Freezing Injury Prevention and Control Method, Equipment and Storage Medium for Entrance of Highway Tunnel in Cold Region

Abstract

The present invention discloses a method, device and storage medium for preventing and controlling freezing damage at the entrance of a cold-region highway tunnel, which are used for an air curtain system. The method includes: reserving an installation groove at a position of the tunnel portal close to the tunnel entrance; installing the air curtain system in the installation groove; acquiring the ambient temperature at the tunnel entrance and judging whether the ambient temperature meets a preset starting temperature. If so, starting the air curtain system, sucking air into the air box, and heating the air in the air box by using the heating device; judging whether the air in the air box meets a preset discharge temperature. If so, blowing out the air in the air box by using the air curtain machine to form an air curtain covering the entrance. By installing the air curtain system in the installation groove, the air curtain generated by the air curtain machine separates the inside and outside of the tunnel entrance, converts passive protection into active protection, improves the effect of preventing and controlling freezing damage, and fundamentally solves the problem of tunnel freezing damage.

Description

Technical Field

[0001] The present invention relates to the technical field of freeze damage prevention and control for highway tunnel entrances in cold regions, and particularly to a method, device, and storage medium for preventing and controlling freeze damage at the entrances of highway tunnels in cold regions. Background Art

[0002] Tunnel freeze damage refers to the freezing of water in cement and surrounding rocks inside tunnels in cold and severely cold regions, causing ice hanging on the tunnel arch, ice formation on the side walls, and lining cracking.

[0003] In related technologies, the heat insulation method is often used to prevent and control freeze damage in highway tunnels in cold regions. The heat insulation method is to set heat insulation materials on the lining surface or between the primary support and the secondary lining, so that the heat of the surrounding rock does not escape from the tunnel lining in winter, and the surface of the heat insulation material is kept above the freezing point, thereby preventing the occurrence of freeze damage.

[0004] However, with the method of only setting heat insulation materials on the lining surface or between the primary support and the secondary lining, the internal space of the tunnel is still in a cold environment, and the effect of freeze damage prevention and control is not good, and the problems of ice hanging on the tunnel arch, ice formation on the side walls, and lining cracking cannot be fundamentally solved. Summary of the Invention

[0005] The main purpose of the present invention is to provide a method, device, and storage medium for preventing and controlling freeze damage at the entrances of highway tunnels in cold regions, aiming to solve the technical problems in the prior art that with the method of only setting heat insulation materials on the lining surface or between the primary support and the secondary lining, the internal space of the tunnel is still in a cold environment, the effect of freeze damage prevention and control is not good, and the problems of ice hanging on the tunnel arch, ice formation on the side walls, and lining cracking cannot be fundamentally solved.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a method for preventing and controlling freeze damage at the entrance of a highway tunnel in a cold region, which is used for an air curtain system. The air curtain system includes an air box, a heating device, and an air curtain machine. The air curtain machine is communicated with the air box, and the air box is connected to the heating end of the heating device. The highway tunnel in the cold region includes a tunnel entrance and a tunnel portal. The method includes:

[0008] Reserving an installation groove at a position of the tunnel portal close to the tunnel entrance;

[0009] Installing the air curtain system in the installation groove;

[0010] Obtaining the ambient temperature at the tunnel entrance;

[0011] Judging whether the ambient temperature reaches a preset start temperature;

[0012] If so, start the air curtain system, suck air into the air box, and heat the air in the air box by using the heating device;

[0013] Determine whether the air in the air box reaches the preset discharge temperature;

[0014] If so, use the air curtain machine to blow out the air in the air box to form an air curtain covering the tunnel entrance.

