Underwater concrete pouring guide pipe regulation and control system and regulation and control method thereof

Abstract

The invention provides an underwater concrete pouring guide pipe regulation and control system and a regulation and control method thereof. A conduit; a height automatic monitoring device; a catheter depth measuring device; a pouring volume monitoring device; and a data processing and decision module. Through cooperative acquisition and fusion analysis of multi-source construction information such as concrete pouring interface height, conduit hole entering depth and pouring volume, continuous, automatic and high-precision calculation of conduit burial depth is realized, and the problems of error accumulation and insufficient real-time performance caused by intermittent measurement depending on artificial experience in a traditional construction process are avoided; by synchronously monitoring the concrete interface state and the space position of the guide pipe, the buried depth of the guide pipe is always in a controllable range, so that the risks of quality defects such as frost boiling and mud inclusion caused by too small buried depth are effectively reduced, and pipe blockage and pipe drawing difficulty caused by too large buried depth are reduced; in addition, real-time evaluation and anomaly identification of the construction state can be realized in a complex underwater construction environment.

Description

Technical Field

[0001] This invention relates to the field of underwater concrete pouring, and in particular to an underwater concrete pouring conduit control system and its control method. Background Technology

[0002] Underwater concrete pouring is widely used in water conservancy and hydropower projects, cross-sea bridge foundation engineering, and port and wharf construction, and its construction quality directly affects the overall safety and service durability of the structure. In current engineering practice, the tremie pipe method for underwater concrete pouring is widely used as the mainstream construction technology because it can achieve continuous concrete forming underwater or under high water head conditions. During the tremie pipe construction process, the depth of the tremie pipe embedded in the poured concrete is one of the key control parameters that determines the pouring quality. If the tremie pipe is embedded too shallowly, the freshly mixed concrete is easily damaged by its own weight and impact, resulting in the incomplete setting of the concrete surface layer, causing mud or laitance to be drawn into the concrete, forming quality defects such as slurry heaving and mud inclusion, and in severe cases, even leading to the risk of pile breakage. If the tremie pipe is embedded too deeply, the increased concrete flow resistance will affect the smoothness of material discharge from the pipe, not only increasing the probability of pipe blockage but also significantly increasing the resistance to pipe extraction, making construction operations difficult. Therefore, continuous and accurate monitoring and control of the tremie pipe embedment depth throughout the pouring process is a necessary condition to ensure continuous and dense underwater concrete pouring.

[0003] However, existing methods for monitoring the burial depth of conduits still have significant shortcomings in engineering applications. On the one hand, some monitoring schemes employ high-precision sensing technologies such as fiber optic gratings and pressure sensors to indirectly estimate the location of the concrete interface by sensing changes in water pressure or strain. Such systems are typically complex in structure and expensive, with stringent requirements for installation conditions and maintenance environment. Their long-term stability and reliability are difficult to guarantee under deep hole, highly turbid water, and strongly disturbed construction conditions, limiting their widespread application in practical engineering projects.

[0004] On the other hand, in most construction sites, the burial depth of the tremie pipe still relies mainly on manual measurement. A common practice is for construction workers to intermittently measure the concrete surface using simple tools such as a plumb bob, rope, or measuring tape, and then manually estimate the burial depth based on the tremie pipe length. This method is significantly affected by human experience, resulting in low measurement accuracy. Furthermore, in situations with thick slurry and blurred interfaces, the plumb bob's tactile feedback is easily interfered with, leading to large reading errors. Simultaneously, manual measurement usually requires interrupting the pouring operation, making continuous, real-time dynamic monitoring difficult and failing to promptly detect abnormal changes in the concrete surface or sudden tremie pipe subsidence. In addition, construction workers must frequently perform measurement operations on slippery and narrow work platforms, posing significant safety hazards. Therefore, this paper proposes an underwater concrete pouring tremie pipe control system and its control method to address the above problems. Summary of the Invention

[0005] The main objective of this invention is to provide an underwater concrete pouring guide pipe control system and its control method, which solves the problems of existing underwater concrete pouring processes where the guide pipe burial depth relies on manual experience, monitoring accuracy is low, real-time performance is poor, and it is difficult to detect abnormal working conditions in a timely manner.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an underwater concrete pouring guide pipe control system and its control method, comprising: The guide frame is installed on the ground above the pile hole; The guide pipe is inserted into the pile hole from inside the guide pipe frame and is used for pouring concrete; An automatic height monitoring device, installed on the guide frame, is used to continuously measure the height of the concrete pouring interface; A catheter depth measuring device, which is installed on the catheter holder, is used to measure the insertion depth of the catheter; A concrete pouring volume monitoring device is installed at the feed end of the duct to obtain the real-time concrete pouring volume. The data processing and decision-making module is used to receive data from the automatic height monitoring device, the guide pipe depth measuring device, and the pouring volume monitoring device, and to perform fusion analysis on the received data to generate construction guidance information.

