KR101203130B1 - A soundproof equipment fitted at the entrance of a tunnel - Google Patents

Abstract

PURPOSE: Soundproof equipment installed at a gate of a tunnel is provided to prevent the breakage or separation due to blast pressure by changing the opening degree of a door according to the magnitude of blast pressure. CONSTITUTION: Soundproof equipment installed at a gate of a tunnel comprises a grid-shaped barrier wall(10), a door(20), a support frame, and a guide roller(23). The barrier wall has a soundproof structure and closes the gate of a tunnel. The door moves laterally along the wall surface of the barrier wall to open and close an opening and pivots back and forth around the top. The support frame is coupled with the barrier wall at the side of the barrier wall facing the tunnel. The guide roller is installed at a horizontal rail(12) formed in an extended portion of the support frame and at the top of the door and guides the lateral and longitudinal movement of the door.

Description

A SOUNDPROOF EQUIPMENT FITTED AT THE ENTRANCE OF A TUNNEL}

The present invention relates to a soundproofing device used in tunnel construction, and more particularly, to minimize the blast noise and storm pressure generated during the blasting work for the tunnel excavation to the outside of the tunnel and to prevent scattering fragments. It relates to sound insulation installed at the entrance of the tunnel to shield the inside and outside of the tunnel.

A tunnel is a passage made through the base of a mountain, sea, river, etc., which is inevitably created on the topography of the transitional area by the standard (minimum radius diameter) of a road or railway line. Tunnel construction usually consists of excavation and perforation. Among them, the explosive work is generally performed using explosives for excavation.

The blasting work of the tunnel is a work of exploding continuously after inserting explosives into a number of charge holes drilled on the free surface of the tunnel. Blasting noise and storm pressure from the explosives can be released outside the open tunnel, and small blasts or crushed stone can also be released from the blast. These explosion noises, storm pressures and debris cause noise pollution and dust pollution around the construction site, which causes severe stress on nearby residents and livestock. In the case of storm pressure, high frequencies in the audible frequency range form sound waves, while lower frequencies in the lower range are inaudible to human ears, but inflict great damage to structures.

Therefore, even though the tunnel blasting method does not completely solve the problems caused by the excavation of the tunnel, various efforts have been made to reduce or minimize it. For example, the soundproof wall is formed by installing an iron plate soundproof wall or stacking sponge blocks in a tunnel which has been excavated to some extent. However, such a prior art steel plate soundproof wall is very difficult to install and low soundproofing effect is not only inefficient, but also requires a lot of effort and time because the dismantling and installation must be repeated to move the steel plate soundproof wall according to excavation by a certain section. It is pointed out that tunnel excavation air is considerably delayed. In addition, the same problem exists because the sponge block sound barrier must move inside the tunnel while repeating the work of stacking and dismantling a plurality of sponge blocks.

Therefore, a method of installing a soundproof door or soundproof device at the entrance of the tunnel rather than the inside of the tunnel has been introduced. For example, as shown in Figure 1, the Republic of Korea Utility Model Publication No. 0305672 by installing a soundproofing device consisting of a barrier wall 20 formed of a shotcrete layer and the like and a soundproof door 30 hinged to the barrier wall at the entrance of the tunnel It is disclosed that it is possible to absorb the blast noise, storm pressure, etc. generated during the blasting work in the tunnel.

However, according to this structure, the soundproofing device must withstand the storm pressure generated during the blasting, so that the weak connection portion of the soundproofing device may be broken or the soundproofing device may be separated from the tunnel entrance during repeated blasting operations. In addition, in the case of a hinged soundproof door, if a storm pressure is generated above the level at which the soundproof door can be moved, a problem of not opening the storm pressure and wide open occurs. In addition, the barrier wall, which constitutes a large part of the sound insulation device, is substantially made of concrete, which is not effective in absorbing noise or impact.

