Underground cavern assembly type decoration structure

Abstract

The utility model provides a fabricated decoration structure of an underground cavity. The fabricated decoration structure comprises a metal decoration plate wall surface, a metal decoration plate suspended ceiling and a waterproof layer, waterproof layers are laid on the top and the side portion of the cavern rock wall; a metal decorative plate wall surface is mounted on the outer side of the waterproof layer on the side part in an assembled manner; a metal decorative plate suspended ceiling is installed below the waterproof layer on the top in an assembly mode; decorative plates of the metal decorative plate wall surface and the metal decorative plate suspended ceiling are curved decorative plates formed by splicing small blocks. The utility model has the following advantages: 1, the wall surface and the top arch adopt a plurality of spliced small curved surface decorative plates, so that the mounting efficiency of the curved surface decorative plates can be improved, and the curved surface decorative plates are prevented from deforming; in the construction process, the position of the curved-surface decorative plate can be flexibly adjusted, and the curved-surface decorative plate has the advantages of being convenient to construct and efficient to disassemble and assemble, so that the use requirement is met. 2, the fabricated decoration structure greatly improves the decoration work efficiency, ensures the decoration quality, is green and environment-friendly, and can be widely applied to decoration projects such as suspended ceilings and wall surfaces;

Description

Technical Field

[0001] The utility model belongs to the technical field of decoration, and particularly relates to an assembled decoration structure for underground chambers. Background Art

[0002] The power generation plant of a pumped storage power station generally adopts the form of an underground power house. As the main passage connecting the underground power house cavern group with the outside, the access tunnel has certain over-excavation and under-excavation during excavation, resulting in uneven walls and crowns. In addition, due to rich groundwater, the access tunnel is also characterized by a humid environment. The junction of the access tunnel and the power house is an important hub space for operators, experts to conduct inspections, and visitors to enter and leave the power house. In order to create a clean and tidy environment and meet the requirements of waterproofing and aesthetics, decoration is required.

[0003] The decoration surface of the access tunnel of the underground power house of a pumped storage project has the characteristics of a hyperboloid, and the walls and crowns have arcs. Therefore, curved decorative panels need to be installed. At present, in engineering practice, for the decoration surface of the access tunnel of the underground power house of a pumped storage project, the traditional method of using large curved decorative panels has problems such as easy deformation of the large curved decorative panels, complex construction process, long construction time, and low efficiency, which affect the construction period. Summary of the Utility Model

[0004] Aiming at the defects existing in the prior art, the utility model provides an assembled decoration structure for underground chambers, which can effectively solve the above problems.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] The utility model provides an assembled decoration structure for underground chambers, including a metal decorative panel wall (1), a metal decorative panel ceiling (2), and a waterproof layer (4);

[0007] The waterproof layer (4) is laid on both the top and the side of the chamber rock wall (3); the metal decorative panel wall (1) is assembled and installed on the outside of the waterproof layer (4) on the side; the metal decorative panel ceiling (2) is assembled and installed below the waterproof layer (4) on the top;

[0008] The decorative panels of the metal decorative panel wall (1) and the metal decorative panel ceiling (2) are both curved decorative panels assembled by small pieces.

[0009] Preferably, the metal decorative panel wall (1) includes a first fixing member (1-1), a leveling member (1-2), a transverse keel (1-3), a vertical keel (1-4), a wall metal decorative panel (1-5), and a first bolt (1-6);

[0010] A plurality of the transverse keels (1-3) are arranged in parallel from top to bottom and are located outside the waterproof layer (4) on the side; outside the plurality of the transverse keels (1-3), a plurality of the vertical keels (1-4) arranged in parallel along the length direction of the cavern are welded and fixed, thereby forming a light steel keel framework for the wall; outside the vertical keels (1-4), a plurality of the wall metal decorative plates (1-5) are spliced and installed;

[0011] A plurality of the leveling members (1-2) are arranged between the light steel keel framework for the wall and the waterproof layer (4) on the side; the outside of the leveling members (1-2) is welded and fixed to the transverse keels (1-3) of the light steel keel framework for the wall; the inside of the leveling members (1-2) is welded with the first fixing members (1-1), and the first fixing members (1-1) are fixed to the side of the cavern rock wall (3) through the first bolts (1-6).