[0007] In the preferred embodiment, the height automatic monitoring device includes a measuring hammer, a steel wire rope, a tension detection unit, and a control unit. The control unit determines the state of the medium in which the measuring hammer is located based on the relationship between the weight of the measuring hammer and the tension of the steel wire rope. When the tension is lower than a preset threshold, it determines that the measuring hammer has reached the concrete interface and records the corresponding lowering depth.

[0008] In the preferred embodiment, the control unit is equipped with a boundary threshold between mud and laitance and a boundary threshold between laitance and concrete. The boundary threshold is a dynamic threshold, and its initial value is set based on the weight of the measuring hammer and the mud parameters at the construction site. It is adjusted according to the characteristics of the tensile depth curve during the measurement process.

[0009] In the preferred embodiment, the control unit uses first-order and second-order difference analysis of the tensile depth curve to identify the location of abrupt changes in the medium and adaptively corrects the boundary threshold.

[0010] In the preferred embodiment, a pile top identification probe is also included, which is preset at the designed pile top elevation. The pile top identification probe is electrically connected to the automatic height monitoring device and is used to assist in confirming whether the concrete has reached the pile top elevation when the measuring hammer enters the preset verification range.

[0011] In the preferred embodiment, the catheter has a multi-segment spliced ​​structure; The catheter depth measuring device includes a main unit, on which an elastic telescopic rod is hinged to the side end face. A roller-type meter counter is provided at the end of the elastic telescopic rod, which is used to roll and contact the outer wall of the catheter and measure the axial displacement of the catheter. The upper and lower sides of the elastic telescopic rod are provided with return springs connected to the main unit housing, so that the roller-type meter counter returns to the contact state after passing the catheter connection.

[0012] In the preferred embodiment, the host integrates an edge computing module, which is configured to: analyze the step characteristics of the roller meter signal to automatically identify the number of disassembled sections of the guide tube, and fuse the number of disassembled sections with the actual measurement data of the roller meter to calculate the real-time insertion depth of the guide tube; The edge computing module is also configured to perform redundancy verification on the real-time insertion depth of the catheter based on the standard length of a single catheter segment, and trigger an error prompt when the verification deviation exceeds a preset threshold.

[0013] In the preferred embodiment, the data processing and decision-making module is configured to calculate the real-time burial depth of the guide pipe based on the real-time insertion depth of the guide pipe, the height of the concrete pouring interface, and the hole depth. The data processing and decision-making module is also equipped with a safety early warning logic based on the real-time burial depth of the conduit, which is used to prompt for continued pouring, attention to burial depth, or pipe pulling operation.

[0014] In the preferred embodiment, the data processing and decision-making module is also equipped with a multi-source information fusion diagnostic unit, which is used to integrate the theoretical rise height of concrete, the measured height and the characteristics of the duct burial depth change to identify the hole expansion or necking conditions.

[0015] The method includes: S1. During the underwater concrete pouring process, obtain the real-time height information of the concrete pouring interface; S2. Simultaneously acquire the displacement information of the pouring guide relative to the orifice or reference plane, and determine the real-time insertion depth of the guide in the hole accordingly.

[0016] S3. Based on the real-time height information of the concrete pouring interface and the real-time insertion depth of the guide pipe, calculate the real-time embedment depth of the guide pipe in the concrete. S4. Obtain the real-time volume of concrete being poured, and perform correlation analysis between the volume of concrete being poured and the real-time height of the concrete pouring interface and the real-time burial depth of the tremie pipe to determine the current pouring status. S5. Based on the pouring status and the real-time burial depth of the guide pipe, generate corresponding construction early warning information and / or construction operation guidance information.

