Tunnel through construction safety intelligent management and control platform

By designing an intelligent management and control platform for tunnel construction safety, the control system and exhaust components are used to realize real-time monitoring and attraction and discharge of harmful substances in the tunnel, the problem of harmful substances aggregation in tunnel construction is solved, and dynamic adaptation of intelligent exhaust and construction safety is achieved.

CN119878269AActive Publication Date: 2025-04-25GUANGXI TEACHERS EDUCATION UNIV
View PDF 3 Cites 0 Cited by

Patent Information

Application Number
CN202510068704.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-16
Publication Date
2025-04-25
Estimated Expiration
2045-01-16

AI Technical Summary

Technical Problem

During the tunnel opening construction, harmful substances such as dust, exhaust gas and cannon smoke gather in the opening, seriously affecting the health of the staff. The existing technology is difficult to adapt to the changes in the opening length of the tunnel and cannot intelligently exhaust air.

Method used

An intelligent management and control platform for tunnel construction safety is designed, including workbench, exhaust components and walking components. The walking table and fan are controlled through the control system, and combined with the suction duct and exhaust duct, real-time monitoring and suction discharge of dust, methane and carbon dioxide in the hole are achieved. The platform can automatically adjust the exhaust area according to the changes in the tunnel opening length to achieve intelligent exhaust.

Benefits of technology

Effectively remove harmful substances in the hole, improve the working environment of staff and ensure their physical health. At the same time, the platform can dynamically adapt to changes in tunnel opening length, realizing safe and intelligent control of tunnel opening construction.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119878269A_ABST
    Figure CN119878269A_ABST
Patent Text Reader

Abstract

The invention discloses a tunnel through construction safety intelligent management and control platform, and belongs to the technical field of tunnel construction. The device comprises a workbench; a control system is arranged on the workbench; the air exhaust assembly comprises an air suction pipeline, an air exhaust pipeline and a fan; the air suction end of the fan is connected with one end of the air suction pipeline, and the exhaust end of the fan is connected with one end of the exhaust pipeline; the air suction pipeline is a hose; the fan is in circuit connection with the control system; the walking assembly comprises a walking table and a monitoring unit; the monitoring unit is arranged on the walking platform; the walking platform and the monitoring unit are in circuit connection with the control system; the end, away from the fan, of the air suction pipeline is connected with the walking table. The method can adapt to increase of the tunnel opening length, intelligent air exhaust is achieved after the tunnel opening length is increased, and safety management and control of tunnel through construction are achieved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention belongs to the technical field of tunnel construction, and in particular relates to a tunnel penetration construction safety intelligent management and control platform. Background Art

[0002] Tunnels are important parts of subways, high-speed railways, highways, etc. Tunnel penetration requires adequate preparation to ensure the safety of the project. During the tunnel penetration construction process, the space at the entrance is limited and the air circulation is poor. During the construction, dust, engine exhaust, and even gun smoke will be generated when explosives are used for blasting. These substances that are harmful to the workers gather in the entrance of the tunnel, seriously affecting the health of the workers in the tunnel. Therefore, during the tunnel penetration construction process, it is necessary to discharge the dust, exhaust, and gun smoke in the entrance of the tunnel out of the tunnel, and at the same time transport the air outside the tunnel into the tunnel to ensure the safety of the workers during the tunnel penetration construction process.

[0003] In response to the above problems, the invention with patent publication number CN114995272A discloses a centralized control system and method for tunnel construction blasting exhaust, the system includes a monitoring unit and a first programmable logic controller, both of which are located on the operating equipment of the tunnel construction blasting; the monitoring unit is communicatively connected to the first programmable logic controller, the monitoring unit can collect environmental data of the tunnel construction blasting, and send it to the first programmable logic controller; the first programmable logic controller judges the environmental data based on a preset logical relationship; wherein, in response to the environmental data satisfying the preset logical relationship, the first programmable logic controller issues a control instruction; the second programmable logic controller is located at the entrance of the tunnel, and is communicatively connected to the first programmable logic controller, and controls the frequency conversion operation of the exhaust unit according to the received control instruction; the exhaust unit is installed in the tunnel, and is communicatively connected to the second programmable logic controller, thereby realizing high-precision unmanned control of the tunnel construction.

[0004] However, in the tunnel penetration project, the length of the opened tunnel is variable. As the project progresses, the length of the tunnel continues to grow. The exhaust unit mentioned above is installed in the tunnel, and the specific structure of the exhaust unit is not disclosed, nor is it disclosed how the exhaust unit should exhaust air as the length of the tunnel is opened. In view of this, it is necessary to design a tunnel penetration construction safety intelligent management and control platform that can intelligently exhaust air as the length of the tunnel is increased. Summary of the invention

[0005] The present invention provides a tunnel penetration construction safety intelligent management and control platform to solve the technical problems mentioned in the background technology.

