Tunnel spraying maintenance system

Abstract

The invention provides a tunnel spraying maintenance system, and belongs to the technical field of railway and highway tunnel construction, the tunnel spraying maintenance system comprises an embedded component, the embedded component is embedded in the top of a tunnel along with the shape, the two ends of the embedded component in the length direction are respectively provided with an end maintenance mechanism, and the middle of the embedded component in the length direction is provided with a middle maintenance mechanism; the end maintenance mechanism comprises an end connecting assembly and an end spraying assembly, and the end spraying assembly is arranged at the end of the embedded component through the end connecting assembly; the middle maintenance mechanism comprises a middle connecting assembly and a middle spraying assembly, and the middle spraying assembly is arranged in the middle of the embedded component in the length direction through the middle connecting assembly. According to the tunnel spraying maintenance system, the end spraying assemblies and the middle spraying assemblies are used for maintaining the side walls and the vault of the tunnel, automatic maintenance of different areas of the tunnel can be achieved, human interference factors are eliminated, the maintenance effect is guaranteed, time and labor are saved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of railway and highway tunnel construction, and more specifically, relates to a tunnel spraying maintenance system. Background Art

[0002] At present, the construction industry is transforming towards standardization, quality and efficiency. The design speed of high-speed railways is constantly increasing. The waterproofing system of the tunnel main structure has high requirements, and the waterproofing requirements of the concrete itself are also high. Cracks must not appear on the concrete surface and secondary repairs are not allowed. Therefore, the maintenance of concrete in the tunnel cavity is particularly important.

[0003] In the construction, the continuous use of new tools and equipment to improve labor efficiency, construction quality, safety and efficiency is the development trend of the future construction industry. The traditional tunnel maintenance system is subject to great human interference, the maintenance effect cannot be guaranteed, and it is time-consuming and labor-intensive. Summary of the invention

[0004] The purpose of the present invention is to provide a tunnel spraying maintenance system, aiming to solve the problems of traditional tunnel maintenance system, which is subject to great human interference factors, the maintenance effect cannot be guaranteed, and it is time-consuming and labor-intensive.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a tunnel spray maintenance system, comprising an embedded component, the embedded component is embedded in the top of the tunnel and the length direction of the embedded component is perpendicular to the length direction of the tunnel, the two ends of the embedded component in the length direction are respectively provided with end maintenance mechanisms, and the middle part of the embedded component in the length direction is provided with a middle maintenance mechanism; The end maintenance mechanism includes an end connection assembly and an end spray assembly, wherein the end spray assembly is arranged at the end of the embedded component through the end connection assembly, and the end spray assembly is used to maintain the concrete within the side wall range; The middle maintenance mechanism includes a middle connection assembly and a middle spray assembly. The middle spray assembly is arranged at the middle of the length direction of the embedded component through the middle connection assembly. The middle spray assembly is used to maintain concrete within the range of the arch.

[0006] In a possible implementation, the embedded component includes a U-shaped steel, which is arranged in a conformal manner at the top of the tunnel, the length direction of the U-shaped steel is perpendicular to the length direction of the tunnel, the U-shaped steel has a downward opening channel, and the upper end surface of the U-shaped steel is provided with a plurality of T-shaped embedded parts at intervals along the length direction, and the plurality of T-shaped embedded parts are embedded in the top of the tunnel, the two end connection components are respectively arranged at the two ends of the opening channel, and the middle connection component is arranged in the middle of the opening channel.

[0007] In a possible implementation, there are multiple U-shaped steels, which are arranged at intervals along the length direction of the tunnel, and connecting flat steels are respectively welded at both ends of two adjacent U-shaped steels.

[0008] In a possible implementation, the end connection assembly includes an end connection piece and an end connection bolt, the lower end of the end connection piece is connected to a transversely arranged end sliding assembly, the end spray assembly is transversely arranged on one side of the end sliding assembly, the nut end of the end connection bolt is clamped in the end of the open groove, and the screw rod of the end connection bolt passes downward through the upper end of the end connection piece and is locked by the nut thread.