Republic of Korea Patent Publication No. 0939495 discloses a soundproofing device having a structure capable of extinguishing blast noise and storm pressure while partially improving the above-mentioned problems. As shown in FIG. 2, the soundproofing device basically includes a pair of blocking walls 110 and 210 spaced apart from each other, and a buffer part 410 is present between the blocking walls, and each barrier wall has an entrance door. (112, 212) is formed. The patent can mitigate the impact of the storm pressure on the blocking wall by absorbing the shock pressure generated during the blasting guide shaft, the elastic member and the like, and absorbs the shock of the storm pressure by the interior of the barrier wall Explain that noise can be prevented from being emitted to the outside.

This soundproofing device has been advanced in that it has a shock absorbing part capable of absorbing the storm pressure compared to the previous soundproofing device, but it is difficult to manufacture and install due to the complicated construction of two blocking walls. However, it is recognized that the assembly and disassembly work are difficult due to the integrated frame. In addition, even though the area occupied by the door in the barrier wall is not small, the soundproof structure of the door is not presented, and it is also difficult to provide a shock absorbing part. Moreover, since the door of the barrier wall receives the storm pressure as it is, there is a problem that the storm pressure and the noise are released to the outside of the tunnel at the same time as the door is flipped forward and backward by the storm pressure.

It is an object of the present invention to provide a soundproofing device which can absorb blast noise and storm pressure generated during tunnel blasting by itself, and minimize them from exiting the tunnel.

Another object of the present invention is to provide a soundproofing device having an entrance door which can alleviate while absorbing the storm pressure generated during the blasting operation and is easy to open and close.

Still another object of the present invention is to provide a soundproofing device that is easy to assemble, dismantle, transport, and store.

Still another object of the present invention is to provide a soundproofing device having a structure in which breakage by storm pressure can be prevented.

The present invention provides a sound insulation device for blocking or minimizing the leakage of noise, storm pressure, etc. generated during the blasting operation of the tunnel to the outside of the tunnel. In the terms "soundproofing device" or "soundproof structure" used throughout the specification, "soundproofing" does not mean to prevent only blasting noise generated during blasting work unless otherwise specified, but in addition to blasting noise, blasting such as storm pressure and crushed stone. It should be understood that the intention is to comprehensively prevent both tangible and intangible things that could be released out of the tunnel due to the work.

The soundproofing device basically includes a barrier wall and an entrance door connected to the barrier wall side. The barrier wall has a structure in which a sound absorbing member layer and a buffer member layer are disposed between the supports, and a space for entry and exit is formed. Preferably, the barrier wall is composed of a plurality of segments which can be assembled and disassembled with each other, preferably in the form of a flat rectangular parallelepiped, as described below. The door is positioned to shield the space of the barrier wall and has a structure in which a sound absorbing layer and / or a buffer layer are disposed between the supports. Preferably the door has a structure substantially the same as the barrier wall. The door is provided so as to move laterally along the wall surface of the barrier wall to open and close the space and move in the front-rear direction (where front and rear means outside and inside the tunnel) with the upper end as an axis.

In the practice of the invention, the tunnel side of the soundproofing device may be provided with a support frame that can be coupled to the soundproofing device (particularly, the blocking wall) to provide a more robust support to the soundproofing device. The frame is preferably a lattice shaped steel structure consisting of H beams. In this case, the structure including the iron structure may be understood as the soundproofing device of the present invention. The door may be connected to a rail formed on the extension of the frame or to a rail formed directly on the barrier wall.

In the soundproofing device of the present invention, preferably, the sound absorbing member layer is a sponge layer or a foam layer and the buffer member layer is a spring layer. Preferably, the sound absorbing member layer and / or the buffer member layer are provided to be distributed over the entire surface of the barrier wall and / or the door.

According to one aspect of the invention there is provided a soundproof device intended to be installed at the entrance of a tunnel. The soundproofing device includes a barrier wall formed to block a tunnel entrance and having an entrance opening in the center thereof, preferably a grid, and an opening and closing door configured to open and close the entrance opening of the barrier wall. The barrier wall is preferably formed by combining a plurality of segments to be described later. In this case the lattice shape of the barrier wall is formed by the joining site of the segments (or partitions).