[0017] This invention provides an underwater concrete pouring guide pipe control system and its control method. By collaboratively acquiring and integrating multi-source construction information such as the concrete pouring interface height, guide pipe entry depth, and pouring volume, it achieves continuous, automatic, and high-precision calculation of the guide pipe burial depth, avoiding the error accumulation and insufficient real-time performance problems caused by intermittent measurements based on manual experience in traditional construction processes. Through synchronous monitoring of the concrete interface state and the spatial position of the guide pipe, the burial depth of the guide pipe is always kept within a controllable range, thereby effectively reducing the risk of quality defects such as frost heave and mud inclusion caused by excessive burial depth, and reducing the difficulty of pipe blockage and removal caused by excessive burial depth. In addition, this invention can realize real-time assessment and anomaly identification of the construction status in complex underwater construction environments, providing construction personnel with intuitive and reliable control and early warning information, reducing on-site work intensity and safety risks, and improving the overall safety, stability, and construction quality of the underwater concrete pouring process. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a system layout diagram of the present invention; Figure 2 This is a structural diagram of the catheter depth measuring device of the present invention; Figure 3 This is a hardware system diagram of the highly automated monitoring device of the present invention; Figure 4 This is the logic diagram for determining the position of the concrete pouring interface in this invention; Figure 5 This is a diagram showing the measured concrete pouring height of this invention; Figure 6 This is a diagram showing the measured data of the catheter length of this invention; Figure 7 This is a diagram of the catheter burial depth monitoring and display interface of the present invention.

[0019] In the figure: 1. Guide frame; 2. Automatic height monitoring device; 3. Pile top identification probe; 4. Guide pipe; 5. Guide pipe depth measuring device; 501. Main unit; 502. Elastic telescopic rod; 503. Roller-type meter counter; 504. Return spring; 6. Pouring volume monitoring device. Detailed Implementation

[0020] Example 1 like Figure 1-7 As shown, an underwater concrete pouring guide pipe control system includes: The guide frame 1 is set on the ground above the pile hole.

[0021] The guide pipe 4 is inserted into the pile hole from inside the guide pipe frame 1 and is used for pouring concrete.

[0022] The automatic height monitoring device 2 is installed on the guide frame 1 and is used to continuously measure the height of the concrete pouring interface. In this embodiment, the automatic height monitoring device 2 can adopt the device disclosed in Chinese Patent CN 220167004 U, which mainly includes core components such as a motor, a reel, a steel wire rope, a measuring hammer, a pressure sensing structure, a control unit, and a communication module to realize the automatic lowering / raising of the measuring hammer and the sensing of the tension of the steel wire rope. By sensing the tension, it can determine whether the measuring hammer has contacted the concrete pouring interface, thereby determining the current concrete pouring height.

[0023] The catheter depth measuring device 5 is installed on the catheter holder 1 and is used to measure the insertion depth of the catheter.

[0024] The concrete pouring volume monitoring device 6 is installed at the inlet end of the guide pipe 4 to obtain the real-time concrete pouring volume. Specifically, it can be a flow meter type monitoring device or a weighing type monitoring device.

[0025] The data processing and decision-making module is used to receive data from the automatic height monitoring device 2, the guide pipe depth measuring device 5, and the pouring volume monitoring device 6, and to perform integrated analysis on the measured height of the concrete pouring interface, the real-time insertion depth of the guide pipe 4, and the pouring volume, and generate construction guidance information.

[0026] Furthermore, the control unit of the automatic altitude monitoring device 2 is specifically configured to execute the following logic: The judgment is based on the relationship between the weight G of the measuring hammer and the real-time tension F; When F> At that time, it was determined that the measuring hammer was in the mud; when <F≤ At that time, it was determined that the measuring hammer was in the slurry; When F≤ At that time, it was initially determined that the measuring hammer had reached the concrete interface; in, This is the threshold separating mud and laitance. This is the threshold separating laitance from concrete.

[0027] In the preferred scheme, to improve the reliability of the judgment, the threshold is... and threshold The threshold is dynamically adjusted based on the real-time mud specific gravity and tensile depth curve characteristics.

[0028] The initial threshold is set as follows: ; ; In the formula, To measure the weight of the medium itself; The density of the mud; It is the acceleration due to gravity; To measure the equivalent volume of the medium within the medium; This is a safety correction amount used to compensate for measurement noise and adhesion disturbances; This is the separation margin set based on the density difference between laitance and concrete; where, , The initial value is determined based on historical construction data or test data.

