External hanging type intelligent maintenance system, lining trolley and intelligent maintenance method

Abstract

The application discloses an external hanging type intelligent maintenance system, a lining trolley and an intelligent maintenance method, and relates to the tunnel maintenance field.The external hanging type intelligent maintenance system comprises a spraying device, a plurality of spraying components capable of spraying high-temperature steam, a first connecting structure arranged on each spraying component, and a trolley template.The first connecting structure is used for detachably connecting the two ends or the two side bottoms of the trolley template.A longitudinal sealing element is used for detachably filling between the two side bottoms of the trolley template and a secondary lining concrete structure.A ring-shaped sealing element is used for detachably filling between the two ends of the trolley template and the secondary lining concrete structure.The external hanging type intelligent maintenance system can be loaded on the lining trolley in a hanging manner, so that timely maintenance can be achieved without moving the equipment, the quality of the secondary lining concrete structure of the tunnel surface is effectively guaranteed, and the problem that the concrete lining is not maintained in time after demolding in the existing tunnel construction process is solved.

Description

Technical Field

[0001] This invention relates to the field of tunnel maintenance technology, specifically an external intelligent maintenance system, a lining trolley, and an intelligent maintenance method. Background Technology

[0002] Currently, the requirements for tunnel construction quality are becoming increasingly stringent. Among the factors influencing tunnel construction quality, the strength of concrete directly determines the safety and lifespan of the tunnel. As the preparatory load-bearing structure of the tunnel, the secondary lining plays a significant role in its durability. To meet the functional requirements of the tunnel, the secondary lining concrete structure has become increasingly important. Post-lining curing is a crucial factor affecting concrete strength. Currently, the following problems in the tunnel lining construction and curing process remain unresolved:

[0003] In current tunnel construction techniques, the pre-curing process involves secondary lining equipment and rebar binding equipment. Curing the newly lined tunnel secondary lining concrete structure (curing upon demolding) requires moving the secondary lining trolley and waterproofing trolley forward, or having the curing trolley pass through the secondary lining trolley to the curing position. Both methods involve moving related equipment, which is time-consuming and labor-intensive. Therefore, currently, newly lined tunnels are generally not cured immediately. Instead, curing is done after the lining trolley moves forward to another section of lining, creating space for spray curing. This misses the optimal curing time, leading to untimely curing, which in turn reduces the quality of the concrete. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention provides an external intelligent maintenance system, a lining trolley, and an intelligent maintenance method. The maintenance system can be externally mounted on the lining trolley, thereby enabling timely maintenance without moving the equipment.

[0005] To achieve the above objectives, the present invention provides an external intelligent maintenance system, comprising:

[0006] The spraying device includes several spraying components capable of spraying high-temperature steam. Each spraying component is provided with a first connecting structure for detachably connecting to the bottom of both ends or sides of the trolley template.

[0007] Longitudinal seals are used to removably fill the space between the bottom sides of the trolley formwork and the secondary lining concrete structure.

[0008] Circumferential seals are used to removably fill the space between the two ends of the trolley formwork and the secondary lining concrete structure.

[0009] In one embodiment, the spraying device further includes a plurality of spraying components capable of spraying water mist.

[0010] In one embodiment, the spraying device further includes a steam generating component and a water mist generating component;

[0011] A portion of the spray assembly is connected to the steam generating assembly via pipelines for spraying high-temperature steam;

[0012] Another part of the spray assembly is connected to the water mist generating assembly through a pipeline for spraying water mist.

[0013] In one embodiment, the spray assembly includes a base, a universal joint, and a nozzle;

[0014] The first connecting structure is disposed on the base, the universal tube is fixedly disposed on the base, the nozzle is disposed at the first end of the universal tube, and the second end of the universal tube is a pipeline interface.

[0015] In one embodiment, the longitudinal seal is made of an elastic, waterproof and airtight material, or the longitudinal seal is an insulated curtain with a pull-out and folding function;

[0016] The circumferential seal is made of an elastic, waterproof and airtight material, or the circumferential seal is made of an insulating curtain with a pull-out and folding function.

[0017] In one embodiment, the longitudinal seal and / or the circumferential seal are segmented structures.

[0018] In one embodiment, the spray assembly further includes a temperature and humidity detection unit;

[0019] The temperature and humidity detection unit is fixedly mounted on the universal tube, or the temperature and humidity detection unit is connected to a second connection structure that can be detachably connected to the trolley template.