The barrier wall and the opening and closing door preferably have a soundproof structure provided with a sound absorbing member layer and an elastic member layer between the support and the support. The soundproof structure may be provided with a network member layer, preferably a wire mesh, on the front surface of the sound absorbing member layer formed of a sponge or foam, and a nonwoven fabric layer on the back surface. As a result, the sound absorbing member layer may be firmly positioned between the supports.

On the back side of the elastic member layer, a protective member layer, such as a rubber plate covering it, may be provided to prevent damage from blasted crushed stone and to suppress noise generation. Preferably, the elastic member layer formed of a spring may have a plurality of springs uniformly disposed between the nonwoven fabric layer and the protective member layer. The plurality of springs may be springs of the type used in the bed. Between each layer may optionally be further provided with a nonwoven fabric layer or a reticular layer.

In the present invention, the support may be composed of a plurality of partitions that can be coupled and separated from each other, preferably provided with a plurality of fastening members for coupling to each other at the edge. Each partition, which is preferably an angle prefabricated structure, is provided as a sound insulation device, in particular a segment of the barrier wall, including the sound insulation structure described above. By combining each of the segments provided with the soundproof structure to each other, or by combining the partitions and stacking each element of the soundproof structure, the soundproofing device of the desired size can be assembled. On the contrary, by disassembling the segments, it is possible to drastically reduce the storage space for storage and transportation, and to recombine them to manufacture the soundproofing device for the tunnel.

According to another aspect of the present invention, there is provided a soundproofing device for tunnel construction having a blocking wall and an opening and closing door. The barrier wall is installed at the entrance of the tunnel, has an entrance opening in the center, and has a soundproof structure. The opening and closing door is formed to shield the entrance and exit opening of the blocking wall, and has a soundproof structure similar to the opening and closing door.

A horizontal rail exists above the access opening and a horizontal rail above the access opening so that the opening and closing door is opened and closed laterally through the front surface of the blocking wall and the lower side of the opening and closing door moves forward of the blocking wall. Means for moving along the rail are attached, and both sides and the lower side of the opening and closing door are not connected to the blocking wall.

It is preferable that the entrance opening and the opening and closing door are substantially the same in shape and area. Attached to the opening and closing door, the means for moving along the horizontal rail may for example be a guide roller. At least a portion of the edge of the opening and closing door may be provided with a rubber-like cushioning member to mitigate the impact with the blocking wall and / or floor or the impact between the opening and closing doors when the door is moved forward and backward or left and right. The opening and closing door may be formed with a lower side than the upper side so as not to move by a relatively small impact force.

The barrier wall and optionally the opening and closing door may be formed by coupling a plurality of segments having a soundproof structure to each other.

The present invention provides a structure that can absorb the blasting noise generated during the blasting work while relatively simple configuration of the soundproofing device, and can also absorb the storm pressure by itself, so that the blasting noise and the storm pressure are released outside the tunnel. Can be blocked or at least minimized.

In particular, even when a storm pressure is applied above the level that the sound absorber can absorb, the degree of opening and closing the door of the sound insulation device varies according to the magnitude of the storm pressure, so that the sound insulation is damaged by the storm pressure or separated from the tunnel entrance. At the same time, it can minimize the emission of noise and prevent safety accidents.

In addition, the sound insulation device of the present invention can be composed of a plurality of soundproof structure segments assembled with each other, so that the soundproofing device can be installed and dismantled very easily to a desired size, and the space for storage can be minimized.