[0009] In a possible implementation, the end sliding assembly includes an end transverse rail and an end mounting plate, the upper and lower ends of the end transverse rail are both provided with first transverse slides, the upper part of the end mounting plate is provided with two groups of first pulleys from top to bottom, the two groups of first pulleys are respectively slidably arranged on the two first transverse slides, and the end spray assembly is arranged at the lower part of the end mounting plate.

[0010] In a possible implementation, the end spray assembly includes a plurality of first spray pipes and a first connecting pipe, the plurality of first spray pipes are sequentially installed on the outer end surface of the end mounting plate from top to bottom, the first spray pipes are arranged along the length direction of the tunnel and have a plurality of spray holes toward the outside, and the first connecting pipe is longitudinally arranged and connects the plurality of first spray pipes from bottom to top.

[0011] In a possible implementation, the middle connecting assembly includes a middle connecting piece and a middle connecting bolt, the lower end of the middle connecting piece is connected to a transversely arranged middle sliding assembly, the middle spray assembly is transversely arranged at the upper end of the middle sliding assembly, the nut end of the middle connecting bolt is clamped in the middle of the open groove, and the screw rod of the middle connecting bolt passes downward through the upper end of the middle connecting piece and is locked by the nut thread.

[0012] In a possible implementation, the central sliding assembly includes a central transverse rail and a central mounting plate, second transverse slides are provided on both sides of the central transverse rail, two groups of second pulleys are provided on the left and right sides of the lower end of the central mounting plate, the two groups of second pulleys are respectively slidably provided on the two second transverse slides, and the central spray assembly is provided at the upper end of the central mounting plate.

[0013] In a possible implementation, the central spray assembly includes two second spray pipes, which are installed on the upper end surface of the central mounting plate on the left and right sides. The second spray pipes are arranged along the length direction of the tunnel and have multiple spray holes on the upper side.

[0014] In a possible implementation, the tunnel spray maintenance system also includes a surface temperature measuring element and an inner temperature measuring element. The surface temperature measuring element is attached to the surface layer of the tunnel concrete and is used to measure the temperature of the surface layer of the tunnel concrete. The inner temperature measuring element is buried in the inner layer of the tunnel concrete and is used to measure the temperature of the inner layer of the tunnel concrete.

[0015] The beneficial effect of a tunnel spraying maintenance system provided by the present invention is that: compared with the prior art, the embedded component is embedded in the top of the tunnel in a conformal manner and the length direction of the embedded component is perpendicular to the length direction of the tunnel. The two ends of the embedded component are respectively connected to the end spraying assembly through the end connecting assembly, and the middle of the embedded component is connected to the middle spraying assembly through the middle connecting assembly. The two end spraying assemblies respectively maintain the two side walls of the tunnel, and the middle spraying assembly maintains the arch of the tunnel. The tunnel spraying maintenance system provided by the present invention utilizes the end spraying assembly and the middle spraying assembly to maintain the side walls and arch of the tunnel respectively, and can realize automatic maintenance of different areas of the tunnel, eliminate the factors of human interference, ensure the maintenance effect, save time and labor, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A state diagram of the embedded component provided by the present invention being arranged in a tunnel; Figure 2 A front view of a tunnel spraying maintenance system provided by an embodiment of the present invention; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 for Figure 2 A partial enlarged view of point B in the middle; Figure 5 A side view of a tunnel spraying maintenance system provided by an embodiment of the present invention; Figure 6 for Figure 5 A local enlarged view of point C in the figure.