[0012] Preferably, the metal decorative plate wall (1) further includes first special screws (1-7);

[0013] The wall metal decorative plates (1-5) and the vertical keels (1-4) are installed and fixed through the first special screws (1-7).

[0014] Preferably, the metal decorative plate ceiling (2) includes second fixing members (2-1), vertical bases (2-2), arc-shaped longitudinal keels (2-3), arched transverse keels (2-4), ceiling metal decorative plates (2-5) and second bolts (2-6);

[0015] A plurality of the arc-shaped longitudinal keels (2-3) are arranged along the width direction of the cavern at different height positions and are located below the waterproof layer (4) at the top, and each of the arc-shaped longitudinal keels (2-3) is arranged to form an arch; below the plurality of the arc-shaped longitudinal keels (2-3), the arched transverse keels (2-4) are fixedly installed, thereby forming an arc-shaped light steel keel framework for the ceiling; below the arched transverse keels (2-4), a plurality of the ceiling metal decorative plates (2-5) are spliced and installed;

[0016] A plurality of the vertical bases (2-2) are hung and installed between the arc-shaped light steel keel framework for the ceiling and the waterproof layer (4) at the top; the bottom of the vertical bases (2-2) is welded and fixed to the arc-shaped longitudinal keels (2-3); the top of the vertical bases (2-2) is welded with the second fixing members (2-1), and the second fixing members (2-1) are fixed to the top of the cavern rock wall (3) through the second bolts (2-6).

[0017] Preferably, the metal decorative plate ceiling (2) further includes second special screws (2-7);

[0018] Between the ceiling metal decorative plate (2-5) and the arched transverse keel (2-4), they are installed and fixed by the second special screw (2-7).

[0019] Preferably, the metal decorative plate ceiling (2) further includes a special keel connecting piece (2-8);

[0020] Between the arc-shaped longitudinal keel (2-3) and the arched transverse keel (2-4), they are connected and fixed by the special keel connecting piece (2-8).

[0021] Preferably, the special keel connecting piece (2-8) includes an L-shaped connecting piece (2-81) and a U-shaped clamping piece (2-82);

[0022] The L-shaped connecting piece (2-81) and the U-shaped clamping piece (2-82) are arranged in pairs. The L-shaped connecting piece (2-81) is arranged below the arc-shaped longitudinal keel (2-3) and is welded and fixed to the bottom of the arc-shaped longitudinal keel (2-3) to support the arc-shaped longitudinal keel (2-3); the U-shaped clamping piece (2-82) is sleeved outside the arched transverse keel (2-4) to hang the arched transverse keel (2-4); the U-shaped clamping piece (2-82) and the L-shaped connecting piece (2-81) are welded and fixed, thereby realizing the connection and fixation between the arc-shaped longitudinal keel (2-3) and the arched transverse keel (2-4).

[0023] Preferably, the arched transverse keel (2-4) and the vertical keel (1-4) are welded to form an integral body.

[0024] Preferably, the wall metal decorative plate (1-5) and the ceiling metal decorative plate (2-5) are made of any one of aluminum alloy single plates, galvanized steel plates, magnesium-aluminum curved panels and stainless steel plates.

[0025] Preferably, the waterproof layer (4) is made of a quick-setting rubber asphalt waterproof coating.

[0026] The prefabricated decoration structure of an underground cavern provided by the present utility model has the following advantages:

[0027] 1. The wall and the top arch adopt small curved decorative plates spliced in multiple pieces, which can improve the installation efficiency of the curved decorative plates and prevent the deformation of the curved decorative plates; during the construction process, the position of the curved decorative plates can be adjusted flexibly, and it also has the advantages of convenient construction, high-efficiency disassembly and assembly, so as to meet the use requirements.

[0028] 2. The prefabricated decoration structure adopts a simple assembly mode such as "keel support + precast slab", which greatly improves the decoration work efficiency, ensures the decoration quality, is green and environmentally friendly, and can be widely applied to decoration projects such as ceilings and walls.

