JPH04166600A - Tunnel construction sound-insulation device and assembly method thereof - Google Patents

Abstract

PURPOSE:To promote economic efficiency and built-up efficiency by forming a sound insulating sheet of a plurality of rectangular sound insulating panels and a plurality of peripheral sound insulating panels, and connecting both panels to blocked a tunnel opening. CONSTITUTION:Two sheet bearing devices 15 are erected to positions dividing an opening into three in a tunnel opening. After that, a plurality of rectangular sound insulating panels RP1-RP3 and a plurality of peripheral sound insulating panels CP1-CP14 having curved sections are alternately connected to each other to form a sound insulating sheet SS, and it is borne on the bearing devices 15 and a shore 33.

Description

[Detailed Description of the Invention] "Technical Field" The present invention provides sound insulation for noise generated during tunnel construction,
The present invention relates to a sound insulation device for tunnel construction with improved ease of assembly, and a method for assembling the sound insulation device.

"Prior art and its problems" Tunnel construction generally involves blasting work, which generates extremely loud noise. This noise did not become a social problem while tunnel construction was being carried out only deep in the mountains, far away from people's homes, but it has become a major social problem in recent years as tunnel construction sites and people's homes have come closer together.

Against this background, various sound insulation devices are already in use. In ancient times, a structure was used in which the tunnel opening was closed with iron plates, but this was not only difficult to work with, but also had little sound insulation effect.

In recent years, with the development of sound insulating sheets, various devices have been proposed for using them in tunnel construction. One of them is
Weld and fix the guide rail along the shoring provided in the longitudinal section of the tunnel opening (referring to the section perpendicular to the extension direction),
The structure is such that roller bodies provided at predetermined intervals on the edge of the sound insulation sheet are inserted through this guide rail to suspend and support the sound insulation sheet.

However, with this sound insulation device, the guide rail must be made to match the curvature of the inner surface of the tunnel opening each time. Guide rails have to be made, and workability is very poor.

Furthermore, the guide rail that has been used twice may not be usable again, so it is not economical.

``Object of the Invention'' The object of the present invention is to obtain a sound insulation device for a tunnel that is more economical and easier to assemble.

A further object of the present invention is to provide a method for assembling a sound insulation device for tunnel construction, which improves the workability and ease of assembly when attaching a sound insulation sheet to the inner surface of a tunnel opening.

``Summary of the Invention'' The present invention first changes the conventional sound insulation device that used a single sound insulation sheet to block the tunnel opening, and uses a divided panel structure to make the handling of the sound insulation sheet easier. Made it easy.

That is, the present invention provides a sound insulation device for tunnel construction in which a tunnel opening is closed with a sound insulation sheet, in which the sound insulation sheet is connected to a plurality of rectangular sound insulation panels that should be located at the center of the tunnel opening, and a periphery (that should be located at the periphery). The tunnel opening is characterized in that it is divided into two curved sound insulation panels, and these rectangular sound insulation panels and peripheral sound insulation panels are connected to close the tunnel opening.

According to this configuration, the sound insulation sheet can be easily divided and transported, and the assembly can be easily carried out by simply connecting the plurality of rectangular sound insulation panels and the surrounding sound insulation panels one after another.

Furthermore, even if the curvature of the inner surface of the tunnel opening changes, this can be accommodated by simply replacing the surrounding sound insulating panels with ones of other curvatures, so that economical efficiency can be improved.

In addition, by connecting multiple rectangular sound insulating panels to form a unitized opening/closing door, and connecting the upper part of the unit to another rectangular sound insulating panel assembled earlier, a dump truck,
When entering and exiting construction materials, it is only necessary to open this opening/closing door, and it can be easily closed during blasting work.

Furthermore, the present invention proposes a method for assembling a sound insulation device for tunnel construction, which can efficiently assemble a plurality of sound insulation sheets divided into panel shapes and easily assemble the sound insulation device for tunnel construction.

