Intelligent apparatus and method for maintenance of tunnel lining

Abstract

Disclosed in the present invention are an intelligent apparatus and method for maintenance of a tunnel lining. The apparatus comprises an intelligent controller, a strength measurement assembly, an apparatus moving frame, and an inflatable bag, a heat insulation layer, a heating layer and a moisture retention layer which are sequentially fixed on the apparatus moving frame from bottom to top, wherein the strength detection assembly is arranged on the apparatus moving frame and configured to measure the strength of lining concrete; the moisture retention layer is configured to come into contact with a surface of the lining concrete for maintenance operations; the inflatable bag is connected to an inflation pump, and the activation and deactivation of the inflation pump allow for adjustments to the contact pressure between the moisture retention layer and the surface of the lining concrete; a heating element is provided in the heating layer and is connected to a resistance measurement device; a temperature and humidity sensor and a water supply pipe are provided in the moisture retention layer, with a water supply pump being connected the water supply pipe; and the intelligent controller is electrically connected to the inflation pump, the heating element, the resistance measurement device, the temperature and humidity sensor and the water supply pump. The present apparatus has the ability to intelligently monitor and adjust the contact pressure, temperature, and humidity, so that the maintenance effect can be significantly improved.

Description

Intelligent tunnel lining maintenance equipment and maintenance method Technical Field

[0001] The present invention relates to the technical field of lining concrete curing, and in particular to intelligent tunnel lining curing equipment and a curing method. Background Art

[0002] Tunnel projects in plateau regions, affected by adverse environmental factors such as high temperatures and dryness, suffer from poor curing of tunnel lining concrete. Problems such as slow strength growth, surface microcracks, and even insufficient strength are common, severely impacting the quality and lifespan of the lining concrete. Traditional curing methods, typically watering, significantly reduce curing effectiveness and fail to meet requirements due to difficulties in controlling curing water temperature, infrequent curing, and short moisturizing periods. Some tunnels employ natural curing methods to reduce workload, making it even more difficult to guarantee effective curing.

[0003] Therefore, how to improve the effect of lining concrete curing is a problem that needs to be solved in this field.

[0004] Summary of the Invention

[0005] In view of the technical problem that the existing lining concrete adopts water sprinkling curing and natural curing, which has the poor curing effect, the purpose of the present invention is to provide an intelligent tunnel lining curing equipment and curing method, which has the intelligent monitoring and adjustment capabilities of contact pressure, temperature and humidity. During curing, the moisturizing layer is closely attached to the tunnel lining and provides uniform and constant curing temperature and humidity, which greatly improves the curing effect.

[0006] In order to achieve the above-mentioned purpose, the intelligent tunnel lining maintenance equipment provided by the present invention includes an intelligent controller, a strength detection component, an equipment mobile frame, and an air bag, an insulation layer, a heating layer, and a moisturizing layer fixed on the equipment mobile frame from bottom to top. The strength detection component is arranged on the equipment mobile frame to detect the strength of the lining concrete. The moisturizing layer is used to contact the surface of the lining concrete for maintenance operations. The air bag is connected to an air pump. The air pump can adjust the contact pressure between the moisturizing layer and the surface of the lining concrete. A heating element is provided in the heating layer, and the heating element is connected to the resistance detection device. A temperature and humidity sensor and a water supply pipe are provided in the moisturizing layer. The water supply pipe is connected to a water supply pump. The intelligent controller is electrically connected to the air pump, heating element, resistance detection equipment, temperature and humidity sensor, strength detection component and water supply pump respectively. The temperature and humidity sensor can send the temperature and humidity information of the moisturizing layer to the intelligent controller in real time. The intelligent controller can control the start and stop of the heating element and the water pump based on the temperature and humidity information. The resistance detection equipment can send the resistance information of the heating element to the intelligent controller. The intelligent controller can know the contact pressure between the moisturizing layer and the lining concrete surface based on the resistance value and control the start and stop of the air pump.

[0007] Furthermore, the heating layer is composed of two waterproof layers and a heating element, the two waterproof layers are respectively covered on both sides of the heating element, the heating element is located in the middle of the two waterproof layers, the heating element is connected to the intelligent controller, the heating element is connected to a resistance detection device, the resistance detection device is arranged between the two waterproof layers, and is respectively connected to the heating element and the intelligent controller, the resistance detection device can detect the resistance of the heating element in real time and transmit the resistance information to the intelligent controller.

[0008] Furthermore, the heating element is a carbon nanotube film, which is composed of a plurality of carbon nanotubes. The carbon nanotubes can be one or more of single-walled carbon nanotubes, double-walled carbon nanotubes, and multi-walled carbon nanotubes.