[0015] Optionally, in the above method for preventing freezing damage at the entrance of a cold-region highway tunnel, the step of reserving an installation groove at a position of the tunnel portal near the tunnel entrance includes:

[0016] Preset a grooving position vertically on the outer side of the tunnel entrance;

[0017] Build the tunnel portal around the tunnel entrance, and form an installation groove with a shape matching the grooving position at the grooving position;

[0018] Wherein, the width of the bottom end of the installation groove is greater than the width of the top end of the grooving position, and the height of the grooving position is greater than or equal to the height of the entrance.

[0019] Optionally, in the above method for preventing freezing damage at the entrance of a cold-region highway tunnel, the step of installing an air curtain system in the installation groove includes:

[0020] Install a fixing structure on the groove side wall of the installation groove to form an installation position;

[0021] Install the air curtain machine at the installation position to complete the installation of the air curtain system.

[0022] Optionally, in the above method for preventing freezing damage at the entrance of a cold-region highway tunnel, the step of installing a fixing structure on the groove side wall of the installation groove to form an installation position includes:

[0023] Plant longitudinal steel bars in the groove wall of the installation groove;

[0024] Arrange transverse fixing bars on the longitudinal steel bars;

[0025] Use vertical connecting bars to connect the longitudinal steel bars and the transverse fixing bars to form the installation position.

[0026] Optionally, in the above method for preventing freezing damage at the entrance of a cold-region highway tunnel, the step of installing a fixing structure on the groove side wall of the installation groove to form an installation position includes:

[0027] When building the tunnel portal, reserve longitudinal steel bars at the end wall of the tunnel portal;

[0028] Arrange transverse fixing bars on the longitudinal steel bars;

[0029] Connect the longitudinal steel bars and the transverse fixing steel bars with vertical connecting bars to form the installation position.

[0030] Optionally, in the method for preventing freezing damage at the entrance of a cold-region highway tunnel described above, set the preset starting temperature to 0°C.

[0031] Optionally, in the method for preventing freezing damage at the entrance of a cold-region highway tunnel described above, determine the preset discharge temperature according to the preset starting temperature, where the preset discharge temperature is greater than the preset starting temperature, and the difference between the preset discharge temperature and the preset starting temperature is C, and 5°C ≤ C ≤ 10°C.

[0032] Optionally, in the method for preventing freezing damage at the entrance of a cold-region highway tunnel described above, the cold-region highway tunnel includes an arch ring. Before the step of installing the air curtain system in the installation groove, the method includes:

[0033] Install a protective member on the arch ring so that the protective member covers the top of the tunnel entrance and the air curtain system.

[0034] In a second aspect, the present invention provides a device for preventing freezing damage at the entrance of a cold-region highway tunnel, which is characterized in that it includes the air curtain system as described above. The device for preventing freezing damage at the entrance of a cold-region highway tunnel further includes a processor and a memory. A control program for the air curtain system is stored on the memory. When the control program for the air curtain system is executed by the processor, the method for preventing freezing damage at the entrance of a cold-region highway tunnel as described above is implemented.

[0035] In a third aspect, the present invention provides a computer-readable storage medium, which is characterized in that a computer program is stored on the storage medium. When the computer program is executed by one or more processors, the method for preventing freezing damage at the entrance of a cold-region highway tunnel as described above is implemented.

[0036] One or more technical solutions provided by the present invention may have the following advantages or at least achieve the following technical effects:

[0037] A method, device and storage medium for preventing and controlling freezing damage at the entrance of a cold-region highway tunnel proposed by the present invention. After reserving an installation groove in the tunnel portal, an air curtain system is installed in the installation groove. The air curtain system can also heat the air curtain so that the air curtain has a heat quantity higher than the ambient temperature. This enables the air in the tunnel to carry part of the heat when it contacts the air curtain, which is more conducive to heat preservation of the structures in the tunnel, preventing the generation of freezing damage in the tunnel. The air curtain system is conducive to maintenance and management, and is more conducive to ensuring the effect of preventing and controlling tunnel freezing damage. Moreover, the air curtain system is located at the air inlet of the tunnel portal, and the sheet-shaped air curtain generated by the air curtain machine covers the air inlet of the tunnel portal to separate the inside and outside of the tunnel portal. It converts the passive protection in the related art of only setting heat insulation materials on the lining surface or between the primary support and the secondary lining into an active protection of blocking the cold air outside the tunnel portal from entering the tunnel, avoiding the formation of freezing damage due to the entry of cold air into the tunnel, preventing the internal space of the tunnel from being in a cold environment, improving the effect of preventing and controlling freezing damage, and fundamentally solving the problems of ice hanging on the tunnel arch, ice formation on the side walls, and lining cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these provided drawings.

