Underwater concrete elevation real-time monitoring device for underground diaphragm wall

Abstract

An underwater concrete elevation real-time monitoring device for an underground diaphragm wall comprises a base rod and a pulley block, an equipment frame is vertically and fixedly installed in the middle of the base rod, a pull rope displacement sensor and a guide pulley are installed at the upper end of the equipment frame, and the pulley block comprises a multi-groove movable pulley and a multi-groove fixed pulley. A mounting frame of the multi-groove fixed pulley is fixedly mounted at the lower end of the equipment frame, the multi-groove movable pulley is located over the multi-groove fixed pulley, a sensor pull rope of the pull rope displacement sensor is connected with the mounting frame of the multi-groove movable pulley, the mounting frame of the multi-groove movable pulley is further connected with a balance weight lifting rope, one end of the balance weight lifting rope is connected with the mounting frame of the multi-groove movable pulley, and the other end of the balance weight lifting rope is connected with the equipment frame. A buoy lifting rope is wound on the multi-groove movable pulley and the multi-groove fixed pulley in a multi-return-stroke mode, the upper end of the buoy lifting rope is fixedly connected with the multi-groove movable pulley, and the lower end of the buoy lifting rope is vertically connected with a buoy. The device can monitor the underwater concrete elevation of the underground diaphragm wall in real time.

Description

Technical Field

[0001] This utility model relates to the technical field of underwater concrete construction monitoring, specifically to a device for real-time monitoring of underwater concrete elevation in diaphragm walls and its usage method. Background Technology

[0002] With the rapid development of infrastructure construction in my country, the construction of high-rise buildings, large bridges, and highways is increasing. In these projects, the application of structures such as pile foundations and diaphragm walls is indispensable. Especially in subway construction, diaphragm walls, as a crucial retaining structure, directly affect the safety and stability of the subway project. With the rapid development of subway construction, the construction requirements for diaphragm walls are also becoming increasingly stringent. Accurately controlling the pouring elevation is crucial during the pouring process of diaphragm walls. Insufficient concrete pouring height will affect the quality of the diaphragm wall, while excessive pouring height will waste materials and increase construction costs.

[0003] Traditional methods for monitoring the elevation of diaphragm wall pouring mainly rely on manual measurement, which has many drawbacks. Firstly, manual measurement has limited accuracy and is easily affected by human factors, such as the surveyor's experience and skill level, leading to inaccurate results. Furthermore, in complex construction site environments, the safety of surveyors is difficult to guarantee. Secondly, manual measurement is inefficient, unable to achieve real-time monitoring, and makes it difficult to promptly identify and adjust problems during the pouring process. Therefore, some organizations have developed and applied underwater concrete elevation measurement technology. For example, Chinese Patent: A Device and Method for Measuring Underwater Concrete Elevation, Application No.: 202110585905.X, Application Date: 2021.05.27, Abstract: This invention discloses a device and method for measuring underwater concrete elevation, including a first hollow steel pipe. The bottom outer wall of the first hollow steel pipe is tapered. The top outer wall of the first hollow steel pipe is threaded with a connecting ring. The inner wall of the connecting ring is threaded with an extension hollow steel pipe. The outer walls of the extension hollow steel pipe and the first hollow steel pipe are respectively provided with a first monitoring airbag and a second monitoring airbag. A blind tube is provided between the first monitoring airbag and the second monitoring airbag. The inner wall of the connecting ring is provided with a connecting mechanism. When determining the elevation of underwater concrete, the present invention first places the entire device at the bottom of the hole using a stabilizing mechanism, measures the height from the bottom of the hole to the water surface and records it as H, and then lets it stand for a period of time. After the pressure in the first monitoring airbag and the second monitoring airbag stabilizes, the pressure inside the first monitoring airbag is detected by a pressure detection mechanism.