[0029] The threshold is dynamically updated by recording the tensile depth curve in real time during the measurement process and analyzing its first-order and second-order differences. ; ; In the formula, This is the first-order difference value of the tensile force as a function of depth; The depth interval between two adjacent sampling points; Acceleration characteristics used to characterize changes in tensile force in order to identify locations of abrupt changes in the medium.

[0030] The threshold is dynamically corrected when one of the following characteristics is detected: overall drift of the tensile curve; significant change in the thickness of the slurry layer; or change in the slurry density during the measurement period.

[0031] The threshold correction formula is: ; In the formula, This is the corrected second judgment threshold; The second threshold value before correction; This is an empirical correction coefficient used to adjust the threshold correction magnitude; It is the first-order difference mean of the tension change within the most recent measurement window.

[0032] This design allows the initial value of the threshold to closely match the field parameters, reducing initial misjudgments; dynamically adapts to fluctuations in operating conditions, preventing threshold failure; improves the accuracy of medium judgment through curve differential analysis; and balances experience with real-time data, reducing manual intervention and increasing the reliability of automated measurement.

[0033] In a preferred embodiment, a pile top identification probe 3 is also included, which is preset at the pile top elevation. The pile top identification probe 3 is electrically connected to the automatic height monitoring device 2 and is used to accurately identify the position of the concrete interface at the pile top. Specifically, it can be one or more of a temperature sensing unit, a resistivity / conductivity sensing unit, or a micro-mechanical resistance detection unit. The temperature sensing unit utilizes the exothermic characteristic of concrete hydration reaction and can determine that the concrete has reached the elevation by monitoring the temperature change point. The resistivity / conductivity sensing unit identifies the interface position by the significant difference in the electrical properties of the concrete. The micro-mechanical resistance detection unit has a micro blade or damping rod at the front end that can rotate or swing slightly and is connected to a micro torque or displacement sensor. When the probe is in a fluid, the rotational resistance is small. Once it is wrapped by concrete before initial setting, the resistance increases significantly, and the system determines that the concrete interface has been reached by detecting this resistance change.

[0034] The control unit of the height automatic monitoring device 2 is further configured to read the data of the pile top identification probe 3 when the measuring hammer is lowered into the preset verification range centered on the designed pile top elevation. Only when the conditions of F≤ and the probe data conforming to the characteristics of concrete are met can it be confirmed that the concrete has been poured to the pile top elevation.

[0035] This design, through a dual verification mechanism of the measuring hammer and the pile top identification probe 3, effectively avoids misjudgments that may be caused by factors such as mud disturbance, local scum, sensor drift or accidental contact with the borehole wall that may occur with a single judgment method. It significantly improves the accuracy and robustness of the pile top interface judgment, and provides a reliable technical guarantee for precise irrigation control and prevention of under-irrigation or over-irrigation.

[0036] In the preferred embodiment, in order to avoid the measuring hammer being affected by the adhesion of laitance or initially set concrete, a set of anti-adhesion measurement timing control strategies is implemented. The control unit of the height automatic monitoring device 2 is further configured to: after determining that the measuring hammer has reached the concrete interface, control the measuring hammer to rise in the upward direction for a preset duration, so that the measuring hammer can detach from the adhesion of the medium surface. After the lifting is completed, keep the measuring hammer stationary. Time allows it to return to a state of free suspension under stress; Then, the measuring medium is lowered again in the downward direction for the next measurement.

[0037] in, and The value is determined based on the initial setting characteristics of concrete, the lifting resistance of the measuring medium, and the adhesion characteristics of the laitance, to ensure that the measuring medium is in a stable and stress-free state without adhesion interference before each measurement begins.

[0038] It should be noted that in underwater concrete pouring conditions, the mud, laitance, and freshly mixed concrete are all in a high moisture content state, and they will not dry or harden in a short period of time.

[0039] The adhesion that may occur during the measurement process of the measuring hammer is mainly temporary adhesion of laitance or freshly mixed concrete. This type of adhesion can be broken and detached during the lifting process and will not have a long-term impact on the measuring structure.

[0040] In this embodiment, by setting a periodic lifting and static timing control for the measuring medium, the measuring medium is restored to a free-hanging state before each measurement, thereby effectively avoiding the cumulative impact of adhering substances on measurement accuracy and ensuring the stability of long-term continuous monitoring.