This assembly method consists of a seat support device installed inside a tunnel opening, a panel holding frame that is raised and lowered along the seat support device; a plurality of rectangular sound insulating panels formed in a rectangular shape, and a curved inner surface of the tunnel opening. A rectangular sound insulating panel and a part of the surrounding sound insulating panels to be located at the upper part of the tunnel opening are assembled in advance. This assembled sound insulation panel is attached to the panel holding frame, and then this panel holding frame is raised and stopped once, and another rectangular sound insulation panel is placed under the rectangular sound insulation panel and the surrounding sound insulation panels that have been raised together with this panel holding frame. It is characterized by assembling the sound insulation panel and the surrounding sound insulation panel by sequentially connecting them.

"Embodiments of the Invention" The present invention will be described below with reference to illustrated embodiments. The present invention
As shown in FIG.
This figure shows a sound insulation device 11 for tunnel construction having a sound insulation sheet SS divided into sound insulation panels CP1 to CP14 (periphery). Inside the tunnel opening, two sheet support devices 15 are installed at positions that divide the opening into three parts, and the sound insulation sheets SS are connected to each other and attached to the sheet support devices 15 and the tunnel opening wall surface. It is supported by shoring 33. On both upper sides of the two seat support devices 15, openings 16.16 for air ducts are provided. The basic idea of the present invention is to improve transportability and assembly by dividing the sound insulation sheet SS into a large number of rectangular sound insulation panels and curved sound insulation panels.

A rectangular sound insulating panel RPI, which is a basic form of a rectangular sound insulating panel, is shown in FIG. 4A. This rectangular sound insulation panel RPI has a frame 17 formed in a rectangular shape and a reinforcing frame 19 provided along a diagonal line of this rectangle. frame 1
7 has a large number of sheet fixing holes 18 formed therethrough at predetermined intervals. This sheet fixing hole 18 is used to bolt the edge of a divided sheet 20 formed to approximately the same size as the rectangular sound insulating panel RPI. The curved sound insulating panels CPI to CP14 are shaped to match each of the panels, and are attached to each panel.

FIG. 4B shows a rectangular sound insulating panel RP2 used near the periphery of the tunnel opening. This rectangular sound insulating panel RP2 is about half the size of the rectangular sound insulating panel RPI,
A seat fixing hole 18 is similarly formed in the frame 17a,
A reinforcing frame 19 is provided along the diagonal line.

Fig. 4C shows the reinforcement frame 19 of the rectangular sound insulation panel RPI.
A rectangular sound insulating panel RP3 with a simplified structure is shown.

FIG. 4D shows a common side view of these rectangular sound insulating panels RPI, RP2, and RP3. In this side view, rectangular sound insulation panel RP1. RP2, and RP
A large number of coupling bolt holes 21 are formed through each frame 17.17a of No. 3 from the outside to the inside. By inserting a bolt into this coupling bolt hole 21, the rectangular sound insulating panel RP1. RP2 and RP3 are fixed to the seat support device 15.15, or the panels are fixed to each other. FIG. 2 is a diagram showing where each panel is used in the tunnel opening. The rectangular sound insulating panel RPI is used in the positions A, B, D, E, and F in FIG. 2, and the rectangular sound insulating panel RP2 is used in the position C in FIG.

A curved acoustic panel CPI is shown in FIG. 5A. This curved sound insulating panel CPI has a curved frame 22a along the inner surface of the tunnel opening and a straight frame 22b, and is reinforced by a large number of reinforcing frames 23. Similarly, seat fixing holes 18 and coupling bolt holes 25 are formed through these frames (FIGS. 5B to 50). This curved sound insulating panel CP1 is used at the upper center of the tunnel opening, that is, at the position shown in FIG. 2G, and by turning it over, it can be used on both the left and right sides.

The left and right curved sound insulating panels CPI, that is, the second
A curved sound insulating panel CP2 is bolted to the position indicated by H in the figure. Similar to the curved sound insulation panel CPI, this curved sound insulation panel CP2 also has a curved frame 25a and a straight frame 25b along the inner surface of the tunnel opening, is reinforced by a reinforcing frame 23, and has sheet fixing holes 18 and coupling bolt holes 21. They are formed at predetermined intervals.