[0004] Application research has revealed that the aforementioned technologies for underwater concrete elevation measurement require the deployment of multiple sensors to accurately calculate concrete elevation, significantly increasing construction costs and making installation and commissioning extremely complex and cumbersome. Furthermore, when the diaphragm wall is deep, the device becomes difficult to extract from the concrete, increasing construction risks and costs. The devices also cannot provide real-time continuous monitoring of underwater concrete elevation, simultaneously display the elevation of multiple measuring points, offer intelligent alerts, or determine if there are significant differences in elevation between multiple underwater concrete pouring points, thus failing to ensure uniform underwater concrete pouring. Therefore, a real-time elevation monitoring technology for underwater diaphragm walls needs to be developed. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the prior art by providing a device for real-time monitoring of underwater concrete elevation in diaphragm walls. This device can monitor the underwater concrete elevation of diaphragm walls in real time, and by setting up multiple individual devices, it can simultaneously display the underwater concrete elevation of multiple measuring points in real time.

[0006] This utility model is achieved using the following technical solution:

[0007] A device for real-time monitoring of underwater concrete elevation in diaphragm walls includes a base rod and a pulley system for being held in place on the concrete of guide walls on both sides. An equipment frame is vertically fixed at the middle of the base rod. A rope displacement sensor and a guide pulley are installed at the upper end of the equipment frame. The pulley system includes a multi-groove movable pulley and a multi-groove fixed pulley. The mounting bracket of the multi-groove fixed pulley is fixedly installed at the lower end of the equipment frame. The multi-groove movable pulley is located directly above the multi-groove fixed pulley. The pull rope of the rope displacement sensor is connected to the mounting bracket of the multi-groove movable pulley. The mounting bracket of the multi-groove movable pulley is also connected to a counterweight rope. One end of the counterweight rope is connected to the mounting bracket of the multi-groove movable pulley, and the other end of the counterweight rope passes around the guide pulley and is connected to a counterweight block. A float rope is wound around the multi-groove movable pulley and the multi-groove fixed pulley in multiple passes. The upper end of the float rope is fixedly connected to the multi-groove movable pulley, and the lower end of the float rope is hung down and connected to a float.

[0008] A further preferred embodiment: The base rod includes two parallel horizontal bars. The bottom of the base rod is connected to a support rod for limiting and supporting the vertical concrete surface of the guide wall via a connecting rod. Both ends of the support rod are threaded with screws. By rotating the screws to adjust the extension length, the equipment frame can be stably supported on the concrete guide wall. The equipment frame includes four vertical poles. Two vertical poles are fixedly installed on each horizontal bar of the base rod. The four vertical poles are connected into a whole by a fixing rod. A canopy is installed on the top of the four vertical poles. A load-bearing plate is fixedly connected to the upper end between the four vertical poles. The pull rope displacement sensor and the guide pulley are fixed to the load-bearing plate with bolts.

[0009] A further preferred embodiment is that the bottom of the support rod is equipped with wheels, allowing the equipment frame to be pushed around when not in use.

[0010] A further preferred embodiment includes an industrial control computer mounted on the equipment rack. This computer has a speaker that can broadcast intelligent early warning information. The industrial control computer is connected to the pull rope displacement sensor signal and is equipped with a wireless transmission module that transmits the real-time data measured by the pull rope displacement sensor to the cloud. After construction is completed, the counterweight, float, pulley block, pulley displacement sensor, guide pulley, industrial control computer, and equipment rack are removed sequentially. The removed components are then transported to the next construction site for use or returned to the material storage warehouse for maintenance.

[0011] This device for real-time monitoring of underwater concrete elevation in diaphragm walls utilizes a buoy that rises continuously with the underwater concrete surface, detecting the elevation of the diaphragm wall during pouring in real time. By setting up multiple individual devices, it can simultaneously display the underwater concrete elevation at multiple measuring points in real time. Compared to traditional manual measurement of underwater concrete elevation, it reduces labor costs, saves time and effort, and is safer. It can monitor elevation changes throughout the entire construction process of diaphragm walls for subway station retaining structures and transmit the collected data to the monitoring system for automatic analysis and graph generation. The device provides more accurate and less error-prone construction safety measurement data, enabling standardization. It is also easy to reuse, reduces construction costs, and is pollution-free. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a device for real-time monitoring of underwater concrete elevation in diaphragm walls.

[0013] Figure 2 for Figure 1 A left-view diagram;

[0014] Figure 3 A three-dimensional structural diagram of a device for real-time monitoring of underwater concrete elevation in diaphragm walls.