[0018] In the figure: 100, embedded components; 110, U-shaped steel; 111, open channel; 112, open flange; 120, T-shaped embedded parts; 130, connecting flat steel; 200, end maintenance mechanism; 210, end connecting bolts; 220, end connecting piece; 230, end transverse rail; 231, first transverse slide; 240, end mounting plate; 241, first pulley; 250, first spray pipe; 260, first connecting pipe; 300, middle maintenance mechanism; 310, middle connecting bolts; 320, middle connecting piece; 330, middle transverse rail; 331, second transverse slide; 340, middle mounting plate; 341, second pulley; 350, second spray pipe. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] Unless explicitly defined otherwise, the use of terms such as "first," "second," or "third," etc., are intended to distinguish different objects rather than to describe a specific order.

[0021] Unless otherwise expressly defined, directional words such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so they cannot be understood as limiting the specific scope of protection of the present invention.

[0022] See also Figures 1 to 6Now, a tunnel spraying maintenance system provided by the present invention is described. A tunnel spraying maintenance system includes an embedded component 100, which is embedded in the top of the tunnel and the length direction of the embedded component 100 is perpendicular to the length direction of the tunnel. The two ends of the embedded component 100 in the length direction are respectively provided with end maintenance mechanisms 200, and the middle part of the embedded component 100 in the length direction is provided with a middle maintenance mechanism 300; the end maintenance mechanism 200 includes an end connection assembly and an end spray assembly, and the end spray assembly is arranged at the end of the embedded component 100 through the end connection assembly, and the end spray assembly is used to maintain the concrete within the side wall range; the middle maintenance mechanism 300 includes a middle connection assembly and a middle spray assembly, and the middle spray assembly is arranged at the middle part of the length direction of the embedded component 100 through the middle connection assembly, and the middle spray assembly is used to maintain the concrete within the range of the vault.

[0023] Compared with the prior art, the present invention provides a tunnel spray maintenance system in which the embedded component 100 is embedded in the top of the tunnel and the length direction of the embedded component 100 is perpendicular to the length direction of the tunnel. The two ends of the embedded component 100 are connected to the end spray assemblies through the end connection assemblies, and the middle of the embedded component 100 is connected to the middle spray assembly through the middle connection assembly. The two end spray assemblies respectively maintain the two side walls of the tunnel, and the middle spray assembly maintains the arch of the tunnel. The present invention provides a tunnel spray maintenance system, which utilizes the end spray assembly and the middle spray assembly to maintain the side walls and arch of the tunnel, respectively, and can realize automatic maintenance of different areas of the tunnel, eliminate the factors of human interference, ensure the maintenance effect, save time and labor, and improve production efficiency.

[0024] In some embodiments, see Figure 2 and Figure 5 The embedded component 100 includes a U-shaped steel 110, which is arranged in a conformal manner at the top of the tunnel. The length direction of the U-shaped steel 110 is perpendicular to the length direction of the tunnel, and the U-shaped steel 110 has a downward opening channel 111. The opening channel 111 of the U-shaped steel 110 faces downward, and is bent upward in the middle to form a structure conformal to the arch of the tunnel. A plurality of T-shaped embedded parts 120 are arranged at intervals on the upper end surface of the U-shaped steel 110 along the length direction. The plurality of T-shaped embedded parts 120 are embedded in the top of the tunnel, and two end connection components are respectively arranged at the two ends of the opening channel 111, and the middle connection component is arranged in the middle of the opening channel 111. The T-shaped embedded part 120 is a T-nail, the lower end of which is welded to the side of the U-shaped steel 110 away from the opening channel 111. The U-shaped steel 110 is embedded in place before concrete pouring by utilizing the electrified embedded groove of the tunnel vault. After the concrete pouring is completed, the T-nail can stably set the U-shaped steel 110 on the tunnel vault.