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

[0007] A tunnel penetration construction safety intelligent management and control platform, comprising: a workbench; a control system is arranged on the workbench; an exhaust assembly, comprising a suction duct, an exhaust duct and a fan; the fan suction end is connected to one end of the suction duct, and the exhaust end is connected to one end of the exhaust duct; the suction duct is a hose; the fan is connected to the control system circuit; a walking assembly, comprising a walking platform and a monitoring unit; the monitoring unit is arranged on the walking platform; the walking platform and the monitoring unit are connected to the control system circuit; the end of the suction duct away from the fan is connected to the walking platform.

[0008] As a further improvement of the technical solution, the walking platform includes a walking member, a first plate, a first motor and a frame; both sides of the frame are connected to the walking member; the first motor is arranged on the frame, and its output end is connected to the walking member; the first plate is arranged on the top surface of the frame; the monitoring unit is arranged on the first plate; and the first motor is connected to the control system circuit.

[0009] As a further improvement of the technical solution, the walking member is a crawler walking structure.

[0010] As a further improvement of the technical solution, the walking platform also includes a second plate and a rod; one end of the second plate is vertically connected to the first plate, and the other end is connected to the rod; the rod is detachably connected to the suction duct.

[0011] As a further improvement of the technical solution, the walking platform also includes a rotating wheel and a second motor; the rotating wheel is rotatably arranged at one end of the second plate body away from the first plate body; the axial direction of the rotating wheel is horizontally distributed; the rod body is rotatably arranged on the second plate body through the rotating wheel; one end of the rod body is connected to the side of the rotating wheel; the second motor is arranged on the second plate body, and its output end is transmission-connected to the rotating machinery; the second motor is connected to the control system circuit.

[0012] As a further improvement of the technical solution, the walking platform also includes a ranging radar; the ranging radar is arranged at the front end of the frame, and its detection end is consistent with the traveling direction of the frame; the ranging radar is connected to the control system circuit.

[0013] As a further improvement of the technical solution, the monitoring unit includes a dust sensor and a harmful gas sensor.

[0014] As a further improvement of the technical solution, the exhaust assembly also includes a first box body; the first box body is filled with water; the end of the exhaust duct away from the fan extends into the first box body and is connected to the first box body; a first opening is opened on the top of the first box body.

[0015] As a further improvement of the technical solution, the exhaust assembly also includes a second box body and a connecting pipe; the second box body is filled with water; one end of the connecting pipe is connected to the first box body through the first opening, and the other end thereof extends into the top of the second box body and extends toward the bottom end of the second box body to contact the water in the second box body; a second opening is opened on the top of the second box body.

[0016] As a further improvement of the technical solution, the floating block is made of buoyancy material; the exhaust assembly also includes an activated carbon filter element; and the activated carbon filter element is arranged on the second opening.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present application can adapt to the increase in the length of tunnel opening, and the intelligent exhaust for the increase in the length of tunnel opening can realize the construction safety management and control of tunnel penetration; when in use, the walking platform, exhaust duct and workbench are placed outside the tunnel entrance, and the walking platform is controlled by the control system, and the walking platform moves toward the tunnel, and one end of the exhaust duct is driven by the walking platform and moves toward the tunnel together, and the monitoring unit is started, and the monitoring unit monitors the environment in the tunnel to monitor whether there is dust, methane, carbon dioxide, etc. After the concentration of dust, methane and carbon dioxide reaches the preset value, the control system controls the fan to start, and the fan connected to the suction end of the fan is turned on. The suction duct starts to suck air to absorb the dust, methane and carbon dioxide in the tunnel. The dust, methane and carbon dioxide are sucked into the suction duct, passed through the fan, and finally discharged from the exhaust duct to discharge the dust, methane and carbon dioxide in the tunnel entrance until the concentration of dust, methane and carbon dioxide in the tunnel is reduced to the preset value to ensure the air environment in the tunnel and protect the health of the workers. As the length of the tunnel increases, the control system controls the walking platform to move forward a certain distance into the tunnel to monitor the dust, methane and carbon dioxide in front and repeat the above operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The structure of the workbench and exhaust assembly provided by the present invention is schematically shown. Figure 1 ;

[0021] Figure 2 The structure of the workbench and exhaust assembly provided by the present invention is schematically shown. Figure 2 ;

[0022] Figure 3 The structure diagram of the walking assembly provided by the present invention is as follows Figure 1 ;

[0023] Figure 4 The structure diagram of the walking assembly provided by the present invention is as follows Figure 2 ;

[0024] Figure 5 The structure diagram of the walking assembly provided by the present invention is as follows Figure 3 ;

[0025] Figure numerals: 1-workbench, 2-exhaust assembly, 21-suction duct, 22-exhaust duct, 23-fan, 24-first box body, 25-second box body, 26-connecting pipe, 27-activated carbon filter element, 3-walking assembly, 31-walking platform, 311-walking part, 312-first plate body, 313-first motor, 314-frame, 315-second plate body, 316-rod body, 317-rotating wheel, 318-second motor, 319-ranging radar. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.