[0015] The names corresponding to the serial numbers in the figure are:

[0016] 1. Base rod, 2. Connecting rod, 3. Support rod, 4. Pulley block, 5. Guide wall concrete, 6. Sensor pull rope, 7. Counterweight suspension rope, 8. Industrial control all-in-one computer, 9. Pull rope displacement sensor, 10. Canopy, 11. Upright pole, 12. Guide pulley, 13. Counterweight block, 14. Fixed rod, 15. Multi-groove movable pulley, 16. Multi-groove fixed pulley, 17. Float suspension rope, 18. Float, 19. Traveling wheel. Detailed Implementation

[0017] The technical solutions of the invention will be clearly and completely described below with reference to the embodiments. The described embodiments are only a part of the present utility model, and not all of the embodiments. Example 1

[0018] A device for real-time monitoring of underwater concrete elevation in diaphragm walls includes a base rod 1 and a pulley assembly 4 for engaging guide wall concrete 5 on both sides. An equipment frame is vertically fixed at the middle of the base rod 1. A rope displacement sensor 9 and a guide pulley 12 are installed at the upper end of the equipment frame. The pulley assembly 4 includes a multi-groove movable pulley 15 and a multi-groove fixed pulley 16. The mounting bracket for the multi-groove fixed pulley 16 is fixedly installed at the lower end of the equipment frame. The multi-groove movable pulley 15 is located directly above the multi-groove fixed pulley 16. The rope displacement sensor... The sensor cable 6 of sensor 9 is connected to the mounting bracket of multi-groove movable pulley 15. The mounting bracket of multi-groove movable pulley 15 is also connected to a counterweight cable 7. One end of the counterweight cable 7 is connected to the mounting bracket of multi-groove movable pulley 15, and the other end of the counterweight cable 7 passes around the guide pulley 12 and is connected to a counterweight block 13. A float cable 17 is wound around multi-groove movable pulley 15 and multi-groove fixed pulley 16. The upper end of the float cable 17 is fixedly connected to multi-groove movable pulley 15, and the lower end of the float cable 17 is hung down and connected to a float 18.

[0019] The base rod 1 includes two parallel horizontal bars. The bottom of the base rod 1 is connected to a support rod 3 for limiting and supporting the vertical surface of the guide wall concrete 5 via a connecting rod 2. Both ends of the support rod 3 are threaded with screws. By rotating the screws to adjust the extension length, the equipment frame can be stably supported on the guide wall concrete 1. The equipment frame includes four uprights 11. Two uprights 11 are fixedly installed on each horizontal bar of the base rod 1. The four uprights 11 are connected into a whole by a fixing rod 14. A canopy 10 is installed on the top of the four uprights 11. A load-bearing plate is fixedly connected to the upper end between the four uprights 11. The pull rope displacement sensor 9 and the guide pulley 12 are fixed to the load-bearing plate by bolts.

[0020] The bottom of the support rod 3 is equipped with a walking wheel 19, which can be pushed along the equipment frame when not in use.

[0021] An industrial control all-in-one computer 8 is installed on the equipment rack. The all-in-one computer 8 has a speaker that can broadcast intelligent early warning information. The all-in-one computer 8 is signal-matched and connected to the rope displacement sensor 9. The all-in-one computer 8 is equipped with a wireless transmission module that transmits the real-time data measured by the rope displacement sensor 9 to the cloud. The monitoring device can be equipped with a data analysis module and a data monitoring and early warning module. The data analysis module includes an elevation calculation formula: H... n =H0-kx n Depth calculation formula: h n =kx nElevation difference calculation formula: ΔH = H max -H min The elevation calculation formula H n =H0-kx n In this diagram, n represents the monitoring point number, and the real-time underwater concrete elevation of the monitoring point is denoted as H. n H0 represents the guide wall elevation; k represents the magnification factor of the mixed-reel rope length; x represents the real-time reading of the rope displacement sensor; the depth calculation formula h n =kx n In this diagram, n represents the monitoring point number, and h is the depth from the underwater concrete surface at the monitoring point to the guide wall elevation. n k represents the magnification factor of the rope length of the mixed-reel group; x represents the real-time reading of the rope displacement sensor; the elevation difference calculation formula ΔH=H max -H min In the middle, H max H represents the maximum real-time elevation among multiple monitoring points; min ΔH represents the minimum real-time elevation among multiple monitoring points, and ΔH represents the difference between the maximum and minimum real-time elevations among multiple monitoring points. The data monitoring and early warning module includes real-time monitoring of underwater concrete elevation, early warning for exceeding the maximum elevation difference of underwater concrete surface, early warning for exceeding the time limit of underwater concrete pouring interval, early warning for exceeding the elevation difference between the real-time monitored elevation and the back-calculated elevation of the poured underwater concrete, early warning for exceeding the limit of the tremie pipe burial depth, and intelligent graded early warning for underwater concrete surface elevation before reaching the target elevation. The data measured by the device system is analyzed for data monitoring and early warning. The monitoring device system can download data from the cloud and automatically analyze the data to generate corresponding curves.