[0025] See also Figure 5There are multiple U-shaped steels 110, which are arranged at intervals along the length direction of the tunnel, and connecting flat steels 130 are welded at both ends of two adjacent U-shaped steels 110. After welding two adjacent U-shaped steels 110 and two connecting flat steels 130, a stable frame structure is formed, which can improve the overall structural strength. Among them, the two ends of the connecting flat steel 130 are welded to the upper end surface of the U-shaped steel 110 and buried in the concrete. While improving the structural strength of the U-shaped steel 110, the connecting flat steel 130 can also be hidden inside the concrete to reduce the risk of rust.

[0026] See also Figure 2 and Figure 3 The end connection assembly includes an end connection piece 220 and an end connection bolt 210. The lower end of the end connection piece 220 is connected to a transversely arranged end sliding assembly. The end spray assembly is transversely arranged on one side of the end sliding assembly. The nut end of the end connection bolt 210 is clamped on the end of the open groove 111. The screw rod of the end connection bolt 210 passes downward through the upper end of the end connection piece 220 and is locked by the nut thread.

[0027] In this embodiment, the end connector 220 is a U-shaped connector with an opening facing inward, and the U-shaped connector includes an upper horizontal plate, a lower horizontal plate, and a longitudinal connecting plate. A through hole is provided on the upper horizontal plate, and the screw of the end connecting bolt 210 passes through the through hole longitudinally and is locked by a nut thread. In order to increase the stability of the connection, a rubber anti-slip gasket is provided between the upper horizontal plate and the open channel 111, and a double nut is also used.

[0028] Preferably, the port of the open channel 111 has an open flange 112 bent toward each other, the width of the open channel 111 is a, and the gap width between the two open flanges 112 is b. The width of the opposite sides of the nut of the end connection bolt 210 is c, and the diagonal width of the nut of the end connection bolt 210 is d. Among them, c<b, ensuring that the nut of the end connection bolt 210 can enter the open channel 111 from top to bottom through the open flange 112; a>d>b, ensuring that the nut of the end connection bolt 210 that enters the open channel 111 can be stuck in the open channel 111 after rotating 90° and will not fall out from between the two open flanges 112.

[0029] See also Figure 3 The end sliding assembly includes an end transverse rail 230 and an end mounting plate 240. The upper and lower ends of the end transverse rail 230 are both provided with first transverse slideways 231. Two groups of first pulleys 241 are provided from top to bottom on the upper part of the end mounting plate 240. The two groups of first pulleys 241 are respectively slidably arranged on the two first transverse slideways 231. The end spray assembly is arranged at the lower part of the end mounting plate 240.

[0030] In this embodiment, the end mounting plate 240 is connected to the outer end of the lower end horizontal plate by a plurality of hexagon socket screws, and the first horizontal slideways 231 at the upper and lower ends of the end horizontal rail 230 are arranged along the length direction thereof, and the cross section of the first horizontal slideway 231 is an arc groove structure, which can increase the contact area between the first pulley 241 and the bottom of the groove of the first horizontal slideway 231, thereby reducing the shaking of the first pulley 241 when sliding. The first pulley 241 is a rubber wheel, which can increase the friction between it and the bottom of the groove of the first horizontal slideway 231.

[0031] A plurality of first transverse slideways 231 are connected in sequence to form an outer slideway extending along the length direction of the tunnel, and the end spray assembly slides along the outer slideway to complete the maintenance work on the deep area of ​​the inner wall of the tunnel. The opposite ends of two adjacent first transverse slideways 231 are connected to each other and are located in the middle of the two U-shaped connecting frames.

[0032] See also Figure 2 and Figure 5 The end spray assembly includes a plurality of first spray pipes 250 and a first connecting pipe 260. The plurality of first spray pipes 250 are sequentially installed on the outer end surface of the end mounting plate 240 from top to bottom. The first spray pipes 250 are arranged along the length direction of the tunnel and have a plurality of spray holes opened toward the outside. The first connecting pipe 260 is arranged longitudinally and connects the plurality of first spray pipes 250 from bottom to top. The first spray pipes 250 and the first connecting pipe 260 are both PVC pipes. The lower end of the first connecting pipe 260 is connected to a water supply hose, which is connected to a water tank through a booster water pump. The plurality of first spray pipes 250 are fixed on the outer side surface of the end mounting plate 240. At this time, the plurality of spray holes opened on the first spray pipes 250 face the direction of the side wall.