[0029] 3. The prefabricated decoration structure successfully avoids most of the difficult-to-control wet operation construction problems. By directly using pre-produced component parts, on-site operations only involve anchoring, supporting, splicing, etc., which greatly improves the construction accuracy, reduces the complexity of the construction process, shortens the construction time, and improves the construction efficiency and quality. Compared with traditional decoration, the biggest advantage of the prefabricated decoration structure is that it can improve the "dirty, messy and poor" environment at the construction site, effectively reduce environmental pollution such as construction waste, dust and noise, improve the disassembly and assembly convenience of component parts, shorten the construction period, and reduce the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a cross-sectional schematic view of the prefabricated decoration structure of the underground chamber provided by the present utility model;

[0031] Figure 2 is Figure 1 A sectional view along B-B;

[0032] Figure 3 It is a schematic diagram of the keel installation of the prefabricated decoration structure of the underground chamber provided by the present utility model;

[0033] Figure 4 is Figure 1 An enlarged view of A in

[0034] Wherein:

[0035] 1 Metal decorative board wall; 1-1 First fixing piece; 1-2 Leveling piece; 1-3 Horizontal keel; 1-4 Vertical keel; 1-5 Wall metal decorative board; 1-6 First bolt; 1-7 First special screw;

[0036] 2 Metal decorative board ceiling; 2-1 Second fixing piece; 2-2 Vertical base frame; 2-3 Curved longitudinal keel; 2-4 Arch-shaped horizontal keel; 2-5 Ceiling metal decorative board; 2-6 Second bolt; 2-7 Second special screw; 2-8 Special keel connecting piece; 2-81 L-shaped connecting piece; 2-82 U-shaped clip;

[0037] 3 Chamber rock wall;

[0038] 4 Waterproof layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0040] Refer to Figures 1 to 4, the utility model provides an assembled decoration structure for underground chambers, including a metal decorative panel wall 1, a metal decorative panel ceiling 2 and a waterproof layer 4;

[0041] The waterproof layer 4 is laid on both the top and side parts of the chamber rock wall 3; the waterproof layer 4 can adopt a quick-setting rubber asphalt waterproof coating; by setting the waterproof layer 4, the service life of the metal decorative panel wall 1 and the metal decorative panel ceiling 2 can be improved.

[0042] On the outside of the waterproof layer 4 on the side part, the metal decorative panel wall 1 is assembled and installed; below the waterproof layer 4 on the top part, the metal decorative panel ceiling 2 is assembled and installed; the decorative panels of the metal decorative panel wall 1 and the metal decorative panel ceiling 2 are both small-piece spliced curved decorative panels.

[0043] The structures of the metal decorative panel wall 1 and the metal decorative panel ceiling 2 are introduced in detail as follows:

[0044] (1) Metal decorative panel wall 1

[0045] Combined with Figure 1 and Figure 3 , the metal decorative panel wall 1 includes a first fixing part 1-1, a leveling part 1-2, a horizontal keel 1-3, a vertical keel 1-4, a wall metal decorative panel 1-5 and a first bolt 1-6;

[0046] Multiple horizontal keels 1-3 are arranged in parallel from top to bottom and are located outside the waterproof layer 4 on the side part; outside the multiple horizontal keels 1-3, multiple vertical keels 1-4 arranged in parallel along the length direction of the chamber are welded and fixed, thus forming a wall light steel keel framework; outside the vertical keels 1-4, multiple wall metal decorative panels 1-5 are spliced and installed;

[0047] Between the wall light steel keel framework and the waterproof layer 4 on the side part, multiple leveling parts 1-2 are arranged; the outside of the leveling part 1-2 is welded and fixed to the horizontal keel 1-3 of the wall light steel keel framework; the inside of the leveling part 1-2 is welded with the first fixing part 1-1, and the first fixing part 1-1 is fixed to the side part of the chamber rock wall 3 through the first bolt 1-6. Therefore, the wall light steel keel framework is fixed to the side part of the chamber rock wall 3 through the leveling part 1-2, the first fixing part 1-1 and the first bolt 1-6. During the construction process, the attitude of the leveling part 1-2 can be simply and conveniently adjusted, so as to adjust the position and attitude of the wall light steel keel framework to meet the construction requirements.

[0048] In practical applications, the metal decorative panel wall 1 further includes a first special screw 1-7; between the wall metal decorative panel 1-5 and the vertical keel 1-4, they are installed and fixed through the first special screw 1-7. The installation method using screws can simplify the installation of the wall metal decorative panel 1-5.