1 is a view showing a soundproofing device according to the prior art installed at the entrance of a tunnel.
2 is a view showing another sound insulation device according to the prior art installed at the entrance of the tunnel.
3 is a front view of the soundproofing apparatus according to the first embodiment of the present invention.
Figure 4 is a right side view of the soundproofing device of Figure 3, the left side is a normal state and the right side is a state when a certain level of storm pressure is applied.
5 is a view showing the soundproof structure of the blocking wall and the door of the soundproofing device according to an embodiment of the present invention.
6 to 9 are views showing the structure of the soundproofing apparatus according to the second embodiment of the present invention in whole or in part, and only the structure of the support and the frame is omitted for the purpose of understanding the invention.

Hereinafter, according to an embodiment of the present invention, the present invention will be described in more detail with reference to the accompanying drawings. In order to facilitate a clear understanding of the present invention, some elements in each drawing may be exaggerated, omitted, or schematically illustrated. In addition, the size of each component does not entirely reflect the actual size. The following examples are intended to illustrate preferred embodiments of the present invention in order to enable those skilled in the art to understand and to facilitate the present invention, and should not be construed as limiting the present invention. Those skilled in the art will recognize that various changes and modifications can be made within the spirit and scope of the invention.

3 is a front view imaginary showing a state when the soundproofing device 1 according to an embodiment of the present invention is installed at a tunnel entrance, and FIG. 4 is a side view of the soundproofing device 1. 3 and 4 briefly show only the important appearance of each component in order to clearly show the coupling relationship between the components of the soundproofing device 1. Since the soundproofing device 1 is installed at the entrance of the tunnel, it may be designed to have a shape corresponding to the entrance of the tunnel as a whole. In general, the tunnel is excavated in an arcuate shape, so the soundproofing device 1 may also be made in an arcuate shape. However, if the soundproof device is not intended to be inserted into the tunnel entrance and is intended to block the tunnel entrance from the front side thereof, the soundproof device may not have a shape corresponding to the tunnel entrance, but may be formed as an overall rectangle (see the second embodiment). something to do.

The soundproofing device 1 basically includes a blocking wall 10 having a soundproof structure to be described later and an opening and closing door 20 installed on the blocking wall 10 and having substantially the same structure as the blocking wall 10. In the center of the blocking wall 10, there is preferably a rectangular opening 11 having a predetermined width and height vertically and horizontally so that construction vehicles or bulky materials can pass therethrough.

The opening / closing door 20 may substantially have the same width and width as the opening 11, while substantially shielding the opening 11 of the blocking wall 10 and for ease of pivoting. As shown in FIG. 4, the opening / closing door 20 is not installed on the same line as the sidewall of the blocking wall 10, but instead of overlapping with the blocking wall 10. It protrudes by the thickness and is installed. Optionally, the opening and closing door 20 may be designed to have a width slightly wider than the width of the opening, in which case the opening and closing door 20 does not enter the opening 11 during the pivoting movement of the opening and closing door 20.

Preferably, the opening / closing door 20 formed of two pieces 21 and 22 is slid in the direction of the block arrow in FIG. 3 and opened and slid in the opposite direction, and closed in FIG. 4. It should be noted that it is installed on the blocking wall 10 so that it can pivot back and forth through (11). To this end, a rail 12, preferably rod-shaped, is provided on the blocking wall 10 side in a horizontal direction slightly above the opening 11. A guide roller 23 is provided at the upper end of the opening / closing door 20 so that the opening / closing door 20 slides left and right along the rail 12, the rail 12 is wound, and the opening and closing door pivots back and forth. In FIG. 3, two pieces for each piece 21, 22 are shown, four in all, but this is merely illustrative, and a person skilled in the art will understand that the number of guide rollers 23 may be appropriately selected as required. .

The coupling relationship of the above structure between the opening and closing door 20 and the blocking wall 10 side provides a very advantageous effect compared to the prior art in which the side of the opening and closing door is hinged to the longitudinal structure of the blocking wall. According to the prior art, when a storm pressure is applied to the door more than the door can handle, the door is opened wide so that the storm pressure, storm noise, and crushed stone such as fly ash or dust are released out of the tunnel. In particular, this is more problematic if the storm pressure is not temporary but continuous, since after the opening and closing door is opened by the initial storm pressure, subsequent storm pressure and crushed stone are released to the outside through the opening without any obstacle.

