A two-lining intelligent construction method

Abstract

The application relates to a two-lining intelligent construction method, which comprises the following steps: S1. trolley walking, the walking mechanism of the two-lining trolley is in the form of a steering wheel; S2. trolley positioning, the two-lining trolley is positioned according to the center line of the two-lining trolley and the center line of the tunnel; S3. trolley formwork; S4. pouring and vibrating, synchronous vibrating is realized by controlling a vibrating rod through a vibrating mechanical arm on the two-lining trolley; S5. automatic window closing, the window is automatically closed through a window closing hydraulic equipment on the two-lining trolley; S6. pouring monitoring, a sensor monitoring system is installed on the two-lining trolley, the pouring progress and the pouring quality are monitored in real time, and feedback is given to the corresponding control system; and S7. trolley formwork removal. The vibrating mechanical arm is used for controlling the vibrating rod to vibrate, and the window closing hydraulic equipment is used for automatically closing the window, so that manual operation is not needed, and the construction quality can be guaranteed; and the sensor monitoring system is used for monitoring the pouring progress and the pouring quality in real time, so that the two-lining construction can be automated, dataized and intelligentized.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel construction, and in particular to an intelligent construction method for a secondary lining. Background Art

[0002] Tunnel engineering is a vital component of modern transportation networks, and secondary lining construction techniques are crucial for ensuring project quality and safety. This method involves using concrete or reinforced concrete for secondary lining, in addition to initial support. Its primary purpose is to improve the strength, stability, and durability of the tunnel structure, prevent surrounding rock deformation or collapse, and ensure driving safety. Therefore, the secondary lining pouring method is crucial for ensuring tunnel lining quality.

[0003] The traditional tunnel secondary lining construction pouring process is as follows: steel bar binding, the secondary lining trolley is moved to the designated position using heavy steel rails, manual positioning is carried out using the trolley centerline, the secondary lining trolley is manually operated with a hydraulic jack for formwork support, waterstop installation and formwork renovation, embedded parts installation, spraying of release agent, installation of end formwork, trolley reinforcement, installation of concrete delivery pipelines, manual pouring and vibration of concrete, standard maintenance, and manual formwork removal and closing.

[0004] However, traditional construction is mostly manual, and the lighting at the construction site is dim. The current trolley structure is complex, the manual operation space is limited, and the operating range is small, which is not conducive to concrete pouring and vibration. As a result, the second lining trolley template cannot be accurately operated during installation and reinforcement, and the quality of the second lining is poor during vibration and dismantling. At the same time, the operation process of the second lining trolley is mostly manual, with a low degree of automation and high labor intensity. Its walking, positioning, formwork, end sealing, pouring, demoulding, and maintenance processes are mainly based on manual experience and judgment. With the aggravation of the aging population and the high-altitude environment, the tunnel second lining construction personnel will also face a talent gap. Moreover, the second lining concrete is often vibrated manually. The person needs to stand on the operating platform and hold the vibrating rod to vibrate. In addition, in high-altitude areas, people are often in a state of hypoxia, and vibration leakage often occurs, resulting in the honeycomb surface phenomenon of the second lining, affecting the quality of the second lining.

[0005] Therefore, it is necessary to improve the current secondary lining construction process to enhance the degree of construction automation, reduce labor intensity, and improve the efficiency and quality of secondary lining construction, and transform the construction process towards informatization, intelligence, digitization and automation. Summary of the Invention

[0006] In order to improve the degree of construction automation, reduce labor intensity, and improve the secondary lining construction efficiency and construction quality, the present application provides a secondary lining intelligent construction method.

[0007] This application provides a secondary lining intelligent construction method that adopts the following technical solutions:

[0008] A secondary lining intelligent construction method comprises the following steps:

[0009] S1. The trolley is used to move the secondary lining trolley. The trolley is controlled to move along the parameter trajectory to the pouring position.