[0020] To achieve the above objectives, the present invention also provides a lining trolley, including a trolley template and the aforementioned external intelligent curing system;

[0021] The longitudinal seal is detachably provided at the bottom of both sides of the trolley template, and the circumferential seal is detachably provided at both ends of the trolley template, for forming a closed curing cavity between the trolley template and the secondary lining concrete structure.

[0022] Inside the curing chamber, several spraying components are connected at intervals to both ends and the bottom sides of the trolley template, and the nozzles of each spraying component face the curing chamber, for spraying high-temperature steam into the curing chamber or for spraying high-temperature steam and water mist into the curing chamber.

[0023] In one embodiment, the spray assembly that sprays high-temperature steam is defined as a steam spray assembly, and the spray assembly that sprays water mist is defined as a water mist spray assembly.

[0024] Within the curing chamber, the number of steam spray components exceeds the number of water mist spray components.

[0025] In one embodiment, the spraying components located at both ends of the trolley template are defined as circumferential spraying components, and the spraying components located on both sides of the trolley template are defined as longitudinal spraying components.

[0026] The circumferential spray assembly and the longitudinal spray assembly have separate control switches for simultaneous or individual operation.

[0027] To achieve the above objectives, the present invention also provides an intelligent maintenance method, which employs the aforementioned external intelligent maintenance system;

[0028] The intelligent maintenance method includes the following steps:

[0029] Step 1: Several spraying components are installed at intervals at both ends and the bottom of both sides of the lining trolley template. Each spraying component includes a base, a universal tube on the base, and a nozzle at the end of the universal tube.

[0030] Step 2: After the lining trolley completes the demolding of the secondary lining, fold the universal joints of each spraying component so that the nozzles face the position between the trolley template and the secondary lining concrete structure.

[0031] Step 3: Fill and install circumferential seals between the outer walls of both ends of the trolley formwork and the secondary lining concrete structure to form a closed curing chamber, and ensure that the nozzles of all spray components are located inside the curing chamber; or fill and install circumferential seals and longitudinal seals between the outer walls of both ends of the trolley formwork and the secondary lining concrete structure, and between the outer walls of the bottom sides of the trolley formwork and the secondary lining concrete structure, respectively, to form a closed curing chamber, and ensure that the nozzles of all spray components are located inside the curing chamber.

[0032] Step 4: Control each spraying component to spray high-temperature steam into the curing chamber or control each spraying component to spray high-temperature steam and water mist into the curing chamber to complete the curing of the secondary lining concrete structure.

[0033] Step 5: After the curing is completed, remove the circumferential seal and the longitudinal seal, and fold the universal joints of each spray assembly so that the nozzles and universal joints of the spray assembly are located inside the trolley template.

[0034] Step 6: After the lining trolley completes the next secondary lining construction, repeat steps 1 to 5.

[0035] Compared with the prior art, the present invention has the following beneficial technical effects:

[0036] 1. This invention can load the curing system onto the lining trolley in an external manner, thereby achieving timely curing without moving the equipment, thus effectively ensuring the quality of the secondary lining concrete structure of the tunnel face, and solving the problem of untimely curing after demolding of concrete lining in the existing tunnel construction process.

[0037] 2. This invention mounts an external intelligent curing system onto the lining trolley, enabling the lining trolley to have both lining and curing modes. The transition from lining to curing mode is fast, and the curing process utilizes the principle of automatic floating of high-temperature steam to form a curing area, which is quick and convenient.

[0038] 3. This invention is applicable to various types of lining trolleys and does not require modification of the lining trolleys. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 This is a front view of the external intelligent maintenance system in Embodiment 1 of the present invention mounted on the lining trolley;

[0041] Figure 2 This is a side view of the external intelligent maintenance system in Embodiment 1 of the present invention mounted on a lining trolley;

[0042] Figure 3 This is a schematic diagram of the structure of the spray assembly located inside the trolley template in Embodiment 1 of the present invention;

[0043] Figure 4 This is a schematic diagram of the structure of the spray assembly located outside the trolley template in Embodiment 1 of the present invention;

[0044] Figure 5 This is a schematic diagram of the arrangement structure of the longitudinal seal or the circumferential seal in Embodiment 1 of the present invention;

[0045] Figure 6 This is a side view of the external intelligent maintenance system in Embodiment 2 of the present invention mounted on the lining trolley;

[0046] Figure 7 This is a flowchart of the intelligent maintenance method in Embodiment 4 of the present invention.