However, in the present invention, the opening and closing door 20 is provided in such a way as to hang on the rail 12 placed in the horizontal direction and gravity acts on the opening and closing door 20, even if a large storm pressure is applied to the opening and closing door 20 20 is not wide open, as shown in the right view of FIG. 4, the upper portion of the opening and closing door 20 is only opened to the extent that the lower portion of the opening and closing door 20 is shaken to some extent while being fixed to the blocking wall 10 side. Open door 20 is immediately returned to its original upright state by its own weight. Even if the opening / closing door 20 is pivoted and opened to some extent, the upper part of the opening part 11 is almost closed, so that crushed stone or dust does not scatter out of the tunnel through the upper part of the opening part 11 and is safely guided toward the floor. Will be. In order to minimize the space in which the lower part of the opening and closing door 20 is opened by moving forward even at a greater storm pressure, the opening and closing door 20 is preferably designed so that the lower part is heavier than the upper part.

In the soundproofing device of the present invention, the opening and closing door 20 is a little difficult or cumbersome due to the weight of opening and closing every time for the entrance of the worker, etc., the auxiliary door for the entrance of the worker 30 to one side of the blocking wall (10) ) May be included.

Referring now to FIG. 5, FIG. 5 is a schematic cross-sectional view of a layered soundproof structure 50 of a soundproofing device in accordance with one embodiment of the present invention, and is a partial side cross-sectional view of the barrier wall 10. The opening and closing door 20 also preferably has a soundproof structure substantially the same as the blocking wall 10. The soundproof structure is a network member 52, the sound absorbing member 53, the nonwoven fabric 54, the elastic member 55 and the protective member 56 are sequentially stacked from the outside of the tunnel between the support (51, 51) Structure. Here, the mesh member 52, the nonwoven fabric 54 or the protective member 56 may be omitted or replaced by some other material, but the sound absorbing member 53 and the elastic member 55 is the soundproof structure of the present invention ( 50) must be provided. Optionally, the stacking order of the sound absorbing member 53 and the elastic member 55 may be reversed.

The supports 51 and 51 'are for securing the overall supporting force and structural force of the soundproof structure, and considering the overall weight thereof, an angle having a cross section is preferably an angle and the main surface thereof is located on the side of the soundproof structure. Both curved sides are located in front of and behind the soundproof structure (in this case, the support 51 and the support 51 'will be one piece). Therefore, since the front and rear surfaces of the supports 51 and 51 'are mostly empty spaces, the mesh member 52, which is preferably a wire mesh, is fixed to the front side of the support for protecting and positioning the sound absorbing member 53.

The sound absorbing member 53 is located on the back side of the reticular member 52. The sound absorbing member is preferably a sponge or foam in the form of a block, and more preferably a soundproof sponge. As a sound absorbing member, a wooden sound absorbing plate or a wood fiber sound absorbing plate can be used, but it can be easily damaged by storm pressure during repeated blasting operations. The sound absorbing member 53 is basically provided to absorb the blasting noise, but also has the properties of the elastic body can absorb some of the storm pressure. In order to minimize damage to the sound absorbing member, the rear surface of the sound absorbing member 53 is preferably covered with a nonwoven fabric 54.

On the back of the nonwoven fabric 54 is preferably an elastic member 55, which is a spring. The elastic member 52 is to absorb the storm pressure generated when blasting. The storm pressure is moderated to some extent by the sound absorbing member 56 described above, but is not sufficient. Therefore, the soundproof structure according to the present invention is able to absorb or buffer the storm pressure itself while the elastic member 55 is compressed in the direction of the arrow A. After the storm pressure in the tunnel is extinguished, the soundproof structure is restored to its original state by the elastic force of the elastic member 55.