[0010] S2. Trolley positioning: After the secondary lining trolley reaches the designated position, it is positioned according to the centerline of the secondary lining trolley and the centerline of the tunnel;

[0011] S3 trolley formwork, through the hydraulic cylinder on the second lining trolley control template automatic formwork, in accordance with the top mold, side mold, end mold order start automatic formwork;

[0012] S4 pouring and vibrating, align the concrete pump pipe with each window, pouring concrete from the bottom right to the top, pouring concrete on both sides simultaneously; while pouring, the vibrating arm on the second lining trolley controls the vibrating rod for synchronous vibration;

[0013] S5. Automatically seal the windows. After the pouring and vibration of each window is completed, the windows are automatically closed by the hydraulic device on the second lining trolley;

[0014] S6. Pouring monitoring: a sensor monitoring system is installed on the secondary lining trolley to monitor the pouring progress and quality in real time and provide feedback to the corresponding control system;

[0015] S7. After the concrete pouring is completed, the trolley automatically retracts the end formwork, top formwork, and side formwork.

[0016] Furthermore, in step S1 and step S2, the coordinates of the tunnel centerline are input into the trolley positioning control program, and the coordinates of the centerline of the secondary lining trolley are positioned in real time. The travel route and direction of the secondary lining trolley are controlled by the positioning control program so that the centerline of the secondary lining trolley is kept coincident with the centerline of the tunnel during the travel process and after the secondary lining trolley reaches the designated position.

[0017] Furthermore, in step S4, a row of slide rails is installed at the position of the second lining trolley corresponding to each layer of windows, and the vibrating robot arm is driven by a motor to slide and install on the slide rails. After the vibrating robot arm controls the vibrating rod to vibrate a window, the vibrating robot arm is driven by the motor to move to the next window on the slide rail and vibrate.

[0018] Furthermore, the vibrating robot arm and the vibrating rod mounted thereon are controlled by a vibration control program, in which vibration range, vibration time and vibration frequency data are pre-inputted.

[0019] Furthermore, the vibration control program is also configured to record each vibration data, which at least includes vibration range, vibration time, and vibration frequency, and analyze the optimal vibration time and vibration frequency through feedback on the secondary lining pouring quality.

[0020] Furthermore, in step S6, the sensor monitoring system includes a liquid level sensor installed below each window of the secondary lining trolley, and the liquid level sensor and the window closing hydraulic device are connected to the window closing control program;

[0021] The window closing control program is configured to control the corresponding window closing hydraulic device to close the window corresponding to the liquid level sensor when the liquid level sensor detects the pouring of concrete.

[0022] Furthermore, in step S6, the secondary lining trolley is positioned on the upper secondary lining and fixed at the joint of the secondary lining trolley using a soft overlap, the sensor monitoring system includes a pressure sensor embedded in the soft overlap, and the pressure sensor and the jacking system of the secondary lining trolley are connected to the jacking control program;

[0023] The jacking control program is configured to control the jacking system of the secondary lining trolley to stop jacking when the pressure sensor detects that the internal pressure value of the soft overlap exceeds a set pressure value.

[0024] Furthermore, in step S6, the sensor monitoring system includes a microwave flowmeter installed at the arch top position of the secondary lining trolley, and the microwave flowmeter monitors the arch top concrete pouring flow in real time to control the arch top concrete pouring rate to prevent insufficient or excessive concrete pouring.

[0025] Furthermore, the sensor monitoring system is also connected to an alarm control system. When the sensor monitoring system detects an abnormal item or a set item, the alarm control system controls the alarm to operate.

[0026] In summary, the beneficial technical effects of this application are:

[0027] 1. By adopting steerable running wheels to replace traditional rail travel, the position can be adjusted more flexibly, and the designated position can be reached and well-centered according to the instructions of the trolley positioning control program without manual adjustment. It can solve the problem of inflexible rail travel and inadequate steering during traditional secondary lining construction. Moreover, through the setting of the trolley positioning control program, the automatic travel of the secondary lining trolley can be realized, and during the travel, the travel trajectory and positioning of the secondary lining trolley can be corrected in real time by simply aligning the center line of the secondary lining trolley with the center line of the tunnel. There is no need for expensive and high-maintenance satellite positioning systems for positioning. It is especially suitable for construction environments with weak or no signal strength in closed tunnels. While ensuring construction quality, it effectively controls construction costs;