[0039] Figure 1 It is a schematic diagram of the overall process of the freezing damage prevention and control system for the entrance of a cold-region highway tunnel of the present invention;

[0040] Figure 2 It is a schematic diagram of the process of an embodiment of the freezing damage prevention and control system for the entrance of a cold-region highway tunnel of the present invention;

[0041] Figure 3 It is a schematic diagram of the overall structure of the freezing damage prevention and control system for the entrance of a cold-region highway tunnel of the present invention;

[0042] Figure 4 It is a schematic diagram of the structure of the end wall related to the present invention;

[0043] Figure 5 It is a schematic diagram of the structure of the air curtain machine related to the present invention;

[0044] Figure 6 It is a schematic diagram of the structure of the fixing structure related to the present invention;

[0045] Figure 7 It is a top view structural schematic diagram of the installation groove related to the present invention;

[0046] Figure 8Top view schematic diagram of the installation structure of the air curtain machine related to the present invention.

[0047] Label Name Label Name 100 Tunnel portal 200 Tunnel arch ring 300 Protective part 400 Air curtain machine 500 Installation groove 600 Fixing structure 610 Longitudinal implanted bar 620 Transverse fixing bar 630 Vertical connecting bar 700 Controller 410 Air outlet 800 Tunnel entrance 110 End wall

[0048] The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0049] To make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0050] It should be noted that

[0051] In the embodiments of the present invention, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0052] In the present invention, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent in such process, method, article or system. Without further limitation, the elements defined by the statement "include..." do not exclude the existence of additional identical elements in the process, method, article or system including such element. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B at the same time.

[0053] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements.

[0054] In the present invention, if there are descriptions involving "first", "second", etc., such descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature.

[0055] In the present invention, the use of suffixes such as "module", "component", "part", "member", or "unit" for representing elements is only for the convenience of explaining the present invention, and they have no specific meaning in themselves. Therefore, "module", "member", or "unit" can be used interchangeably.

[0056] For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Additionally, the technical solutions of each embodiment can be combined with each other, provided that it is based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0057] The inventive concept of the present invention will be further elaborated below in conjunction with some specific embodiments.

[0058] The present invention provides a method, device, and storage medium for preventing and controlling freezing damage at the entrance of a highway tunnel in cold regions.

[0059] Refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 8 , Figure 1 is a schematic diagram of the overall process of the freezing damage prevention and control system for the entrance of a highway tunnel in cold regions according to the present invention; Figure 3 is a schematic diagram of the overall structure of the freezing damage prevention and control system for the entrance of a highway tunnel in cold regions according to the present invention; Figure 4 is a schematic diagram of the structure of the end wall related to the present invention; Figure 5 is a schematic diagram of the structure of the air curtain machine related to the present invention; Figure 7 is a top view structural schematic diagram of the installation groove related to the present invention; Figure 8 is a top view installation structure schematic diagram of the air curtain machine related to the present invention.