Storm pressure applied to the soundproofing device of the present invention during blasting may act differently on the upper and lower sides, or left and right of the blocking wall 10 or the opening and closing door 20. Therefore, in preparation for a storm pressure that can be applied relatively large to a specific surface, it is preferable that the elastic member 55 is arranged to be uniformly and tightly distributed over the entire surface as if it is a spring of a bed. Although not theoretically limited, this type of spring structure is not compressed evenly throughout the spring structure when the storm pressure applied to the soundproofing device is uneven, but the spring corresponding to the portion where the greater storm pressure is applied is compressed more. This can more effectively absorb the storm pressure.

The back of the elastic member 55 is preferably also covered by a protective member 56, such as a rubber plate, for protection from relatively large scattered stones. At least part of the back surface of the protective member 56 is again covered by the support 51 '.

The soundproofing device (1) consisting of the barrier wall (10) having the soundproof structure (50) and the opening / closing door (20) according to the present invention is installed to seal the tunnel entrance, so that the blasting noise generated during the blasting work for the tunnel excavation is soundproofed. Absorbed by the sound absorbing member 53 of the structure 50, and the blasting storm pressure is absorbed and buffered by the sound absorbing member 53 and in particular the elastic member 56, thereby minimizing the emission of noise and storm pressure to the outside of the tunnel can do. Furthermore, when a certain level of storm pressure is applied to the soundproofing device 1, the door 20 may be slightly shaken to prevent the device from being damaged and additionally such as blasting noise due to the automatic closing structure of the door 20. External leakage can be prevented.

6 to 9 show the structure of the sound insulation device 600 according to another embodiment of the present invention. In order to more clearly understand the support structure in the barrier wall and the door, etc., the soundproof structure between the supports is omitted. 6 is a perspective view of the overall structure of the soundproofing device, FIG. 7 is an example of the opening and closing door 620, FIG. 8 is an example of the support 800 of the blocking wall 610, and FIG. 9 is an example of the auxiliary door 630. to be.

In this embodiment, the sound insulation device 600 is generally rectangular in shape when viewed from the outside of the tunnel, and includes a blocking wall 610 and an opening and closing door 620 for shielding an opening for access of the blocking wall. The blocking wall 610 is coupled so that its support 800 is as close to the frame 660 as possible. The frame 660 is preferably cut by H beam and attached in a lattice shape by a known method such as welding, bolt-nut (preferably bolt-nut coupling method for disassembly and reinstallation). By firmly fixing the frame 660 to the tunnel entrance (the lower end of the frame can be embedded in the ground), the soundproof device 600 blocks the tunnel entrance.

The opening and closing door 620, the upper side of which is connected to the blocking wall 610, slides left and right on a rail 662 coupled in a horizontal direction to the plurality of extension parts 661 protruding forward from the frame 660. To be able to pivot back and forth, it is connected to the rail 662 of the frame 660 through the guide roller 623. The edges of the opening and closing doors 621 and 621, preferably both end portions and the lower end portions, are covered with a rubber cushioning member 623 to reduce the impact of the adjacent structure or the floor when the opening and closing door is moved. In FIG. 7, the block arrows between the two opening and closing doors 621 and 622 are in the left and right slide directions of the opening and closing doors, and the block arrows shown at the opening and closing doors 622 are in the pivot direction toward the front and rear of the opening and closing doors. Those skilled in the art will understand the structure of the rail 662 and the structure and operation of the opening and closing door 620 connected thereto with reference to FIGS. 6 and 7.

An auxiliary door 630 is provided at a lower side of the soundproofing device 600, which is connected to the frame 660 so as to be opened and closed in a block arrow direction through, for example, a rotating bearing or a hinge (see FIG. 9). The auxiliary door 630 is also preferably provided with a soundproof structure between the supports. The sound insulation device 600 may also be provided with a vent 670 at a suitable position.

Referring to the support 800 of the blocking wall 610 with reference to Figure 8, the support 800 provided in the soundproof structure inside (or can also be understood as beetween) is located near both edges of the rim It consists of a plurality of partitions (810, 820, 830, 840) fixed to each other by coupling between the plurality of fastening members (811, 821, 831, 841) attached. Although only four partitions are shown in the drawing, it should be understood that the edges of the partitions are coupled to each other up and down to form the support 800 of the barrier wall.