[0041] This design effectively prevents the measuring hammer from being encased and adhered to by laitance or initially set concrete due to continuous contact, thus ensuring the reliability of long-term, continuous, and automatic cyclic measurement of the device under unattended conditions. Furthermore, the static interval... The concrete liquid level below is allowed to rise naturally a certain distance between two measurements, ensuring that the concrete liquid level that the measuring hammer contacts each time it is lowered is in a natural and stable state, unaffected by the previous measurement. This improves the representativeness of the single measurement result and the accuracy of the overall monitoring data, thereby achieving a highly reliable and fully automatic liquid level tracking mechanism.

[0042] In this embodiment, the conduit 4 is a multi-segment spliced ​​structure, and each segment of the tube is connected by a boss structure such as a conduit clamp.

[0043] Furthermore, the catheter depth measuring device 5 includes a main unit 501, and an elastic telescopic rod 502 is connected to the side end face of the main unit 501 through a horizontal hinge shaft, so that the elastic telescopic rod 502 can swing up and down in a certain angle range around the hinge shaft.

[0044] In this embodiment, the elastic telescopic rod 502 is an axially telescopic component, consisting of an inner rod, an outer cylinder, a spring, and a guide mechanism. When subjected to axial pressure, the inner rod can be compressed into the outer cylinder, and the spring is compressed to store energy. When the external force is removed, the spring releases energy and drives the inner rod to extend and return to its original length.

[0045] On the upper and lower sides of the outer cylinder of the elastic telescopic rod 502, there are also reset springs 504 connected to the housing of the main unit 501. When the elastic telescopic rod 502 swings up and down due to external lateral force, the reset spring 504 will generate a restoring torque, causing it to quickly swing back to the initial equilibrium position after the external force disappears.

[0046] A roller-type meter counter 503 is installed on the end of the elastic telescopic rod 502. The roller-type meter counter 503 is electrically connected to the internal circuit of the host 501 via a cable.

[0047] It should be noted that the roller-type meter counter 503 has a built-in high-precision incremental forward and reverse encoder, which can monitor the rotation direction of the roller in real time. When the guide tube 4 is lowered, the roller rotates in the forward direction and the encoder outputs a forward pulse signal; when the guide tube is raised, the roller rotates in the reverse direction and the encoder outputs a reverse pulse signal. The host 501 accurately determines the direction of the guide tube movement by analyzing the direction signal of the encoder, and performs increment or decrement calculations on the cumulative length accordingly, thereby achieving bidirectional, high-precision depth tracking.

[0048] With this design, under the preload of the return spring 504, the roller of the roller-type meter counter 503 at its end of the elastic telescopic rod 502 continuously and stably contacts the outer wall of the guide tube 4. When the guide tube moves, the roller rolls along with it, measuring the length of the guide tube's movement in real time. When the roller encounters boss structures such as guide tube flanges or clamps, this composite mechanical structure can work together to achieve adaptive obstacle crossing: First, the axial telescopic characteristics of the elastic telescopic rod 502 allow the roller to be buffered and maintain contact when it is lifted; second, its swing characteristics around the hinge axis allow the roller to slide along the boss contour; finally, after passing the boss, the return spring 504 can quickly pull the entire mechanism back, so that the roller re-stabilizes and adheres to the guide tube surface, thereby ensuring the continuity of the measurement process.

[0049] In the preferred embodiment, in order to improve monitoring accuracy, the host 501 integrates an edge computing module. The edge computing module is configured to analyze the step characteristics of the signal of the roller meter counter 503 to automatically identify the number of disassembled sections of the guide tube, and to calculate the real-time insertion depth of the guide tube by fusing the number of disassembled sections with the actual measurement data of the roller meter counter 503.

[0050] The specific process for automatically identifying the number of disassembled catheter sections includes: the edge computing module monitors and analyzes the high-frequency displacement pulse signal output by the encoder in real time, and sets a short observation time window. Within this window, the module accumulates the displacement pulses and converts them into actual displacement, while analyzing the pulse velocity change pattern. When the following conditions are met simultaneously, the module determines that a catheter disassembly event has occurred: The cumulative displacement exceeds a preset proportional threshold for the standard length of a single catheter segment; The displacement signal completes the displacement in a very short time, and the pulse frequency curve presents a sharp "step" or "pulse group" shape, rather than a gradual change. Based on the encoder direction signal, this rapid movement is determined to be in the "pull-out" direction, meaning the length of the conduit is decreasing; Once the above conditions are met, the edge computing module increments the count of disassembled internal conduit sections by 1.