[0027] The words "first", "second" and similar words used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form of "a", "an" or "the" and similar words do not indicate a quantitative limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "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.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Embodiment 1:

[0030] like Figures 1 to 3 As shown, a tunnel penetration construction safety intelligent management and control platform includes: a workbench 1, an exhaust assembly 2 and a walking assembly 3; a control system is arranged on the workbench 1; the workbench 1 is located outside the tunnel entrance; the exhaust assembly 2 includes an air suction duct 21, an exhaust duct 22 and a fan 23; once the air suction end of the fan 23 is connected to the air suction duct 21, its exhaust end is connected to one end of the exhaust duct 22, and the air suction duct 21 is a hose; the fan 23 is connected to the control system circuit; the walking assembly 3 includes a walking platform 31 and a monitoring unit 32; the monitoring unit 32 is arranged on the walking platform 31 and moves with the walking platform 31; the monitoring unit 32 includes a dust sensor and a harmful gas sensor, wherein the harmful gas sensor includes a methane transmitter and a carbon dioxide transmitter to monitor the dust, methane and carbon dioxide in the tunnel in real time; the walking platform 31 and the monitoring unit 32 are connected to the control system circuit; the end of the air suction duct 21 away from the fan 23 is connected to the walking platform 31, and the end moves together with the walking platform 31. In addition, it should be noted that the connection method between the control system and the fan, walking platform, and monitoring unit is a conventional connection. The specific models of the control system, fan, and monitoring unit are not the improvement points of this application and will not be elaborated here.

[0031] Working method:

[0032] When in use, the walking platform 31, the exhaust duct 22 and the workbench 1 are placed outside the cave entrance, and the walking platform 31 is controlled by the control system. The walking platform 31 moves toward the cave, and one end of the exhaust duct 22 is driven by the walking platform 31 and moves toward the cave together. The monitoring unit 32 is started, and the monitoring unit 32 monitors the environment in the cave to monitor whether there is dust, methane, carbon dioxide, etc. After the concentration of dust, methane and carbon dioxide reaches a preset value, the control system controls the fan 23 to start, and the suction duct 21 connected to the suction end of the fan 23 starts to inhale air, so as to inhale the dust, methane and carbon dioxide in the cave. Dust, methane and carbon dioxide are sucked into the suction duct 21, passed through the fan 23, and finally discharged from the exhaust duct 22, so as to discharge the dust, methane and carbon dioxide in the tunnel entrance until the concentration of dust, methane and carbon dioxide in the tunnel is reduced to the preset value, so as to ensure the air environment in the tunnel and protect the health of the workers. As the length of the tunnel increases, the control system controls the walking platform 31 to move forward a certain distance into the tunnel, and monitors the dust, methane and carbon dioxide in front. The above operation is repeated to adapt to the increase in the length of the tunnel opening and realize the construction safety management and control of the tunnel penetration.

[0033] Embodiment 2:

[0034] like Figures 3 to 5 As shown, compared with the first embodiment, the difference is that a structural form of a walking platform 31 is given, and the walking platform 31 includes a walking member 311, a first plate body 312, a first motor 313 and a frame 314; both sides of the frame 314 are connected to the walking member 311, preferably, the walking member 311 is a crawler structure to adapt to the on-site construction environment, the crawler structure includes a walking wheel and a crawler, the walking wheel is rotatably connected to the frame 314, and the crawler wraps the walking wheel; the first motor 313 is arranged on the frame 314, and its output end is connected to the walking member 311, that is, the first motor 313 is connected to the walking wheel to drive the walking wheel to rotate, preferably, the number of the first motors 313 is 2, respectively located at the diagonal positions of the frame 314, so as to facilitate the steering of the frame 314; the first plate body 312 is arranged on the top surface of the frame 314; the monitoring unit is arranged on the first plate body 312; the first motor 313 is connected to the control system circuit, and the control system controls the first motor 313. In addition, it should be noted that the connection method between the first motor and the control system is a conventional connection, and the specific model of the first motor is not an improvement point of this application, so it will not be elaborated here.