[0060] In an embodiment of the present invention, as Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 8As shown in the figure, a method for preventing and controlling freeze damage at the entrance of a cold-region highway tunnel is used for an air curtain system. The air curtain system includes an air box, a heating device, and an air curtain machine 400. The air curtain machine 400 is connected to the air box, and the air box is connected to the heating end of the heating device. The cold-region highway tunnel includes a tunnel entrance 800 and a tunnel portal 100. The method includes:

[0061] S100: Reserve an installation groove at a position of the tunnel portal 100 close to the tunnel entrance 800;

[0062] S200: Install the air curtain system in the installation groove 500;

[0063] S300: Obtain the ambient temperature at the tunnel entrance 800;

[0064] S400: Determine whether the ambient temperature reaches a preset startup temperature;

[0065] S500: If so, start the air curtain system, suck air into the air box, and use the heating device to heat the air in the air box;

[0066] S600: Determine whether the air in the air box reaches a preset discharge temperature;

[0067] S700: If so, use the air curtain machine to blow out the air in the air box to form an air curtain covering the tunnel entrance 800.

[0068] For easy understanding, a specific embodiment is shown below:

[0069] During the construction of the tunnel portal 100, reserve an installation groove 500 at a position of the tunnel portal 100 close to the tunnel entrance 800 to facilitate embedding and installing the air curtain system in the installation groove 500 during subsequent construction.

[0070] After the air curtain system is installed, obtain the ambient temperature at the tunnel entrance 800 through a controller 700 and an ambient temperature measuring instrument. When the ambient temperature meets the preset startup temperature, start the air curtain machine 400 to form an air curtain covering the tunnel entrance 800 at the tunnel entrance 800.

[0071] Before the air curtain machine 400 blows out air from the air outlet 410 of the air curtain machine 400, a heating device in the air box connected to the air curtain machine 400 or a heating device directly connected to the air inlet of the air curtain machine 400 heats the air entering the air curtain machine 400 so that the air curtain blown out by the air curtain machine 400 meets the preset discharge temperature, further improving the heat preservation and heat insulation effect of the air curtain.

[0072] It can be understood that the tunnel arch ring 200 and the concrete pavement jointly enclose to form the tunnel entrance 800. A tunnel portal 100 is built around the periphery of the tunnel arch ring 200 to cover the outer periphery of the tunnel entrance 800. The tunnel portal 100 is an end wall 110 type portal. A protective member 300 is provided above the tunnel arch ring 200. The protective member 300 is a rain and snow shelter, and the rain and snow shelter is arc-shaped. An installation groove 500 is provided below the rain and snow shelter. The installation groove 500 is recessed from one side of the tunnel portal 100 along the extension direction of the tunnel in the tunnel portal 100 and the installation groove 500 is arranged vertically. A fixing structure 600 is provided on the groove wall of the installation groove 500. The air curtain machine 400 is arranged in the fixing structure 600 so that the air curtain machine 400 is embedded in the installation groove 500. The air outlet 410 of the air curtain machine 400 faces the tunnel entrance 800, and the air inlet of the air curtain machine 400 is communicated with an air box. A heating device is arranged in the air box. The air curtain machine 400 blows out the air heated by the air box from the air outlet 410 to form an air curtain covering the tunnel entrance 800. By forming the installation groove 500 at the tunnel portal 100 and installing the air curtain machine 400 with the air outlet 410 facing the tunnel entrance 800 in the installation groove 500, the air curtain machine 400 blows the heated air towards the tunnel entrance 800 to form an air curtain with a temperature at the tunnel entrance 800 through the air curtain machine 400. The air curtain covers the tunnel entrance 800, thereby separating the air inside the tunnel from the air outside the tunnel entrance 800 to insulate the interior of the tunnel. The structure of the freeze damage prevention system for the tunnel entrance 800 of the cold region highway tunnel is simple, which is beneficial to the subsequent maintenance of the freeze damage prevention system for the tunnel entrance 800 of the cold region highway tunnel. And the installation process is simple, improving the tunnel construction efficiency and reducing the freeze damage prevention cost.

