KR20230163984A - Th method of of burying the protection steel pipe horizontally without excavation - Google Patents

Abstract

The present invention includes a plurality of horizontal steel pipes that are interconnected in the horizontal direction from the user communication manhole to the side of the utility pole, and are connected vertically through a connection means to the horizontal steel pipes on the side of the utility pole, running along the side of the pole. It is composed of a vertical pipe that rises in the vertical direction, and allows a trunk cable or synthetic resin pipe to be inserted through an insertion passage formed by a plurality of horizontal steel pipes interconnected with the riser pipe between the user communication manhole and the utility pole. It is a buried structure of protective steel pipe. The present invention minimizes the risk of collision with existing buried objects such as water pipes or gas pipes by burying the trunk protection steel pipe at the shallowest possible depth, while minimizing the inconvenience to local residents during the construction process and preventing damage due to impact or load. It has the effect of reducing construction costs required for underground entry of public lines as much as possible while preventing deformation or deformation.

Description

{Th method of burying the protection steel pipe horizontally without excavation}

The present invention relates to a protective steel pipe buried structure and a non-excavating horizontal burial method for overhead communication cable trunk lines buried between the utility poles of the road and the user communication manhole or site boundary line of the building. In particular, during the construction process, local residents It minimizes inconvenience, sufficiently withstands various loads after burial construction, prevents damage to the trunk cable or trunk pipe, maintains the internal space, prevents soil collapse, and reduces overall construction costs. This relates to the buried structure of protective steel pipes for overhead communication cables and the horizontal burial method without digging.

In general, the trunk line, also called the incoming line or subscriber line, belongs to the end of the business communication line and must be connected to the extension line, which is the user communication line, and the trunk line terminal box.

According to the law regulating the installation standards for broadcasting and communication facilities, the building owner, who is responsible for installing user communication line facilities to which 5 or more public lines are connected, must comply with the regulations on technical standards for broadcasting and communication facilities, as shown in Figure 1. Inside the property boundary line, the trunk terminal box, user communication manhole, and user pipe inlet are buried and installed.

In this case, broadcasting and communication service providers have the obligation to connect to the premises communication line by installing a trunk line to the trunk terminal box via the user trunk line pipe installed up to the property boundary line.

Nevertheless, the public lines installed by broadcasting and communication service providers cannot be routed through the public line incoming pipes buried underground, and for reasons such as shortening the construction period and convenience of construction, distributors are installed on the outer wall of the building or on the roof of the building, as shown in Figure 3. There were many cases where it entered the room through the windows of the building.

The reason was that, as shown in Figures 2 and 4, the broadcasting and communication service provider did not fulfill its obligation to install a business main line incoming pipe from Jeonju to the property line.

Under these conditions, the Internet installation engineer who installed the public line installed the national line branching from the exchange facility in Jeonju by breaking through the window of the subscriber's building and entering the building.

As a result, the surroundings of buildings and alleys gradually became cluttered with communication lines of broadcasting and communication companies, and as complaints about this became frequent, aerial line maintenance work has been carried out nationwide since 2013.

However, the maintenance work on aerial lines carried out so far was merely a matter of tying together several strands of public lines. As a result, it was not possible to solve the problem of national elections becoming crowded again after a certain period of time. The most efficient way to prevent trunk lines from becoming crowded is to allow the trunk lines to enter the trunk pipe and connect to the premises line at the trunk terminal box.

In particular, buildings with more than 5 public lines are required to route the public lines underground, as shown in Figures 2 and 4. In order to lead public lines underground, the building owner installs a user communication manhole and buries user pipes for public lines up to the property boundary line.

In addition, from the property boundary line to the utility pole 200, the broadcasting and communication business operator must bury the business trunk line piping 310 and lead the trunk line 300 into it, as shown in FIG. 2.

As shown in FIG. 2, the commercial public line inlet pipe 310 buried between the electric pole and the user communication manhole 100 is installed with residents living in and around the building. Therefore, there is a need to minimize inconvenience to residents.

The present inventor has previously applied for a method and device for burying a commercial incoming and outgoing pipe on a path from Jeonju to a user communication manhole using a horizontal drilling method, which is a non-excavating method.

