KR102248587B1 - Underground power cable tunnels and the construction method thereof - Google Patents

Abstract

The present invention presents an underground electric power outlet and a construction method thereof, in which, when configuring an underground power sphere constructed by continuously combining a hollow box-type precast culvert in one direction during the construction process at the construction site, a joint groove for supporting a water stop member inserted between a joint surface of the precast culverts connected to each other by filling mortar is formed, a steel plate fastening groove is formed on both sides of the inner wall of the joint groove, and a steel plate is inserted and fixed in the steel plate fastening groove so as to be filled in the joint surfaces of the precast culverts that are connected to each other, so that the mortar for fixing the joints between the precast culverts into which the water stop member is inserted is prevented from being separated from the inner wall of the joint groove formed on the joint surface of the precast culvert due to uneven settlement or the like, thereby having a structure that effectively improves the watertightness of underground electric power outlets buried underground.

Description

Underground power cable tunnels and the construction method thereof

The present invention relates to an underground power tool and a construction method thereof, and more particularly, in constructing an underground power tool that is constructed by continuously and combining a hollow box-type precast culvert in one direction during the construction process at a construction site, they are connected to each other. A joint groove is formed on the joint surface of the precast culvert to support the water stop member inserted between the joint surfaces by mortar filling, and steel plate fastening grooves are formed on both sides of the inner wall of the joint groove, and the steel plate is in the steel plate fastening groove. A mortar is formed on the joint surface of the precast culvert by inserting and fixing it and filling the joint surface of the precast culvert that is connected to each other to fix the joint between the precast culverts in which the waterstop member is inserted. It relates to an underground power tool and a construction method thereof, characterized in that the watertightness of an underground power tool buried in the ground is effectively improved by preventing separation from the inner wall of the groove.

In complex areas such as urban centers and residential areas, underground burial of power and communication lines such as communication cables and electric cables is mainly used to avoid interference with various buildings and urban structures existing on the ground and to maintain a clean urban environment. I am connecting through.

At this time, in order to connect such cable lines through underground burial, underground power cable tunnels mainly made of concrete structures are buried in the ground and are used as passages for cable lines.

The underground power outlet provides a passage for cable lines buried in the ground, and plays a role of safeguarding the cables received inside from the external environment.In particular, due to the nature of the power outlet where power cables are accommodated inside, it has a hermetic waterproof structure. Is a very important factor.

In addition, conventionally, in constructing such an underground power tool, it was common to form the power tool by pouring concrete directly at the site to harden it, but this method of placing on the site lengthens the construction period and increases the construction cost. And, due to many problems such as traffic inconvenience, noise, and dust that occur as the construction period becomes longer, in recent years, a power unit unit (i.e., box-type PC) precast in a factory for shortening construction time and economical construction. Construction method of connecting and joining culverts) in the field is mainly used.

However, in the case of a construction method that connects and bonds precast units of the electric power unit in the field, the firm coupling of the bonding surfaces between the unit units of the electric power unit to be connected to each other maintains the integrity of the entire underground electric power unit. It acts as a very important factor in the process, and in the event of an external event such as an earthquake or differential settlement, it maintains the bonding of the bonding part of the bonding surface and prevents leakage between the inside and outside of the power outlet through cracks in the bonding surface, etc. It is very important.

For example, in Korean Patent Laid-Open Publication No. 10-2016-0017961, in a power tool manhole made of a plurality of box culverts manufactured by the precast method described above and assembled and installed at a construction site, the junction of box culverts that are mutually bonded By inserting a closed laminated index plate consisting of a rim having a corrugated hollow part between the sides and a plate-shaped part extending from both sides and finishing it with a grout material, the grout material filled and hardened due to external events such as earthquake or differential settlement Even when cracks occur, a structure that suppresses the inflow of groundwater into the power outlet through the joint surface is introduced by the closed-laminated water plate integrally fixed inside the grout material.