[0073] Through the technical solution of the present invention, after reserving the installation groove 500 in the tunnel portal 100, an air curtain system is installed in the installation groove 500. The air curtain system can also heat the air curtain so that the air curtain has heat higher than the ambient temperature, enabling the air inside the tunnel to carry part of the heat when contacting the air curtain, which is more conducive to insulating the structure inside the tunnel and preventing freeze damage from occurring inside the tunnel. The air curtain system is conducive to maintenance and management, and is more conducive to ensuring the freeze damage prevention effect of the tunnel. Moreover, the air curtain system is located at the air inlet of the tunnel entrance 800, and the sheet-shaped air curtain generated by the air curtain machine 400 covers the air inlet of the tunnel entrance 800 to separate the inside and outside of the tunnel entrance 800, converting the passive protection of only setting heat insulation materials on the lining surface or between the primary support and the secondary lining in the related art into an active protection of blocking the cold air outside the tunnel entrance 800 from entering the tunnel, avoiding the formation of freeze damage due to the cold air entering the tunnel, preventing the internal space of the tunnel from being in a cold environment, improving the freeze damage prevention effect, and fundamentally solving the problems of ice hanging on the tunnel arch, ice formation on the side walls, and lining cracking.

[0074] In one embodiment, the number of the installation grooves 500 is two. The two installation grooves 500 are opposite to each other and arranged at intervals on both sides of the tunnel entrance 800. Air curtain machines 400 are arranged in both of the two installation grooves 500, and the air outlets 410 of the two air curtain machines 400 face each other.

[0075] It can be understood that when the air curtain machine 400 blows out air, since the intensity of the air curtain decreases as the distance from the air outlet 410 of the air curtain machine 400 increases, therefore, the air curtain machines 400 are respectively arranged on both sides of the tunnel entrance 800, and the air outlets 410 of the two air curtain machines 400 face each other, so as to increase the intensity of the air curtain covering the tunnel entrance 800, improve the tunnel heat preservation effect, and be more conducive to preventing and controlling the frost damage of the tunnel.

[0076] In one embodiment, the air outlet 410 of the air curtain machine 400 is narrow and long, and the width of the air outlet 410 of the air curtain machine 400 is A, where 5 cm ≤ A ≤ 10 cm.

[0077] Specifically, the air inlet of the air curtain machine 400 is located outside the installation groove 500, and the air outlets 410 of the two air curtain machines 400 blow against each other at a small angle to form an air curtain at the tunnel entrance 800. Since the air outlet 410 of the air curtain machine 400 is narrow and long, therefore, the air pressure of the air curtain blown out by the air curtain machine 400 is relatively large, and the air curtain separates the inside and outside of the tunnel entrance 800, preventing the cold air outside the tunnel entrance 800 from invading the tunnel interior and not affecting the normal passage of vehicles entering the tunnel.

[0078] In one embodiment, the depth direction of the installation groove 500 is consistent with the extension direction of the tunnel, and the depth of the installation groove 500 is C, where 40 cm ≤ C ≤ 80 cm.

[0079] In one embodiment, the air outlet 410 is inclined relative to the portal, and the included angle between the side of the air outlet 410 facing the tunnel entrance 800 and the portal is B, where 5° ≤ B ≤ 10°.

[0080] Since the included angle between the air outlet 410 of the air curtain machine 400 and the portal is B, where 5° ≤ B ≤ 10°, when the cold air outside the tunnel entrance 800 touches the air curtain, it prevents the air curtain mixed with the cold air from being brought into the tunnel, further improving the frost damage prevention and control effect of the tunnel.

[0081] In one embodiment, the end of the air curtain machine 400 provided with the air inlet is embedded in the installation groove 500, and the depth of the air curtain machine 400 embedded in the installation groove 500 is greater than or equal to the depth of the air curtain machine 400 not embedded in the installation groove 500.

