Basalt composite tunnel sleeve lining structure

Abstract

The utility model relates to the technical field of tunnel fireproof sleeve lining structures, in particular to a basalt composite tunnel sleeve lining structure. The device comprises a fireproof sleeve lining and a plurality of limiting assemblies fixedly connected with the inner wall of the tunnel, each limiting assembly is correspondingly matched with one side edge of the fireproof sleeve lining in a limiting mode, and the fireproof sleeve lining is fixedly connected with the inner wall of the tunnel through a connecting piece. The fireproof sleeve lining is sequentially provided with a rock wool layer, a bonding layer and a basalt fiber profile plate from inside to outside, and the basalt fiber profile plate is tightly attached to the interior of the tunnel in a matched mode. According to the tunnel fireproof lining structure, the phenomena of fireproof lining stripping and falling caused by water seepage of a lining main body structure are solved, the problem that the later maintenance cost of a traditional spraying type tunnel fireproof lining is high is effectively solved, the construction period is effectively shortened, and efficient construction of a tunnel fireproof structure is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel fireproof lining structures, in particular to a basalt composite tunnel lining structure. Background Art

[0002] As an important part of transportation infrastructure, the safety performance of tunnels, especially their fire resistance, is of vital importance. Traditional tunnel fireproofing materials may contain substances that are harmful to the environment during the processing process, such as halogen compounds (such as flame retardants containing chlorine or bromine), which may cause pollution to the environment during the production and waste disposal stages. In addition, the fireproof coating structure is prone to weakening of bonding strength under the long-term influence of the humid environment or local water seepage in the tunnel. Therefore, the coating and the lining surface will separate under the vibration caused by the vehicle, and eventually the entire fireproof lining structure will be damaged. At the same time, it is difficult to ensure uniform coating thickness during the spraying process of the fireproof coating structure, and it is easy to cause defects in the fireproof coating process, which is prone to major safety hazards in the event of a fire. Therefore, a fireproof lining structure composed of a composite of basalt fiber profiles and rock wool that can meet the requirements of tunnel fire protection engineering, which is lightweight, high-strength, environmentally friendly, easy to construct, durable, impermeable, and high-temperature resistant is needed to solve the above problems. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a basalt composite tunnel fireproof lining structure which is convenient to construct, has strong durability, and has both anti-seepage and high-temperature resistance effects.

[0004] The technical solution adopted by the present invention is: the present invention includes a fireproof lining and a plurality of limiting components fixedly connected to the inner wall of the tunnel, each of the limiting components corresponds to a side limit of the fireproof lining, the fireproof lining is fixedly connected to the inner wall of the tunnel through a connecting piece, and the fireproof lining is sequentially provided with a rock wool layer, an adhesive layer and a basalt fiber profile plate from the inside to the outside, and the basalt fiber profile plate is tightly fitted with the inside of the tunnel.

[0005] Furthermore, the limiting assembly includes a fixed plate, a limiting plate arranged in the middle of the fixed plate, and a number of expansion screws. A number of limiting holes are formed on the fixed plate. Each of the expansion screws passes through the corresponding limiting hole and is fixedly connected to the inner wall of the tunnel. A compression space is formed between the limiting plate and the fixed plate to be pressed together with the edge of the fireproof sleeve.

[0006] Furthermore, the limiting plate is in an inverted "L" shape.

[0007] Furthermore, the basalt fiber profile plate is formed by interweaving a plurality of transverse basalt fibers and a plurality of longitudinal basalt fibers.

[0008] Furthermore, the rock wool layer, the adhesive layer and the basalt fiber profile plate are pressed and formed by laminating equipment.

[0009] Furthermore, a waterproof layer is formed on both sides of the fireproof lining.

