KR102197032B1 - Structure of steel pipe for work area to facilitate dismantling - Google Patents

Abstract

The present invention relates to a structure of a steel pipe for a work area that facilitates dismantling, and more particularly, when constructing an underground tunnel or a sewer by a shield and semi-shield method for expanding urban infrastructure After the tunnel construction is completed, the steel pipes that build up a vertical work area that serves as a passage for discharging the soil and rock mass generated during excavation after the installation of the excavation machine are divided and combined so that the steel pipe can be removed more easily. It relates to a structure of a steel pipe for a work tool that facilitates disassembly.
The structure of the steel pipe for the work tool that facilitates the dismantling of the present invention is divided into a buried pipe buried in the ground after the tunnel work and a discharge pipe taken out after the tunnel work, so that the total length connecting them is a length corresponding to the planned depth of the work tool. It is made and the buried pipe and the discharge pipe is characterized in that it is made integrally connected as a plurality of connecting devices.

Description

Structure of steel pipe for work area to facilitate dismantling}

The present invention relates to a structure of a steel pipe for a work area that facilitates dismantling, and more particularly, when constructing an underground tunnel or a sewer by a shield and semi-shield method for expanding urban infrastructure After the tunnel construction is completed, the steel pipes that form a vertical work area that serves as a passageway for discharging the soil and rock mass generated during excavation are divided and combined to facilitate extraction so that the steel pipes can be removed more easily. It relates to a structure of a steel pipe for a work tool that facilitates disassembly.

In general, a work tool (vertical port) is a type of vertical tunnel that connects vertically from the ground to an underground tunnel in order to excavate a tunnel or sewer. During tunnel construction, various equipment and construction materials are transported and moved from the ground. It serves as a passage to discharge the soil and rock generated in the ground to the ground, and after the tunnel is completed, it connects the mobile passage of the manager and various cables of communication or power outlets from the underground tunnel to the ground, and for inspection and repair. It is used as a manhole to enter and exit.

In the shield and semi-shield construction method, after installing the machine in the underground depth targeting the excavation machine to excavate the underground tunnel, the machine excavates horizontally along the target tunnel path. In order to prevent the wall from collapsing when excavating a work tool for installation at a depth, the strut method, lining method, JSP ground improvement method, SEC underground continuous wall method and trench cutter are used. Wall temporary facility construction methods such as the underground continuous wall construction method are applied.

However, these construction methods have difficulty in the process of excavating the ground from the surface to the basement vertically to the design depth after completion of the order and temporary facility construction, and constructing the wall structure from the basement. The construction cost increases, and there is a problem in that traffic inconvenience and noise are generated due to the large equipment required for temporary facility construction.

Therefore, without the hassle of constructing a separate temporary facility wall on a soft ground with a lot of underground materials such as narrow road areas and neighborhoods adjacent to houses, it is safe to prevent the subsidence of the adjacent ground due to disturbance of the surrounding ground and outflow of groundwater. As a construction method of forming a steel pipe work tool, a method of press-fitting construction is widely used.

However, after the tunnel construction is finished, the work area is blocked by leaving a manhole that can be accessed by people at the bottom and filling the rest. In this case, the upper steel pipe cut along the circumference excluding the lower part of the steel pipe where the manhole is located is removed. After taking out with a drawer, etc., backfilling is performed.

In this way, when cutting to take out a steel pipe, groundwater from the cut part is often introduced into the interior, so before cutting, grouting material is injected into the ground outside of the cutting part, and then cutting is done first. Therefore, it takes a lot of trouble and extra cost in the work according to the grouting work, and it takes a lot of time to cut a steel pipe having a relatively large diameter and thickness as a cutter, and it has various problems such as lengthening the construction period.

An object of the present invention is to solve the above-described problems, and the steel pipes are divided into an extraction pipe and a buried pipe, but they are connected to each other so that they can be separated. It is to provide a structure of a steel pipe for a work tool that facilitates disassembly that can take out the steel pipe very efficiently and conveniently by allowing only the pipe to be taken out.

The present invention is a means for achieving this object, and is divided into a buried pipe buried in the ground after a tunnel operation and a discharge pipe taken out after the tunnel operation, and the total length connecting them is made of a length corresponding to the planned depth of the work tool. The buried pipe and the take-out pipe are a steel pipe for work tools that are integrally connected so as to be disassembled as a connection device, wherein the connection device includes an a-shaped single entry part symmetrically inserted into the inside of the connection end of the buried pipe and the take-out pipe , A rubber plate that is inserted into the single entry portion to watertightly block the gap between the connection ends, two iron plates that are in close contact with the outer surface of the rubber plate and fixed by bolts to each connection end, and from the inside of the connection end of the take-out pipe and the buried pipe. It provides a structure of a steel pipe for a work tool that facilitates disassembly, characterized in that it consists of a plurality of c-shaped connectors that are welded together to connect the take-out pipe and the buried pipe.