[0047] Reference numerals: 1. Longitudinal seal; 2. Circumferential seal; 3. Temperature and humidity control system; 4. Steam generation component; 5. Water mist generation component; 6. Spraying component; 6. Base; 601. Universal tube; 602. Nozzle; 603. Pipeline; 604. Temperature and humidity detection unit; 605. Trolley body; 7. Trolley template; 8. Secondary lining concrete structure; 9.

[0048] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0050] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0051] Example 1

[0052] This embodiment discloses an external intelligent maintenance system (hereinafter referred to as the "maintenance system"). The maintenance system can be externally mounted on the lining trolley without modifying the lining trolley, so that the lining trolley can simultaneously have lining mode and maintenance mode. The switching process from lining mode to maintenance mode is simple and quick, so that timely maintenance can be carried out without moving the lining trolley and other equipment during tunnel lining construction (maintenance is carried out immediately after the first formwork is demolded). This effectively ensures the quality of the secondary lining concrete structure of the tunnel face and solves the problem of untimely maintenance after concrete lining demolding in the existing tunnel construction process.

[0053] refer to Figure 1 , Figure 2 The external intelligent maintenance system in this embodiment includes a spraying device, a longitudinal seal 1, and a circumferential seal 2.

[0054] The spraying device consists of a temperature and humidity control system 3, a steam generating component 4, a water mist generating component 5, and several spraying components 6. One part of the spraying components 6 is connected to the steam generating component 4 via a pipe 604 to spray high-temperature steam; another part of the spraying components 6 is connected to the water mist generating component 5 via a pipe 604 to spray water mist.

[0055] In this embodiment, when the external intelligent curing system is mounted on the lining trolley, the temperature and humidity control system 3, the steam generation component 4, and the water mist generation component 5 are directly installed on the trolley body 7. Several spray components 6 are arranged at intervals along the circumferential walls at both ends of the trolley template 8, and several spray components 6 are also arranged at intervals along the longitudinal walls at the bottom sides of the trolley template 8. A portion of the spray components 6 on the circumferential walls of the trolley template 8 are connected to the steam generation component 4 via pipes 604 to spray high-temperature steam, while another portion is connected to the water mist generation component 5 via pipes 604 to spray water mist. Similarly, a portion of the spray components 6 on the longitudinal walls of the trolley template 8 are connected to the steam generation component 4 via pipes 604 to spray high-temperature steam, while another portion is connected to the water mist generation component 5 via pipes 604 to spray water mist.

[0056] refer to Figure 3 , Figure 4 The spray assembly 6 includes a base 601, a universal joint 602, and a nozzle 603. The base 601 has a first connection structure that allows for detachable connection to the trolley template 8. The universal joint 602 is fixed to the base 601 by clamps, bolts, or welding. The nozzle 603 is located at the first end of the universal joint 602, and the second end of the universal joint 602 is a pipe interface for connecting to the steam generating assembly 4 or the water mist generating assembly 5 via a pipe 604. By using the universal joint 602, the base 601 can be directly placed on the inner wall of the trolley template 8. When the lining trolley is performing lining operations, the universal joint 602 and the nozzle 603 are folded to the inside of the trolley template 8 to avoid affecting the lining operation. After the lining trolley completes the lining and demolding, the universal joint 602 can be bent so that the nozzle 603 faces the space between the trolley template 8 and the secondary lining concrete structure 9 for real-time curing. It not only allows for maintenance without modifying the lining trolley, but is also applicable to various types of lining trolleys. The 602 universal tube can also be replaced by a combination of ordinary piping and a mechanical tilting structure.

[0057] In the specific implementation process, the first connecting structure is a magnetic attraction structure set on the base 601. The base 601 is magnetically attracted to the trolley template 8. The strength of the magnetic attraction structure is such that the attraction is firm yet can be manually removed. In specific applications, magnetic materials can be directly used as the base 601, or electromagnetic components can be arranged on the base 601. The specific structure is a conventional technology, so it will not be described in detail in this embodiment. It is worth noting that the first connecting structure is not limited to a magnetic attraction structure. Industrial adhesive can also be applied directly to the base 601 as the first connecting structure, without modifying the lining trolley. Of course, in specific applications, it is not limited to attracting or bonding the base 601 to the inner wall of the trolley template. The base 601 can also be attracted or bonded to the outer wall of the trolley template according to the actual situation or needs.