[0010] The beneficial effects of the utility model are as follows: since the utility model adopts a multi-layer fireproof lining structure, the basalt fiber profile plate has good mechanical properties and waterproofness, and serves as a supporting force structure for the fireproof lining, preventing the influence of tunnel water seepage on the bonding performance of the rock wool layer, and effectively preventing the damage of the bonding layer to the tunnel water seepage while bearing the weight of the rock wool, thereby solving the problem of peeling and falling off of the fireproof lining caused by water seepage in the main lining structure, and effectively avoiding the problem of high maintenance cost of traditional spray-type tunnel fireproof lining;

[0011] The use of fireproof linings in combination with limiting components as tunnel fireproof structures solves the problems of spray-type fireproof coatings, tedious early construction, and complex procedures, effectively shortens the construction period, and achieves efficient construction of tunnel fireproof structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 It is a cross-sectional view of the fireproof lining of the utility model;

[0014] Figure 3 It is a structural diagram of the limit assembly of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the fixing plate and the limiting plate of the utility model.

[0016] In the figure: 1. Fireproof lining; 11. Rock wool layer; 12. Adhesive layer; 13. Basalt fiber profile board; 2. Snap-on assembly; 21. Fixing plate; 22. Limiting plate; 23. Expansion screw; 3. Tunnel inner wall; 4. Waterproof layer. DETAILED DESCRIPTION

[0017] like Figures 1 to 4As shown, in this embodiment, the utility model includes a fireproof lining 1 and several limiting components 2 fixedly connected to the inner wall 3 of the tunnel, each of the limiting components 2 corresponds to a side limit fit of the fireproof lining 1, and the fireproof lining 1 is fixedly connected to the inner wall 3 of the tunnel through a connecting piece, and the fireproof lining 1 is provided with a rock wool layer 11, an adhesive layer 12 and a basalt fiber profile plate 13 from the inside to the outside, and the basalt fiber profile plate 13 is tightly matched with the inner wall 3 of the tunnel, and the connecting piece can be an anchor rod. The fireproof lining 1 has a multi-layer structure, and the top of the fireproof lining 1 is arc-shaped and tightly fixed to the top of the tunnel. The two sides of the fireproof lining 1 are vertical surfaces and tightly attached to the two side surfaces of the tunnel. The middle part of the fireproof lining 1 is pressed on the inner wall 3 of the tunnel by multiple groups of anchor rods, which improves the stability during use, and the basalt fiber profile plate 13 is used as the supporting force structure of the refractory rock wool layer 11. At the same time, the basalt fiber profile plate 13 has good waterproof performance.

[0018] The rock wool layer 11 is primarily made from basalt, dolomite, slag, and coke. The raw materials are mixed in a specific ratio of basalt: dolomite: slag: coke = 70:25:20:23 by weight. In the event of a fire, the basalt rock wool has the advantage of low thermal conductivity, effectively preventing the spread of fire, reducing damage to the tunnel's main structure from high temperatures, and reducing heat transfer to the tunnel's main structure and surrounding environment. This protects the concrete structure from high-temperature damage and prevents premature collapse of the tunnel's concrete structure.

[0019] In this embodiment, the limiting assembly 2 includes a fixing plate 21, a limiting plate 22 arranged in the middle of the fixing plate 21, and a plurality of expansion screws 23. The fixing plate 21 is formed with a plurality of limiting holes 24. Each of the expansion screws 23 passes through the corresponding limiting hole 24 and is fixedly connected to the inner wall 3 of the tunnel. A pressing space is formed between the limiting plate 22 and the fixing plate 21 to be tightly fitted with the edge of the fireproof lining 1. The limiting plate 22 and the fixing plate 21 are integrally formed. The height of the limiting plate 22 with an inverted "L"-shaped structure is greater than the thickness of the fireproof lining 1. The limiting space formed by the limiting plate 22 and the fixing plate 21 is engaged and limited to the fireproof lining 1. The installation method is simple and fast, which reduces the difficulty of installation. Before installing the limiting assembly 2, the inner wall of the tunnel is leveled, and the hole position of the expansion screw 23 is calibrated on the inner wall 3 of the tunnel to facilitate the installation and positioning of the fixing plate 21.