By the way, as in the patent 17961 mentioned above, when a waste laminated water plate is inserted between the joint surfaces of the box culverts to be bonded to each other and filled with a grout material to connect neighboring box culverts to each other, the mortar, which is commonly used as a grout material, is used as a box. As it has a strength similar to or higher than that of the concrete forming the culvert body, it shows relatively excellent properties in preventing cracks in the joints when an external event such as an earthquake or differential settlement occurs, but is formed on the joint surface in the field construction process. The adhesive force between the grout material filled and hardened in the joint groove and the concrete box culvert body constituting the inner wall of the joint groove shows a relatively weak bonding force, so that the neighboring culverts open to each other outward due to external events such as earthquake or differential settlement. In this case, the grout material filled in the junction groove of one side of the box culvert is separated from the inner wall of the junction groove and pulled toward the other side of the box culvert and separated from the inner wall, so that groundwater, etc., through the gap formed between the grout material and the inner wall of the junction groove, is inside the power outlet. There is a problem that it can be introduced into, and this is an important problem that must be solved, especially in an underground power district in which a power cable, which is a facility vulnerable to flooding, is accommodated.

1. Republic of Korea Patent Publication No. 10-2016-0017961 (published date: 2016.02.17.) "Power-gut manhole"

The present invention is to solve the problems according to the prior art described above, in the present invention, in the underground power sphere formed by continuously and combining a hollow box-type precast culvert through field construction, the bonding of the precast culverts connected to each other A joint groove is formed on the surface by filling the mortar to support the water-stop member inserted between the joint surfaces, and a steel plate fastening groove is formed on both sides of the inner wall of the bonding groove, and a steel plate is inserted and fixed in the steel plate fastening groove. , A mortar that is filled in the joint groove formed on the joint surface of the precast culvert that is connected to each other, and fixes the joint between the precast culvert into which the waterstop member is inserted, is formed on the joint surface of the precast culvert for reasons such as differential settlement. The purpose of this is to effectively improve the watertightness of an underground power tool that is buried in the ground and accommodates various power facilities by preventing separation and separation from the inner wall through the load resistance of the steel sheet.

In the present invention as a technical idea for achieving the above object, in the underground power sphere formed through a continuous combination of a plurality of hollow box-type culvert blocks pre-fabricated in a precast type, both ends of the box body constituting the culvert block , A joint groove is formed along the central part of the body rim, into which the water-stop member is inserted and coupled, and between the culvert blocks that are connected to each other, a closed index material into which both ends of the body are inserted into the joint groove of the two culvert blocks are interposed. The joint groove of the two culvert blocks to be connected is filled with mortar and hardened to form an underground power outlet by continuously fastening a plurality of culvert blocks adjacent to each other, but the closed resin is a new construction formed in a closed form by forming a hollow part. Consisting of a deformed portion and a water stop plate extending to both sides of the elastic deformed portion, and a pair of steel plate fastening grooves formed at opposite positions is formed on the inner wall of the joint groove formed in the culvert block, and two culverts connected to each other In a state in which steel plates are respectively inserted and fixed in the pair of steel plate fastening grooves formed in the joining grooves of the block, the waterstop plates on both sides formed in the closed index material are inserted into the joint grooves of the two culvert blocks that are connected to each other, and the closed index Provides an underground power tool in which two culvert blocks connected with each other are bonded with ash interposed therebetween, and an underground power tool in which the joint between adjacent culvert blocks is fastened through mortar filled in the joint groove of the two culvert blocks connected to each other, and its construction method. .

In the underground power tool and its construction method according to the present invention, in the construction process of the underground power tool, a bonding groove for supporting the water stop member inserted between the bonding surfaces by filling mortar on the bonding surfaces of the precast culverts connected to each other is provided. However, by forming a steel plate fastening groove on both sides of the inner wall of the bonding groove, inserting and fixing a steel plate in the steel plate fastening groove, and filling the bonding surface of the precast culvert connected to each other through the load resistance of the inserted steel plate. By effectively preventing the mortar that fixes the joint portion before and after the steel plate from being separated from the inner wall of the joint groove formed on the joint surface of the precast culvert for reasons of differential settlement, etc., underground facilities that are vulnerable to flooding such as power cables are accommodated. There is an effect that can dramatically improve the watertightness of the power tool.

1 is a diagram schematically showing a connection relationship of a junction of an underground power tool according to an embodiment of the present invention.
2 is a view for explaining a schematic shape of a waste composite material inserted into a junction of an underground power tool according to an embodiment of the present invention.
3 is a partial cross-sectional view showing a cross section of a junction of an underground power tool constructed according to an embodiment of the present invention.
4 is a partial cross-sectional view showing a cross section of a junction of an underground power tool constructed according to another embodiment of the present invention.
5 is a view showing a shape in which a steel plate is inserted and fixed in a joint groove formed in a joint portion of an underground power tool according to an embodiment of the present invention.
6 is a view showing, by way of example, various shapes of a steel plate inserted and fixed into a joint groove formed in a joint portion of an underground power tool according to the present invention.
7 is a view showing various examples of the closed index plate inserted into the junction of the underground power tool according to the present invention.