Figure 6 shows the reinforcement frame 23 from the curved sound insulation panel CPI.
Curved sound insulation panel C with simplified structure by reducing the number of panels.
P3 and a curved sound insulating panel CP4 without the reinforcing frame 23.

FIG. 7 shows curved sound insulation panels CP5, CF2, and C used at the positions indicated by J, L, and M in FIG. 2, respectively.
F2, and CF2 are shown.

These curved sound insulation panels CP5, CF2, CF2, and CF2 are curved frames 26a and 27a.

29a, 30a and straight frames 26b, 27b, 29
b and 30b, and are reinforced by a large number of reinforcing frames 23.

The curvature of the curved frames 26a-30a is determined to follow the inner surface of the tunnel opening. Curved sound insulation panel CP5, C
F2, CF2, and CF2 have curved sound insulation panels CP
Similar to I, a large number of seat fixing holes 18 and coupling bolt holes 21
is formed. Curved sound insulation panel CP5, CF2, C
F2 and CF2 can be used on either the left or right side of the tunnel opening by turning them over.

FIG. 8 shows curved sound insulating panels CP9 and CPIOlC which have simplified structures by omitting the reinforcing frame 23 from each of the curved sound insulating panels CP5, CF2, CF2, and CF2.
Pll, CF12 is shown.

FIG. 9A shows a curved sound insulating panel CP13 used in the position indicated by ■ in FIG. 2. This curved sound insulation panel CP
13 has a curved frame 31a and a straight frame 31b, and is reinforced by a reinforcing frame 23. An annular frame 32 that constitutes the ventilation duct opening 16 is provided in a region surrounded by the straight frame 31b.

Sheet fixing holes 18 are also formed in this frame 32 at predetermined intervals, and are used to fix the periphery of the hole, which has substantially the same shape as the annular frame 32 formed in the divided sheet 20. Similarly, a large number of coupling bolt holes 21 are formed in the frames 31a and 31b of the curved sound insulating panel CP13 (FIGS. 9B to 90).

The curved sound insulating panel CP13 can be used on either the left or right side of the tunnel opening by turning it over.

FIG. 10 shows a curved sound insulation panel CP14 that is simplified by omitting the annular frame 32 from the curved sound insulation panel CP13 and reducing the number of reinforcing frames 23.

Next, the structure for lifting the rectangular sound insulating panel and the curved sound insulating panel, their assembly procedure, and the structure for fixing them to the shoring 33 will be explained.

As is well known, the supports 33 are provided on the inner surface of the tunnel opening at appropriate intervals in the extending direction. Further, seat support bags ff115 are erected on both sides of the central portion of the tunnel opening. This seat support device 15 has a guide support pedestal 40 and a guide support 41, as shown in FIGS. 12 to 14. This guide support 41 has a rod shape, and has panel fixing holes 43 formed at predetermined intervals as shown in FIG.
is provided. A support plate 47 having a support bin 46 projecting laterally is fixed to the tip of the mounting bar 45 (FIG. 17). As shown in Figure 17, shoring 3
3, a guide plate 49 is fixed at a position corresponding to the seat support device 15. This guide plate 49
A long hole 50 is formed in the vertical direction of the figure.

The support bin 46 is slidably inserted into the elongated hole 50.

The guide support pedestal 40 that supports the guide support 41 includes a support pedestal 52 buried in the ground, and a guide support pedestal 40 that supports the guide support 41.
A reinforcing plate 53 is provided between the supporting base 52 and the supporting base 52. As shown in FIG. 12, the lower part of the guide support 41 is slidably fitted into a hollow guide support base 40. As shown in FIG. This guide support pedestal 40 has elongated holes 55 and 55 formed in the vertical direction.
．． Sliding bins 56 and 56 are slidably inserted into each of 55, respectively. A jack 57 is arranged below the guide support 41, that is, on the support stand 52. When this jack 57 is operated, the guide support 41 is moved through the elongated hole 50.
Guide support 41 as much as movement is allowed by 55.
Move up and down relative to. This guide support 41
is further supported by a turnbuckle 54.