[0058] In a preferred embodiment, the spray assembly 6 further includes a temperature and humidity detection unit 605, which can be a temperature and humidity sensor. In the same group of spray assemblies 6, the temperature and humidity detection unit 605 is fixedly mounted on the universal joint 602. Alternatively, the temperature and humidity detection unit 605 can be connected to a second connection structure that can be detachably connected to the trolley template 8. For example, the temperature and humidity detection unit 605 can be directly glued to the trolley template, or a universal joint structure similar to that used for the base 601 and the universal joint 602 can be used as the second connection structure. In specific implementation, the temperature and humidity control system 3 is communicatively connected to the temperature and humidity detection unit 605, the steam generating assembly 4, and the water mist generating assembly 5. During the curing process, the temperature and humidity of the curing space are collected by the temperature and humidity detection unit 605 and transmitted to the temperature and humidity control system 3. The temperature and humidity control system 3 controls the steam temperature or steam flow rate of the steam generating assembly 4 and the water mist flow rate of the water mist generating assembly 5, thereby achieving optimal curing conditions in the curing space. As for how to control the temperature and humidity to achieve the optimal curing conditions, these are conventional techniques or can be set based on experience, such as curing temperature, humidity, and time. Therefore, they will not be elaborated on in this embodiment. Among them, the steam generating component 4 can be a steam generator, the water mist generating component 5 can be a high-pressure water pump, and the atomizing nozzle is used as the nozzle 603 of the spraying component 6, or an ultrasonic water mist generator can be directly used as the water mist generating component 5.

[0059] refer to Figure 1 , Figure 2 The longitudinal seal 1 is used to detachably fill the space between the bottom sides of the trolley formwork 8 and the secondary lining concrete structure 9. The circumferential seal 2 is used to detachably fill the space between the ends of the trolley formwork 8 and the secondary lining concrete structure 9. The longitudinal seal 1 and the circumferential seal 2 have waterproof and airtight properties and can adapt to the temperature under tunnel working conditions. Therefore, the longitudinal seal 1 and the circumferential seal 2 work together to form a closed curing cavity between the trolley formwork 8 and the secondary lining concrete structure 9.

[0060] Both the longitudinal seal 1 and the circumferential seal 2 can be made of elastic, waterproof, and airtight materials, such as expanded silicone or soft foam. (Reference) Figure 5 The thickness of the longitudinal seal 1 and the circumferential seal 2 is greater than the gap between the trolley template 8 and the secondary lining concrete structure 9. During installation, the longitudinal seal 1 and the circumferential seal 2 are compressed to a certain extent and placed in the gap between the trolley template 8 and the secondary lining concrete structure 9. The elasticity of the longitudinal seal 1 and the circumferential seal 2 themselves can maintain the installation and fixation. Of course, in specific applications, it is not limited to using foamed silicone or soft foam to make the longitudinal seal 1 and the circumferential seal 2. Inflatable airbags can also be used as the longitudinal seal 1 and the circumferential seal 2. During curing, the airbags are inflated with an air pump, which can also achieve a rapid sealing effect. Since complete sealing is not required during curing, a thermal insulation curtain with a pull-out and folding function can also be used as the longitudinal seal 1 and the circumferential seal 2.

[0061] Preferably, both the longitudinal seal 1 and the circumferential seal 2 are designed as segmented structures, with the design length based on the weight of a single segment of the longitudinal seal 1 or circumferential seal 2 to facilitate manual operation. The segmented design of the longitudinal seal 1 and circumferential seal 2 also allows the nozzle 603 to be inserted directly into the curing chamber through the gap between the two segments when folding the universal tube 602.

[0062] In this embodiment, the maintenance principle of the maintenance system is as follows: During the maintenance operation, the spray assembly 6 located on the circumferential wall of the trolley template 8 sprays high-temperature steam and water mist from both ends of the trolley template 8 to the middle, and the spray assembly 6 located on the longitudinal wall of the trolley template 8 sprays high-temperature steam and water mist from the bottom to the top. By utilizing the principle of automatic upward floating of high-temperature steam, the temperature and humidity of the entire maintenance chamber rise as a whole, thus completing the maintenance operation.

