Cold region tunnel heat preservation waterproof structure

Abstract

The utility model relates to a cold region tunnel heat preservation waterproof structure which comprises a bottom plate, a waterproof heat preservation structure is arranged at the top of the bottom plate and comprises a supporting layer and a water-resisting layer, the supporting layer is fixedly installed on an arch wall above the bottom plate, the water-resisting layer is fixedly installed on the inner side of the supporting layer, and the water-resisting layer is fixedly installed on the outer side of the supporting layer. And a drainage pipe is fixedly mounted at the top of the water-resisting layer. According to the cold region tunnel heat preservation waterproof structure, structural safety and stability of a tunnel are kept through the tunnel inner layer of the supporting layer, and underground water is prevented from penetrating through the supporting layer to enter the tunnel through polyurethane foam plastic in the water-resisting layer; underground water in the water-resisting layer is discharged to the drainage blind pipe by matching with the drainage pipe, and finally the underground water is converged into the longitudinal drainage ditch of the tunnel and is discharged out of the tunnel, so that the internal structure of the tunnel cannot be damaged while an auxiliary waterproof effect is achieved through internal materials of the high polymer material layer, the civil engineering cloth, the thermal insulation layer and the fireproof layer; the purposes of heat preservation and water prevention are achieved for the interior of the tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of mountain tunnels, in particular to a cold zone tunnel thermal insulation and waterproof structure. Background Art

[0002] With the acceleration of infrastructure construction in my country, the pace of tunnel and underground space engineering construction has also been promoted. The mileage of tunnel construction has increased rapidly. Due to the extremely complex engineering geological conditions in my country, most of the tunnels are built underground or in mountains.

[0003] However, the environment and temperature of many tunnel construction are relatively low and humid, which makes it difficult for ordinary tunnel structures to be thermally insulated and waterproof. If an emergency occurs, the durability, stability and safety of the tunnel may be affected by frost damage or leakage. Therefore, a thermal insulation and waterproof structure for cold zone tunnels is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a thermal insulation and waterproof structure for cold-region tunnels, which has the advantages of thermal insulation and waterproofing of the interior of the tunnel, and solves the problem that the thermal insulation or waterproof structure of ordinary tunnels needs to be optimized.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cold region tunnel thermal insulation and waterproof structure, comprising a bottom plate, the top of which is provided with a waterproof and thermal insulation structure;

[0006] The waterproof and heat-insulating structure includes a supporting layer, a waterproof layer, a drainage pipe, a polymer material layer, a civil engineering cloth, a thermal insulation layer, a fireproof layer, a tunnel inner layer, a drainage blind pipe and a tunnel longitudinal drainage ditch. The arch wall above the bottom plate is fixedly installed with a supporting layer, a waterproof layer is arranged at the bottom of the supporting layer, a drainage pipe is fixedly installed on the top of the waterproof layer, a polymer material layer is fixedly installed at the bottom of the waterproof layer, a civil engineering cloth is fixedly installed on the inner side of the polymer material layer, a thermal insulation layer is fixedly installed on the inner side of the civil engineering cloth, a fireproof layer is fixedly installed on the inner side of the thermal insulation layer, a tunnel inner layer is fixedly installed on the inner side of the fireproof layer, a drainage blind pipe is arranged inside the bottom plate, and a tunnel longitudinal drainage ditch is arranged inside the bottom plate.

[0007] Furthermore, there are two drainage pipes, and the bottoms of the two drainage pipes are fixedly connected to the top of the polymer material layer.

[0008] Furthermore, the number of the drainage blind pipes is two, and the two drainage blind pipes are respectively located on the left and right sides of the longitudinal drainage ditch of the tunnel.

[0009] Furthermore, polyurethane foam plastic is arranged inside the waterproof layer, and the supporting layer is a sprayed concrete layer.

[0010] Furthermore, rigid polyurethane foam is arranged inside the polymer material layer, and a heat-insulating board is arranged inside the heat-insulating layer.

[0011] Furthermore, a fiber cement fireproof board is arranged inside the fireproof layer, and a fiber high-strength lightweight concrete is arranged inside the inner layer of the tunnel.