[0028] 2. By adopting a vibrating robot arm equipped with a vibrating rod to replace manual vibration, it is possible to avoid the dependence of manual vibration on the work experience, physical strength and effective operating space of the construction workers, so that the second lining intelligent construction method of the present application can get rid of the traditional operation mode of exchanging labor for high-quality and high-efficiency construction to the greatest extent, which can not only reduce labor intensity, but also improve the construction efficiency and quality of the second lining; the vibration control program controls the operation of the vibrating robot arm and the vibrating rod installed thereon, so that the vibrating robot arm can move to the working window independently, and control the vibrating rod to work at the set vibration time and vibration frequency, and during the vibration process, by moving the vibrating robot arm and adjusting the inclination angle of the vibrating rod, effective and sufficient vibration can be achieved within the set vibration range, which can effectively solve the problems of missed vibration and small vibration range existing in traditional manual vibration, and can greatly improve the vibration quality in the second lining construction;

[0029] 3. By recording various vibration data through the vibration control program, feedback on the secondary lining pouring quality can be used to analyze the optimal vibration time and frequency, thereby further improving the vibration quality in the subsequent secondary lining construction. This can form a trend that the longer the construction section, the higher the pouring and vibration quality. The relevant data can also be used as a reference for vibration data in other construction projects, ensuring the construction quality of similar projects and helping to improve the dataization capabilities of secondary lining construction.

[0030] 4. By setting up liquid level sensors, the progress of each layer of concrete pouring can be monitored in real time. When the concrete is poured in place, the window closing control program automatically controls the corresponding window closing hydraulic equipment to close the window corresponding to the liquid level sensor, which can effectively prevent concrete from overflowing from the window. No human supervision is required during the pouring process, further reducing the workload of construction workers.

[0031] 5. By setting up a microwave flowmeter, the pouring flow rate of the vault concrete can be monitored in real time to ensure that the concrete is poured at a predetermined rate to ensure the uniformity and density of the concrete; and the data provided by the microwave flowmeter can help construction personnel adjust the pouring speed in a timely manner to ensure a smooth pouring process, which can reduce problems such as concrete stratification, segregation or bubble generation caused by improper pouring speed, and prevent excessive or insufficient pouring of concrete, avoiding unnecessary pressure on the tunnel structure or affecting the structural design, thereby improving the quality of the secondary lining concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the construction process of an embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the assembly of the secondary lining trolley and the pouring formwork in an embodiment of the present application;

[0034] Figure 3 This is a schematic diagram of the assembly position of the window closing hydraulic device according to an embodiment of the present application;

[0035] Figure 4 This is a schematic diagram of the assembly positions of the liquid level sensor and microwave flowmeter according to an embodiment of the present application.

[0036] Description of reference numerals:

[0037] 1. Second lining trolley; 2. Top mold; 3. First side mold; 4. Second side mold; 5. End mold; 6. Vibrating robot arm; 7. Window closing hydraulic equipment; 8. Pressure sensor; 9. Liquid level sensor; 10. Microwave flowmeter. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0039] The embodiment of the present application discloses a second lining intelligent construction method. Figure 1 and Figure 2 , which includes the following steps:

[0040] S1. The trolley moves. The travel mechanism of the secondary lining trolley 1 is selected to be a steering wheel structure. The steering wheel is controlled by a motor to move. The secondary lining trolley 1 is controlled to reach the pouring position along the parameter trajectory.

[0041] S2. Trolley positioning: After the secondary lining trolley 1 arrives at the designated position, it is positioned according to the center line of the secondary lining trolley 1 and the center line of the tunnel.

[0042] S3. The trolley forms the template automatically by controlling the hydraulic cylinder on the secondary lining trolley 1, and automatically forms the template in the order of top form 2, side form, and end form 5; wherein the side form includes a first side form 3 and a second side form 4, which are arranged on both sides of the top form 2, and the end form 5 is also provided with two groups and is arranged on both sides of the top form 2, and the end form 5 is located between the top form 2 and the first side form 3 or the second side form 4. The top form 2, side form and end form 5 together enclose a semi-ring shape that is adapted to the tunnel construction.