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As described above, the present invention can easily divide the steel pipe by cutting only a few simple connections without the need to divide and cut the steel pipe along the circumference or grouting the steel pipe constituting the work tool. It can be done very efficiently and does not require the work of cutting the entire steel pipe along the circumference, so it not only reduces various harmful effects caused by long cutting work, but also shortens the working time and reduces the time required for cutting and grouting work. It is a very useful invention in that it provides an economical effect by significantly reducing the resulting cost.

1 is a cross-sectional view of an installation state of a steel pipe according to an embodiment of the present invention
FIG. 2 is an enlarged exploded perspective view of part "A" of FIG. 1
3 is a plan view of a steel pipe according to the present invention
4 is a cross-sectional view taken along line "A-A" of FIG.
5 is an exemplary view showing a state in which the rubber plate is torn when the take-out pipe is withdrawn
6 is an exemplary view of the take-out state of the take-out pipe according to the dismantling of the connecting device

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figs. 1 to 6, the present invention is divided into a buried pipe 10 buried in the ground after a tunnel operation and a discharge pipe 20 taken out after the tunnel operation, and the total length connecting them is the plan of the work tool. In the steel pipe for a work tool consisting of a length corresponding to the depth, the buried pipe 10 and the take-out pipe 20 are integrally connected to be disassembled as a connecting device 30, the connecting device 30 is a buried pipe (10) and an a-shaped cut-out part (11) (21) symmetrically connected to the inside of the connecting end part (10') (20') of the take-out pipe (20), and the cut-out part (11) (21) A rubber plate 40 that is inserted into the rubber plate 40 to block the gap between the connection ends 10 ′ and 20 ′ in a watertight manner, and a bolt on each connection end 10 ′ and 20 ′ by being in close contact with the outer surface of the rubber plate 40. From the inside of the two steel plates 60 and 60' that are fixed as 50) (50') and the connecting ends 10' and 20' of the take-out pipe 20 and the buried pipe 10, the take-out pipe 20 ) And the buried pipe 10 are integrally welded to each other and are characterized by consisting of a plurality of C-shaped connectors 70 and 70'.

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In the drawings, unexplained reference numeral 80 denotes a manhole, and 81 denotes a ladder pipe connected and installed with the manhole 80.

In the present invention as described above, the steel pipe 100 forming the work tool is not configured as a single tube as in the prior art, but is divided and connected to the connection device 30. If only the connection device 30 is removed after the tunnel is completed, the buried pipe (10) and the take-out pipe 20 are simply separated to facilitate the take-out of the take-out pipe 20, and the total length of the steel pipe 100 connected by the connecting device 30 is the planned depth. The connecting device 30 connecting the steel pipe 100 divided into the take-out pipe 20 and the buried pipe 10 is formed in a length corresponding to that of the buried pipe 10 and the outlet pipe 20 The end portion (10') (20') and a rubber plate (40) that is inserted into the cut-out portion (11) (21) formed symmetrically in an a-shaped shape to maintain watertightness, and the Two iron plates 60, 60', which are in close contact with the outer surface of the rubber plate 40 and fixed as bolts 50 and 50' to each connection end 10', 20', and a take-out pipe 20 A plurality of U-shaped connectors 70 and 70 ′ that weld the take-out pipe 20 and the buried pipe 10 to be integrally connected from the inside of the connection end (10') (20') of the buried pipe (10) ) To maintain watertightness and to form a work tool to achieve the purpose of sturdyly connecting each other when pressed into the ground.

When explaining the connection process of the above-described connection device 30 in more detail, the b-shaped single entry portion formed on the inside of the connection end portion 10 ′ and 20 ′ between the buried pipe 10 and the outlet pipe 20 11) When (21) is connected so that they face each other, the a-shaped single entry portion 11, 21 is a combination of the two single entry portions 11 and 21 to form a c-shaped composite single entry portion. 40) and attach the two divided steel plates 60, 60' to the outer surface of each steel plate 60, 60' as bolts 50, 50' and take out the buried pipe 10 When each screw is fixed to the pipe (20), the buried pipe (10) and the take-out pipe (20) are connected in a watertight state by a rubber plate (40), and in this state, the c-shaped connectors (70, 70) When welding the buried pipe 10 and the take-out pipe 20 as'), the two divided pipe bodies are integrally connected to form a single-piece steel pipe 100 having a length corresponding to the planned depth of the work tool.