[0082] Specifically, the height of the installation groove 500 is approximately the same as the top of the tunnel arch ring 200. Its width is about 1 m, slightly larger than the width of the air curtain machine 400. The depth of the installation groove 500 extending along the tunnel extension direction is about 40 - 80 cm, so that more than 1 / 2 of the air curtain machine 400 itself can be embedded in the installation groove 500, ensuring the stability of the air curtain machine 400 and improving the actual use effect of the air curtain machine 400.

[0083] In an embodiment of the present invention, the steps of reserving the installation groove 500 at the position of the tunnel portal 100 close to the tunnel entrance 800 include:

[0084] Q100: Preset a grooving position on the outside of the tunnel entrance 800 vertically;

[0085] Q200: Build the tunnel portal 100 around the tunnel entrance 800, and form an installation groove 500 with a shape matching the grooving position at the grooving position;

[0086] Among them, the bottom width of the installation groove 500 is greater than the top width of the grooving position, and the height of the grooving position is greater than or equal to the height of the entrance.

[0087] Specifically, there are reserved vertical installation grooves 500 on both sides of the tunnel portal 100, and its bottom is slightly wider than the upper part, which is convenient for bolt fixation of the bottom of the air curtain machine 400 to the concrete floor, that is, convenient for the installation of the air curtain machine 400.

[0088] In an embodiment of the present invention, the steps of installing the air curtain system in the installation groove 500 include:

[0089] W100: Install a fixing structure 600 on the groove side wall of the installation groove 500 to form an installation position;

[0090] W200: Install the air curtain machine 400 in the installation position to complete the installation of the air curtain system.

[0091] Continue to refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 8 ,and refer to Figure 2 and Figure 6 , Figure 2 is a schematic flow chart of an embodiment of the freeze damage prevention system at the entrance of a cold region highway tunnel of the present invention; Figure 6 is a schematic structural diagram of the fixing structure involved in the present invention.

[0092] In an embodiment, as Figures 2 to 8As shown, after the construction of the tunnel portal 100 is completed, in order to form the fixing structure 600, facilitate the installation of the air curtain machine 400, so that the air curtain machine 400 is in a relatively stable state, and ensure the formation effect of the air curtain, the steps of installing the fixing structure 600 on the groove side wall of the installation groove 500 to form an installation position include:

[0093] E100: implant longitudinal steel bars into the groove wall of the installation groove 500;

[0094] E200: arrange transverse fixing bars 620 on the longitudinal steel bars;

[0095] E300: use vertical connecting bars 630 to connect the longitudinal steel bars and the transverse fixing bars 620 to form an installation position.

[0096] The cold region highway tunnel includes a concrete road surface, the concrete road surface forms the bottom wall of the installation groove 500, and the bottom side of the air curtain machine 400 is installed on the concrete road surface.

[0097] Specifically, the vertical height of the air curtain machine 400 is slightly smaller than that of the air curtain installation groove 500, the body of the air curtain machine 400 is fixed by the fixing structure 600, and the bottom of the air curtain machine 400 is fixed to the concrete ground by bolts.

[0098] Continue to refer to Figures 3 to 8 , in an embodiment of the present invention, as Figures 3 to 8 shown, the installation groove 500 includes a bottom wall and a groove side wall surrounding the periphery of the bottom wall, and the fixing structure 600 includes: longitudinal implanted steel bars 610, the longitudinal implanted steel bars 610 are implanted and connected to the groove side wall of the installation groove 500; transverse fixing bars 620, the transverse fixing bars 620 are connected to the longitudinal implanted steel bars 610; and, vertical connecting bars 630, the longitudinal implanted steel bars 610 and the transverse fixing bars 620 are connected by vertical connecting bars 630; wherein, the longitudinal implanted steel bars 610, the transverse fixing bars 620 and the vertical connecting bars 630 enclose to form an installation position in the installation groove 500, and the air curtain machine 400 is installed in the installation position.

[0099] Specifically, the air curtain machine 400 can be vertically connected by a plurality of small air curtain machines, and the height of the small air curtain machine matches the vertical spacing of the longitudinal implanted steel bars 610 and the transverse fixing bars 620, which can reduce the influence of the fixing structure 600 on the air inlet and outlet of the air curtain machine 400.