[0043] S4. Pouring and vibrating: align the concrete pump pipe with each window and pour concrete from the lower right to the upper side, pouring on both sides simultaneously. Keep the pouring speed on both sides consistent during pouring; and while pouring, control the vibrating rod 6 on the second lining trolley 1 to perform synchronous vibration.

[0044] S5. Automatically close the windows. After the pouring and vibration of each layer of windows are completed, the windows are automatically closed by the window closing hydraulic device 7 on the second lining trolley 1.

[0045] S6. Pouring monitoring: A sensor monitoring system is installed on the secondary lining trolley 1 to monitor the pouring progress and quality in real time and provide feedback to the corresponding control system.

[0046] S7. After the concrete pouring is completed, the trolley 1 automatically retracts the end form 5, top form 2 and side form.

[0047] Among them, in step S1 and step S2, the coordinates of the center line of the tunnel are input into the trolley positioning control program, and the center line coordinates of the secondary lining trolley 1 are positioned in real time. The moving route and direction of the secondary lining trolley 1 are controlled by the positioning control program so that the center line of the secondary lining trolley 1 is kept coincident with the center line of the tunnel during the moving process and after moving to the designated position.

[0048] Therefore, when the secondary lining trolley 1 is traveling, the traditional steel rail travel is replaced by steerable traveling wheels, which can adjust the position more flexibly, and reach the designated position and maintain a good center positioning according to the instructions of the trolley positioning control program without manual adjustment. This can solve the problem of inflexible rail travel and inadequate steering during the traditional secondary lining construction process. Moreover, through the setting of the trolley positioning control program, the automatic travel of the secondary lining trolley 1 can be realized, and during the travel process, the travel trajectory and positioning of the secondary lining trolley 1 can be corrected in real time by a simple positioning method of aligning the center line of the secondary lining trolley 1 with the center line of the tunnel. There is no need for expensive and high-maintenance satellite positioning systems for positioning. It is especially suitable for construction environments with weak or no signal strength in closed tunnels. While ensuring construction quality, it effectively controls construction costs.

[0049] Moreover, during the pouring and vibration process, a vibrating rod is installed on the vibrating robot arm 6 to replace manual vibration, which can avoid the dependence of manual vibration on the work experience, physical strength and effective operating space of the construction workers. The second lining intelligent construction method of the present application can get rid of the traditional operation method of exchanging labor for high-quality and high-efficiency construction to the greatest extent, which can not only reduce labor intensity, but also improve the construction efficiency and quality of the second lining.

[0050] Similarly, the automatic closing of windows by the window-closing hydraulic device 7 on the secondary lining trolley 1 further reduces the work intensity of the construction workers, and thereby eliminates the need to set up a manual working platform on the secondary lining trolley 1. This further simplifies the structural setting of the secondary lining trolley 1, so that a larger vehicle passage can be reserved under the secondary lining trolley 1, creating space support for the simultaneous construction of multiple processes in the tunnel, and is more conducive to further improving the overall construction efficiency of the tunnel.

[0051] Moreover, in step S4, a row of slide rails is installed on the position of the second lining trolley 1 corresponding to each layer of windows, and the vibrating robot arm 6 is driven by a motor to slide and install on the slide rails. After the vibrating robot arm 6 controls the vibrating rod to vibrate a window, the vibrating robot arm 6 is driven by the motor to move to the next window on the slide rail and vibrate.

[0052] The vibrating arm 6 and the vibrating rod mounted thereon are controlled by a vibration control program. The vibration control program pre-enters the vibration range, vibration time, and vibration frequency data. The vibration control program allows the vibrating arm 6 and the vibrating rod to operate automatically without human intervention. The vibration control program is also configured to record each vibration data, which includes at least the vibration range, vibration time, and vibration frequency. Feedback on the secondary lining pouring quality is then used to analyze the optimal vibration time and frequency.