[0063] Example 2

[0064] like Figure 6 The diagram shows an external intelligent maintenance system (hereinafter referred to as the "maintenance system") disclosed in this embodiment. The implementation method of the maintenance system is basically the same as that of Embodiment 1, except that the spraying device consists of a temperature and humidity control system 3, a steam generation component 4, and several spraying components 6. All spraying components 6 are connected to the steam generation component 4 through pipelines for spraying high-temperature steam.

[0065] In this embodiment, the maintenance principle of the maintenance system is as follows: During the maintenance operation, the spraying components 6 located on the circumferential wall of the trolley template 8 spray high-temperature steam from both ends of the trolley template 8 to the middle, and the spraying components located on the longitudinal wall of the trolley template 8 spray high-temperature steam from the bottom to the top. By utilizing the principle of automatic floating of high-temperature steam and the fact that high-temperature steam will turn into liquid water after cooling, the temperature and humidity of the entire maintenance chamber will rise as a whole, thus completing the maintenance operation.

[0066] Example 3

[0067] like Figure 1 , Figure 2 , Figure 6 The image shows a lining trolley disclosed in this embodiment, which includes a trolley body 7, a trolley template 8, and an external intelligent maintenance system as described in Embodiment 1 or Embodiment 2.

[0068] Specifically, longitudinal seals 1 are detachably installed at the bottom of both sides of the trolley formwork 8, and circumferential seals 2 are detachably installed at both ends of the trolley formwork 8, forming a closed curing chamber between the trolley formwork 8 and the secondary lining concrete structure 9. Inside the curing chamber, several spraying components 6 are spaced apart at both ends and the bottom of both sides of the trolley formwork 8, with the nozzles of each spraying component 6 facing the curing chamber, for spraying high-temperature steam or high-temperature steam and water mist into the curing chamber. The specific implementation methods of the longitudinal seals 1, circumferential seals 2, and spraying components 6 are the same as in Embodiment 1, therefore, they will not be described again in this embodiment.

[0069] In the specific implementation process, the spray assembly 6 that sprays high-temperature steam is defined as a steam spray assembly, and the spray assembly 6 that sprays water mist is defined as a water mist spray assembly. Within the curing chamber, the number of steam spray assemblies exceeds the number of water mist spray assemblies. Simultaneously, the spray assemblies 6 located at both ends of the trolley template 8 are defined as circumferential spray assemblies, and the spray assemblies 6 located on both sides of the trolley template 8 are defined as longitudinal spray assemblies. The circumferential and longitudinal spray assemblies have separate control switches for simultaneous or individual operation.

[0070] In this embodiment, the lining trolley has a lining mode and a curing mode. The lining mode is the original working mode of the lining trolley. In the curing mode, a closed curing chamber is formed between the trolley template 8 and the secondary lining concrete structure 9 by using the longitudinal sealing element 1 and the circumferential sealing element 2. Subsequently, the spray assembly 6 located on the circumferential wall of the trolley template 8 sprays high-temperature steam and water mist from both ends of the trolley template 8 towards the center, and the spray assembly 6 located on the longitudinal wall of the trolley template 8 sprays high-temperature steam and water mist from the bottom upwards. Utilizing the principle of automatic upward floating of high-temperature steam, the temperature and humidity of the entire curing chamber rise as a whole, completing the curing operation.

[0071] Example 4

[0072] This embodiment discloses an intelligent maintenance method, which adopts the external intelligent maintenance system of Embodiment 1 or Embodiment 2 and the lining trolley of Embodiment 2. (Reference) Figure 7 The intelligent maintenance method in this embodiment specifically includes the following steps:

[0073] Step 1: Several spraying components are installed at intervals at both ends and the bottom of both sides of the lining trolley template. Each spraying component includes a base, a universal tube on the base, and a nozzle at the end of the universal tube. The base is fixed to the inner wall of the trolley template by magnetic attraction or adhesive bonding.

[0074] Step 2: After the lining trolley completes the demolding of the secondary lining, fold the universal joints of each spraying component so that the nozzles face the position between the trolley template and the secondary lining concrete structure.

[0075] Step 3: Fill and install circumferential seals between the outer walls of both ends of the trolley formwork and the secondary lining concrete structure to form a relatively closed curing chamber, and ensure that the nozzles of all spray components are located inside the curing chamber; or fill and install circumferential seals and longitudinal seals between the outer walls of both ends of the trolley formwork and the secondary lining concrete structure, and between the outer walls of the bottom sides of the trolley formwork and the secondary lining concrete structure, respectively, to form a closed curing chamber, and ensure that the nozzles of all spray components are located inside the curing chamber.