[0022] The warning message indicating that the maximum difference in elevation between underwater concrete surfaces at multiple measuring points exceeds the specified threshold of 50cm will trigger an intelligent alert indicating that the relative height of the current concrete pouring is uneven.

[0023] The underwater concrete pouring interval timeout warning indicates that when the underwater concrete pouring interval exceeds the specified threshold of 30 minutes, an intelligent warning will be issued indicating that the underwater concrete pouring interval is too long.

[0024] The warning system for exceeding the limit of the difference between the real-time monitoring elevation of underwater concrete and the back-calculated elevation of the poured underwater concrete indicates that when the difference between the real-time monitoring elevation of underwater concrete and the back-calculated elevation of the poured underwater concrete exceeds the set value of 0.5m, the system will intelligently prompt that there may be a collapse of the underground continuous wall.

[0025] The warning message indicating excessive burial depth of the conduit indicates that when the burial depth of the conduit during concrete pouring exceeds the standard threshold of 2.5m, an intelligent prompt will be made to remove one section of the conduit.

[0026] The system provides intelligent graded warnings and alerts from multiple measuring points before the underwater concrete surface reaches the target elevation. It sets multiple target differences. When the underwater concrete surface elevation is less than the target elevation, it intelligently indicates the difference between the current underwater concrete surface elevation and the target elevation. When the difference is 0, it intelligently indicates that the underwater concrete pouring is complete.

[0027] The steps for using the real-time monitoring device for underwater concrete elevation of diaphragm walls are as follows:

[0028] Step 1: Monitoring Device Adjustment: Initially, purchase rope displacement sensors; based on the depth of the diaphragm wall, mud density, underwater concrete density, and other working conditions, adjust the buoy density, counterweight weight, number of pulley groups, etc. When adjusting the buoy density, the following conditions must be met: G 浮漂实际 -F 配重等效 =ρ 浮漂等效 ×V 浮漂 The conditions must be met to ensure that the float rises with the underwater concrete level; when adjusting the weight of the counterweight, the following conditions must be met: 配重 -G 滑轮 -f 滑轮阻力 =F 配重等效 The condition of ×K, where G 浮漂实际 F is the actual weight of the float. 配重等效 ρ is the equivalent pulling force exerted on the float by the counterweight after being multiplied by the pulley system. 浮漂等效 For the float to be affected by F 配重等效 The equivalent density after action, V 浮漂 G is the volume of the float. 配重 For the weight of the counterweight, G 滑轮 For the weight of the multi-groove movable pulley, f 滑轮阻力 The frictional resistance of the pulley system is K, which is the magnification factor of the rope length in the pulley system, and ρ is the frictional resistance of the pulley system. 浮漂等效 According to ρ 泥浆 <ρ 浮漂 <ρ 砼 Based on the working conditions of the density of underwater concrete and mud on site, V was determined. 浮漂 According to the displacement method, G can be obtained. 浮漂实际 The result is obtained by measuring with a force gauge, therefore it can be calculated according to the formula G. 浮漂实际 -F 配重等效 =ρ 浮漂等效 ×V 浮漂 F is derived 配重等效 G 滑轮 f 滑轮阻力 F was calculated using a force gauge. 配重等效 According to formula G 浮漂实际 -F 配重等效 =ρ 浮漂等效 ×V 浮漂Therefore, K is the magnification factor of the pulley system rope length, and thus, according to formula G... 配重 -G 滑轮 -f 滑轮阻力 =F 配重等效 ×K yields G 配重 To ensure the float remains taut during ascent, the number of pulley groups should be adjusted based on the maximum travel of the rope displacement sensor within the monitoring device and the trenching depth of the diaphragm wall. z1 represents the trenching depth of the diaphragm wall, and z2 represents the maximum travel of the rope displacement sensor within the monitoring device. Therefore, the number of pulley groups z must be greater than z1 / z2.