[0100] In an embodiment, the steps of installing the fixing structure 600 on the groove side wall of the installation groove 500 to form an installation position include:

[0101] R100: when building the portal, reserve longitudinal steel bars at the end wall 110 of the portal;

[0102] R200: arrange transverse fixing bars 620 on the longitudinal steel bars;

[0103] R300: Connect the longitudinal reinforcement and the transverse fixing reinforcement 620 using the vertical connecting reinforcement 630 to form an installation position.

[0104] Specifically, the cold region highway tunnel includes an end wall 110. The fixing structure 600 includes: reserved longitudinal reinforcement disposed on the end wall 110, with the extending direction of the reserved longitudinal reinforcement being consistent with the depth direction of the installation groove 500; a transverse fixing reinforcement 620 connected to the reserved longitudinal reinforcement; and a vertical connecting reinforcement 630 connected between the reserved longitudinal reinforcement and the transverse fixing reinforcement 620. Among them, the reserved longitudinal reinforcement, the transverse fixing reinforcement 620, and the vertical connecting reinforcement 630 enclose an installation position in the installation groove 500, and the air curtain machine 400 is installed in the installation position.

[0105] The longitudinal implanted reinforcement 610 in the fixing device structure can be achieved by implanting reinforcement into the end wall 110 of the tunnel portal 100 or by reserving longitudinal reinforcement during the construction of the end wall 110 of the tunnel portal 100 to ensure the firmness of the longitudinal implanted reinforcement 610. The transverse fixing reinforcement 620 and the longitudinal implanted reinforcement 610 can be connected by welding or mechanical connection. The vertical connecting reinforcement 630 is connected to the transverse fixing reinforcement 620 and the longitudinal implanted reinforcement 610 in a welding form.

[0106] In one embodiment, the preset start temperature is set to 0°C.

[0107] Specifically, to save energy consumption, the air curtain machine 400 is connected to a controller 700, and the controller 700 is connected to an environmental tester. When the ambient temperature is lower than 0°C, the air curtain machine 400 automatically turns on.

[0108] In one embodiment, a preset discharge temperature is determined according to the preset start temperature; wherein, the preset discharge temperature is greater than the preset start temperature, and the difference between the preset discharge temperature and the preset start temperature is C, and 5°C ≤ C ≤ 10°C.

[0109] Specifically, to save energy consumption, the air curtain machine 400 can selectively have a heating function, that is, the sucked cold air is heated by 5 - 10°C inside the box body to improve the heat preservation effect of the air curtain on the tunnel.

[0110] In one embodiment, to prevent the air outlet 410 of the air curtain machine 400 from being covered by sundries, the cold region highway tunnel includes an arch ring. Before the step of installing the air curtain system in the installation groove 500, the method includes:

[0111] U100: Install a protective member 300 on the arch ring so that the protective member 300 covers the tunnel entrance 800 and the top of the air curtain system.

[0112] In addition, based on the same inventive concept, the present invention also provides a freeze damage prevention and control device for the entrance of a cold region highway tunnel, which is characterized in that it includes the air curtain system as described above. The freeze damage prevention and control device for the entrance of a cold region highway tunnel further includes a processor and a memory. A control program for the air curtain system is stored on the memory. When the control program for the air curtain system is executed by the processor, the freeze damage prevention and control method for the entrance of a cold region highway tunnel as described above is implemented.

[0113] For the specific structure of the air curtain system and the specific steps of the freeze damage prevention and control method for the entrance of a cold region highway tunnel, refer to the above embodiments. Since the freeze damage prevention and control device for the entrance of a cold region highway tunnel adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0114] In addition, based on the same inventive concept, the present invention also provides a computer-readable storage medium, which is characterized in that a computer program is stored on the storage medium. When the computer program is executed by one or more processors, the freeze damage prevention and control method for the entrance of a cold region highway tunnel as described above is implemented.