In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in detail in the text.

However, this is not intended to limit the present invention to a specific form disclosed, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features or It is to be understood that the presence or addition of numbers, steps, actions, components, parts, or combinations thereof does not preclude the possibility of preliminary exclusion.

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

1 is a diagram schematically showing a connection relationship of a junction of an underground power tool according to an embodiment of the present invention.

As shown in Figure 1, the underground power tool according to the present invention is formed through a continuous combination of a plurality of hollow box-shaped culvert blocks 100 pre-fabricated in a precast type, at this time, constituting the culvert block 100 At both ends of the box body, joint grooves 110 into which the water stop member is inserted and coupled along the central portion of the body rim are formed, and between the culvert blocks 100 connected to each other, the joint grooves 110 of the two culvert blocks are connected. A waste composite material 200 into which both ends of the body are inserted are interposed, and a plurality of culvert blocks 100 adjacent to each other are continuously combined to form an underground power tool by filling and hardening the joint groove 110 with mortar. do.

2 is a view for explaining the schematic shape of the waste composite material inserted into the junction of the underground power tool in the present invention, Figure 2 (a) shows the overall shape of the waste composite material, and Figure 2 (b) is It is a view showing a cross section along the line (A-A') of the waste composite material shown in Figure 2 (a).

The waste composite material 200 applied to the present invention is made of a material having elasticity, such as PVC to which a softener is applied, and forms a hollow part 240 and is closed as shown in FIG. 2(b). Consisting of an expansion/deformation part 210 made of and a water stop plate 220 extending to both sides of the expansion/contraction part 210, as shown in FIG. 2(a), the joint surface of the two culvert blocks that are connected to each other It is formed in a ring shape corresponding to the cross-sectional shape of the culvert block so that the water stop plate 220 is inserted into each of the bonding grooves 110 formed in each.

At this time, the waterstop plate 220 extending to both sides of the elastic deformation part 210 has a plurality of support protrusions 230 for strengthening the bonding force with the mortar filled in the joint groove and preventing the separation of the waste composite material and the mortar. ) Is formed, and the hollow part 240 formed in the stretchable deformable part 210 may be formed in various shapes such as an ellipse or a polygon, which will be described in more detail with reference to FIGS. 3 and 6 to be described later. .

3 is a partial cross-sectional view showing a cross section of a junction of an underground power tool constructed according to an embodiment of the present invention.

As already described above, in the underground power tool according to the present invention, the waste composite material 200 is inserted between the two culvert blocks 100a and 100b connected to each other, and the waterstop plate 220 of the waste composite material 200 is inserted, respectively. Through the process of filling the joint groove 110 of the culvert block (100a, 100b) with mortar (400), and connecting the two culvert blocks to each other, a precast type culvert block is continuously used at the construction site. It is constructed through a construction method that is connected with

At this time, in inserting and fastening the waste composite material 200 between the two culvert blocks 100a and 100b, the waste composite material 200 is fastened by first filling the mortar 400 to one side of the culvert block 100a in advance. After that, at the construction site, one side of the culvert block (100a) to which the waste composite material 200 is pre-fastened is bonded to the other side of the culvert block (100b) to which the waste composite material 200 is not fastened. , By filling and solidifying the mortar 400 in the joint groove 110 of the culvert block 100b to be joined, the precast box-shaped culvert block 100 is continuously connected and bonded to lead to a long tubular power It is common to form a sphere.

Here, in the present invention, prior to inserting and fastening the water stop plate 220 of the waste composite material 200 into the joint groove 110 of the culvert block 100, a steel plate for preventing the mortar from leaving the joint groove 110 ( A process of inserting and fixing 300) is added, and for this purpose, in the inner wall of the joint groove 110 of the culvert block 100 pre-fabricated in a precast type according to the present invention, the steel plate fastening groove to which the steel plate is inserted and fixed ( 120) is provided.

