KR100586798B1 - Welding waterstops and waterproofing sheet for cable tunnel - Google Patents

Abstract

The present invention relates to a heat-sealing index plate for communication tools, and in the related art, after connecting the connecting index plate to each embedded index plate embedded at the end of each concrete block with the ends of the concrete blocks facing each other, the joint portion of each index plate is connected. Melting with a hot air blower has been fusion spliced by hand, but this conventional method has a number of disadvantages, such as slow work speed, construction quality varies depending on the skill of the operator.

The present invention by installing the heating wire 20 to the buried index plate 12 is embedded in the concrete block and by fusion-bonding the connecting index plate 16 by the heat generated by the power supply, to work using the existing hot air blower Compared to this, it enables quick and convenient work and obtains uniform quality regardless of the skill of the operator.

Description

Heat-sealing index plate for communication equipment {WELDING WATERSTOPS AND WATERPROOFING SHEET FOR CABLE TUNNEL}

1 is a perspective view showing the assembly structure of the concrete block during the tunnel construction,

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 for showing a structure for installing a water plate in a tunnel; FIG.

3 is a perspective view showing a heat fusion index plate according to the present invention,

4a to 4c are cross-sectional views showing a process using a heat-sealing index plate according to the present invention.

<Description of the symbols for the main parts of the drawings>

10; Concrete blocks 11; Recess

12; Purchase index 15; Fusion member

16; Connecting index plate 20; Electrical resistance wire

30; Filling

The present invention relates to an index plate for waterproofing between concrete blocks when constructing a communication zone using a precast concrete segment block, and more particularly, to be able to work quickly and conveniently during waterproofing of joints using an index plate. The present invention relates to a heat-sealing index plate for communication equipment that can maintain excellent quality after construction.

In the case of installing a communication port, an electric power outlet, a water supply and sewage pipe in an underground space, the construction method of the tunnel is a method of constructing a concrete sphere using blasting or excavating the ground.

Tunnel construction method using precast concrete segment block produces precast concrete segment block (hereinafter referred to as concrete block) in a factory with facilities, transports it to the construction site, and then performs assembly work on site using a crane. This is to create a space where cables can be installed underground.

This method can achieve the safety, constructability and standardization of tunnels, and has the advantage of improving the working environment at the construction site, which is suitable for construction in complex urban areas, and its use is gradually increasing.

1 shows an assembly structure of a concrete block used in the tunnel construction.

Here, the concrete block (1) is fastened both sides with a connection medium, such as bolts in a state in which the open surfaces are in contact with each other. To this end, a groove into which the connection medium can be inserted, that is, a bolt pocket 2, is installed at each corner of the end of the concrete block 1, and then the bolt 3 is inserted therein and then fixed with a nut 4.

On the other hand, when the buried tunnel is used for the purpose of communication or power, etc., a plurality of coaxial cables and optical cables are installed therein and various auxiliary devices for controlling and managing them are installed. Therefore, it is important to protect the inside of the tunnel from the infiltration of groundwater. In the tunnel construction method using the precast concrete segment block, the index plate is used to block the inflow of groundwater through the joints to which the concrete block is connected.

FIG. 2 shows the structure of the index plate installation in the tunnel. The recess 5 is formed between the both ends of the concrete block and the edge of the inner circumferential surface thereof, and the index plate 6 is embedded therein. 6) in the state facing each other connecting the connecting index plate (7) to block the connection between the concrete block (1). After doing this, the filler 8 is injected to seal the recess 5.

At this time, the bonding index plate 6 and the connecting index plate 7 is bonded using a method by thermal fusion. That is, in the related art, hot air is applied to the buried index plate 6 and the connecting index plate 7 by using a hot air blower to melt the surfaces of the two materials, and then press and hold them with a finger or a palm.

However, such a conventional work method has a disadvantage in that the construction quality is not only very slow, but also the construction quality varies depending on the skill of the operator, while melting the bonding portion of each index plate by hot air while melting the bonding portion of each index plate by hand. In addition, there was a problem that causes deformation or pain of the finger during long hours of work.

The present invention is to solve the conventional problems as described above, an object of the present invention is to provide a heat generating means to the water plate to enable the water plate to be fusion-bonded by using it to facilitate the waterproof operation of the connection portion conveniently and quickly To maintain a uniform construction quality.