[0053] Therefore, the operation of the vibrating mechanical arm 6 and the vibrating rod installed thereon is controlled by the vibration control program, so that the vibrating mechanical arm 6 can be moved to the working window autonomously, and the vibrating rod can be controlled to work at the set vibration time and vibration frequency. Moreover, by moving the vibrating mechanical arm 6 and adjusting the inclination angle of the vibrating rod during the vibration process, effective and sufficient vibration can be achieved within the set vibration range, which can effectively solve the problems of missed vibration and small vibration range existing in traditional manual vibration, and can greatly improve the vibration quality in the secondary lining construction.

[0054] At the same time, by recording various vibration data through the vibration control program, feedback on the secondary lining pouring quality can be used to analyze the optimal vibration time and frequency, thereby further improving the vibration quality in the subsequent secondary lining construction. This can form a trend that the longer the construction section, the higher the pouring and vibration quality. The relevant data can also be used as a reference for vibration data in other construction projects, ensuring the construction quality of similar projects and helping to improve the dataization capabilities of secondary lining construction.

[0055] In addition, in order to fully improve the automation and intelligence level of the secondary lining intelligent construction method of this application.

[0056] Reference Figure 2 、 Figure 3 and Figure 4 In step S6, the sensor monitoring system includes a liquid level sensor 9 installed below each window of the secondary lining trolley 1, and the liquid level sensor 9 and the window closing hydraulic device 7 are connected to the window closing control program;

[0057] The window closing control program is configured to control the corresponding window closing hydraulic device 7 to close the window corresponding to the liquid level sensor 9 when the liquid level sensor 9 detects the pouring of concrete.

[0058] Therefore, under the control of the window closing control program, each time a layer of concrete is poured, the liquid level sensor 9 of the corresponding layer monitors the concrete liquid level of that layer in real time. Once the poured concrete liquid level approaches the lower edge of the window of that layer and is detected by the liquid level sensor 9, the window closing control program automatically controls the corresponding window closing hydraulic equipment 7 to close the window corresponding to the liquid level sensor 9, which can effectively prevent concrete from overflowing from the window. No personnel are required to be on duty during the pouring process, further reducing the workload of construction workers. Moreover, the reaction speed and operation speed of the window closing hydraulic equipment 7 controlled by the window closing control program are faster and more sensitive than manual operation, and there is no need to stop pouring midway, which can fully guarantee the efficiency of the second lining pouring.

[0059] And, in step S6, referring to Figure 2 The secondary lining trolley 1 is positioned on the upper plate of the secondary lining and fixed at the joint of the secondary lining trolley 1 by a soft overlap. The sensor monitoring system includes a pressure sensor 8 embedded in the soft overlap. The pressure sensor 8 and the jacking system of the secondary lining trolley 1 are connected to the jacking control program.

[0060] The jacking control program is configured so that when the pressure sensor 8 detects that the internal pressure value of the soft overlap exceeds the set pressure value, the jacking control program controls the jacking system of the secondary lining trolley 1 to stop jacking work to prevent the secondary lining trolley 1 from having too much pressure and cracking the upper secondary lining.

[0061] And, in step S6, referring to Figure 2 and Figure 4The sensor monitoring system includes a microwave flowmeter 10 installed at the arch position of the second lining trolley 1. The microwave flowmeter 10 monitors the arch concrete pouring flow in real time to control the arch concrete pouring rate to prevent insufficient or excessive concrete pouring.

[0062] Therefore, by setting up the microwave flowmeter 10, the pouring flow rate of the vault concrete can be monitored in real time to ensure that the concrete is poured at a predetermined rate to ensure the uniformity and density of the concrete; and the data provided by the microwave flowmeter 10 can help construction personnel adjust the pouring speed in time to ensure a smooth pouring process, which can reduce problems such as concrete stratification, segregation or bubble generation caused by improper pouring speed, and can prevent excessive or insufficient pouring of concrete, avoid causing unnecessary pressure on the tunnel structure or affecting the structural design, thereby improving the quality of the secondary lining concrete.

[0063] Moreover, the microwave flowmeter 10 is controllably connected to the concrete delivery pump. During the pouring process, the flow setting value can be dynamically adjusted according to the actual flow conditions and pouring speed of the concrete to ensure uniform pouring of the concrete. When the microwave flowmeter 10 detects that the flow rate deviates from the preset range, the corresponding control system can automatically adjust the speed of the concrete delivery pump to restore the correct flow rate, which can further improve the level of intelligence in the secondary lining construction process.