That is, on the inner wall of the bonding groove 110 of the precast culvert 100 prepared according to the present invention, as shown in FIG. 3, a pair of steel plate fastening grooves 120 formed at opposite positions is formed. Is, by forcibly pushing the steel plate 300 made of a steel material having its own elasticity from the entrance of the joining groove 110, so that both ends of the steel plate 300 fit into the pair of steel plate fastening grooves 120, The steel plate 300 is fitted and fixed in the steel plate fastening groove 120 formed on the inner wall of the bonding groove 110 by its elasticity.

After the steel plate 300 is fastened to the inner wall of the joint groove 110 of the culvert block 100 in this way, as described above, the waterstop plate of the waste material 200 in the joint groove 110 of the culvert block 100 ( 220) is inserted and the mortar 400 is filled in the joint groove 110 to complete the fastening of the culvert block 100 and the waste composite material 200, and at this time, both sides of the waste composite material 200 The support protrusions 230 formed in 220 reinforce the bonding force between the waste composite material 200 and the mortar filled in the joint groove, thereby suppressing the separation and separation of the waste composite material and the mortar.

The other side culvert block and the waste composite material are fastened through the same process, and in the present invention through this process, as shown in FIG. 3, two culvert blocks 100a, 100b in which the waste composite material 200 is inserted In a state in which the steel plate 300 is inserted and fastened into the joint groove 110 of each, the joint portion is fixed by filling the mortar 400 with the waste composite material 200 interposed between the joint surfaces of the two culvert blocks. It is done.

Accordingly, in the underground power tool according to the present invention having a fastening structure between culvert blocks of the above-described method, the strength against cracks is relatively excellent, but the adhesion to the concrete constituting the culvert box is relatively weak. By effectively compensating for the shortcomings, even if neighboring culverts open outward from each other due to an external event such as an earthquake or differential settlement, it is inserted into the inner wall of the joint groove and fastened through the mortar filled in the joint groove and a hardened steel plate. By preventing the separation of the mortar filled in the bonding groove, it is possible to fundamentally block the situation in which groundwater, etc., flows into the power outlet through the gap formed between the mortar and the inner wall of the bonding groove due to separation and separation of the mortar.

At this time, so that the mortar can be densely filled around the steel plate 300 inside the bonding groove 110, the steel plates 300 inserted into the bonding groove 110 in the present invention are spaced apart from each other and inserted, It consists of a plurality of steel plates that are fixed, and will be described in more detail with reference to FIG. 5 to be described later.

In addition, in the present invention, of the two culvert blocks 100a and 100b connected to each other, the two culvert blocks ( It is configured to complement the watertightness between the bonding surfaces of 100a and 100b).

Through this configuration, in the present invention, a waste composite material that is inserted into a junction surface between two culvert blocks that are connected to each other to prevent the inflow of running water, and a waste composite material that fixes the waste composite material and couples and fastens two neighboring culvert blocks. In the joint structure of the mortar joint, power cables, etc., by effectively preventing the inflow of running water due to the separation and separation of mortar cracks or culvert block joint surfaces and the filled mortar, which can be caused by external events such as earthquakes or differential settlement. It can dramatically improve the watertightness of underground power ducts, where facilities that are vulnerable to flooding are mainly accommodated.

4 is a partial cross-sectional view showing a cross section of a junction of an underground power tool constructed according to another embodiment of the present invention.

In FIG. 3 above, joint grooves are formed on the joint surfaces of the two culvert blocks 100a and 100b that are connected to each other, so that both water stop plates 220 formed on the waste composite material 200 are respectively culvert blocks 100a and 100b. A structure for fastening the two culvert blocks through mortar filling by inserting into the junction groove 110 formed in) is described, but the underground power tool according to the present invention is not necessarily limited to the structure of FIG. 3 described above.

That is, as shown in Figure 4, one side of the joint surface of the culvert block is integrally provided with a waste composite material 200 in a form in which one waterstop plate is inserted into the joint surface, and the other side joint surface in the case of FIG. 3 By configuring the joint groove as in, the joint surface of the culvert block 100d in which the waste composite material 200 is integrally provided, and the joint surface of the other culvert block 100c in which the joint groove 110 is formed are mutually joined, It may be configured to be fastened, and even in this case, the configuration of the insertion of the steel plate 300, the fixing structure, the mortar filling, and the water expansion index material 130 formed on the edge of the joint surface are applied in the same manner as in the case of FIG. 3 above. Therefore, a detailed description thereof will be omitted.

5 is a view showing a shape in which a steel plate is inserted and fixed in a joint groove formed in a joint portion of an underground power tool according to an embodiment of the present invention.