[0009] Furthermore, the carbon nanotube film can be composed of a single carbon nanotube distributed in a zigzag or full-coverage pattern, or a plurality of carbon nanotubes arranged in sequence in a stripe or matrix pattern.

[0010] Furthermore, the moisturizing layer includes a porous absorption layer, a temperature sensor, a humidity sensor and several water supply pipes. The temperature sensor, humidity sensor and several water supply pipes are all placed inside the porous water absorption layer. The water supply pipe is provided with several drainage holes and is connected to a water pump. The temperature sensor, humidity sensor and water pump are respectively connected to an intelligent controller. The temperature sensor and humidity sensor can transmit the detected temperature and humidity data to the intelligent controller in real time. The intelligent controller can control the start and stop of the heating element and the water pump based on the temperature and humidity data.

[0011] Furthermore, the strength detection component includes a transmitter and a detector, both of which are arranged on a mobile equipment rack and are electrically connected to an intelligent controller respectively. The start and stop of the transmitter can be controlled by the intelligent controller. When the transmitter is started, it can launch steel balls into the concrete. The detector detects the rebound distance of the steel balls and transmits the rebound distance data to the intelligent controller.

[0012] Furthermore, the intelligent controller includes a control module, a resistance detection module, a temperature detection module, a humidity detection module, a start input module, an air pump start module, a water pump start module, a heating start module, an intensity detection module, and a transmitter start module;

[0013] The control module is respectively connected to the resistance detection module, the temperature detection module, the humidity detection module, the start input module, the air pump start module, the water pump start module, the heating start module, the strength detection module, the transmitter start module, and the control module has a built-in program. The program can set parameters. By starting the input module, the control module can be started based on the program to control the above modules to perform intelligent maintenance operations;

[0014] The resistance detection module is connected to the resistance detection device, and the air pump starting module is connected to the air pump. The resistance detection module is used to receive resistance data detected by the resistance detection device and transmit it to the control module. The control module processes and determines based on the resistance data, and controls the start and stop of the air pump through the air pump starting module, so that the pressure on the contact surface between the moisturizing layer and the lining concrete can be maintained at an optimal value;

[0015] The temperature detection module is connected to the temperature sensor, and the heating start module is connected to the heating element. The temperature detection module is used to receive temperature data detected by the temperature sensor and transmit it to the control module. The control module processes and judges based on the temperature data, and controls the start and stop of the heating element through the heating start module, so that the temperature of the moisturizing layer is always at the optimal maintenance temperature;

[0016] The humidity detection module is connected to the humidity sensor, and the water pump starting module is connected to the water pump. The humidity detection module is used to receive humidity data detected by the humidity sensor and transmit it to the control module. The control module performs judgment and processing based on the humidity data, and controls the start and stop of the water pump through the water pump starting module, so that the humidity of the moisturizing layer can always be maintained at the optimal maintenance humidity;

[0017] The strength detection module is connected to the detector, the transmitter start module is connected to the transmitter, and the control module can control the start and stop of the transmitter through the transmitter start module. The strength detection module is used to receive the steel ball rebound distance data detected by the detector and transmit it to the control module. The control module processes the steel ball rebound distance to determine whether the concrete curing is completed.

[0018] Furthermore, the intelligent maintenance device also includes a mobile terminal, and the mobile terminal is wirelessly connected to the control module.

[0019] In order to achieve the above object, the present invention provides a maintenance method for intelligent tunnel lining maintenance equipment, which is used for any of the above items, and the maintenance method comprises:

[0020] S1: Move the tunnel lining intelligent maintenance equipment to the bottom of the tunnel lining to be maintained via the equipment moving frame, and fix the equipment moving frame;

[0021] S2: Connect water and electricity, and check the working status of each component of the tunnel lining intelligent maintenance equipment;

[0022] S3: Input curing parameters into the control module, bring the moisture-retaining layer into contact with the concrete surface, and start the input module to achieve intelligent curing based on the control module and program.

[0023] S4: When the time specified by the parameters is reached, the control module triggers the transmitter start signal and sends it to the transmitter start module. The transmitter start module controls the transmitter to start, and the transmitter launches steel balls to the lining concrete. The detector detects the rebound distance data of the steel balls and sends it to the strength detection module. The strength detection module transmits the rebound distance data to the control module. The control module compares the rebound distance with the set threshold. When it is less than the threshold, the control module triggers the transmitter start signal and sends it to the transmitter start module. When it is greater than or equal to the threshold, the control module triggers the end of maintenance signal and sends it to the mobile terminal. The control module controls all components to stop working, and the maintenance is completed.