The earlier applicants are No. 10-2019-0088736 (Installation method for road inlet pipes for subscriber lines), No. 10-2020-0007866 (Installation method for roadside main line inlet pipes), and No. 10-2020-007863 (Horizontal drilling for internal installation of user communication manholes) device).

Since the present invention has been further developed based on the technical ideas of the earlier applicants, the description in the earlier application is omitted for convenience, but the technical description in the earlier application may also be applied as is in this specification.

According to Article 47 of the technical standards for grounding equipment, premises communication equipment, line equipment and communication equipment, communication pipes buried in the road must comply with the standards for burial depth prescribed by the Road Act Enforcement Decree, and must maintain a gap of 50 cm from other buried objects such as gas. must be maintained. However, it is stipulated that when pipe protection measures such as installing a protective wall are taken, the regulations on burial depth and spacing may not be observed.

The construction of the underground communication cable's main line inlet pipe performed by the operator must be carried out while minimizing the inconvenience to residents. After construction, damage due to various loads is prevented, the space inside the pipe is maintained as is, and the soil cave-in is prevented. It is desirable to prevent this and reduce the burden of construction costs.

Republic of Korea Patent Publication No. 10-0447871 (announced on September 16, 2004) Republic of Korea Patent Publication No. 10-0447872 (announced on September 16, 2004)

The present invention relates to a buried structure of protective steel pipes for overhead communication cables buried between utility poles and user communication manholes of buildings or land boundaries. In particular, it minimizes inconvenience to residents during the construction process and provides sufficient protection for various loads. The purpose is to provide a protective steel pipe buried structure for overhead communication cable trunk lines that can withstand damage, prevent damage, maintain internal space, and reduce overall construction costs.

According to the form of the present invention for achieving the above object, a horizontal buried device is installed in the space below the user communication manhole or boundary stone, and after excavating a pole side pit vertically downward on the side of the utility pole, the horizontal buried device is installed. Connected horizontal buried rods that are movable and interconnected are buried by extending from the user communication manhole to the side pit. The connected horizontal buried rods are made of horizontal steel pipes with an insertion passage formed in the center, and the horizontal steel pipes are installed to block the inflow of foreign substances. When the tip inserted into the tip of the pipe reaches the destination, the bottom of the utility pole or boundary stone, the tip bit is removed, and at the end, it is interconnected with a vertical pipe or a horizontal steel pipe in another direction through a connecting means such as a connector or connection box. A protection steel pipe buried structure for an overhead communication cable trunk line is provided, which allows insertion of a synthetic resin pipe or trunk cable into the formed internal insertion passage.

The present invention, constructed as described above, is constructed using a non-excavating method, thereby minimizing inconvenience to residents during construction, and the trunk protection steel pipe is strong enough to maintain the shape of the pipe not only under load but also under accidental shock load. Also, since it is a solid protection facility for the main line inlet pipe, even if buried at the shallowest depth, it prevents the surrounding soil from being damaged due to accidental impact or being crushed by the loading load, and the surrounding soil caves in. It also reduces the risk of damaging other existing underground facilities during construction. This has the effect of greatly reducing the overall construction cost.

Figure 1 is a standard diagram of the trunk line inlet piping in the case of having 5 or more lines.
Figure 2 is a diagram showing the buried location of the business operator's public line incoming pipe.
Figure 3 is a diagram showing that the public line is installed illegally.
Figure 4 is a diagram showing that the public line is installed in compliance with the law.
Figure 5 is a diagram specifically showing an example of a horizontal buried device installed in a user communication manhole or a pit at the bottom of a boundary stone.
Figure 6 is a diagram showing the process of burying a horizontal steel pipe to the side of the utility pole using a horizontal burial device installed inside the user communication manhole.
Figure 7 is a diagram showing the process of burying a horizontal steel pipe to the side of the utility pole using a horizontal burial device installed inside the lower pit of the boundary stone.
Figure 8 is a view showing the state in which horizontal steel pipes are interconnected
Figure 9 is a perspective view showing the overall interconnection state of horizontal steel pipes, connecting means, and standing pipes.
Figures 10 and 11 are diagrams illustrating a path in which horizontal steel pipes are directly connected from the user communication manhole to the side of the utility pole.
Figure 12 is a perspective view showing the overall interconnection state of transverse horizontal steel pipes, longitudinal horizontal steel pipes, connecting means, and granular pipes.
Figures 13 and 14 are diagrams illustrating the path when longitudinal horizontal steel pipes are buried from the lower space of the boundary stone to the side of the utility pole.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The present invention may be implemented in many different forms and is not limited to the embodiments described herein. Please note that the drawings are schematic and not drawn to scale. The relative dimensions and proportions of parts in the drawings are shown exaggerated or reduced in size for clarity and convenience in the drawings, and any dimensions are illustrative only and are not limiting. And for identical structures, elements, or parts that appear in two or more drawings, the same reference numerals are used to indicate similar features.