As already briefly described above, in the present invention, in configuring the steel plate 300 inserted and fixed to the inner wall of the joining groove 110, the front of the steel plate 300 inserted and fixed inside the joining groove 110, In order that the mortar can be densely filled in the rear space, as shown in FIG. 5, a plurality of steel plates 300 are spaced apart from each other at a predetermined interval along the joint groove 110 configured in a ring shape, as shown in FIG. 5. ) It is configured to be fastened and fixed to each of the steel plate fastening grooves formed on the inner wall.

In addition, in addition, although not separately shown in the drawings, by inserting a straight steel plate having a plurality of through holes formed at regular intervals along the four corners of the joint groove 110 configured in a ring shape, respectively, the inner wall of the joint groove 110 It may be configured to be fastened and fixed to the steel plate fastening groove formed in the.

In the present invention through such a configuration, after interposing the waste composite material 200 on the joint surface of the culvert block to be connected to each other, and then injecting mortar through a mortar injection groove (not shown) formed on one side of the culvert block Then, through a space between a plurality of steel plates 300 spaced apart from each other and fixed, or through a plurality of through holes formed in a straight steel plate, the injected mortar can be tightly filled in the inner space of the bonding groove 110, and As a result, the mortar filled in the joint groove and the steel plate inserted and fixed in the inner wall of the joint groove are integrally stiffened, and even if neighboring culverts are opened to the outside due to an external event such as an earthquake or differential settlement, the joint groove It is possible to effectively prevent the mortar filled inside from being separated from the inner wall of the joint groove.

At this time, in the drawings of the above-described embodiment, an example in which the steel plate inserted and fixed in the joint groove is formed in an arcuate shape, but the shape of the steel plate applied to the present invention is as shown in FIG. 6, an arcuate shape (a), It can be configured in various forms, such as bent (b) or straight (c), and preferably, when it is configured as an arched form curved inside the joint groove, or a bent form in a form bent inside the joint groove, it works. In addition to the relatively high resistance to load, there is an advantage in that it is relatively easy to perform the process of inserting and fixing into the joint groove through forced fitting.

In addition, in the above embodiments, only the case where the hollow portion formed in the elastic deformation portion provided in the waste composite material applied to the present invention is an elliptical is illustrated, but the shape of the hollow portion formed in the elastic deformation portion is shown in FIG. As shown, it may be formed in various shapes such as an oval (a), a square (b), or a stepped (c), and of course, it may also be formed in a corrugated shape (not shown) having a plurality of curves. .

As described above, the underground power tool according to the present invention forms a bonding groove for supporting the water stop member inserted between the bonding surfaces by filling mortar on the bonding surfaces of the precast culverts connected to each other, Steel plate fastening grooves are formed on both sides of the inner wall, and steel plates are inserted and fixed in the steel plate fastening grooves, and through the load resistance of the inserted steel plates, they are filled in the joint surfaces of the precast culverts to be connected to each other before and after the steel plate. By effectively preventing the mortar fixing the joint part from being separated from the inner wall of the joint groove formed on the joint surface of the precast culvert due to differential settlement, etc., it is mainly to strengthen the watertightness of the joint part of the culvert box constituting the underground power outlet. The watertightness and durability of underground power wards in which flood-prone facilities such as power cables are accommodated can be remarkably improved.

In addition, the above-described connection structure of the underground power outlet is applied equally to not only the power outlet in which the power cable is accommodated, but also to various types of hollows or culverts buried in the ground, and thus it will be utilized as a useful structure to enhance the watertightness of the underground pipeline. Of course you can.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and various substitutions, modifications and changes are possible within the scope of the technical spirit of the present invention. It would be obvious to those who have the knowledge of.

100, 100a, 100b, 100c, 100d: culvert block
110: joint groove 120: steel plate fastening groove
130: water expansion index material 200: waste composite material
210: expansion and contraction part 220: water stop plate
230: support protrusion 240: hollow part
300: steel plate 400: mortar

Claims (10)

