel. At this time, the propulsion pipe 100 of the present invention is inserted between the conventional propulsion pipes 10 so as to be located at a point where the cables are connected or the branch is additionally installed, and a hydraulic jack ( Press-fed with (not shown).
[0018]
When the tunnel is completed, a point where a cable is connected or a branch is additionally installed is excavated vertically until the lid 150 of the propulsion pipe 100 is exposed. At this time, it is not necessary to excavate a wide area corresponding to the area for lifting the propulsion pipe 100, and only an area in a range in which the lid 150 can be separated from the opening 140 of the propulsion pipe 100 may be excavated.
[0019]
When the lid 150 is exposed, the bolt 155 is removed and the lid 150 is separated from the opening 140 of the propulsion tube 100, and then the cable is connected or a branch is additionally installed.
[0020]
On the other hand, the propulsion pipe 100 can be used not only in such a non-open-cut method but also in a cut-open method. Therefore, after the propulsion pipe 100 is connected and buried underground by the open-cut method, the cable can be easily connected through the opening 140 or a branch can be additionally installed as necessary.
[0021]
As described above, according to the preferred embodiment of the present invention, after the tunnel is completed by press-fitting and propelling a large number of propulsion pipes by the pipe propulsion method, the minimum necessary for connecting cables or installing additional branches is provided. Since only a minimum area needs to be excavated so as to form a work space, the work time and cost can be reduced, the petitions of neighboring residents due to the work can be reduced, and the propulsion pipe buried underground Will not be affected.
[0022]
While the preferred embodiment of the present invention has been described above, those skilled in the art will be able to make various improvements and modifications without departing from the scope of the present invention.
[0023]
【The invention's effect】
As described above, the propulsion pipe for the pipe propulsion method according to the present invention is the minimum necessary when a cable is connected or a branch is additionally installed after completing the tunnel by press-fitting and pushing a large number of propulsion pipes by the pipe propulsion method. Only the smallest area needs to be excavated so as to form a limited work space, which saves work time and costs, reduces the petitions of neighboring residents due to work, and is buried underground It has the effect of not affecting the propulsion pipe.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a conventional pipe for a pipe propulsion method.
FIG. 2 is a cross-sectional view taken along line AA ′ of FIG.
FIG. 3 is a side sectional view showing a propulsion pipe for a pipe propulsion method according to the present invention.
4 is a cross-sectional view taken along line BB ′ of FIG.
[Explanation of symbols]
100: Propulsion pipe 110: Concrete 120: Main rebar 130: Reinforcing bar 140: Opening 150: Lid 160: Sealing member

Claims (2)

A propulsion pipe used in the pipe propulsion method,
An opening formed on the side of the propulsion tube ;
A lid coupled to be located in this opening ;
A sealing member that fills and seals the entire gap between the opening and the lid;
A propulsion pipe for a pipe propulsion method, wherein the lid is detachably coupled to the opening via the sealing member . The propulsion pipe for a pipe propulsion method according to claim 1, wherein the lid is detachably coupled to the opening of the propulsion pipe by a bolt.

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