[0076] Step 4: Control each spraying component to spray high-temperature steam into the curing chamber or control each spraying component to spray high-temperature steam and water mist into the curing chamber to complete the curing of the secondary lining concrete structure.

[0077] Step 5: After the curing is completed, remove the circumferential seal and the longitudinal seal, and fold the universal joints of each spray assembly so that the nozzles of the spray assembly and the universal joints are located inside the trolley template, ready for the next secondary lining construction.

[0078] Step 6: After the lining trolley completes the next secondary lining construction, repeat steps 1 to 5.

[0079] The intelligent maintenance method in this embodiment can perform timely maintenance without moving equipment such as lining trolleys during tunnel lining construction, thereby effectively ensuring the quality of the secondary lining concrete structure of the tunnel face and solving the problem of untimely maintenance after concrete lining demolding in existing tunnel construction processes.

[0080] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A smart maintenance method, characterized in that, An external intelligent curing system is adopted, which includes: a spraying device, comprising several spraying components capable of spraying high-temperature steam, each of the spraying components being provided with a first connecting structure for detachably connecting to both ends or the bottom sides of the trolley template; longitudinal sealing components for detachably filling the space between the bottom sides of the trolley template and the secondary lining concrete structure; and circumferential sealing components for detachably filling the space between both ends of the trolley template and the secondary lining concrete structure. The spraying device further includes a steam generating component and a water mist generating component; a portion of the spraying component is connected to the steam generating component via a pipeline for spraying high-temperature steam; another portion of the spraying component is connected to the water mist generating component via a pipeline for spraying water mist; the spraying component includes a base, a universal tube, and a nozzle; the first connecting structure is disposed on the base, the universal tube is fixedly disposed on the base, the nozzle is disposed at the first end of the universal tube, and the second end of the universal tube is a pipeline interface; The intelligent maintenance method includes the following steps: Step 1: Several spraying components are installed at intervals at both ends and the bottom of both sides of the lining trolley template. Each spraying component includes a base, a universal tube on the base, and a nozzle at the end of the universal tube. Step 2: After the lining trolley completes the demolding of the secondary lining, fold the universal joints of each spraying component so that the nozzles face the position between the trolley template and the secondary lining concrete structure. Step 3: Install circumferential seals between the outer walls of both ends of the trolley formwork and the secondary lining concrete structure, or fill and install circumferential seals and longitudinal seals between the outer walls of both ends of the trolley formwork and the secondary lining concrete structure, and between the outer walls of the bottom sides of the trolley formwork and the secondary lining concrete structure, respectively, to form a closed curing cavity. Step 4: Control each spraying component to spray high-temperature steam into the curing chamber or control each spraying component to spray high-temperature steam and water mist into the curing chamber to complete the curing of the secondary lining concrete structure. Step 5: After the curing is completed, remove the circumferential seal and the longitudinal seal, and fold the universal joints of each spray assembly so that the nozzles and universal joints of the spray assembly are located inside the trolley template. Step 6: After the lining trolley completes the next secondary lining construction, repeat steps 1 to 5.

2. The intelligent maintenance method according to claim 1, characterized in that, The spray assembly also includes a temperature and humidity detection unit; The temperature and humidity detection unit is fixedly mounted on the universal tube, or the temperature and humidity detection unit is connected to a second connection structure that can be detachably connected to the trolley template.

3. The intelligent maintenance method according to claim 1 or 2, characterized in that, The longitudinal seal is made of an elastic, waterproof and airtight material, or the longitudinal seal is a heat-insulating curtain with a pull-out and folding function; The circumferential seal is made of an elastic, waterproof and airtight material, or the circumferential seal is made of an insulating curtain with a pull-out and folding function.

4. The intelligent maintenance method according to claim 1 or 2, characterized in that, The longitudinal seal and / or the circumferential seal are segmented structures.

5. The intelligent maintenance method according to claim 1 or 2, characterized in that, The spraying components located at both ends of the trolley template are defined as circumferential spraying components, and the spraying components located on both sides of the trolley template are defined as longitudinal spraying components. The circumferential spray assembly and the longitudinal spray assembly have separate control switches for simultaneous or individual operation.

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