[0024] S5: Move the tunnel lining intelligent maintenance equipment to the next tunnel lining and repeat steps S1-S4.

[0025] Furthermore, the specific process of intelligent maintenance in S3 includes:

[0026] S3.1: The control module sends a resistance detection signal to the resistance detection module. The resistance detection module receives the resistance data detected by the resistance detection device and sends it to the control module. The control module compares the resistance value with a set threshold. If the resistance value is greater than or equal to the threshold, the control module triggers a humidity detection signal and sends it to the humidity detection module. If the resistance value is less than the threshold, the control module triggers an air pump start signal and sends it to the air pump start module.

[0027] S3.2: After receiving the humidity detection signal, the humidity detection module transmits the humidity data detected by the humidity sensor to the control module. The control module compares the humidity value with a set threshold. If the humidity value is greater than or equal to the threshold, the control module triggers a temperature detection signal and sends it to the temperature detection module. If the humidity value is less than the threshold, the control module triggers a water pump start signal and sends it to the water pump start module.

[0028] S3.3: After receiving the temperature detection signal, the temperature detection module transmits the temperature data detected by the temperature sensor to the control module. The control module compares the temperature value with the set threshold. When the temperature is less than the threshold, the control module triggers the heating start signal and sends it to the heating start module. When the temperature is greater than or equal to the threshold, S3.1-S3.3 are repeated. This can ensure that the temperature, humidity and contact pressure with the concrete surface of the intelligent curing equipment are always maintained at the optimal values ​​during curing.

[0029] The intelligent tunnel lining maintenance equipment and maintenance method provided by the present invention adopt carbon nanotube films as heating elements, have good flexibility and bending characteristics, high electric heat conversion efficiency, high heating rate, and high heat transfer efficiency, can evenly complete the heating task in a short time, and improve the maintenance efficiency; during maintenance, the moisturizing layer is tightly fitted to the lining concrete, and the maintenance humidity and temperature are intelligently controlled, so that the lining concrete is cured under constant temperature and humidity conditions, greatly improving the maintenance effect, saving energy and protecting the environment, and having good technological advancement. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0031] FIG1 is a schematic structural diagram of an intelligent tunnel lining maintenance device provided by the present invention;

[0032] FIG2 is a schematic structural diagram of the intelligent tunnel lining maintenance equipment provided by the present invention when not in use;

[0033] FIG3 is a schematic diagram of a first arrangement of heating elements in the intelligent tunnel lining maintenance device provided by the present invention;

[0034] FIG4 is a schematic diagram of a second arrangement of heating elements in the intelligent tunnel lining maintenance device provided by the present invention;

[0035] FIG5 is a schematic diagram of a third arrangement of heating elements in the intelligent tunnel lining maintenance device provided by the present invention;

[0036] FIG6 is a schematic diagram of a fourth arrangement of heating elements in the intelligent tunnel lining maintenance device provided by the present invention;

[0037] FIG7 is a schematic diagram of the connection structure of the intelligent controller in the intelligent tunnel lining maintenance equipment provided by the present invention;

[0038] FIG8 is a schematic diagram of the working process of the intelligent controller in the intelligent tunnel lining maintenance equipment provided by the present invention;

[0039] FIG9 is a schematic structural diagram of a strength detection component in an intelligent tunnel lining maintenance device provided by the present invention.

[0040] Illustrations: Equipment mobile frame 100, air bag 200, insulation layer 300, heating layer 400, moisture-retaining layer 500, intelligent controller 600, strength detection component 700, mobile terminal 800, lining concrete 900; air pump 210, heating element 410, resistance detection device 420, temperature sensor 520, humidity sensor 530, water pump 540, control module 610, resistance detection module 620, temperature detection module 630, humidity detection module 640, start input module 650, air pump start module 660, water pump start module 670, heating start module 680, transmitter 710, detector 720, strength detection module 730, transmitter start module 740, steel ball 750. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0042] Referring to FIG1 , it is a schematic structural diagram of the intelligent tunnel lining maintenance equipment provided by the present invention.

[0043] As can be seen from the diagram, the intelligent tunnel lining maintenance equipment provided by the present invention includes seven components: an equipment moving frame 100, an air bag 200, an insulation layer 300, a heating layer 400, a moisturizing layer 500, an intelligent controller 600, and a strength detection component 700.

[0044] The inflatable bag 200 , the heat-insulating layer 300 , the temperature-raising layer 400 , and the moisture-retaining layer 500 are fixedly arranged on the equipment moving frame 100 in order from bottom to top.