The present invention for achieving the above object, the buried index plate is installed along each end of the concrete block facing each other, the fusion member attached along the outer circumferential surface of the buried index plate and the heat generation provided between the buried index plate and the fusion member By means of fusion joining to the buried index plates on both sides through the fusion member that is melted by the heat generating means, characterized in that consisting of a connecting index plate for blocking the connection portion of the concrete block.

According to a preferred embodiment of the present invention, the heat generating means may be composed of a nichrome electrical resistance wire and a power supply device for supplying power.

According to the present invention, after connecting the connecting index plate to the buried index plate in the state in which both ends of the concrete block facing each other, by melting the fusion member through the heat generating means to fusion bonding the connecting index plate to the embedded index plate. Therefore, the construction is faster and simpler than the method using the conventional hot air blower, and uniform construction quality can be obtained regardless of the skill of the operator.

Such a characteristic configuration of the present invention and its effects will be more apparent through the detailed description of the embodiments with reference to the accompanying drawings.

Figure 3 shows the configuration of the present invention for blocking the inflow of groundwater through the connection between the concrete blocks, the buried index plate 12 is installed buried along the end of the concrete block 10, the buried index plate 12 The heat generating means installed on the outer circumferential surface of the buried index plate 12 is attached to the inner periphery of the fusion member 15 and melted by the heat generating means, and is joined to the fusion member 15 and fixed to the buried index plate 12 on both sides, It consists of a connecting index plate 16 to block the connection portion of the concrete block (10).

Here, the heat generating means is composed of a nichrome electrical resistance wire 20 installed along the outer circumferential surface of the buried index plate 12 and a power supply device (not shown) for supplying power to the electrical resistance wire 20. 20 is fixed to the buried index plate 12 by a tape made of the same material as the fusion member (14).

The buried index plate 12 is composed of a close contact portion 13 in close contact with the concrete surface and a fixed portion 14 embedded in the concrete, the recess 11 formed between the end of the concrete block 10 and the inner peripheral surface edge thereof It is installed in.

The connection index plate 16 is formed of a constant area and length, and both edge portions of the connection index plate 16 are connected to the close contact portion 13 of the embedded index plate 12 and then embedded through the fusion member 15 that is melted by the resistance line 20. 12) to be fusion bonded. In this case, the operation of bonding the connecting index plate 16 to the embedded index plate 12 may use a roller or the like.

Figures 4a to 4c shows the waterproofing process of the connection portion using the heat-sealing index plate according to the present invention.

In FIG. 4A, the concrete blocks 10 are installed so that their ends contact each other, and after connecting the connecting index plates 16 to the respective embedding index plates 12 in FIG. 4B, the electric resistance wire (see FIG. 3) is supplied with heat to heat Weld together by fusion. As such, by blocking the gap between the concrete blocks 10 from the inside of the tunnel, groundwater can be prevented from flowing into the tunnel through the connection portion.

Then, as shown in FIG. 4C, the filler 30 such as non-contraction mortar is injected into the space formed by the concave portions 11 facing each other. Thus, by finishing the work through the filler 30 it is possible to prevent the deterioration of the connection index plate 17, it is possible to remove the step between the concrete blocks inevitably generated by the manufacturing error.

By this repetitive work, a plurality of concrete blocks are continuously connected and installed to construct a tunnel.

As described above, in the present invention, since the hot wire is installed on the index plate and the connection index plate is fusion-bonded by the heat generated therein, the present invention can work at a faster speed than the conventional hot air fan, and is uniform regardless of the skill of the operator. Quality can be obtained.

Therefore, it is possible to obtain the effect of improving the workability by the simple waterproof construction, it is possible to ensure excellent waterproof performance for the connection between the concrete blocks to prevent damage to the facility by water leakage and improve the life of the facility.

Claims (2)

As to block the inflow of groundwater through the connection between the concrete blocks forming the tunnel, A buried index plate 12 which is installed buried along both ends of the concrete block 10 facing each other, A fusion member 15 attached along the outer circumferential surface of the embedding index plate 12 and heating means installed between the embedding index plate 12 and the fusion member 15; It is characterized by consisting of a connecting index plate 16 to block the connection portion of the concrete block 10 by fusion-bonded to the buried index plate 12 on both sides through the fusion member (15) melted by the heat generating means. Thermal welding index plate for communication equipment. The heat-sealing index plate for communication equipment according to claim 1, wherein the heat generating means comprises a nichrome electric resistance wire (20) and a power supply device for supplying power to the electric resistance wire (20).

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