The panel holding frame 37, as shown in FIG.
Reinforced by 0.

Sliding support portions 37 are located at both right ends of the panel holding frame 37.
A is provided. The sliding support portion 37a is hollow and is slidably fitted into the guide support 41 to slidably support the panel holding frame 37 in the vertical direction.

An electric chain block 35 movable along the guide rail 64 in the direction of extension of the tunnel is arranged between the seat support devices 15 on the inner surface of the tunnel opening. The guide rail 64 is fixed by welding or the like to supports 33, 33 provided at appropriate intervals in the extending direction along the longitudinal section of the tunnel (FIGS. 14 to 16). This guide rail 64 is located between the seat support devices 15 and 15, and one end thereof is fixed to the shoring 33 on the side on which the seat support device 15 is erected, and the other end extends toward the inside of the tunnel. and is fixed to the next shoring 33.

Guide rollers 65 of the electric chain block 35 are fitted into the guide rails 64, so that the electric chain block 35 can freely move in the direction of extension of the tunnel. This electric chain block 35 is driven by an electric motor 66 to wind up or lower a chain 67 to move a hook 68 up and down. During assembly or disassembly work, the electric chain hoist 35 uses the panel holding frame 3 that is slidably supported by the seat support device 15.
7 is hung with the hook 68. and chain 67
By hoisting up or lowering the panel holding frame 37
At the same time, the rectangular sound insulation panel and the curved sound insulation panel are raised and lowered.

Further, while the sound insulation device 11 for tunnel construction is being assembled, a hook 68 is hung on the back side of the opening/closing door section 69, and the opening/closing door section 69 is opened/closed by winding up and lowering the chain 67. The opening/closing door section 69 is located at A, D, E in the center of FIG.
It is a substantially square-shaped combined sound insulation panel formed by combining 16 rectangular sound insulation panels RP located at F, and four rectangular sound insulation panels RPI shown at B in the figure placed above it.
is supported via a hinge shaft H3. The electric chain block 35 that opens the opening/closing door 69 (and sometimes pulls the opening/closing door 69 upward) is located on the left side of FIG. FIG. 14 As the electric chain hoist 35 is rotated counterclockwise, the chain 36 moves the electric chain hoist 35 to the right in the figure.

On the other hand, when closing the opening/closing door section 69 that has opened in the opposite direction, the chain 3
14, the electric chain hoist 35 gradually moves to the left in the figure while being pulled by the chain 36. That is, since the electric chain hoist 35 is free with respect to the guide rail 64, the opening/closing door portion 69 can be opened and closed smoothly.

Figures 19 and 20 show the panel mounting plate 70 and its surrounding support structure. This panel mounting plate 70 is
A bolt insertion notch (free groove) 70b is formed from one side 70a of the square toward the center. Then, the panel mounting plate 70 is arranged so that the panel mounting plate 70 is approximately perpendicular to the shoring 33 and its flat surface is along the longitudinal direction of the shoring 33.
is welded to the support 33 (Fig. 20). This enables the next task.

For example, while the frame 22a of the curved sound insulation panel CPI is brought into contact with this panel mounting plate 70 and raised, the hook portion 72a of the hook portion bolt 72 is inserted through the bolt insertion notch 70b.
is hooked onto the locking portion 24 formed along the longitudinal direction of the upper end of the frame 22a, and in this state, the nut 73 is
Tighten. Thereby, the hook portion 72a presses the frame 22a against the panel mounting plate 70 and supports the locking portion 24, so that the curved sound insulating panel CPI is securely fixed to the shoring 33. According to this mounting process, no matter where the curved sound insulating panel CP is in relation to the hook bolt 72, it can be easily and securely mounted to the shoring 33 by the hook portion 72a. , it is possible to weld at any position on the shoring 33 without worrying too much about detailed dimensions, and therefore the work can proceed quickly. In the figure, 74 is a sound insulation packing, and by inserting it between the shoring 33 and the curved frame of each curved panel,
Improves sound insulation effect.