[0045] As shown in Figure 2, when not in use, the inflatable bag 200 is deflated, the insulation layer 300, the heating layer 400 and the moisturizing layer 500 shrink and are in close contact with the equipment moving frame 100. At this time, there is a certain gap (such as 50 cm) between the outer surface of the moisturizing layer 500 and the surface of the lining concrete 900. During maintenance, the inflatable bag 200 expands when inflated, so that the moisturizing layer 500 is in close contact with the lining concrete 900.

[0046] As shown in Figure 2, the equipment mobile frame 100 is the main structure used to carry other components. This solution preferably uses a steel structure, which is welded with I-beams or steel sections. Under the combined effect of the deadweight of each component and the working load, the strength and rigidity of the equipment mobile frame 100 meet the regulatory requirements.

[0047] A traveling mechanism is installed at the bottom of the equipment moving frame 100, and the traveling mechanism can be self-powered or unpowered.

[0048] In actual application, the equipment moving frame 100 can be pushed to move to the lining concrete 900 that needs to be cured, and the mobile device frame 100 can be fixed. The moisturizing layer 500 fixed on the top layer of the equipment moving frame 100 can be brought into contact with the surface of the lining concrete 900 to perform curing operations.

[0049] Furthermore, the bottom of the inflatable bag 200 is fixed to the equipment mobile frame 100. The inflatable bag 200 is used to adjust the distance between the moisturizing layer 500 and the surface of the lining concrete 900. The inflatable bag 200 can be a cloth airbag, and a flexible plastic layer is coated on the cloth airbag. The maximum allowable inflation pressure is preferably ≥5kPa, and the inflation deformation is preferably ≥30cm.

[0050] The inflatable bag 200 is connected to the air pump 210, and the air pump 210 is connected to the intelligent controller 600. The intelligent controller 600 can control the start and stop of the air pump 210. By starting the air pump 210, the inflatable bag 200 can be inflated, thereby changing the internal air pressure of the inflatable bag 200. By changing the air pressure, the contact pressure between the moisturizing layer 500 and the surface of the lining concrete 900 can be adjusted.

[0051] The bottom of the thermal insulation layer 300 is fixed to the top of the inflatable bag 200. The thermal insulation layer 300 is used to reduce heat loss and maintain temperature stability. The thermal insulation layer 300 is preferably made of a sandwich color steel plate layer.

[0052] The bottom of the heating layer 400 is fixed on the top of the insulation layer 300. The heating layer 400 is composed of two waterproof layers and a heating element 410. The two waterproof layers are respectively wrapped on both sides of the heating element 410. The heating element 410 is located in the middle of the two waterproof layers. The waterproof layer is used to waterproof the heating element 410. The waterproof level reaches IP68 to prevent the heating element 410 from being affected by the moisturizing layer 500.

[0053] The heating element 410 is a carbon nanotube film, which has good flexibility and bending properties and good durability; it has high electrothermal conversion efficiency, fast heating speed and high heat transfer efficiency, and the time for heating from 0°C to 45°C is no more than 3 minutes.

[0054] The carbon nanotube film is composed of a plurality of carbon nanotubes, and the carbon nanotubes may be one or more of single-walled carbon nanotubes, double-walled carbon nanotubes, and multi-walled carbon nanotubes.

[0055] Furthermore, the carbon nanotube film can be arranged in a variety of ways, as shown in Figures 5 and 6. The carbon nanotube film can be arranged in a full-coverage or zigzag pattern with individual carbon nanotubes.

[0056] As shown in FIG3 and FIG4 , a plurality of carbon nanotubes may be arranged in sequence to form a stripe-shaped or matrix-shaped distribution.

[0057] The heating element 410 is connected to the intelligent controller 600, which can control the start and stop of the heating element 410. When the heating element 410 is turned on, the heating element 410 heats up and transfers the temperature to the humidifying layer 500, so that the humidifying layer 500 is always maintained at the optimal temperature, greatly improving the curing effect of the lining concrete 900.

[0058] When the intelligent controller 600 supplies power to the heating element 410 , the heating element 410 turns on and performs heating. When the intelligent controller 600 supplies power to the heating element 410 , the heating element 410 stops heating.

[0059] A resistance detection device 420 is also provided in the heating layer 400. The resistance detection device 420 is arranged between the two waterproof layers and is respectively connected to the heating element 410 and the intelligent controller 600. The resistance detection device 420 can detect the resistance of the heating element 410 in real time and transmit the resistance information to the intelligent controller 600.