[0049] (2) Metal decorative panel ceiling 2

[0050] Combined with Figure 1 and Figure 2 Figure 2 , the metal decorative panel ceiling 2 includes a second fixing member 2-1, a vertical base frame 2-2, an arc-shaped longitudinal keel 2-3, an arched transverse keel 2-4, a ceiling metal decorative panel 2-5 and a second bolt 2-6;

[0051] A plurality of arc-shaped longitudinal keels 2-3 are arranged along the width direction of the chamber and at different height positions, and are located below the waterproof layer 4 at the top. Each arc-shaped longitudinal keel 2-3 is arranged to form an arch; below the plurality of arc-shaped longitudinal keels 2-3, an arched transverse keel 2-4 is fixedly installed to form a ceiling arc-shaped light steel keel framework; below the arched transverse keel 2-4, a plurality of ceiling metal decorative panels 2-5 are spliced and installed; the overall ceiling decorative panel formed by splicing the ceiling metal decorative panels 2-5 has a curvature both horizontally and vertically in three-dimensional space.

[0052] Between the ceiling arc-shaped light steel keel framework and the waterproof layer 4 at the top, a plurality of vertical base frames 2-2 are suspended and installed; the bottom of the vertical base frame 2-2 is welded and fixed to the arc-shaped longitudinal keel 2-3; the top of the vertical base frame 2-2 is welded with a second fixing member 2-1, and the second fixing member 2-1 is fixed to the top of the chamber rock wall 3 through a second bolt 2-6. Therefore, the ceiling arc-shaped light steel keel framework is fixed to the top of the chamber rock wall 3 through the vertical base frame 2-2, the second fixing member 2-1 and the second bolt 2-6. During the construction process, the attitude of the vertical base frame 2-2 can be adjusted simply and conveniently, so as to adjust the position and attitude of the ceiling arc-shaped light steel keel framework to meet the construction requirements.

[0053] In practical applications, the metal decorative panel ceiling 2 further includes a second special screw 2-7; between the ceiling metal decorative panel 2-5 and the arched transverse keel 2-4, they are installed and fixed through the second special screw 2-7. The installation method using screws can simplify the installation of the ceiling metal decorative panel 2-5.

[0054] In practical applications, the metal decorative panel ceiling 2 further includes a special keel connecting member 2-8; between the arc-shaped longitudinal keel 2-3 and the arched transverse keel 2-4, they are connected and fixed through the special keel connecting member 2-8. As a specific implementation structure, combined with Figure 4 , the special keel connecting member 2-8 includes an L-shaped connecting member 2-81 and a U-shaped clamping member 2-82;

[0055] The L-shaped connecting piece 2-81 and the U-shaped clamping piece 2-82 are arranged in pairs. The L-shaped connecting piece 2-81 is arranged below the arc-shaped longitudinal keel 2-3 and is welded and fixed to the bottom of the arc-shaped longitudinal keel 2-3 for supporting the arc-shaped longitudinal keel 2-3. The U-shaped clamping piece 2-82 is sleeved outside the arched transverse keel 2-4 for hanging the arched transverse keel 2-4. After the U-shaped clamping piece 2-82 and the L-shaped connecting piece 2-81 are set according to the angle and height, they are welded and fixed between the U-shaped clamping piece 2-82 and the L-shaped connecting piece 2-81, thereby realizing the connection and fixation between the arc-shaped longitudinal keel 2-3 and the arched transverse keel 2-4. In this application, the special keel connecting piece 2-8 can be used to realize the quick connection and installation between the arc-shaped longitudinal keel 2-3 and the arched transverse keel 2-4.

[0056] As a specific implementation structure, the arched transverse keel 2-4 and the vertical keel 1-4 are welded to form a whole, thereby enhancing the keel strength. The wall metal decorative panel 1-5 and the ceiling metal decorative panel 2-5 are spliced into a complete decoration finished surface.

[0057] As a specific implementation structure, both the first fixing piece 1-1 and the second fixing piece 2-1 adopt 50×50×5mm hot-dip galvanized angle codes. Both the leveling piece 1-2 and the vertical base 2-2 adopt L-shaped 50×50×5mm hot-dip galvanized angle steels. The transverse keel 1-3, the vertical keel 1-4, the arc-shaped longitudinal keel 2-3 and the arched transverse keel 2-4 all adopt 50×50×5mm hot-dip galvanized square steel pipes. The wall metal decorative panel 1-5 and the ceiling metal decorative panel 2-5 adopt any one of aluminum alloy single plates, galvanized steel plates, magnesium-aluminum curved panels and stainless steel plates. Both the first bolt 1-6 and the second bolt 2-6 adopt M12×100 stainless steel expansion bolts. Both the first special screw 1-7 and the second special screw 2-7 adopt self-tapping screws M4.8X25.