The features and advantages of the present invention will become more apparent with the following detailed description of the preferred embodiment based on the accompanying drawings. Prior to this, the terms and words used in this specification and claims are based on the technical idea of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain the invention in the best way. It must be interpreted with corresponding meaning and concept.

Hereinafter, in describing embodiments of the present invention in detail with reference to the drawings, the same symbols are used for the same components, and for clarity, only the different parts are mainly described to avoid overlap as much as possible.

In the present invention, the use of steel pipes as a protection facility for national or national incoming pipes has an important technical significance that is distinct from the inventor's previous applications.

Communication pipes are generally made by extrusion molding of synthetic resin with low friction resistance to facilitate the insertion of communication cables. These synthetic resin communication pipes are vulnerable to shock loads and loading loads. When an excavator, etc. hits a synthetic resin communication pipe, it is vulnerable to impact loads to the extent that it is immediately damaged, and when a large loading load is applied, it is deformed flat, making it difficult to preserve the internal space, and a cave-in phenomenon may occur due to surrounding soil.

In contrast, steel pipes have the characteristic of being able to maintain their internal space without being damaged even when exposed to the ground and directly subjected to external shock or load. Due to the characteristics of these steel pipes, when it is necessary to protect facilities exposed on the ground, such as electric wires or synthetic resin pipes, galvanized steel pipes or steel plates are used as protection facilities for exposed facilities.

In existing residential areas, construction of a public line extending from Jeonju to the user communication manhole (100) is generally carried out while residents reside. In this situation, the construction work of public cables or public service pipes must be done carefully to avoid damage to existing road facilities such as water pipes or gas pipes.

If the trunk cable or trunk pipe is wrapped with a protective steel pipe, it has sufficient resistance to external shock or load, so there is no need to worry about damage or crushing even if the buried depth is sufficiently shallow. If the burial depth of the national cable or national incoming pipe is sufficiently shallow below the road pavement layer, the risk of encountering and damaging existing road occupancy facilities such as water pipes or gas pipes during the burial construction process is greatly reduced, thus reducing the resulting risk. It is of great help in reducing costs and risks.

Since liquid or gas flows inside water pipes or gas pipes, to prevent freezing and bursting in winter, electrical conduit pipes require a certain burial depth to prevent risks caused by exposure of wires. In comparison, there is no need to prevent the risk of freezing or bursting of communication lines inserted inside the communication pipe.

It is sufficient as long as it is not easily damaged by impacts from excavators used during repair work on other buried structures and maintains the original shape of the pipe even under the load from the upper part. Steel pipes fulfill these functions simultaneously. For the exposed ground, galvanized steel pipes used for protection pipes such as electric wires or water pipes or gas pipes are sufficient. Galvanized steel pipes have relatively sufficient corrosion resistance.

In the present invention, a synthetic resin trunk line inlet pipe extending as one body from the user communication manhole 100 to the inlet pole is inserted into the inside of the trunk line protection steel pipe made of a plurality of horizontal steel pipes 560 interconnected, and then inserted into the trunk line protection steel pipe. A trunk line cable may be inserted, or a trunk line cable may be inserted directly. Additionally, the synthetic resin main line inlet pipe may be one, or it may be divided into multiple pieces.