[0064] Therefore, by installing a sensor monitoring system on the secondary lining trolley 1, the pouring progress and pouring quality can be monitored in real time, and various problems in the secondary lining construction can be discovered in time and solved automatically or manually, which can effectively improve the void problem caused by the lack of monitoring in traditional pouring.

[0065] To this end, the sensor monitoring system in step S6 is also connected to the alarm control system. When the sensor monitoring system detects an abnormal item or a set item, the alarm control system controls the alarm to remind the construction personnel of the current construction progress and any abnormalities that have occurred, thereby ensuring that the secondary lining construction proceeds in an orderly and normal manner.

[0066] The implementation principle of the second lining intelligent construction method in the embodiment of the present application is as follows:

[0067] When the secondary lining trolley 1 is traveling, steerable wheels are used instead of traditional rail travel, which allows for more flexible position adjustment. The trolley can reach the designated position and maintain a well-centered position according to the instructions of the trolley positioning control program, without the need for manual adjustment. This can solve the problem of inflexible rail travel and inadequate steering during traditional secondary lining construction. Furthermore, through the setting of the trolley positioning control program, the secondary lining trolley 1 can be automated, and during travel, the travel trajectory and positioning of the secondary lining trolley 1 can be corrected in real time by simply aligning the center line of the secondary lining trolley 1 with the center line of the tunnel. This eliminates the need for expensive and high-maintenance satellite positioning systems for positioning. This makes it particularly suitable for construction environments with weak or no signal strength in closed tunnels, effectively controlling construction costs while ensuring construction quality.

[0068] Moreover, during the pouring and vibration process, a vibrating rod is installed on the vibrating robot arm 6 to replace manual vibration, which can avoid the dependence of manual vibration on the work experience, physical strength and effective operating space of the construction workers. The second lining intelligent construction method of the present application can get rid of the traditional operation method of exchanging labor for high-quality and high-efficiency construction to the greatest extent, which can not only reduce labor intensity, but also improve the construction efficiency and quality of the second lining.

[0069] The operation of the vibrating mechanical arm 6 and the vibrating rod installed thereon is controlled by the vibration control program, so that the vibrating mechanical arm 6 can be moved to the working window autonomously, and the vibrating rod can be controlled to work at the set vibration time and vibration frequency. Moreover, by moving the vibrating mechanical arm 6 and adjusting the inclination angle of the vibrating rod during the vibration process, effective and sufficient vibration can be achieved within the set vibration range, which can effectively solve the problems of missed vibration and small vibration range existing in traditional manual vibration, and can greatly improve the vibration quality in the secondary lining construction.

[0070] At the same time, by recording various vibration data through the vibration control program, feedback on the secondary lining pouring quality can be used to analyze the optimal vibration time and frequency, thereby further improving the vibration quality in the subsequent secondary lining construction. This can form a trend that the longer the construction section, the higher the pouring and vibration quality. The relevant data can also be used as a reference for vibration data in other construction projects, ensuring the construction quality of similar projects and helping to improve the dataization capabilities of secondary lining construction.

[0071] The automatic closing of windows by the window closing hydraulic device 7 on the secondary lining trolley 1 further reduces the work intensity of the construction workers, and thereby eliminates the need to set up a manual working platform on the secondary lining trolley 1. The structural setting of the secondary lining trolley 1 is further simplified, so that a larger vehicle passage can be reserved under the secondary lining trolley 1, creating space support for the simultaneous construction of multiple processes in the tunnel, and is more conducive to further improving the overall construction efficiency of the tunnel.