The partition is preferably made into a rectangle by cutting, welding or bending a metal angle such as aluminum having a “[” shaped cross section. The dimensions of the partitions need not necessarily be the same, and may be formed of, for example, partitions of relatively small dimensions, such as partitions 810 and 820, and partitions of relatively large dimensions, such as partitions 830 and 840. When the size of the partition is large, it is preferable to add reinforcing members such as crossbars 832 and 842 to secure the positional stability of the soundproof structure to be provided therein.

According to the present invention, a soundproof structure made of a sound absorbing member, an elastic member, and the like is provided in the internal space of the partition thus formed, thus becoming a soundproof structure segment constituting the blocking wall 610. As shown in FIG. 8, the plurality of segments are connected to each other through screwing for coupling, disassembly, and recombination between the fastening members, thereby forming an overall barrier wall.

In the case of the opening and closing doors 621 and 622, the whole may be composed of a single part, or may be configured by combining several segments similar to the blocking wall 610. FIG. 7 illustrates a case in which the opening and closing doors 621 and 622 are each composed of a single component, and three pairs of cross bars 625 are provided on the support of the opening and closing door for fixing the position of the soundproof structure.

Although the invention has been described in terms of several representative embodiments, it should be understood that the invention has the right to be protected in all its scope.

1, 600: Soundproofing devices 10, 610: Barrier wall 11: Opening wall 12, 622: Rail 20, 620: Opening doors 21, 22, 621, 622: Left and right pieces 23, 623: Opening roller 30, 630: Auxiliary door 50: Soundproof structure 51, 800: Support 52: Reticular member 53: Sound absorbing member 54: Nonwoven fabric 55: Elastic member 56: Protective member 660: Frame 624: Shock absorbing member 625: Crossbar 661: Extension part of frame 670: Vent 810 , 820, 830, 840: Partitions 811, 821, 831, 841 of the support: Fastening members 832, 842: crossbars

Claims (14)

delete delete delete delete In the soundproofing device for tunnel construction,
A grating-type barrier wall having a soundproof structure and formed to block a tunnel entrance and having an entrance opening in a center thereof;
An opening / closing door having a soundproof structure, provided to move laterally along the wall surface of the blocking wall to open and close the access opening and to move in the front-rear direction based on an upper end side;
A lattice-shaped support frame coupled to the barrier wall at the tunnel side of the barrier wall and formed of an H beam; And
A horizontal rail formed at an extension of the support frame and a guide roller provided at an upper end of the opening / closing door to move side and front and rear directions of the opening and closing door;
Soundproof device comprising a. The soundproofing device according to claim 5, wherein the soundproof structure comprises a supporter and a sound absorbing member layer and an elastic member layer disposed between the supporter and the supporter. The method of claim 6, wherein the soundproof structure is characterized in that it further comprises a reticular member layer on the front surface of the sound absorbing member layer, a non-woven fabric layer on the back of the sound absorbing member layer, and a protective member layer on the back of the elastic member layer. Soundproofing. The soundproofing device according to claim 6 or 7, wherein the elastic member layer is a plurality of springs uniformly disposed between the nonwoven fabric layer and the protective member layer. The soundproofing device according to claim 6 or 7, wherein the support is composed of a plurality of partitions that can be coupled to and separated from each other, and each partition includes the soundproof structure therein. The soundproofing device according to claim 6 or 7, wherein the support is composed of a plurality of soundproof structural segments, and the lattice shape is formed by a joining portion between the segments. delete The soundproofing device according to any one of claims 5 to 7, wherein the entrance opening and the opening and closing door are substantially the same in shape and area. delete The soundproofing device according to any one of claims 5 to 7, wherein the barrier wall is formed by combining a plurality of segments having a soundproof structure with each other.

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