[0029] Step 2, Monitoring Device Deployment: After the device is assembled, move it precisely to the target location of the diaphragm wall. The deployment principle is to avoid concrete pouring points and areas with dense reinforcement in empty spaces, and to place one or more individual devices at even intervals to ensure that the float can be successfully lowered to the bottom of the underground diaphragm wall. The tension and displacement sensors of multiple individual devices are integrated into the industrial control computer through connecting cables, and the underwater concrete liquid level elevation of multiple measuring points is monitored in real time on the industrial control computer.

[0030] Step 3: Parameter Setting and Data Initialization: After the float is aligned with the top elevation of the guide wall, perform parameter setting and data initialization; the parameters to be set include the diaphragm wall number and the diaphragm wall depth; the data to be initialized includes the guide wall elevation H0 and the pulley rope length magnification factor k.

[0031] Step 4: Implement real-time monitoring application: After the diaphragm wall is formed and before underwater concrete pouring, a float is first lowered to the bottom of the diaphragm wall trench. Then, multiple underwater concrete pouring points are poured simultaneously. Since the float density is greater than the mud density but less than the concrete density, the float of the monitoring device will remain on the underwater concrete surface and rise with the rise of the underwater concrete surface. The displacement data of the float is amplified by the pulley system and transmitted to the rope displacement sensor. The rope displacement sensor uploads the measured data to the monitoring system. After data analysis, the underwater concrete elevation is monitored in real time.

[0032] Step 5: Balance control during pouring: When the maximum difference in elevation between the underwater concrete liquid level at multiple measuring points exceeds the specified threshold, adjust the pouring speed at different underwater concrete pouring points to ensure balanced concrete pouring; during the underwater concrete pouring process, back-calculate the elevation based on the amount of underwater concrete poured and compare it with the elevation monitored in real time. If the difference is too large, it is judged as hole collapse.

[0033] Step Six: Intelligent Early Warning: When the maximum difference in elevation between multiple measuring points of the underwater concrete surface exceeds the specified threshold, the system will intelligently indicate that the relative height of the current concrete pouring is uneven; when the interval between underwater concrete pouring exceeds the specified threshold, the system will intelligently indicate that the interval between underwater concrete pouring is too long; when the difference between the real-time monitoring elevation of the underwater concrete and the back-calculated elevation of the poured underwater concrete exceeds the set value, the system will intelligently indicate that there is a collapse phenomenon in the diaphragm wall; when the burial depth of the concrete pouring guide pipe exceeds the specified threshold, the system will intelligently indicate that a section of the guide pipe should be removed; the system will provide intelligent graded warnings for multiple measuring points before the underwater concrete surface elevation reaches the target elevation, with multiple target differences set in advance. When the difference between the underwater concrete surface elevation and the target elevation is less than the set difference, the system will intelligently indicate the difference between the current underwater concrete surface elevation and the target elevation. When the difference is 0, the system will intelligently indicate that the underwater concrete pouring is complete.

[0034] Step 7: When the real-time elevation of the underwater concrete at multiple measuring points has exceeded the target elevation, complete the real-time monitoring of the underwater concrete pouring of the diaphragm wall.

[0035] Implementation Case:

[0036] A certain diaphragm wall is 6m long, 0.8m wide, with a top elevation of 71.95m, a bottom elevation of 54.88m, a depth of 17.07m, a guide wall elevation of 74m, and a trench depth of 19.12m. The operating steps for the real-time monitoring device for underwater concrete elevation of the diaphragm wall are as follows:

[0037] (1) Monitoring device allocation: Purchase a rope displacement sensor with a stroke of 2m and a return rope tension of 4N; based on the working conditions of a certain underground continuous wall with a depth of 17.07m, a mud density of 1.1g / cm³, and an underwater concrete density of 2.2g / cm³, adjust the density of the buoy, the weight of the counterweight, the number of pulley groups, etc.; when adjusting the density of the buoy, it is proposed to adjust the density of the buoy to 1.5g / cm³, purchase a cylindrical buoy with a diameter of 8cm and a height of 9cm, and a buoy volume of 452cm³. 3 Therefore, the float weight is 0.68kg, which meets the G requirement. 浮漂实际 -F 配重等效 =ρ 浮漂等效 ×V 浮漂 The conditions are met to ensure that the float rises with the underwater concrete level; when adjusting the weight of the counterweight, the counterweight is set to 3kg, which meets the requirements of G. 配重 -G 滑轮 -f 滑轮阻力 =F 配重等效 The condition of ×K, where G 浮漂实际 F is the actual weight of the float. 配重等效 ρ is the equivalent pulling force exerted on the float by the counterweight after being multiplied by the pulley system. 浮漂等效For the float to be affected by F 配重等效 The equivalent density after action, V 浮漂 G is the volume of the float. 配重 For the weight of the counterweight, G 滑轮 For the weight of the multi-groove movable pulley, f 滑轮阻力 The frictional resistance of the pulley system is K, which is the magnification factor of the rope length in the pulley system, and ρ is the frictional resistance of the pulley system. 浮漂等效 According to ρ 泥浆 <ρ 浮漂 <ρ 砼 Based on the working conditions of the density of underwater concrete and mud on site, V was determined. 浮漂 According to the displacement method, G can be obtained. 浮漂实际 The result is obtained by measuring with a force gauge, therefore it can be calculated according to the formula G. 浮漂实际 -F 配重等效 =ρ 浮漂等效 ×V 浮漂 F is derived 配重等效 G 滑轮 f 滑轮阻力 F was calculated using a force gauge. 配重等效 According to formula G 浮漂实际 -F 配重等效 =ρ 浮漂等效 ×V 浮漂 Therefore, K is the magnification factor of the pulley system rope length, and thus, according to formula G... 配重 -G 滑轮 -f 滑轮阻力 =F 配重等效 ×K yields G 配重 To ensure that the thin steel wire rope remains taut during the ascent of the float; when adjusting the number of pulley groups, the maximum stroke that the rope displacement sensor can travel in the monitoring device is 1.5m, and the trenching depth of the underground continuous wall is 19.12m, so the number of pulley groups is determined to be 14 groups.

[0038] (2) Deployment of monitoring devices: After the devices are assembled, they are slowly pushed onto the hardened surface of the site. Since the devices are lightweight, they can be manually carried if necessary until they reach the target location of the diaphragm wall. The principle of avoiding concrete pouring points and areas with dense reinforcement should be followed, and one or more individual devices should be placed at even intervals. For a certain diaphragm wall with a length of 6m, three individual devices are placed at the center point of the diaphragm wall plane and at a horizontal distance of 2.5m from the center point. The tension displacement sensors of the three individual devices are integrated into the industrial control computer through connecting wires, and the underwater concrete liquid level elevation of multiple measuring points is monitored in real time on the industrial control computer.

[0039] (3) Parameter setting and data initialization: After the float is aligned with the top elevation of the guide wall, parameter setting and data initialization are performed. The underground diaphragm wall number is set as BLQ-6-N18 and the diaphragm wall depth is 17.07m. The data to be initialized include the guide wall elevation H0 as 74m and the pulley rope length magnification factor k as 14.

[0040] (4) Real-time monitoring application: After the diaphragm wall is formed and before the underwater concrete is poured, the float is first lowered to the bottom of the diaphragm wall trench. Then, the two underwater concrete pouring points are poured at the same time. Since the float density is greater than the mud density and less than the concrete density, the float of the monitoring device will stay on the surface of the underwater concrete liquid and rise with the rise of the underwater concrete liquid level. The displacement data of the float is scaled by 14 times through the pulley group and transmitted to the rope displacement sensor. The rope displacement sensor uploads the measured data to the monitoring system. After data analysis, the underwater concrete elevation is monitored in real time.

[0041] (5) Balance control during pouring: When the maximum difference in elevation of the underwater concrete liquid surface among the three measuring points is greater than the standard threshold of 50cm, the pouring speed of different underwater concrete pouring points is adjusted to ensure balanced concrete pouring; during the pouring of underwater concrete, the elevation can be deduced from the amount of underwater concrete already poured and compared with the elevation monitored in real time. When the difference is too large, it can be judged that the hole has collapsed.