[0060] When the heating element 410 is under pressure, the resistance is proportional to the pressure. The intelligent controller 600 can know the pressure of the contact surface between the humidifying layer 500 and the lining concrete 900 based on the resistance value detected by the resistance detection device 420, and then the intelligent controller 600 adjusts the pressure of the contact surface between the humidifying layer 500 and the lining concrete 900 by controlling the start and stop of the air pump 210.

[0061] The bottom of the moisturizing layer 500 is fixed to the top of the temperature-raising layer 400 , and the top of the moisturizing layer 500 is used to contact the surface of the lining concrete 900 for maintenance operations.

[0062] The moisturizing layer 500 includes a porous absorption layer, a temperature sensor 520, a humidity sensor 530 and several water supply pipes. The temperature sensor 520, the humidity sensor 530 and the several water supply pipes are all arranged inside the porous water absorption layer. The water supply pipe is provided with several drainage holes and is connected to the water pump 540. The temperature sensor 520 and the humidity sensor 530 are used to detect the current temperature and humidity of the moisturizing layer 500. By starting the water pump 540, water can be sprayed from the drainage holes into the moisturizing layer 500, which can increase the humidity of the moisturizing layer 500.

[0063] The temperature sensor 520, the humidity sensor 530 and the water pump 540 are respectively connected to the intelligent controller 600. The temperature sensor 520 and the humidity sensor 530 can transmit the detected temperature and humidity data to the intelligent controller 600 in real time. The intelligent controller 600 can control the start and stop of the heating element 410 and the water pump 540 based on the temperature and humidity data, thereby ensuring that the temperature and humidity of the moisturizing layer 500 are maintained at the optimal value.

[0064] The porous water-absorbing layer is preferably composed of a sponge wrapped with geotextile in this solution, and the water supply pipe is preferably a galvanized steel pipe, and the drainage holes thereon are arranged in sequence at equal intervals, preferably at an interval of one meter.

[0065] Intelligent controller 600 receives resistance data from carbon nanotube film 410 and temperature and humidity data from moisture-retaining layer 500. It regulates the pressure at the interface between moisture-retaining layer 500 and concrete lining 900 by controlling the on / off cycles of air pump 210, maintaining it at an optimal 0.5 kPa. It also maintains a curing temperature of 20 ± 2°C by controlling the on / off cycles of carbon nanotube film 410. It also maintains saturation of moisture-retaining layer 500 by controlling the on / off cycles of water pump 540.

[0066] The strength detection assembly 700 is disposed on the mobile equipment frame 100 and is used to detect the strength of the lining concrete 900 .

[0067] The curing equipment in the prior art all uses a fixed curing time (for example, fixed at 2 or 3 days). The intelligent curing equipment provided by the present invention is provided with a strength detection component 700. When the concrete strength reaches a threshold, it indicates that the curing requirements have been met. The intelligent controller 600 controls all components to stop working. This ensures the curing strength of the concrete while also saving energy and being environmentally friendly.

[0068] As shown in Figure 9, the strength detection assembly 700 includes a transmitter 710 and a detector 720. Both transmitter 710 and detector 720 are mounted on the mobile equipment rack 100. The transmitter 710 cooperates with the detector 720. The transmitter 710 can launch a steel ball 750 (the energy launched by the steel ball 750 is fixed) toward the lining concrete 900. The detector 720 can detect the rebound distance of the steel ball 750 to infer the strength of the lining concrete 900. The greater the rebound distance of the steel ball 750, the higher the strength. In this way, the strength of the lining concrete 900 can be judged based on the rebound distance.

[0069] The transmitter 710 and the detector 720 are electrically connected to the intelligent controller 600 respectively. The intelligent controller 600 can control the transmitter 710 to work. The transmitter 710 launches a steel ball 750 toward the lining concrete 900. The detector 720 detects the rebound distance of the steel ball 750 and transmits the rebound distance data to the intelligent controller 600. The intelligent controller 600 can judge whether the concrete meets the maintenance requirements based on the rebound distance data.

[0070] The intelligent controller 600 includes a control module 610, a resistance detection module 620, a temperature detection module 630, a humidity detection module 640, a start input module 650, an air pump start module 660, a water pump start module 670, a heating start module 680, an intensity detection module 730, and a transmitter start module 740.

[0071] The control module 610 is respectively connected to the resistance detection module 620, the temperature detection module 630, the humidity detection module 640, the start input module 650, the air pump start module 660, the water pump start module 670, the heating start module 680, the strength detection module 730, and the transmitter start module 740. The control module 620 has a built-in program and can set parameters for the program. By starting the input module 650, the control module 610 can be started to control the above modules to perform intelligent maintenance operations based on the program.