[0033] See also Figure 2 and Figure 4 The middle connecting assembly includes a middle connecting piece 320 and a middle connecting bolt 310. The lower end of the middle connecting piece 320 is connected to a transversely arranged middle sliding assembly. The middle spray assembly is transversely arranged at the upper end of the middle sliding assembly. The nut end of the middle connecting bolt 310 is clamped in the middle of the opening groove 111. The screw of the middle connecting bolt 310 passes downward through the upper end of the middle connecting piece 320 and is locked by the nut thread.

[0034] In this embodiment, the middle connecting member 320 is a U-shaped connecting frame with an opening facing upward, and the U-shaped connecting frame has two lateral longitudinal plates and a lower transverse plate, and the upper ends of the two lateral longitudinal plates have a bent plate that is horizontally bent outward, and a through hole is opened on the bent plate, and the screw rod of the middle connecting bolt 310 passes through the through hole longitudinally and is locked by a nut thread, in order to increase the stability of the connection. A rubber anti-slip gasket is arranged between the bent plate and the open channel 111, and a double nut is also used.

[0035] Similarly, the size of the nut of the middle connecting bolt 310 is the same as that of the nut of the end connecting bolt 210, and can also form the above-mentioned matching relationship with the opening channel 111 and the opening flange 112. That is, the nut of the middle connecting bolt 310 entering the opening channel 111 can be stuck in the opening channel 111 after rotating 90 degrees and will not fall out from between the two opening flanges 112.

[0036] See also Figure 4 The middle sliding assembly includes a middle transverse rail 330 and a middle mounting plate 340. Second transverse slideways 331 are arranged on both sides of the middle transverse rail 330. Two groups of second pulleys 341 are arranged on the left and right sides of the lower end of the middle mounting plate 340. The two groups of second pulleys 341 are respectively slidably arranged on the two second transverse slideways 331. The middle spray assembly is arranged on the upper end of the middle mounting plate 340.

[0037] In this embodiment, the middle mounting plate 340 is connected to the upper end of the lower horizontal plate by a plurality of hexagon socket screws, and the second horizontal slideways 331 on the left and right sides of the middle horizontal rail 330 are arranged along the length direction thereof, and the cross section of the second horizontal slideway 331 is an arc groove structure, which can increase the contact area between the second pulley 341 and the bottom of the groove of the second horizontal slideway 331, thereby reducing the shaking of the second pulley 341 when sliding. The second pulley 341 is a rubber wheel, which can increase the friction between it and the bottom of the groove of the second horizontal slideway 331.

[0038] A plurality of second transverse slideways 331 are connected in sequence to form a middle slideway extending along the length direction of the tunnel, and the middle spray assembly slides along the middle slideway to complete the maintenance work on the deep area of ​​the vault in the tunnel. The opposite ends of two adjacent second transverse slideways 331 are connected to each other and are located in the middle of the two U-shaped connecting frames.

[0039] See also Figure 4 The middle spray assembly includes two second spray pipes 350, which are installed on the upper end surface of the middle mounting plate 340. The second spray pipes 350 are arranged along the length direction of the tunnel and have multiple spray holes on the upper side. The second spray pipes 350 and the second connecting pipe are both PVC pipes. The second connecting pipe is connected to the water tank through a booster water pump. The two second spray pipes 350 are fixed on the upper end surface of the middle mounting plate 340. At this time, the multiple spray holes opened on the second spray pipes 350 face the direction of the arch. In addition, a second connecting pipe can be connected between the two second spray pipes 350, one end of the second connecting pipe is connected to a water hose, and the water hose is connected to the water tank through a booster water pump.