[0012] Beneficial Effects

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The thermal insulation and waterproof structure of the cold-region tunnel prevents deformation and damage of the surrounding rock through the supporting layer, ensures the structural safety and stability of the tunnel, prevents groundwater from passing through the supporting layer and entering the tunnel through the polyurethane foam plastic inside the waterproof layer, and then cooperates with the drainage pipe to drain the groundwater inside the waterproof layer to the drainage blind pipe and finally merge into the longitudinal drainage ditch of the tunnel and discharge it out of the tunnel. The fiber high-strength lightweight concrete inside the inner layer of the tunnel ensures the stability of the interior of the tunnel. Finally, the internal materials of the polymer material layer, civil cloth, thermal insulation layer and fireproof layer play auxiliary waterproofing while ensuring that the structure inside the tunnel will not be damaged by extreme weather, thereby achieving the purpose of thermal insulation and waterproofing of the interior of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0016] Figure 2 This is a front sectional structural schematic diagram of the utility model;

[0017] Figure 3 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1. Bottom plate; 2. Waterproof and thermal insulation structure; 201. Support layer; 202. Waterproof layer; 203. Drainage pipe; 204. Polymer material layer; 205. Civil cloth; 206. Insulation layer; 207. Fireproof layer; 208. Tunnel inner layer; 209. Drainage blind pipe; 210. Tunnel longitudinal drainage ditch. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3, a cold region tunnel insulation and waterproof structure, comprising a bottom plate 1, a waterproof insulation structure 2 is arranged on the top of the bottom plate 1;

[0021] The waterproof and heat-insulating structure 2 comprises a supporting layer 201, a waterproof layer 202, a drainage pipe 203, a polymer material layer 204, a civil cloth 205, a thermal insulation layer 206, a fireproof layer 207, a tunnel inner layer 208, a drainage blind pipe 209 and a tunnel longitudinal drainage ditch 210. The supporting layer 201 is fixedly installed on the arch wall above the bottom plate 1, the waterproof layer 202 is arranged at the bottom of the supporting layer 201, and the drainage pipe 203 is fixedly installed on the top of the waterproof layer 202. A polymer material layer 204 is fixedly installed at the bottom of the waterproof layer 202, a civil engineering cloth 205 is fixedly installed on the inner side of the polymer material layer 204, a thermal insulation layer 206 is fixedly installed on the inner side of the civil engineering cloth 205, a fireproof layer 207 is fixedly installed on the inner side of the thermal insulation layer 206, a tunnel inner layer 208 is fixedly installed on the inner side of the fireproof layer 207, a drainage blind pipe 209 is arranged inside the bottom plate 1, and a tunnel longitudinal drainage ditch 210 is arranged inside the bottom plate 1.

[0022] Specifically, Figure 3 As shown in the figure, polyurethane foam is a polymer synthetic material made of isocyanate and polyether as the main raw materials through polymerization reaction. It has excellent elasticity, softness, elongation and compression strength. In tunnel engineering, polyurethane foam can be used as a waterproof material and filling material to strengthen the surrounding rock and prevent collapse.

[0023] Specifically, Figure 2 As shown, the polymer material layer 204 rigid foam polyurethane is a high molecular polymer with a closed-cell structure, and has the advantages of excellent thermal insulation performance, light weight, high specific strength, and convenient construction. At the same time, it also has the characteristics of sound insulation, shockproof, electrical insulation, heat resistance, cold resistance, and solvent resistance.

[0024] Specifically, Figure 3 As shown, fiber cement fireproof board is a board made of cement as the basic material and adhesive, mineral fiber cement and other fibers as reinforcing materials, and is made through pulping, molding, curing and other processes. This board adopts advanced production technology in the production process, which makes it have very high strength and stability, as well as excellent fireproof performance and durability. In addition, fiber cement fireproof board also has excellent sound insulation and moisture-proof properties, which can effectively reduce noise in the tunnel and prevent moisture from eroding the tunnel structure.

[0025] Specifically, Figure 1As shown, there are three main types of insulation layer 206 structures that are widely used in cold-region tunnels: surface laying, that is, the insulation layer 206 is laid on the inner surface of the secondary lining. The Osakayama Highway Tunnel on National Highway 227 adopts this laying method: sandwich laying, that is, the insulation layer 206 is laid between the supporting layer 201 and the secondary lining. Most of the insulation layer 206 of cold-region highway tunnels in my country adopt this method: double-layer laying, that is, laying an insulation board between the supporting layer 201 and the secondary lining, and also laying insulation materials on the inner surface of the secondary lining. This method is used in Japan.