[0072] The resistance detection module 620 is connected to the resistance detection device 420, and the air pump starting module 670 is connected to the air pump 210. The resistance detection module 620 is used to receive the resistance data detected by the resistance detection device 420 and transmit it to the control module 610. The control module 610 processes and determines based on the resistance data and controls the start and stop of the air pump 210 through the air pump starting module 670 to maintain the optimal pressure at the contact surface between the moisture-retaining layer 500 and the lining concrete 900.

[0073] The temperature detection module 630 is connected to the temperature sensor 520, and the heating start module 680 is connected to the heating element 410. The temperature detection module 630 is used to receive the temperature data detected by the temperature sensor 520 and transmit it to the control module 610. The control module 610 processes and judges based on the temperature data, and controls the start and stop of the heating element 410 through the heating start module 680 to ensure that the temperature of the moisturizing layer 500 is always at the optimal maintenance temperature.

[0074] The humidity detection module 640 is connected to the humidity sensor 530, and the water pump starting module 670 is connected to the water pump 540. The humidity detection module 640 is used to receive the humidity data detected by the humidity sensor 530 and transmit it to the control module 610. The control module 610 processes and judges based on the humidity data, and controls the start and stop of the water pump 540 through the water pump starting module 670 to ensure that the humidity of the moisturizing layer 500 is always maintained at the optimal maintenance humidity.

[0075] The strength detection module 730 is connected to the detector 720, and the transmitter start module 740 is connected to the transmitter 710. The control module 610 can control the start of the transmitter 710 through the transmitter start module 740. The strength detection module 730 is used to receive the rebound distance data of the steel ball 750 detected by the detector 720 and transmit it to the control module 610. The control module 610 processes the rebound distance of the steel ball 750 to determine whether the curing of the lining concrete 900 is completed.

[0076] In order to further improve the efficiency in actual application, the intelligent maintenance equipment provided by the present invention also includes a mobile terminal 800. The mobile terminal 800 is wirelessly connected to the control module 610. When the maintenance is completed, the control module 610 sends a corresponding end signal to the mobile terminal 800. The staff can promptly learn the maintenance end information so as to carry out the maintenance of the next lining concrete 900. This can greatly improve the efficiency of maintenance and save energy.

[0077] This solution does not limit the specific structure of the mobile terminal 800, which can be determined according to actual needs. For example, the mobile terminal 800 can be a mobile phone, a notebook, a tablet computer, etc.

[0078] For the intelligent maintenance equipment for tunnel lining given in this example, this example also further provides a corresponding maintenance plan.

[0079] S1: Move the tunnel lining intelligent maintenance equipment to the bottom of the tunnel lining to be maintained by the equipment moving frame 100, and fix the equipment moving frame 100;

[0080] S2: Connect water and electricity, and check the working status of each component of the tunnel lining intelligent maintenance equipment;

[0081] S3: Input curing parameters to the control module 610, bring the moisture-retaining layer 500 into contact with the surface of the lining concrete 900, and activate the input module 650 to implement intelligent curing based on the control module 610 and the program;

[0082] S4: When the time specified by the parameters is reached, the control module 610 triggers the transmitter start signal and sends it to the transmitter start module 740. The transmitter start module 740 controls the transmitter 710 to start, and the transmitter 710 launches the steel ball 750 to the lining concrete 900. The detector 720 detects the rebound distance of the steel ball 750 and sends it to the strength detection module 730. The strength detection module 730 transmits the rebound distance data to the control module 610. The control module 610 compares the rebound distance value with the set threshold value. When it is less than the threshold value, the control module 610 triggers the transmitter start signal to the transmitter start module 740. When it is greater than or equal to the threshold value, the control module 610 triggers the end of maintenance signal and sends it to the mobile terminal 800. The control module 610 controls all components to stop working, and the maintenance is completed.

[0083] S5: Move the tunnel lining intelligent maintenance equipment to the next tunnel lining and repeat steps S1-S4.

[0084] Furthermore, as shown in FIG8 , the specific process of intelligent maintenance in S3 includes:

[0085] S3.1: Control module 610 sends a resistance detection signal to resistance detection module 620. Resistance detection module 620 receives resistance data detected by resistance detection device 420 and sends it to control module 610. Control module 610 compares the resistance value with a set threshold. If the resistance value is greater than or equal to the threshold, control module 610 triggers a humidity detection signal and sends it to humidity detection module 640. If the resistance value is less than the threshold, control module 610 triggers an air pump start signal and sends it to air pump start module 660.