In the underground power sphere formed through successive combination of a plurality of hollow box-type culvert blocks pre-fabricated in a precast type,
At both ends of the box body constituting the culvert block, joint grooves into which an index member is inserted and coupled along a central portion of the body rim are formed,
Between the culvert blocks that are connected to each other, a waste composite material in which both ends of the body are inserted into the joint grooves of the two culvert blocks are interposed,
By filling and hardening the joint groove of the two culvert blocks that are connected to each other, a plurality of culvert blocks adjacent to each other are continuously connected to form an underground power outlet,
The closed index material is composed of an elastic deformation portion formed in a closed form and forming a hollow portion and a water stop plate extending to both sides of the elastic deformation portion, respectively,
A pair of steel plate fastening grooves formed at positions opposite to each other are formed on the inner wall of the joining groove formed in the culvert block, and a plurality of steel plates are spaced apart from each other at regular intervals along the joining groove to be inserted and fixed into the steel plate fastening groove. Became,
In a state in which the steel plates are respectively inserted and fixed in the pair of steel plate fastening grooves formed in the joint grooves of the two culvert blocks connected to each other, the water stop plates on both sides formed in the waste composite material are inserted into the joint grooves of the two culvert blocks connected to each other. Underground, characterized in that the joint between adjacent culvert blocks is made through mortar filled in the joint groove of the two culvert blocks connected to each other in a state in which two culvert blocks are connected to each other with a waste composite material interposed therebetween. Electric power.
In the underground power sphere formed through successive combination of a plurality of hollow box-type culvert blocks pre-fabricated in a precast type,
At both ends of the box body constituting the culvert block, joint grooves into which an index member is inserted and coupled along a central portion of the body rim are formed,
Between the culvert blocks that are connected to each other, a waste composite material in which both ends of the body are inserted into the joint grooves of the two culvert blocks are interposed,
By filling and hardening the joint groove of the two culvert blocks that are connected to each other, a plurality of culvert blocks adjacent to each other are continuously connected to form an underground power outlet,
The closed index material is composed of an elastic deformation portion formed in a closed form and forming a hollow portion and a water stop plate extending to both sides of the elastic deformation portion, respectively,
On the inner wall of the joint groove formed in the culvert block, a pair of steel plate fastening grooves formed at positions opposite to each other are formed, and a straight steel plate having a plurality of through holes formed at regular intervals along the four corners of the joint groove is formed. It is inserted and fixed in the steel plate fastening groove,
In a state in which steel plates are respectively inserted and fixed in the pair of steel plate fastening grooves formed in the joint grooves of the two culvert blocks that are connected to each other, water stop plates on both sides of the waste composite material are inserted into the joint grooves of the two culvert blocks that are connected to each other. Underground, characterized in that the joint between adjacent culvert blocks is made through mortar filled in the joint groove of the two culvert blocks connected to each other in a state in which two culvert blocks are connected to each other with a waste composite material interposed therebetween. Electric power.
In the underground power sphere formed through successive combination of a plurality of hollow box-type culvert blocks pre-fabricated in a precast type,
At one end of the box body constituting the culvert block, a waste composite material is provided along the central part of the body rim and one end is integrally connected to the box body, and the other end of the waste composite material formed on the adjacent culvert block along the central part of the body rim is provided at one end of the box body. A joint groove to which the other end is inserted and coupled is formed,
A joint groove formed in the culvert block in a state in which the other end of the waste composite material provided in the one side culvert block connected to each other is inserted into the joint groove formed in the neighboring culvert block, and the two culvert blocks connected to each other are joined with the waste composite material interposed therebetween. Filling with mortar and solidifying it to form an underground power outlet by connecting a plurality of culvert blocks adjacent to each other in succession,
The closed index material provided integrally connected to the culvert block is composed of an expansion and contraction part formed in a closed form and forming a hollow part, and a water stop plate extending from the expansion and contraction part, and the inner wall of the joint groove faces each other. A pair of steel plate fastening grooves formed at a position are formed, and a plurality of steel plates are spaced apart from each other at regular intervals along the joint groove and inserted and fixed in the steel plate fastening groove,
In a state in which the steel plate is inserted and fixed in the pair of steel plate fastening grooves formed in the joining groove, the water stop plate formed on the waste composite material is inserted into the joint groove of the adjacent culvert block, and two connected to each other with the waste composite material interposed therebetween. Underground power tool, characterized in that in a state in which the culvert blocks are joined, the joint groove is filled with mortar to allow fastening between adjacent culvert blocks.
In the underground power sphere formed through successive combination of a plurality of hollow box-type culvert blocks pre-fabricated in a precast type,