Since this CO line protection steel pipe can greatly improve the function of preventing damage to the CO cable or CO line inlet pipe inserted therein due to shock or load, it can be installed from the utility pole 200 to the user communication manhole 100 or the bottom of the boundary stone. It becomes possible to bury it as shallowly as possible under the road pavement layer on the path leading to the space 410.

In this way, the present invention minimizes the risk of collision with existing buried objects such as water pipes or gas pipes by burying the trunk protection steel pipe at a shallow depth, while minimizing the inconvenience to local residents during the construction process and protecting against shock or load. It has the advantage of efficiently preventing damage to the conduit and reducing overall construction costs as much as possible.

Below, the structure and method of burying the public line protection steel pipe will be explained in detail.

A horizontal buried device 500 is installed inside the user communication manhole 100 or the boundary stone lower pit 410, and horizontal drilling is performed by continuously connecting buried connecting rods on which tip bits 510 are mounted at the tip of the device to reach the destination boundary. Reaching the pit or pole side pit 210 is a technical concept similar to the previously filed horizontal drilling method. As shown in FIG. 5, horizontal steel pipes 560 with a length shorter than the width in the direction in which the horizontal steel pipes of the communication manhole 100 are buried are installed one by one in the horizontal direction burial device 500, and horizontal steel pipes are formed by horizontal drilling. (560) are buried in succession.

However, in the present invention, the buried connecting rods used in the process of horizontal burial work and connected to each other use horizontal steel pipes 560 with an insertion passage formed in the center, and are inserted into the distal end of the horizontal steel pipe 560 to form a central portion. When the tip bit 510, which blocks the insertion passage formed and blocks the inflow of foreign substances during construction, reaches the pole side pit 210 or the bottom pit 410 of the boundary stone, the tip bit 510 is removed, and the connecting means By connecting to the standing pipe through (563), the trunk cable or synthetic resin trunk line inlet pipe can be inserted using the insertion passage formed from the user communication manhole (100) to the bottom pit (410) of the boundary stone or the pole side pit (210). What distinguishes it from a prior application is that it must be a public-appointed protected steel pipe.

The public service line piping is installed and managed by the user from the user communication manhole (100) to the property line, and the business service line service line piping (310) is installed and managed by the broadcasting and communication business operator from the site line to the utility pole (200). It is divided into

In the embodiment of the present invention, the user communication manhole (100), the boundary stone lower pit (410), the pole side pit (210), and the crossing along the route of the public line protection steel pipe rather than dividing the user's public line inlet pipe or the business operator's public line inlet pipe (310). It is described in terms such as a directional horizontal pipe 561, a longitudinal horizontal pipe 562, a connecting means 563, and a vertical pipe 564.

The trunk protection steel pipe is buried in the following three types depending on the relative arrangement of the user communication manhole (100) or the user trunk pipe and the utility pole (200).

The first is a case where the trunk protection steel pipe is buried in a straight line from the user communication manhole 100 to the lead pole 200, as shown in FIGS. 9, 10, and 11.

At this time, the public line protection steel pipe becomes a transverse horizontal steel pipe 561 in which a plurality of horizontal steel pipes are connected to each other. This transverse horizontal steel pipe 561 is connected to a granular pipe 564 that rises along the side of the incoming electric pole in the electric pole pit 210. A connection means 563 such as a connector pipe or connection box may be used in the connection portion. It is preferable that a steel pipe is used as the granular pipe 564, but it is understandable that a synthetic resin pipe may be used as needed. When the connection work is completed, the electric pole side pit 210 is filled to restore it to its original state.

Second, as shown in FIG. 13, the public line inlet pipe is buried up to the property boundary line, and the inlet pole is placed at a distance from the roadside equal to the end of the state line inlet pipe extending from the user communication manhole, so that the longitudinal horizontal steel pipe is formed along the roadside. This is a case where burial is necessary.

Thirdly, as shown in Figures 12 and 14, the utility pole is placed at an angle on the road across from the user communication manhole, and horizontal steel pipes need to be buried in both the transverse and longitudinal directions of the road.