[0086] S3.2: After receiving the humidity detection signal, the humidity detection module 640 transmits the humidity data detected by the humidity sensor 530 to the control module 610. The control module 610 compares the humidity value with a set threshold. If the humidity value is greater than or equal to the threshold, the control module 610 triggers a temperature detection signal to be sent to the temperature detection module 630. If the humidity value is less than the threshold, the control module 610 triggers a water pump start signal and sends it to the water pump start module 670.

[0087] S3.3: After receiving the temperature detection signal, the temperature detection module 630 transmits the temperature data detected by the temperature sensor 520 to the control module 610. The control module 610 compares the temperature value with the set threshold. When the temperature is less than the threshold, the control module triggers a heating start signal and sends it to the heating start module 680. When the temperature is greater than or equal to the threshold, S3.1-S3.3 are repeated. This ensures that the temperature, humidity, and contact pressure with the concrete surface of the intelligent curing equipment are always maintained at optimal values ​​during curing.

[0088] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent maintenance device for tunnel lining, characterized in that, it includes an intelligent controller, a strength detection component, a device moving frame, and an air-filled bag, a heat preservation layer, a heating layer, and a humidity preservation layer that are sequentially fixed on the device moving frame from bottom to top. The strength detection component is arranged on the device moving frame and is used to detect the strength of the lining concrete. The humidity preservation layer is used to contact the surface of the lining concrete for maintenance operations. The air-filled bag is connected to an air pump, and the air pump can adjust the contact pressure between the humidity preservation layer and the surface of the lining concrete. A heating element is arranged in the heating layer, and the heating element is connected to a resistance detection device. A temperature and humidity sensor and a water supply pipe are arranged in the humidity preservation layer. The water supply pipe is connected to a water supply pump. The intelligent controller is electrically connected to the air pump, the heating element, the resistance detection device, the temperature and humidity sensor, the strength detection component, and the water supply pump respectively. The temperature and humidity sensor can send the temperature and humidity information of the humidity preservation layer to the intelligent controller in real time. The intelligent controller can control the start and stop of the heating element and the water pump based on the temperature and humidity information. The resistance detection device can send the resistance information of the heating element to the intelligent controller. The intelligent controller can know the contact pressure between the humidity preservation layer and the surface of the lining concrete based on the resistance value and control the start and stop of the air pump.

2. The intelligent maintenance device for tunnel lining according to claim 1, characterized in that, the heating layer is composed of two waterproof layers and a heating element. The two waterproof layers are respectively coated on both sides of the heating element. The heating element is located in the middle of the two waterproof layers. The heating element is connected to the intelligent controller. The heating element is connected to a resistance detection device. The resistance detection device is arranged between the two waterproof layers and is respectively connected to the heating element and the intelligent controller. The resistance detection device can detect the resistance of the heating element in real time and transmit the resistance information to the intelligent controller.

3. The intelligent maintenance device for tunnel lining according to claim 2, characterized in that, the heating element is a carbon nanotube film, and the carbon nanotube film is composed of a plurality of carbon nanotubes. The carbon nanotubes can be one or more of single-walled carbon nanotubes, double-walled carbon nanotubes, and multi-walled carbon nanotubes.

4. The intelligent maintenance device for tunnel lining according to claim 3, characterized in that, the carbon nanotube film can be distributed in a loop or full distribution by a single carbon nanotube, or a plurality of carbon nanotubes are arranged in sequence in a strip or matrix distribution.

5. The intelligent maintenance device for tunnel lining according to claim 1, characterized in that, the humidity preservation layer includes a porous absorption layer, a temperature sensor, a humidity sensor, and a plurality of water supply pipes. The temperature sensor, the humidity sensor, and the plurality of water supply pipes are all arranged inside the porous water absorption layer. A plurality of drainage holes are arranged on the water supply pipe and are connected to the water pump. The temperature sensor, the humidity sensor, and the water pump are respectively connected to the intelligent controller. The temperature sensor and the humidity sensor can transmit the detected temperature and humidity data to the intelligent controller in real time. The intelligent controller can control the start and stop of the heating element and the water pump based on the temperature and humidity data.

6. The intelligent maintenance device for tunnel lining according to claim 1, characterized in that, The strength detection component includes a transmitter and a detector. Both the transmitter and the detector are arranged on the mobile device rack and are electrically connected to the intelligent controller respectively. The start and stop of the transmitter can be controlled through the intelligent controller. When the transmitter starts, it can launch steel balls towards the concrete. The detector detects the rebound distance of the steel balls and transmits the rebound distance data to the intelligent controller.