[0115] For the specific steps of the freeze damage prevention and control method for the entrance of a cold region highway tunnel, refer to the above embodiments. Since the computer-readable storage medium adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0116] It should be noted that the serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments. The above embodiments are only optional embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or directly or indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A method for preventing and controlling frost damage at the entrance of a highway tunnel in cold regions, characterized in that, The cold-region highway tunnel includes a tunnel entrance, a tunnel portal, and an arch ring. The method includes: Reserving an installation groove at a position of the tunnel portal close to the tunnel entrance; Installing an air curtain system in the installation groove. Wherein, the air curtain system includes an air box, a heating device, and an air curtain machine. The air curtain machine is communicated with the air box, and the air box is connected to the heating end of the heating device; Obtaining the ambient temperature at the tunnel entrance; Judging whether the ambient temperature reaches a preset starting temperature; If so, starting the air curtain system, sucking air into the air box, and heating the air in the air box by using the heating device; Judging whether the air in the air box reaches a preset discharge temperature; If so, blowing out the air in the air box by using the air curtain machine to form an air curtain covering the tunnel entrance; The step of reserving an installation groove at a position of the tunnel portal close to the tunnel entrance includes: Presetting a grooving position on the outer side of the tunnel entrance along the vertical direction; Constructing the tunnel portal around the tunnel entrance, and forming an installation groove with a shape matching the grooving position in the grooving position; Wherein, the width of the bottom end of the installation groove is greater than the width of the top end of the grooving position, and the height of the grooving position is greater than or equal to the height of the entrance; The step of installing an air curtain system in the installation groove includes: Installing a fixing structure on the groove side wall of the installation groove to form an installation position; Installing the air curtain machine in the installation position to complete the installation of the air curtain system; The step of installing a fixing structure on the groove side wall of the installation groove to form an installation position includes: Planting longitudinal steel bars on the groove wall of the installation groove; Arranging transverse fixing bars on the longitudinal steel bars; Connecting the longitudinal steel bars and the transverse fixing bars by using vertical connecting bars to form the installation position; The step of installing a fixing structure on the groove side wall of the installation groove to form an installation position includes: Reserving longitudinal steel bars at the end wall of the portal when constructing the portal; Arranging transverse fixing bars on the longitudinal steel bars; Connecting the longitudinal steel bars and the transverse fixing bars by using vertical connecting bars to form the installation position; Before the step of installing an air curtain system in the installation groove, the method includes: Installing a protective member on the arch ring so that the protective member covers the top of the tunnel entrance and the air curtain system.

2. The method for preventing and controlling freezing damage at the entrance of a cold-region highway tunnel according to claim 1, wherein, Setting the preset starting temperature to 0°C.

3. The method for preventing and controlling freeze damage at the entrance of cold-region highway tunnels according to claim 1, characterized in that, Determining the preset discharge temperature according to the preset starting temperature, wherein the preset discharge temperature is greater than the preset starting temperature, and the difference between the preset discharge temperature and the preset starting temperature is C, 5°C ≤ C ≤ 10°C.

4. A freeze injury prevention and control device for the entrance of a highway tunnel in cold regions, characterized in that, Including the air curtain system according to any one of claims 1 to 3, the freeze damage prevention device for the cold-region highway tunnel entrance further includes a processor and a memory. A control program for the air curtain system is stored on the memory. When the control program for the air curtain system is executed by the processor, the freeze damage prevention method for the cold-region highway tunnel entrance according to any one of claims 1 to 3 is realized.

5. A computer-readable storage medium, characterized in that, A computer program is stored on the storage medium, and when the computer program is executed by one or more processors, it implements the method for preventing and controlling freezing damage at the entrance of a cold-region highway tunnel as described in any one of claims 1 to 3.

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