[0040] In addition, the tunnel spray maintenance system also includes a surface temperature measuring element and an inner temperature measuring element. The surface temperature measuring element is attached to the surface of the tunnel concrete to measure the temperature of the surface of the tunnel concrete; the inner temperature measuring element is buried in the inner layer of the tunnel concrete to measure the temperature of the inner layer of the tunnel concrete. Temperature measuring elements are also installed in the tunnel. The temperature measuring elements in three different areas use the difference relationship to obtain the temperature difference between the inside and outside of the tunnel. When the temperature difference between the inside and outside exceeds 25°C and the temperature difference between the outside and inside exceeds 20°C, the intelligent control cabinet control device starts, and the booster pump in the water tank starts to supply water to the spray assembly. At the same time, the first pulley 241 and the second pulley 341 start to move along the corresponding slide. Baffles are set at both ends of the slideway, and electronic infrared rangefinders are installed at both ends of the slideway. When the spray assembly is driven by the sliding assembly to a distance of 30 cm from the baffle, it stops and starts to move in the opposite direction. When it is also moved to a distance of 30 cm from the baffle in the opposite direction, it stops, turns around, and repeatedly drives back and forth to spray until the temperature difference between the inside and outside of the concrete is less than the specification requirements. The water source of the spray assembly of the present invention comes from the vacuum dewatering pipe well in the tunnel. The well water of the vacuum dewatering pipe well is transported to the water tank through a pipeline. An electronic float valve is provided in the water pipe. When the water level drops, the well water of the dewatering pipe well is replenished in the water tank. After the water level rises to a certain depth, the well water of the dewatering pipe well is no longer replenished in the water pipe. A three-way valve is provided on the well water pipeline of the dewatering pipe well. The electronic three-way valve is matched with the electronic float valve to realize the destination of the well water in the pipe well.

[0041] The tunnel spraying maintenance system provided by the present invention only needs to connect the sliding assembly to the embedded component 100 of the tunnel vault through the connecting assembly, and the spraying assembly is installed on the sliding assembly to realize the movement of the spraying assembly. The tunnel spraying maintenance system provided by the present invention can monitor the temperature difference between the inside and outside of the concrete and the temperature difference between the concrete surface and the outside, so as to judge the maintenance time and duration. The spraying assembly of the present invention can move back and forth on the slideway by itself and turn around at the end; the spraying maintenance system of the present invention can automatically identify the water storage capacity of the water tank and add water according to the water storage capacity.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tunnel spraying maintenance system, characterized in that: The invention comprises an embedded component (100), wherein the embedded component (100) is embedded in the top of a tunnel in a conformal manner and the length direction of the embedded component (100) is perpendicular to the length direction of the tunnel, end maintenance mechanisms (200) are respectively provided at both ends of the length direction of the embedded component (100), and a middle maintenance mechanism (300) is provided in the middle of the length direction of the embedded component (100); The end maintenance mechanism (200) comprises an end connection assembly and an end spray assembly, wherein the end spray assembly is arranged at the end of the embedded component (100) through the end connection assembly, and the end spray assembly is used to maintain concrete within the range of the side wall; The middle maintenance mechanism (300) comprises a middle connection assembly and a middle spray assembly. The middle spray assembly is arranged at the middle of the length direction of the embedded component (100) through the middle connection assembly. The middle spray assembly is used to maintain concrete within the range of the vault.

2. A tunnel spraying maintenance system according to claim 1, characterized in that: The embedded component (100) comprises a U-shaped steel (110), wherein the U-shaped steel (110) is arranged at the top of the tunnel in a conformal manner, wherein the length direction of the U-shaped steel (110) is perpendicular to the length direction of the tunnel, wherein the U-shaped steel (110) is provided with a downwardly directed open channel (111), wherein a plurality of T-shaped embedded parts (120) are arranged at intervals on the upper end surface of the U-shaped steel (110) along the length direction, wherein the plurality of T-shaped embedded parts (120) are embedded in the top of the tunnel, wherein the two end connection components are respectively arranged at the two ends of the open channel (111), and the middle connection component is arranged in the middle of the open channel (111).