[0026] When implementing, follow these steps:

[0027] 1) First, the internal structure of the tunnel is reinforced by the support layer 201 and the tunnel inner layer 208;

[0028] 2) Then the interior of the tunnel is preliminarily waterproofed through the waterproof layer 202 and the drainage pipe 203;

[0029] 3) The polymer material layer 204 and the civil engineering cloth 205 play an auxiliary role in waterproofing and prevent the low temperature outside the tunnel from causing frostbite to the internal structure of the tunnel;

[0030] 4) Finally, the interior of the tunnel is insulated by the thermal insulation layer 206 and the fireproof layer 207 to prevent damage to the internal structure of the tunnel caused by extreme weather.

[0031] To sum up, the thermal insulation and waterproof structure of the cold zone tunnel prevents deformation and damage of the surrounding rock through the supporting layer 201, ensures the structural safety and stability of the tunnel, prevents groundwater from passing through the supporting layer 201 and entering the tunnel through the polyurethane foam plastic inside the waterproof layer 202, and then cooperates with the drainage pipe 203 to drain the groundwater inside the waterproof layer 202 to the drainage blind pipe 209 and finally merge into the tunnel longitudinal drainage ditch 210 and discharge out of the tunnel, ensures the stability of the tunnel interior through the fiber high-strength lightweight concrete inside the tunnel inner layer 208, and finally ensures that the internal structure of the tunnel will not be damaged by extreme weather through the internal materials of the polymer material layer 204, the civil cloth 205, the thermal insulation layer 206 and the fireproof layer 207 to assist in waterproofing while ensuring that the internal structure of the tunnel will not be damaged by extreme weather, thereby achieving the purpose of thermal insulation and waterproofing of the tunnel interior.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cold region tunnel insulation and waterproof structure, comprising a bottom plate (1), characterized in that: A waterproof and heat-insulating structure (2) is provided on the top of the base plate (1); The waterproof and heat-insulating structure (2) comprises a supporting layer (201), a waterproof layer (202), a drainage pipe (203), a polymer material layer (204), a civil cloth (205), a thermal insulation layer (206), a fireproof layer (207), a tunnel inner layer (208), a drainage blind pipe (209) and a tunnel longitudinal drainage ditch (210); the supporting layer (201) is fixedly installed on the arch wall above the bottom plate (1); the waterproof layer (202) is arranged at the bottom of the supporting layer (201); the drainage pipe (203) is fixedly installed on the top of the waterproof layer (202); A polymer material layer (204) is fixedly installed at the bottom of the waterproof layer (202), a civil engineering cloth (205) is fixedly installed on the inner side of the polymer material layer (204), a thermal insulation layer (206) is fixedly installed on the inner side of the civil engineering cloth (205), a fireproof layer (207) is fixedly installed on the inner side of the thermal insulation layer (206), a tunnel inner layer (208) is fixedly installed on the inner side of the fireproof layer (207), a drainage blind pipe (209) is arranged inside the bottom plate (1), and a tunnel longitudinal drainage ditch (210) is arranged inside the bottom plate (1).

2. The cold region tunnel insulation and waterproof structure according to claim 1, characterized in that: There are two drainage pipes (203), and the bottoms of the two drainage pipes (203) are fixedly connected to the top of the polymer material layer (204).

3. The cold region tunnel insulation and waterproof structure according to claim 1, characterized in that: The number of the drainage blind pipes (209) is two, and the two drainage blind pipes (209) are respectively located on the left and right sides of the tunnel longitudinal drainage ditch (210).

4. The cold region tunnel insulation and waterproof structure according to claim 1, characterized in that: Polyurethane foam plastic is arranged inside the waterproof layer (202), and the supporting layer (201) is a sprayed concrete layer.

5. The cold region tunnel insulation and waterproof structure according to claim 1, characterized in that: The polymer material layer (204) is provided with rigid foam polyurethane inside, and the thermal insulation layer (206) is provided with a thermal insulation board inside.

6. The cold region tunnel insulation and waterproof structure according to claim 1, characterized in that: The fireproof layer (207) is provided with a fiber cement fireproof board inside, and the tunnel inner layer (208) is provided with a fiber high-strength lightweight concrete inside.

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