[0035] like Figures 3 to 5 As shown, preferably, the walking platform 31 also includes a second plate body 315 and a rod body 316; one end of the second plate body 315 is vertically connected to the first plate body 312, and the other end thereof is connected to the rod body 316; the rod body 316 is detachably connected to the suction duct 21, and the end of the rod body 316 and the suction duct 21 can be tied by ropes or the like to achieve a detachable connection, and the overall structure is simple.

[0036] like Figures 3 to 5 As shown, preferably, the walking platform 31 also includes a rotating wheel 317 and a second motor 318; the rotating wheel 317 is rotatably arranged at one end of the second plate 315 away from the first plate 312; the axis direction of the rotating wheel 317 is horizontally distributed; the rod 316 is rotatably arranged on the second plate 315 through the rotating wheel 317; one end of the rod 316 is connected to the side of the rotating wheel 317, and when the rotating wheel 317 rotates, the rod 316 rotates accordingly; the second motor 318 is arranged on the second plate 315, and its output end is connected to the rotating mechanical transmission; The second motor 318 is connected to the control system circuit. Optionally, the second motor 318 is connected to the rotating wheel 317 through a belt drive. When the angle of the air suction duct 21 needs to be changed, the second motor 318 is started by the control system, and the second motor 318 rotates and drives the rotating wheel 317 to rotate a certain angle. The rod body 316 rotates a certain angle with the rotating wheel 317, changing the original inclination angle, which can be tilted upward, tilted downward, or distributed horizontally. The air suction duct 21 rotates with the rod body 316, thereby achieving multi-angle air suction. In addition, it should be noted that the connection method between the second motor and the control system is a conventional connection. The specific model of the second motor is not an improvement point of this application, and will not be repeated here.

[0037] like Figures 3 to 5 As shown, preferably, the present application also includes a ranging radar 319; the ranging radar 319 is arranged at the front end of the frame 314, and its detection end is consistent with the direction of travel of the frame 314; the ranging radar 319 is connected to the control system circuit; the ranging radar 319 can be a laser ranging radar, an ultrasonic ranging radar or a millimeter wave radar, etc. The ranging radar 319 faces the side of the tunnel to be opened, and detects the distance between the frame 314 and the tunnel to be opened. When the distance between the ranging radar 319 and the tunnel to be opened increases, the control system controls the first motor 313 to start, so that the frame 314 and the end of the suction duct 21 move forward, and automatically shorten the distance between the frame 314 and the tunnel to be opened, so as to maintain the distance between the suction duct 21 and the tunnel to be opened, and realize intelligent control. In addition, it should be noted that the connection method between the ranging radar and the control system is a conventional connection, and the specific model of the ranging radar is not an improvement point of the present application, so it will not be repeated here.

[0038] Embodiment three:

[0039] like Figure 1 and Figure 2As shown, compared with the first embodiment, the difference is that the exhaust assembly 2 also includes a first box body 24; the first box body 24 is filled with water; the end of the exhaust duct 22 away from the fan 23 extends into the first box body 24 and is connected to the first box body 24; a first opening is opened on the top of the first box body 24 to discharge the wind in the first box body 24; dust, methane, carbon dioxide, etc. are discharged from the exhaust duct 22 into the first box body 24, and come into contact with the water in the first box body 24, so that the dust is gathered in the first box body 24, avoiding a large amount of dust from being discharged into the atmosphere and causing environmental pollution.

[0040] like Figure 1 and Figure 2 As shown, preferably, one end of the exhaust duct 22 extends into the first box body 24 and does not contact the water in the first box body 24. The exhaust assembly 2 also includes a second box body 25 and a connecting duct 26; the second box body 25 is filled with water; one end of the connecting duct 26 is connected to the first box body 24 through the first opening (the end does not contact the water in the first box body 24), and the other end extends into the top of the second box body 25 and extends toward the bottom of the second box body 25, contacting the water in the second box body 25 (that is, the end port is submerged in water); the top of the second box body 25 is provided with a second opening, and the second opening The outlet discharges the wind in the second box 25; the dust, methane and carbon dioxide in the exhaust pipe 22 first enter the first box 24, part of the dust contacts the water in the first box 24 and accumulates in the first box 24, and the other part of the dust enters the second box 25 through the connecting pipe 26. Because one end of the connecting pipe 26 and the second box 25 is submerged in water, after the dust is discharged from the connecting pipe 26, it directly contacts the water in the second box 25 and cannot float away. It gathers in the second box 25, enhancing the purification of the dust. At the same time, the first box 24 plays a buffering role.