At one end of the box body constituting the culvert block, a waste composite material is provided along the central part of the body rim and one end is integrally connected to the box body, and the other end of the waste composite material formed on the adjacent culvert block along the central part of the body rim is provided at one end of the box body. A joint groove to which the other end is inserted and coupled is formed,
A joint groove formed in the culvert block in a state in which the other end of the waste composite material provided in the one side culvert block connected to each other is inserted into the joint groove formed in the neighboring culvert block, and the two culvert blocks connected to each other are joined with the waste composite material interposed therebetween. Filling with mortar and solidifying it to form an underground power outlet by connecting a plurality of culvert blocks adjacent to each other in succession,
The closed index material provided integrally connected to the culvert block is composed of an expansion and contraction part formed in a closed form and forming a hollow part, and a water stop plate extending from the expansion and contraction part, and the inner wall of the joint groove faces each other. A pair of steel plate fastening grooves formed at the positions are formed, and a straight steel plate having a plurality of through holes formed at regular intervals along the four corners of the bonding groove is inserted and fixed into the steel plate fastening groove,
In a state in which the steel plate is inserted and fixed in the pair of steel plate fastening grooves formed in the joining groove, the water stop plate formed on the waste composite material is inserted into the joint groove of the adjacent culvert block, and two connected to each other with the waste composite material interposed therebetween. Underground power tool, characterized in that in a state in which the culvert blocks are joined, the joint groove is filled with mortar to allow fastening between adjacent culvert blocks.
The method according to any one of claims 1 to 4,
The waste composite material,
Underground power tool, characterized in that configured in a ring shape corresponding to the cross-sectional shape of the culvert block.
The method according to any one of claims 1 to 4,
An underground power tool, characterized in that a plurality of support protrusions are formed on the water stop plate.
The method according to any one of claims 1 to 4,
The hollow portion formed in the elastic deformation portion,
An underground power tool, characterized in that it is formed to have an oval, square, stepped or corrugated cross-section.
The method according to any one of claims 1 to 4,
The steel plate,
An underground power tool, characterized in that it is composed of an arch-shaped steel plate curved to the inside of the joining groove or a bent steel plate bent to the inside of the joining groove.
In the method of constructing an underground power tool by continuously fastening a plurality of hollow box-type culvert blocks pre-fabricated in a precast type,
At both ends of the box body constituting the culvert block, a joint groove is formed in which the waste composite material is inserted and coupled along the central portion of the body rim, and both ends of the body are connected to the joint grooves of the two culvert blocks connected to each other between the culvert blocks. Through the process of filling the joint groove of the culvert block with mortar through each inserted waste composite material, a plurality of culvert blocks adjacent to each other are successively connected to form an underground power outlet,
By forming a pair of steel plate fastening grooves at positions opposite to each other on the inner wall of the bonding groove formed in the culvert block, in the pair of steel plate fastening grooves formed in the bonding grooves of the two culvert blocks connected to each other, along the bonding groove In a state in which a plurality of steel plates spaced apart from each other are inserted and fixed, respectively, both ends of the waste composite material are inserted into the joint grooves of the two culvert blocks connected to each other, and two culvert blocks are connected to each other with the waste composite material interposed therebetween. In a state in which the culvert blocks are joined, a mortar is filled in the joint groove of the two culvert blocks connected to each other to perform fastening between adjacent culvert blocks.
In the method of constructing an underground power tool by continuously fastening a plurality of hollow box-type culvert blocks pre-fabricated in a precast type,
At both ends of the box body constituting the culvert block, a joint groove is formed in which the waste composite material is inserted and coupled along the central portion of the body rim, and both ends of the body are connected to the joint grooves of the two culvert blocks connected to each other between the culvert blocks. Through the process of filling the joint groove of the culvert block with mortar through each inserted waste composite material, a plurality of culvert blocks adjacent to each other are successively connected to form an underground power outlet,
The pair of steel plate fastening grooves formed in the bonding grooves of two culvert blocks connected to each other by forming a pair of steel plate fastening grooves at positions opposite to each other on the inner wall of the bonding groove formed in the culvert block, four of the bonding grooves In a state in which a straight steel plate having a plurality of through-holes formed at regular intervals along the edge is inserted and fixed, respectively, both ends of the waste composite material are inserted into the joint grooves of the two culvert blocks connected to each other, and the waste composite material is interposed therebetween. A method of constructing an underground power tool, characterized in that, in a state in which two culvert blocks connected to each other are joined together, the joint groove of the two culvert blocks connected to each other is filled with mortar to perform fastening between adjacent culvert blocks.

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