At this time, the public line protection steel pipe is a transverse horizontal steel pipe (561) in which short steel pipes are screwed together and connected in a straight line from the user communication manhole (100) to the bottom pit of the boundary stone, and a plurality of horizontal steel pipes from the bottom pit of the boundary stone to the entrance pole (200). A longitudinal horizontal steel pipe 562 is installed in which the steel pipes are interconnected and connected in a straight line. The transverse horizontal steel pipe 561 and the longitudinal horizontal steel pipe 562 are connected to the boundary stone lower pit 410 by a connection means 563 such as a connector pipe or connection box, and the longitudinal horizontal steel pipe 562 is connected to the electric pole pit. At (210), it is connected to a standing pipe (564) running along the side of the lead pole (200). A connection means 563 such as a connector pipe or connection box may be used in the connection portion. It is preferable that the granular pipe 564 is also a steel pipe. When the connection work is completed, the boundary stone lower pit (410) and the pole side pit (210) are filled to restore their original state.

A pole side pit 210 is excavated on the side of the lead pole 200 to the required depth, and a hole is inserted at the ends of the longitudinal horizontal steel pipes that are horizontally buried using the horizontal buried device 500 to prevent the inflow of foreign substances. When the tip bit 510 reaches the pole side pit 210, after dismantling the tip bit 510, one end of the longitudinal horizontal steel pipe 562 is connected to the user's main line inlet pipe () at the boundary stone lower pit 410. After completing the installation work of the entire trunk protection steel pipe by connecting it to the granular pipe 564 that rises along the side of the pole through a connection means 563 such as a connector pipe or connection box in the pole pit 210, The boundary stone lower pit (410) and the Jeonju side pit (210) are restored to their original state and finished.

We consider how the components of the present invention contribute to the overall effect.

Installation of a horizontal buried device in the internal space of a user communication manhole: Inconvenience to residents caused by the construction due to the omission of separate excavation and recovery work to secure installation space for the horizontal drainage device required in the non-excavating horizontal buried method. and reduce construction costs.

Installation of a horizontal burial device in the lower pit 410 of the boundary stone: Since other buried objects are not buried in the lower space of the boundary stone along its length, use of that space greatly reduces the possibility of encountering other buried objects. Additionally, since the boundary stone is an independent structure, it is easy to independently lift and restore it. As a result, the overall construction cost for securing and restoring space for installing horizontal buried devices is reduced.

Common boundary stones installed in residential areas are relatively long in length and small in width and are made of concrete or stone as an independent structure. If this unique structure, the boundary stone, is lifted out by cutting the boundary line with a road cutting saw and installing a horizontal burial device in the lower space, the construction cost required for the formation and restoration of the site can be greatly reduced.

The utility pole side pit 210 is dug on the side of the lead-in pole 200, and the granular pipe 564, which descends along the pole, and the horizontal steel pipe 561 in the transverse direction or the horizontal steel pipe 562 in the longitudinal direction meet to form a connector or connection. A space connected to each other is provided through a box-like connection means 563.

As explained in my earlier application, this pole side pit 210 is restored after being drilled into the shape of a cylindrical hole with a vertical core drill, and then the standing pipe installed on the pole side is connected to the horizontal steel pipes through the connection means. do. This cylindrical hole helps make drilling and recovery operations simple.

Multiple horizontal steel pipes interconnected: Having a structure in which multiple horizontal steel pipes, which have excellent resistance to impact or load, are interconnected requires horizontal burial work to be carried out in a manhole or bottom pit of a boundary stone, so the length of the steel pipe is limited. It has a structure where multiple pieces are interconnected to reach the destination.

In addition, while the general horizontal burial method involves the process of pulling the target object, such as a synthetic resin pipe, back to the starting point after the interconnected horizontal buried rods starting from the starting point reach the destination, in the present invention, the interconnected horizontal steel pipes are Since the burial of the horizontal steel pipe is completed upon reaching the destination itself, it has the advantage of reducing the risk of disturbing the surrounding soil of the horizontal steel pipe during construction.