[0058] As a specific implementation structure, the spacing of the transverse keel 1-3 is not greater than 1200mm, the spacing of the vertical keel 1-4 is not greater than 1200mm, the spacing of the arc-shaped longitudinal keel 2-3 is not greater than 1200mm, and the spacing of the arched transverse keel 2-4 is not greater than 600mm.

[0059] As a specific implementation structure, the waterproof layer 4 uses a quick-setting rubber asphalt waterproof coating, which is a polymer elastic waterproof coating. It is spray-coated at room temperature in two components, perfectly covering the base, achieving seamless bonding with the base, and having extremely strong bonding force to concrete, metal, stone, etc. At the same time, there are both physical and chemical bonds, forming a "skin-type" waterproof layer, thus realizing the functions of non-water leakage and non-peeling that are difficult to achieve with rolls. It is especially suitable for special-shaped and complex structures, and the construction is more convenient. The average elongation at break of the quick-setting rubber asphalt waterproof coating film can reach more than 1000%, and the recovery rate is as high as more than 90%, which can effectively solve the leakage problems caused by stress deformation, settlement, expansion and cracking of various structures. At the same time, it has excellent chemical corrosion resistance, and the product performance is not affected by solutions such as acids, alkalis, salts, and chlorine.

[0060] The prefabricated decoration structure of an underground chamber provided by the present utility model has the following advantages:

[0061] 1. The small curved decorative panels used for the wall and the top arch are spliced in multiple pieces, which can improve the installation efficiency of the curved decorative panels and prevent the deformation of the curved decorative panels; during the construction process, the position of the curved decorative panels can be adjusted flexibly, and it also has the advantages of convenient construction, efficient disassembly and assembly, so as to meet the use requirements.

[0062] 2. The prefabricated decoration structure adopts a simple assembly mode such as "keel support + precast slab", which greatly improves the decoration work efficiency, ensures the decoration quality, is green and environmentally friendly, and can be widely applied to decoration projects such as suspended ceilings and walls.

[0063] 3. The prefabricated decoration structure successfully avoids most of the difficult-to-control wet operation construction problems. In this application, pre-produced component parts are directly used, and on-site only anchoring, supporting, splicing, etc. are required, which greatly improves the construction accuracy, reduces the complexity of the construction process, shortens the construction time, and improves the construction efficiency and quality. Compared with traditional decoration, the biggest advantage of the prefabricated decoration structure is that it can improve the "dirty, messy and poor" environment at the construction site, effectively reduce environmental pollutions such as construction waste, dust and noise, improve the disassembly and assembly convenience of component parts, shorten the construction period, and reduce the maintenance cost.

[0064] The above are only the preferred implementation modes of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. An assembled decoration structure for an underground chamber, characterized in that It includes a metal decorative panel wall surface (1), a metal decorative panel ceiling (2) and a waterproof layer (4); The waterproof layer (4) is laid on both the top and the side of the chamber rock wall (3); outside the waterproof layer (4) on the side, the metal decorative panel wall surface (1) is assembled and installed; below the waterproof layer (4) on the top, the metal decorative panel ceiling (2) is assembled and installed; The decorative panels of the metal decorative panel wall surface (1) and the metal decorative panel ceiling (2) are all curved decorative panels assembled by small pieces.