[0042] (6) Intelligent Early Warning: When the maximum difference in elevation between multiple measuring points of underwater concrete is greater than the standard threshold of 50cm, the system will intelligently prompt that the relative height of the current concrete pouring is uneven; when the interval between underwater concrete pouring exceeds the standard threshold of 30min, the system will intelligently prompt that the interval between underwater concrete pouring is too long; when the difference between the real-time monitoring elevation of underwater concrete and the back-calculated elevation of the poured underwater concrete exceeds the set value of 0.5m, the system will intelligently prompt that the underground continuous wall may have a collapse phenomenon; when the burial depth of the concrete pouring guide pipe is greater than the standard threshold of 2.5m, the system will intelligently prompt the removal of one section of the guide pipe; when the underwater concrete level reaches the target elevation... The system provides intelligent, tiered alerts and warnings for multiple measuring points before elevation determination. Target differences of 5m, 3m, 1m, and 0m are preset. When the underwater concrete surface elevation is 5m from the target elevation, the system intelligently alerts that the current underwater concrete surface elevation is 5m from the target elevation. When the underwater concrete surface elevation is 3m from the target elevation, the system intelligently alerts that the current underwater concrete surface elevation is 3m from the target elevation. When the underwater concrete surface elevation is 1m from the target elevation, the system intelligently alerts that the current underwater concrete surface elevation is 1m from the target elevation. When the difference is 0m, the system intelligently alerts that the underwater concrete pouring is complete.

[0043] (7) When the real-time elevation of underwater concrete at multiple measuring points has exceeded the target elevation, real-time monitoring of underwater concrete pouring for the underground continuous wall is completed.

[0044] (8) After monitoring is completed, remove the counterweight 13, float 18, pulley block 4, rope displacement sensor 9, guide pulley 12, industrial control all-in-one computer 8, and equipment rack in sequence; the removed parts are transferred to the next construction site for use or transported back to the material turnover warehouse for maintenance and storage.

[0045] The above description is not intended to limit the present utility model, nor is the present utility model limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A device for real-time monitoring of underwater concrete elevation in diaphragm walls, characterized in that: The system includes a base rod (1) for locking onto the concrete guide walls (5) on both sides and a pulley assembly (4). A device frame is vertically fixed at the middle of the base rod (1). A pull rope displacement sensor (9) and a guide pulley (12) are installed at the upper end of the device frame. The pulley assembly (4) includes a multi-groove movable pulley (15) and a multi-groove fixed pulley (16). The mounting bracket of the multi-groove fixed pulley (16) is fixedly installed at the lower end of the device frame. The multi-groove movable pulley (15) is located directly above the multi-groove fixed pulley (16). The sensor pull rope (6) of the pull rope displacement sensor (9) is connected to the multi-groove... The mounting bracket of the movable pulley (15) is connected, and the mounting bracket of the multi-groove movable pulley (15) is also connected to the counterweight rope (7). One end of the counterweight rope (7) is connected to the mounting bracket of the multi-groove movable pulley (15), and the other end of the counterweight rope (7) is connected to the counterweight block (13) after passing over the guide pulley (12). A float rope (17) is wound around the multi-groove movable pulley (15) and the multi-groove fixed pulley (16) in multiple passes. The upper end of the float rope (17) is fixedly connected to the multi-groove movable pulley (15), and the lower end of the float rope (17) is hung down and connected to the float (18).

2. The device for real-time monitoring of underwater concrete elevation for diaphragm walls according to claim 1, characterized in that: The base rod (1) includes two parallel horizontal bars. The bottom of the base rod (1) is connected to a support rod (3) for limiting and supporting the vertical surface of the guide wall concrete (5) via a connecting rod (2). Both ends of the support rod (3) are threaded with screws.

3. The device for real-time monitoring of underwater concrete elevation for diaphragm walls according to claim 2, characterized in that: The bottom of the support rod (3) is equipped with a traveling wheel (19).

4. The device for real-time monitoring of underwater concrete elevation for diaphragm walls according to claim 1, characterized in that: An industrial control computer (8) is installed on the equipment rack. The industrial control computer (8) is connected to the pull rope displacement sensor (9) by signal matching. The industrial control computer (8) is equipped with a wireless transmission module. The wireless transmission module transmits the real-time data measured by the pull rope displacement sensor (9) to the cloud space.

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