[0041] like Figure 1 and Figure 2 As shown, preferably, the exhaust assembly 2 also includes an activated carbon filter 27; the activated carbon filter 27 is arranged on the second opening. Since methane is insoluble in water, methane passes through the first box body 24 and the second box body 25 and is discharged from the second opening. The activated carbon filter 27 absorbs methane to prevent methane from being discharged into the atmosphere and polluting the environment.

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

Claims

1. A tunnel construction safety intelligent management and control platform, characterized in that: include: A workbench (1); a control system is provided on the workbench (1); An exhaust assembly (2) comprises an air suction duct (21), an exhaust duct (22) and a fan (23); the air suction end of the fan (23) is connected to one end of the air suction duct (21), and the air exhaust end of the fan (23) is connected to one end of the exhaust duct (22); the air suction duct (21) is a hose; the fan (23) is connected to the control system circuit; The walking assembly (3) comprises a walking platform (31) and a monitoring unit (32); the monitoring unit (32) is arranged on the walking platform (31); the walking platform (31) and the monitoring unit (32) are connected to the control system circuit; and one end of the suction duct (21) away from the fan (23) is connected to the walking platform (31).

2. The intelligent management and control platform for tunnel construction safety according to claim 1 is characterized in that: The walking platform (31) comprises a walking member (311), a first plate (312), a first motor (313) and a frame (314); both sides of the frame (314) are connected to the walking member (311); the first motor (313) is arranged on the frame (314), and an output end thereof is connected to the walking member (311); the first plate (312) is arranged on the top surface of the frame (314); the monitoring unit is arranged on the first plate (312); and the first motor (313) is connected to the control system circuit.

3. The intelligent management and control platform for tunnel construction safety according to claim 2 is characterized in that: The walking member (311) is a crawler walking structure.

4. The intelligent management and control platform for tunnel construction safety according to claim 2 is characterized in that: The walking platform (31) further comprises a second plate body (315) and a rod body (316); one end of the second plate body (315) is vertically connected to the first plate body (312), and the other end thereof is connected to the rod body (316); the rod body (316) is detachably connected to the air suction duct (21).

5. The intelligent management and control platform for tunnel construction safety according to claim 4 is characterized in that: The walking platform (31) further comprises a rotating wheel (317) and a second motor (318); the rotating wheel (317) is rotatably arranged on one end of the second plate (315) away from the first plate (312); the axis direction of the rotating wheel (317) is horizontally distributed; the rod (316) is rotatably arranged on the second plate (315) through the rotating wheel (317); one end of the rod (316) is connected to the side of the rotating wheel (317); the second motor (318) is arranged on the second plate (315), and the output end thereof is transmission-connected to the rotating machinery; the second motor (318) is connected to the control system circuit.

6. The intelligent management and control platform for tunnel penetration construction safety according to claim 2 is characterized in that: The walking platform (31) further comprises a distance measuring radar (319); the distance measuring radar (319) is arranged at the front end of the vehicle frame (314), and its detection end is consistent with the traveling direction of the vehicle frame (314); the distance measuring radar (319) is connected to the control system circuit.

7. The intelligent management and control platform for tunnel construction safety according to claim 1 is characterized in that: The monitoring unit (32) comprises a dust sensor and a harmful gas sensor.

8. The intelligent management and control platform for tunnel construction safety according to any one of claims 1 to 7, characterized in that: The exhaust assembly (2) further comprises a first box (24); the first box (24) is filled with water; one end of the exhaust duct (22) away from the fan (23) extends into the first box (24) and is in communication with the first box (24); and a first opening is provided at the top of the first box (24).

9. The intelligent management and control platform for tunnel construction safety according to claim 8 is characterized in that: The exhaust assembly (2) further comprises a second box (25) and a connecting pipe (26); the second box (25) is filled with water; one end of the connecting pipe (26) is connected to the first box (24) through the first opening, and the other end thereof extends into the top of the second box (25) and extends toward the bottom of the second box (25) to contact the water in the second box (25); a second opening is provided at the top of the second box (25).

10. The intelligent management and control platform for tunnel construction safety according to claim 9, characterized in that: The exhaust assembly (2) further comprises an activated carbon filter element (27); the activated carbon filter element (27) is arranged on the second opening.

Citation Information

Patent Citations

  • Intelligent centralized control system and method for blasting exhaust in tunnel construction

    CN114995272A

  • Comprehensive tunnel detection vehicle driven by pure storage battery

    CN219029404U

  • Automatic tunnel monitoring and measuring device and method based on fixed-point itinerant measurement

    WO2023178837A1