[0072] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0073] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A secondary lining intelligent construction method, characterized in that: The following steps are involved: S1. The trolley is moved, and the walking mechanism of the second lining trolley (1) is selected as the structure of the steering wheel, and the second lining trolley (1) is controlled to reach the pouring position along the parameter trajectory by itself; S2. After the trolley is positioned, the second lining trolley (1) reaches the designated position, the second lining trolley (1) is positioned according to the centerline of the tunnel; S3 trolley formwork, through the second lining trolley (1) on the hydraulic cylinder control template automatic formwork, in accordance with the top mold (2), side mold, end mold (5) in the order of automatic formwork; S4. Pouring and vibrating, aligning the concrete pump pipe with each window, and pouring concrete from bottom to top and on both sides simultaneously; while pouring, the vibrating arm (6) on the second lining trolley (1) controls the vibrating rod to perform synchronous vibration; the vibrating arm (6) and the vibrating rod installed thereon are controlled by a vibration control program, the vibration control program is pre-entered with vibration range, vibration time, and vibration frequency data, and the vibration control program controls the vibrating arm (6) and the vibrating rod to automatically work; the vibration control program is further configured to record each vibration data, the vibration data including at least vibration range, vibration time, and vibration frequency, and analyze the optimal vibration time and vibration frequency through feedback on the second lining pouring quality; the vibration data is also used as a reference for vibration data in other construction projects; S5. Automatically seal the windows. After the pouring and vibration of each window is completed, the windows are automatically closed by the hydraulic window closing device (7) on the second lining trolley (1); S6 pouring monitoring, a sensor monitoring system is installed on the second lining trolley (1), the pouring progress and pouring quality are monitored in real time, and feedback is given to the corresponding control system; S7. After the concrete pouring is completed, the trolley automatically retracts the end mold (5), top mold (2), and side mold templates through the secondary lining trolley (1); Wherein, in step S4, a row of slide rails is installed on the second lining trolley (1) at a position corresponding to each layer of windows, and the vibrating mechanical arm (6) is driven by a motor to slide and install on the slide rails. After the vibrating mechanical arm (6) controls the vibrating rod to vibrate a window, the vibrating mechanical arm (6) is driven by the motor to move to the next window on the slide rails and vibrate; during the vibration process, the vibrating mechanical arm (6) is moved and the inclination angle of the vibrating rod is adjusted to achieve effective and sufficient vibration within the set vibration range.

2. The secondary lining intelligent construction method according to claim 1 is characterized in that: In step S1 and step S2, the coordinates of the tunnel centerline are input into the trolley positioning control program, and the coordinates of the centerline of the secondary lining trolley (1) are positioned in real time. The travel route and direction of the secondary lining trolley (1) are controlled by the positioning control program so that the centerline of the secondary lining trolley (1) is kept coincident with the tunnel centerline during the travel process and after the secondary lining trolley (1) reaches the designated position.

3. The secondary lining intelligent construction method according to claim 1, characterized in that: In step S6, the sensor monitoring system includes a liquid level sensor (9) installed below each window of the second lining trolley (1), and the liquid level sensor (9) and the window closing hydraulic device (7) are connected to the window closing control program; The window closing control program is configured to control the corresponding window closing hydraulic device (7) to close the window corresponding to the liquid level sensor (9) when the liquid level sensor (9) detects the pouring of concrete.

4. The secondary lining intelligent construction method according to claim 1, characterized in that: In step S6, the second lining trolley (1) is positioned on a second lining plate, and the second lining trolley (1) is fixed at a joint with the second lining trolley (1) by using a soft overlap, and the sensor monitoring system includes a pressure sensor (8) embedded in the soft overlap, and the pressure sensor (8) and the jacking system of the second lining trolley (1) are connected to the jacking control program; The jacking control program is configured to control the jacking system of the secondary lining trolley (1) to stop jacking work when the pressure sensor (8) detects that the internal pressure value of the soft overlap exceeds a set pressure value.

5. The secondary lining intelligent construction method according to claim 1 is characterized in that: In step S6, the sensor monitoring system includes a microwave flowmeter (10) installed at the arch top position of the secondary lining trolley (1), and the microwave flowmeter (10) monitors the arch top concrete pouring flow in real time to control the arch top concrete pouring rate to prevent insufficient or excessive concrete pouring.

6. The secondary lining intelligent construction method according to claim 1 is characterized in that: The sensor monitoring system is also connected to an alarm control system. When the sensor monitoring system detects an abnormal item or a set item, the alarm control system controls the alarm to operate.

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