The connection means 563, such as a connector pipe or a connection box, is a component used when pipes in different directions, such as the transverse direction and the longitudinal direction, or the longitudinal direction and the vertical direction, and the transverse direction and the vertical direction, are interconnected.

It is preferable to use a horizontal steel pipe 560 that has corrosion resistance, such as a galvanized steel pipe. If necessary, synthetic resin-coated steel pipe or stainless steel pipe may be used. Galvanized steel pipes are sufficient as long as they are used for protecting electric wires, water pipes, or gas pipes.

As shown in Figures 5 and 6C, when one horizontal steel pipe 560 is buried by horizontal drilling, another horizontal steel pipe 560 is installed in the horizontal burial device 500 and the previously buried horizontal steel pipe is buried. Horizontal drilling and burial work is performed by connecting (560) and the additional horizontal steel pipe 560, and the end of the horizontal steel pipe where the additional installation and connection of the horizontal steel pipe 560, horizontal drilling, and horizontal steel pipe burial is buried is carried out on the electric pole. This continues until the side pit 210 is reached. The horizontal steel pipes 560 may have a structure in which they are connected to each other through a socket, and the connection portion may have a mutual screw connection structure or a simple fitting structure.

If a central line cable or synthetic resin pipe is placed inside the protective steel pipe, damage or crushing is prevented even under impact or load, and the soil around the horizontal hole excavated during burial construction has a structure that is in close contact with the steel pipe, so it is not affected by the surrounding soil. Collapse is also effectively prevented.

In addition, by shallowing the burial depth of the trunk protection steel pipe, which is strong even under shock or load, the risk of damaging existing water pipes or gas pipes is reduced, which also helps reduce overall construction costs.

100: User communication manhole 200: Inlet pole
210: Jeonju side pit 300: National line
310: Business operator’s public line inlet pipe 400: Boundary stone
410: Lower pit of boundary stone 500: Horizontal burial device
510: tip bit 560: horizontal steel pipes
561: Horizontal steel pipe in transverse direction 562: Horizontal steel pipe in longitudinal direction
563: Connection means 564: Standing tube
600: Synthetic resin pipe

Claims (3)

In the method of burying the overhead cable trunk protection steel pipe,
① A non-dig horizontal burial device (500) in which steel pipes are buried in the communication manhole 100 by installing only steel pipes that are not longer than the horizontal steel pipe burial direction length of the communication manhole 100 and on which the tip bit is mounted on the side of the steel pipe burial direction. is installed, and a horizontal steel pipe (560) shorter than the horizontal steel pipe burial direction length of the communication manhole (100) is installed in the non-dig horizontal direction burial device (500) in the direction in which the horizontal steel pipes are buried, wherein the horizontal steel pipe (560) ) A process of attaching a tip bit 510 to the tip of the tip to block the inflow of soil and sand into the horizontal steel pipe 560 during construction,
② A process of burying the horizontal steel pipe 560 without excavation by horizontally drilling the buried connecting rod consisting of the horizontal steel pipe 560 and the tip bit 510,
③ Another horizontal steel pipe 560 whose length is shorter than the length in the horizontal steel pipe burial direction of the communication manhole 100 is additionally installed in the horizontal buried device 500, but the already installed horizontal steel pipe 560 and the socket are installed. A process of interconnecting by, screwing the connection parts together, or interconnecting by fitting,
④ A process of horizontally drilling the buried connecting rod composed of the tip bit 510 and a plurality of horizontal steel pipes 560 so that a plurality of horizontal steel pipes 560 are buried, and
⑤ A non-dig horizontal burial method of an overhead cable trunk protection steel pipe, characterized in that it includes a process of removing the tip bit (510) when the buried horizontal steel pipe reaches the pole side pit (210).
According to paragraph 1,
⑥ A non-dig horizontal burial method of an overhead cable trunk protection steel pipe, characterized in that it further includes a process of connecting the vertical pipe 564 and the horizontal steel pipe 560 with the connecting means 564 in the electric pole side pit 210. .
According to paragraph 1,
⑦ A non-dig horizontal burial method of an overhead cable trunk protection steel pipe, characterized in that it further includes a process of placing a synthetic resin pipe within the buried protection steel pipe.