A shoring mounting plate 75 (FIG. 21) is provided on the shoring 33 at a position corresponding to FIG. 2G.

Therefore, in place of the panel mounting plate 70 described above, a panel mounting plate 76 having a slightly different shape from the mounting plate 70 is used at this location. This panel mounting plate 76 is similar to the shoring mounting plate 7
5, and two long holes 76b formed in two rows in the vertical direction in the figure. Then, with the notch 76a straddling the shoring mounting plate 75, the shoring 33 is
A long hole 77 is formed in the edge of the curved sound insulating panel CPI, which should be at position G shown in FIG. ,7
6b, and insert the bolt 78. Then, tighten the nut 79 at the optimal position while absorbing the positional deviation of the sound insulation sheet SS that moves vertically and horizontally, and then tighten the nut 79 to connect the curved sound insulation panel CP.
1, that is, the sound insulation sheet SS is fixed to the support 33.

The tunnel construction sound insulation device 11 of the present invention has the above-mentioned configuration, and the assembly process thereof will be comprehensively explained next.

Sound insulation device 11 for tunnel construction inside the tunnel opening
A guide rail 64 is attached to the support 33 closest to the position where the chain hoist is to be installed, and an electric chain hoist 35 is arranged. A pair of seat support devices 15 are arranged below this shoring 33. At this time, a guide plate 49 is welded to the shoring 33 in correspondence with the seat support device 15, and a panel mounting plate 70 is also welded at an appropriate interval.
and 76 are welded (a pair of seat support devices 15
are separated as much as possible to insert the panel holding frame 37 between them, and the panel holding frame 3 is placed on the guide support 41.
The guide support pedestal 40 is firmly supported by fitting the sliding support portion 37a of No. 7 and further burying the support pedestal 52 in the ground.

Next, in order to attach the sound insulation sheet ss to the panel holding frame 37 that is raised and lowered along the guide support 41, the curved sound insulation panel CPI, the rectangular sound insulation panel mounting plate, etc. shown in the shaded area in FIG. 1 are assembled. That is, the two curved sound insulating panels CPI, CF2, and CF13 on the left and right sides, and the four rectangular sound insulating panels RPI, which are located at the upper part of the inner surface of the tunnel opening, and the four rectangular sound insulating panels RPI are bolted together and fixed to the panel holding frame 37 as a unit. . In this state, the electric chain block 35 is driven to wind up the chain 36, and the hatched part in the figure is raised together with the panel holding frame 37, and then stopped at an appropriate height.

On the other hand, an appropriate number of rectangular sound insulating panels RPI, which are to become the opening/closing door section 69, are assembled into a unit by bolting, for example, four panels, and the four rectangular sound insulating panels RPI, which were previously raised as the shaded area above, Attach via hinge shaft H3. Furthermore, while sequentially winding up the chain 36, an appropriate number of rectangular sound insulating panels RPI are sequentially connected in the same way to complete the opening/closing door portion 69. In parallel with this, on the left and right sides of the pair of seat support devices 15, rectangular sound insulating panels RP1. Work is performed to connect RP2 and the curved sound insulation panel CP5 to the curved sound insulation panel CP13 that was raised earlier. Attach each panel one after another,
The area indicated by A-M in FIG. 2, that is, the entire tunnel opening is completely closed. In this case, the rectangular sound insulating panels RPI located on both the left and right sides of the seat support device 15 are bolted to the guide support 41, but the rectangular sound insulating panel RPI located in the center of the seat support device 15 as the opening/closing door portion 69 is Since it can be opened and closed freely, it is not fixed to the guide support 41.