[0020] In this embodiment, the limiting plate 22 is in an inverted "L" shape.

[0021] In this embodiment, the basalt fiber profile plate 13 is formed by interweaving a plurality of transverse basalt fibers and a plurality of longitudinal basalt fibers. The profile plate structure formed by interweaving a plurality of transverse basalt fibers and a plurality of longitudinal basalt fibers enables the basalt fiber profile plate 13, which serves as the load-bearing structure of the rock wool layer 11, to have better mechanical properties. At the same time, the thickness ratio of the basalt fiber profile plate and the rock wool layer is 2:3, and the supporting effect is stable and effective.

[0022] In this embodiment, the rock wool layer 11, the bonding layer 12 and the basalt fiber profile plate 13 are pressed and formed by a laminating device, and the gap between the rock wool layer 11 and the basalt fiber profile plate 13 is minimized as much as possible. Under the action of the bonding layer 12, the rock wool layer 11 is more closely attached to the basalt and is not easy to separate, which effectively avoids debonding of the bonding surface between the rock wool layer 11 and the basalt fiber profile plate 13 when water seeps into the tunnel.

[0023] In this embodiment, a waterproof layer 4 is formed on both sides of the fireproof lining 1. The waterproof layer 4 is a waterproof glue with good hydrophobicity to prevent the rock wool layer 11 and the basalt fiber profile board 13 from being debonded when the side connection of the waterproof layer 4 is in the tunnel and water seepage occurs.

[0024] The working principle of this utility model:

[0025] The inner wall of the secondary lining of the tunnel to be constructed is cleaned, dried, and smoothed with mortar to ensure that the basalt fiber profile plate 13 of the fireproof lining 1 is in flat contact with the surface of the secondary lining; the design position is calibrated and laid out, and mounting holes are drilled on the inner wall of the tunnel secondary lining; the fixing plate 21 is fixedly installed in the tunnel inner wall 3 and the opened mounting holes by multiple sets of expansion screws 23, and the two ends of the fireproof lining 1 are respectively limited in the compression space of the limiting component 2, and the basalt fiber profile of the fireproof lining 1 and the tunnel secondary lining are fixed together; finally, a waterproof layer 4 is applied to both sides of the fireproof lining 1.

[0026] Although the embodiments of the present invention are described with practical solutions, they do not limit the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A basalt composite tunnel lining structure, characterized by: The invention comprises a fireproof lining (1) and a plurality of limiting components (2) fixedly connected to the inner wall (3) of a tunnel, wherein each limiting component (2) corresponds to a side edge of the fireproof lining (1) and is fixedly connected to the inner wall (3) of the tunnel via a connecting piece. The fireproof lining (1) is provided with a rock wool layer (11), an adhesive layer (12) and a basalt fiber profile plate (13) in sequence from the inside to the outside, and the basalt fiber profile plate (13) is tightly fitted with the inner wall (3) of the tunnel.

2. The basalt composite tunnel lining structure according to claim 1, characterized in that: The limiting assembly (2) includes a fixing plate (21), a limiting plate (22) arranged in the middle of the fixing plate (21), and a plurality of expansion screws (23). The fixing plate (21) is formed with a plurality of limiting holes (24). Each expansion screw (23) passes through a corresponding limiting hole (24) and is fixedly connected to the inner wall (3) of the tunnel. A pressing space is formed between the limiting plate (22) and the fixing plate (21) to be pressed against the edge of the fireproof lining (1).

3. The basalt composite tunnel lining structure according to claim 2, characterized in that: The limiting plate (22) is in an inverted "L" shape.

4. The basalt composite tunnel lining structure according to claim 1, characterized in that: The rock wool layer (11), the bonding layer (12), and the basalt fiber profile plate (13) are pressed and formed by laminating equipment.

5. The basalt composite tunnel lining structure according to claim 1, characterized in that: Waterproof layers (4) are formed on both sides of the fireproof lining (1).

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