Therefore, as in the conventional monolithic steel pipe 100, it is pressed into the ground to form a working tool, and the interval between the divided buried pipe 10 and the take-out pipe 20 is inserted into the single entry portions 11 and 21 The steel plate 60 (60') is in close contact with the outer surface of the rubber plate 40 to prevent external water from flowing into the inside based on the rubber plate 40 that is tightly fixed with two steel plates 60 and 60'. Since the bolts 50 and 50 ′ are screwed together, when the rubber plate 40 is pressed into the ground, the steel pipe 100 is protected from penetration or damage by the soil, thereby preventing a decrease in adhesion.

This rubber plate 40 serves to block the gap between the take-out pipe 20 and the buried pipe 10, so it is a material having a relatively thick thickness and excellent durability in consideration of being compressed when pressed as bolts 50 and 50'. Consists of

And the connector 70 (70') for integrally fixing the buried pipe 10 and the take-out pipe 20 connected by the rubber plate 40 as described above is made of a c-shaped metal material, and the buried pipe 10 and the outlet pipe There is no problem in forming the integrated steel pipe 100, if there is no problem in forming the integrated steel pipe 100, if there is no problem in forming the integrated steel pipe 100, if there is no problem in forming the integrated steel pipe 100, if there is no problem in forming the integrated steel pipe 100, as in the embodiment of the accompanying drawings, if four or so are welded together as in the embodiment of the accompanying drawings.

When dismantling the steel pipe 100 after the tunnel work, the connection device 30 is dismantled so that the buried pipe 10 remains buried in the ground, and only the take-out pipe 20 is pulled out to the ground. When the weld bead is blown out or cut between the welded c-shaped connections, the take-out pipe 20 and the buried pipe 10 are connected only by a rubber plate 40 of low strength. When the tube 20 is pulled while swinging, the rubber plate 40 is easily torn. At this time, the rubber plate 40 is torn between the two steel plates 60 and 60' fixed in close contact with the outer surface as shown in FIG. Therefore, the connection structure between the take-out pipe 20 and the buried pipe 10 is disassembled so that only the take-out pipe 20 can be taken out to the ground by a drawing device, and the work tool can be refilled after taking out.

When the manhole 80 is installed in the work area as in the embodiment of the accompanying drawings, the ladder pipe 81 connected to the manhole 80 is installed to be connected to the ground, and the take-out pipe 20 is taken out and attempted to backfill. Just do it.

In this way, the present invention does not constitute a single body of the steel pipe 100, but is divided into a buried pipe 10 and a take-out pipe 20, and is buried in the ground in a state temporarily connected by the connecting device 30 to form a working tool and a tunnel. After the work is completed, the connecting device 30 is disassembled so that only the take-out pipe 20 can be taken out, so there is no hassle and difficulty in the work of cutting along the circumference as in the prior art, and in particular, grouting work for order is not performed. Since it is not required, the effect is very great, such as saving construction cost and shortening the construction period.

10: buried pipe 10', 20': connection end 11, 21: single entry 20: outlet pipe 30: connecting device 40: rubber plate 50, 50': bolt 60, 60': steel plate 70, 70': connector 80: manhole 81: ladder pipe 100: steel pipe

Claims (2)

The buried pipe 10 is divided into a buried pipe 10 buried in the ground after the tunnel work and an outlet pipe 20 taken out after the tunnel work, and the total length connected thereto is made of a length corresponding to the planned depth of the work zone, and the buried pipe 10 And the take-out pipe 20 is a steel pipe for a work tool made integrally connected to be disassembled as a connection device 30, the connection device 30 is the connection end 10 of the buried pipe 10 and the take-out pipe 20 ') (20') between the a-shaped cutout (11) (21) symmetrically inserted into the inner side, and the connecting end (10') (20') inserted into the cutout (11) (21) A rubber plate 40 that blocks the gap in a watertight manner, and two iron plates that are in close contact with the outer surface of the rubber plate 40 and fixed as bolts 50 and 50 ′ to each connection end 10 ′ and 20 ′. 60) (60'), and from the inside of the connecting end (10') (20') of the take-out pipe (20) and the buried pipe (10), weld the take-out pipe (20) and the buried pipe (10) to be integrally connected. Structure of a steel pipe for a work tool that facilitates disassembly, characterized in that consisting of a plurality of C-shaped connector (70) (70').
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