7. The intelligent tunnel lining maintenance equipment according to claim 1, characterized in that the intelligent controller includes a control module, a resistance detection module, a temperature detection module, a humidity detection module, a start input module, an air pump start module, a water pump start module, a heating start module, a strength detection module, and a transmitter start module; the control module is respectively connected to the resistance detection module, the temperature detection module, the humidity detection module, the start input module, the air pump start module, the water pump start module, and the heating start module. The strength detection module and the transmitter start module have built-in programs in the control module. The programs can set parameters. Through the start input module, the control module can be started based on the program to control the above-mentioned various modules to perform intelligent maintenance operations; the resistance detection module is connected to the resistance detection device, and the air pump start module is connected to the air pump. The resistance detection module is used to receive the resistance data detected by the resistance detection device and transmit it to the control module. The control module processes and judges based on the resistance data and controls the start and stop of the air pump through the air pump start module, so as to keep the pressure at the contact surface between the moisture preservation layer and the lining concrete at the optimal value; the temperature detection module is connected to the temperature sensor, and the heating start module is connected to the heating element. The temperature detection module is used to receive the temperature data detected by the temperature sensor and transmit it to the control module. The control module processes and judges based on the temperature data and controls the start and stop of the heating element through the heating start module, so that the temperature of the moisture preservation layer is always at the optimal maintenance temperature; the humidity detection module is connected to the humidity sensor, and the water pump start module is connected to the water pump. The humidity detection module is used to receive the humidity data detected by the humidity sensor and transmit it to the control module. The control module judges and processes based on the humidity data and controls the start and stop of the water pump through the water pump start module, so that the humidity of the moisture preservation layer is always maintained at the optimal maintenance humidity; the strength detection module is connected to the detector, and the transmitter start module is connected to the transmitter. The control module can control the start and stop of the transmitter through the transmitter start module. The strength detection module is used to receive the steel ball rebound distance data detected by the detector and transmit it to the control module. The control module processes and judges based on the steel ball rebound distance to determine whether the concrete maintenance is completed.

8. The intelligent tunnel lining maintenance equipment according to claim 1, characterized in that the intelligent maintenance equipment further includes a mobile terminal, and the mobile terminal is wirelessly communicatively connected to the control module.

9. A maintenance method for an intelligent tunnel lining maintenance equipment, characterized in that it includes: S1: Move the intelligent tunnel lining maintenance equipment to the lower part of the tunnel lining to be maintained through the equipment moving rack, and fix the mobile device rack; S2: Connect water and electricity, and check the working status of each component of the intelligent tunnel lining maintenance equipment; S3: Input the curing parameters into the control module, bring the moisture preservation layer into contact with the concrete surface, and through starting the input module, intelligent curing can be realized based on the control module and the program; S4: When the specified time of the parameters is reached, the control module triggers the start signal of the emitter and sends it to the emitter start module. The emitter start module controls the start of the emitter. The emitter launches steel balls onto the lining concrete. The detector detects the steel ball rebound distance data and sends it to the strength detection module. The strength detection module transmits the rebound distance data to the control module. The control module compares the rebound distance with the set threshold. When it is less than the threshold, the control module triggers the start signal of the emitter and sends it to the emitter start module. When it is greater than or equal to the threshold, the control module triggers the end curing signal and sends it to the mobile terminal. The control module controls all components to stop working and the curing ends; S5: Move the intelligent curing equipment for tunnel lining to the next slab of tunnel lining and repeat steps S1 - S4.

10. The curing method of the intelligent curing equipment for tunnel lining according to claim 9, wherein, the specific process of the intelligent curing in S3 includes: S3.1: The control module sends a resistance detection signal to the resistance detection module. The resistance detection module receives the resistance data detected by the resistance detection equipment and sends it to the control module. The control module compares the resistance value with the set threshold. When it is greater than or equal to the threshold, the control module triggers a humidity detection signal and sends it to the humidity detection module. When it is less than the threshold, the control module triggers an air pump start signal and sends it to the air pump start module; S3.2: After receiving the humidity detection signal, the humidity detection module transmits the humidity data detected by the humidity sensor to the control module. The control module compares the humidity value with the set threshold. When it is greater than or equal to the threshold, the control module triggers a temperature detection signal and sends it to the temperature detection module. When it is less than the threshold, the control module triggers a water pump start signal and sends it to the water pump start module; S3.3: After receiving the temperature detection signal, the temperature detection module transmits the temperature data detected by the temperature sensor to the control module. The control module compares the temperature value with the set threshold. When it is less than the threshold, the control module triggers a heating start signal and sends it to the heating start module. When it is greater than or equal to the threshold, repeat S3.1 - S3.3, which can make the temperature, humidity and the contact pressure with the concrete surface of the intelligent curing equipment always remain at the optimal values during curing.

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