In this way, the sound insulation sheet SS is attached to the seat support device 15.
The whole is supported, and the jack 57 is operated to raise the guide support 41 together with the entire sound insulation sheet SS relative to the guide support pedestal 4o. Then, a sound insulation packing 74 is inserted between each curved sound insulation panel in contact with the inner surface of the tunnel opening and the inner surface of this tunnel opening, and the hook of the hook portion bolt 72 that has been inserted in advance into the bolt insertion notch 70b of the panel mounting plate 70 is inserted. The portion 72a is hooked onto the frame of each curved sound insulating panel. Furthermore, the left and right jacks 57 are finely adjusted so that the sound insulation sheet SS is in the optimal position relative to the tunnel opening, and the nuts 73 of each hook bolt 72 are tightened.
are sequentially tightened, and the nuts 79 of the bolts 78 are tightened to completely fix the sound insulation sheet SS to the inner surface of the tunnel opening.

After the sound insulation sheet SS is installed as described above, the opening/closing door section 69 is opened and closed as necessary. In the open state,
Dump trucks can move in and out of the tunnel, materials can be transported, etc., and when closed, it can provide sound insulation. When performing blasting work, open/close door section 6
A rectangular panel constituting 9 is fixed to a guide support 41.

Sound insulation sheet) SS can be divided into a large number of rectangular sound insulation panels RPI and curved sound insulation panels CPI to CP13, so it can be easily transported and work can be carried out easily when relocating equipment in a tunnel. . Even if the curvature of the inner surface of the tunnel opening changes, this can be accommodated by simply replacing the curved frame of the curved sound insulation panel with one of a different curvature, so the rectangular sound insulation panel RPI
can be used as is, thereby improving economic efficiency.

``Effects of the Invention'' As described above, according to the present invention, by sequentially connecting the divided rectangular sound insulation panel at the center and the peripheral sound insulation panels at the periphery, the sound insulation sheet can be easily assembled on site, and the sound insulation sheet can be easily assembled at the tunnel opening. can be easily occluded. This improves the ease of assembling the device, making it easy to move it to the back as tunnel construction progresses. Even if the curvature inside the tunnel opening changes during this relocation,
It is economical because this can be accommodated simply by replacing the surrounding sound insulating panels with ones having a different curvature.

In addition, if a unitized opening/closing door is constructed by connecting multiple rectangular sound insulating panels, and the upper part of the door is supported via a hinge so that it can be opened and closed to other rectangular sound insulating panels assembled earlier, it can be used for dump trucks, construction materials, etc. When entering and exiting, it is only necessary to open this rectangular sound insulating panel, which can be opened and closed, and during blasting work, it can be easily closed to provide sound insulation.