2. The prefabricated decoration structure for underground chambers according to claim 1, characterized in that, The metal decorative panel wall surface (1) includes a first fixing piece (1-1), a leveling piece (1-2), a horizontal keel (1-3), a vertical keel (1-4), a wall surface metal decorative panel (1-5) and a first bolt (1-6); A plurality of the horizontal keels (1-3) are arranged in parallel from top to bottom and are located outside the waterproof layer (4) on the side; outside the plurality of the horizontal keels (1-3), a plurality of the vertical keels (1-4) arranged in parallel along the length direction of the chamber are welded and fixed, thereby forming a wall surface light steel keel framework; outside the vertical keels (1-4), a plurality of the wall surface metal decorative panels (1-5) are assembled and installed; Between the wall surface light steel keel framework and the waterproof layer (4) on the side, a plurality of the leveling pieces (1-2) are arranged; the outside of the leveling piece (1-2) is welded and fixed to the horizontal keel (1-3) of the wall surface light steel keel framework; the inside of the leveling piece (1-2) is welded with the first fixing piece (1-1), and the first fixing piece (1-1) is fixed to the side of the chamber rock wall (3) through the first bolt (1-6).

3. The prefabricated decoration structure for an underground chamber according to claim 2, wherein The metal decorative panel wall surface (1) further includes a first special screw (1-7); Between the wall surface metal decorative panel (1-5) and the vertical keel (1-4), they are installed and fixed through the first special screw (1-7).

4. The prefabricated decoration structure for underground chambers according to claim 2, characterized in that, The metal decorative panel ceiling (2) includes a second fixing piece (2-1), a vertical base frame (2-2), an arc-shaped longitudinal keel (2-3), an arched horizontal keel (2-4), a ceiling metal decorative panel (2-5) and a second bolt (2-6); A plurality of the arc-shaped longitudinal keels (2-3) are arranged along the width direction of the chamber and at different height positions and are located below the waterproof layer (4) on the top, and each of the arc-shaped longitudinal keels (2-3) is arranged to form an arch; below the plurality of the arc-shaped longitudinal keels (2-3), the arched horizontal keel (2-4) is fixedly installed, thereby forming a ceiling arc-shaped light steel keel framework; below the arched horizontal keel (2-4), a plurality of the ceiling metal decorative panels (2-5) are assembled and installed; Between the ceiling arc-shaped light steel keel framework and the waterproof layer (4) at the top, a plurality of the vertical base frames (2-2) are suspended and installed; the bottom of the vertical base frame (2-2) is fixedly welded to the arc-shaped longitudinal keel (2-3); the top of the vertical base frame (2-2) is welded with the second fixing member (2-1), and the second fixing member (2-1) is fixed to the top of the chamber rock wall (3) through the second bolt (2-6).

5. The prefabricated decoration structure for underground chambers according to claim 4, characterized in that, The metal decorative panel ceiling (2) further includes a second special screw (2-7); Between the ceiling metal decorative panel (2-5) and the arched transverse keel (2-4), they are installed and fixed through the second special screw (2-7).

6. The prefabricated decoration structure for an underground chamber according to claim 4, characterized in that, The metal decorative panel ceiling (2) further includes a special keel connecting member (2-8); Between the arc-shaped longitudinal keel (2-3) and the arched transverse keel (2-4), they are connected and fixed through the special keel connecting member (2-8).

7. The prefabricated decoration structure for an underground chamber according to claim 6, wherein The special keel connecting member (2-8) includes an L-shaped connecting member (2-81) and a U-shaped clamping member (2-82); The L-shaped connecting member (2-81) and the U-shaped clamping member (2-82) are arranged in pairs. The L-shaped connecting member (2-81) is arranged below the arc-shaped longitudinal keel (2-3) and is fixedly welded to the bottom of the arc-shaped longitudinal keel (2-3) for supporting the arc-shaped longitudinal keel (2-3); the U-shaped clamping member (2-82) is sleeved outside the arched transverse keel (2-4) for hanging the arched transverse keel (2-4); the U-shaped clamping member (2-82) and the L-shaped connecting member (2-81) are fixedly welded, thereby realizing the connection and fixation between the arc-shaped longitudinal keel (2-3) and the arched transverse keel (2-4).

8. The prefabricated decoration structure for underground chambers according to claim 4, characterized in that, The arched transverse keel (2-4) and the vertical keel (1-4) are welded to form an integral body.

9. The prefabricated decoration structure for underground chambers according to claim 4, wherein, The wall metal decorative panel (1-5) and the ceiling metal decorative panel (2-5) are made of any one of aluminum alloy single plates, galvanized steel plates, magnesium-aluminum curved panels and stainless steel plates.

10. The prefabricated decoration structure for underground chambers according to claim 1, wherein The waterproof layer (4) is made of a quick-setting rubber asphalt waterproof coating.

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