3. A tunnel spraying maintenance system according to claim 2, characterized in that: There are a plurality of U-shaped steels (110), and the plurality of U-shaped steels (110) are arranged at intervals along the length direction of the tunnel, and connecting flat steels (130) are respectively welded at both ends of two adjacent U-shaped steels (110).

4. A tunnel spraying maintenance system according to claim 2, characterized in that: The end connection assembly comprises an end connection piece (220) and an end connection bolt (210); the lower end of the end connection piece (220) is connected to a transversely arranged end sliding assembly; the end spray assembly is transversely arranged on one side of the end sliding assembly; the nut end of the end connection bolt (210) is clamped on the end of the open channel (111); the screw rod of the end connection bolt (210) passes downward through the upper end of the end connection piece (220) and is locked by a nut thread.

5. A tunnel spraying maintenance system as claimed in claim 4, characterized in that: The end sliding assembly comprises an end transverse rail (230) and an end mounting plate (240), the upper and lower ends of the end transverse rail (230) are both provided with first transverse slideways (231), the upper part of the end mounting plate (240) is provided with two groups of first pulleys (241) from top to bottom, the two groups of first pulleys (241) are respectively and correspondingly slidably arranged on the two first transverse slideways (231), and the end spray assembly is arranged at the lower part of the end mounting plate (240).

6. A tunnel spraying maintenance system according to claim 5, characterized in that: The end spray assembly comprises a plurality of first spray pipes (250) and a first connecting pipe (260), wherein the plurality of first spray pipes (250) are sequentially installed on the outer end surface of the end mounting plate (240) from top to bottom, the first spray pipes (250) are arranged along the length direction of the tunnel and are provided with a plurality of spray holes toward the outside, and the first connecting pipe (260) is arranged longitudinally and connects the plurality of first spray pipes (250) from bottom to top.

7. A tunnel spraying maintenance system as claimed in claim 2, characterized in that: The middle connecting assembly comprises a middle connecting piece (320) and a middle connecting bolt (310); the lower end of the middle connecting piece (320) is connected to a transversely arranged middle sliding assembly; the middle spray assembly is transversely arranged at the upper end of the middle sliding assembly; the nut end of the middle connecting bolt (310) is clamped in the middle of the open groove (111); the screw rod of the middle connecting bolt (310) passes downward through the upper end of the middle connecting piece (320) and is locked by a nut thread.

8. A tunnel spraying maintenance system according to claim 7, characterized in that: The middle sliding assembly comprises a middle transverse rail (330) and a middle mounting plate (340), second transverse slideways (331) are arranged on both sides of the middle transverse rail (330), two groups of second pulleys (341) are arranged on the left and right sides of the lower end of the middle mounting plate (340), the two groups of second pulleys (341) are respectively and correspondingly arranged on the two second transverse slideways (331), and the middle spray assembly is arranged on the upper end of the middle mounting plate (340).

9. A tunnel spraying maintenance system according to claim 8, characterized in that: The middle spray assembly comprises two second spray pipes (350), the two second spray pipes (350) being installed on the upper end surface of the middle mounting plate (340) on the left and right sides, the second spray pipes (350) being arranged along the length direction of the tunnel and having a plurality of spray holes opened upward.

10. A tunnel spraying maintenance system according to any one of claims 1 to 9, characterized in that: The tunnel spray maintenance system also includes a surface temperature measuring element and an inner temperature measuring element. The surface temperature measuring element is attached to the surface layer of the tunnel concrete and is used to measure the temperature of the surface layer of the tunnel concrete. The inner temperature measuring element is buried in the inner layer of the tunnel concrete and is used to measure the temperature of the inner layer of the tunnel concrete.

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