Furthermore, according to the method of the present invention, a part of the rectangular sound insulation panel and the surrounding sound insulation panel, which have been assembled in advance, are raised to the upper part of the tunnel opening by the seat support device and the panel holding frame, and another rectangular sound insulation panel is Since the device can be completed by sequentially connecting the sound insulation panels and the surrounding sound insulation panels, the assembly work can proceed extremely easily and safely.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the entire sound insulation device for tunnel construction of the present invention, FIG. 2 is a schematic diagram showing the positions of a rectangular sound insulation panel and surrounding sound insulation panels within a tunnel opening, and FIG. A schematic diagram showing a state in which the sound insulating sheet is removed from FIG. FIG. 4D is a side view of the rectangular sound insulating panel shown in FIGS. 4A to 4C, FIG. 5A is a front view of the surrounding sound insulating panel, FIG. 5B is a plan view of FIG. 5A, and FIG. 5C is is a side view of FIG. 5A, FIG. 6 is a front view of a simplified peripheral sound insulation panel of FIG. 5A, and FIG. 7 is a peripheral sound insulation panel with a different shape from FIG. 5A. 8 is a front view showing a peripheral sound insulation panel that is a simplified version of the peripheral sound insulation panel shown in FIG. 7; FIG. 9A is a front view showing yet another peripheral sound insulation panel; FIG. 9B is a front view showing another peripheral sound insulation panel; 9A is a plan view of FIG. 9A, FIG. 9C is a side view of FIG. 9A, FIG. 10 is a front view of a simplified peripheral sound insulating panel of FIG. 9A, and FIG. 11 is a plan view of FIG. 9A. is a front view showing the panel holding frame, FIG. 12 is a front view showing the seat support device in detail, FIG. 13A is a side view of FIG. 12, FIG. 13B is a plan view of FIG. 12, and FIG. 14 Figure 15 is a front view of the electric chain hoist, Figure 16 is a side view of the electric chain hoist and guide rail, and Figure 17 is the support plate on the upper part of the guide support. FIG. 18 is a side view showing the guide support in detail; FIG. 19 is a side view showing the panel mounting plate; FIG. 20 is a side view showing the support structure for the upper part of the sound insulation sheet; This figure is a front view showing the support structure for the upper part of the sound insulating sheet at a different location from that shown in FIG. 20. DESCRIPTION OF SYMBOLS 11... Sound insulation device for tunnel construction, 15... Sheet support device, 16... Opening for ventilation duct, 17... Frame, 18... Seat fixing hole, 19... Reinforcement frame, 20... ...Divided sheet, 21...Joining bolt hole, 22a...Curved frame, 22b...Straight frame, 23...Reinforcement frame, 24...Locking part, 33
...Shoring, 35...Electric chain hoist, 36
...Chain, 37...Panel holding frame, 40
...Guide support pedestal, 41...Guide support, 45...Mounting bar, 46...Support bin, 47...
・Support plate, 49...Guide plate, 52...
- Support stand, 54... Turnbuckle, 57... Jacket, 64... Guide rail, 65... Guide roller, 68... Hook, 69... Opening/closing door part, 70...
・Panel mounting plate, 70b... Notch for bolt insertion (free groove), 72... Hook bolt, 73... Nut, 74.
...Sound insulation packing, 75...Shoring mounting plate, 76...
・Panel mounting plate, 78...Bolt, 79...Nut, CP1 to CP14...Peripheral (curved) sound insulation panel, H
3...Hinge shaft, RPI~RP3...Rectangular sound insulation panel. Figure 4A Figure 4B Figure 4C Figure 4D Figure 7 Figure 8 Figure 9A Figure 9C Figure 9B Figure 10 Figure 12 Figure 13A Figure 14 Figure 15 - 33, 33 Figure 16 Figure 17

Claims (4)

[Claims] (1) In a sound insulation device for tunnel construction that closes a tunnel opening with a sound insulation sheet, the sound insulation sheet is located at the center of the tunnel opening,
The rectangular sound insulating panels are divided into a plurality of rectangular sound insulating panels that can be combined with each other, and a plurality of peripheral sound insulating panels located around the tunnel opening that can be combined with the rectangular sound insulating panels, and these rectangular sound insulating panels A sound insulation device for tunnel construction, characterized in that a tunnel opening is closed by connecting a peripheral sound insulation panel to a sound insulation panel. (2) In claim 1, a plurality of rectangular sound insulating panels are connected to form an opening/closing door, and this opening/closing door is openably/closably connected to another rectangular sound insulating panel fixed to a tunnel opening via a hinge. Sound insulation equipment for tunnel construction. (3) In claim 1, a seat support device is provided upright within the tunnel opening, and a panel holding frame that is raised and lowered along the seat support device is provided; Support the combined sound insulation panel made by assembling the rectangular sound insulation panel and the surrounding sound insulation panel, and then raise this panel holding frame and once stop it, the combined sound insulation panel that has been raised together with this panel holding frame,
A method for assembling a sound insulation device for tunnel construction, which comprises connecting and assembling another rectangular sound insulation panel and a peripheral sound insulation panel. (4) In claim 1, the inner surface of the tunnel opening is provided with supports at appropriate intervals in the direction of extension thereof, and the supports include:
A sound insulation device for tunnel construction in which a panel mounting plate having a play groove for vertically moving a hooked bolt for mounting a peripheral sound insulation panel is fixed, and the peripheral sound insulation panel is mounted on the panel mounting plate by the hooked bolt. .