[0051] Therefore, the edge computing module uses this result to perform data fusion calculation with the actual measurement data of the roller meter 503, so that the total insertion depth of the guide tube no longer depends solely on the original cumulative displacement of the roller, but is intelligently calculated and verified through a more reliable model.

[0052] The specific method is as follows: event recognition and invalid displacement extraction: when the first invalid displacement is recognized... During the next disassembly event, record the displacement corresponding to that event. And this is determined to be an invalid interference displacement. Therefore, the cumulative invalid displacement generated during the catheter disassembly process is: ; In the formula, The total measurement deviation caused by the conduit disassembly event is the cumulative invalid displacement. Total number of identified catheter removal events; For the first The displacement recorded by the meter during the disassembly event does not represent the effective entry depth. This formula is used to remove construction interference from the original signal and restore the true entry depth.

[0053] Real-time insertion depth reconstruction of the conduit: By removing invalid interference displacements from the original cumulative displacement, the real-time insertion depth reflecting the true physical state of the conduit can be obtained. : ; In the formula, This provides the real-time insertion depth of the conduit, which is ultimately output for construction control. The original cumulative displacement measured by the meter counter includes both valid and invalid displacements; this formula achieves high-precision calculation of the true entry depth of the guide tube by eliminating interfering displacements caused by tube slippage during disassembly.

[0054] The preferred solution also includes redundancy verification: combining the standard single-section length of the catheter. Redundancy checks are performed based on the number of catheter sections that have been identified and disassembled. and the net displacement within the current section since the last event The reference manhole depth can be obtained: ; In the formula, These are reference calculated values ​​based on the number of sections and local net displacement; used in conjunction with... The comparison is used for redundancy verification and anomaly self-diagnosis.

[0055] The system will and Real-time comparison is performed, and when the deviation between the two exceeds a preset threshold, an anomaly prompt or self-check is triggered to improve system reliability.

[0056] Furthermore, both the height automatic monitoring device 2 and the catheter depth measuring device 5 are equipped with communication modules, which transmit the measured data to the data processing and decision-making module. The data processing and decision-making module is configured with a calculation model for the real-time burial depth of the catheter. ; In the formula, Real-time burial depth of the catheter; This refers to the real-time insertion depth of the catheter. The measured height of the concrete pouring interface; The depth of the hole, whether designed or measured.

[0057] This design allows for highly reliable data fusion of the originally independently acquired spatial location information of the conduit and the concrete liquid level information within a unified geometric framework.

[0058] Furthermore, the data processing and decision-making module is configured with features based on real-time conduit burial depth. The safety operation logic analysis and early warning unit specifically includes: when When the distance is greater than 6m, it indicates that the catheter should be removed; when When the depth is less than 2m, attention should be paid to the burial depth of the conduit; When 6m> When the depth exceeds 2m, a prompt will be made to continue pouring.

[0059] This design allows the system to accurately calculate the real-time burial depth. It automatically aligns with industry standard safety thresholds, achieving a leap from real-time monitoring to automatic safety assessment. This function transforms the traditional burial depth control, which relies on human experience, into objective, immediate, and continuous automatic monitoring and alerts. It significantly reduces quality and safety risks caused by human negligence or judgment delays, and is a key automated link in ensuring the safety and quality of underwater concrete pouring construction.

[0060] Furthermore, the data processing and decision-making module is also equipped with a multi-source information fusion diagnostic unit, used for real-time analysis and judgment of the pouring process status, by integrating the measured height of the concrete pouring interface. Real-time burial depth of catheter and the theoretical rise height of concrete Based on multi-dimensional data, the following core diagnostic logic is executed: If the theoretical rise height of concrete Compared with the measured height The absolute value of the deviation between them is less than the preset allowable fluctuation threshold. ,Right now If so, the current pouring status is determined to be normal.

[0061] If both of the following conditions are met simultaneously, a high-confidence risk of hole enlargement is identified: Theoretical rise height of concrete Significantly greater than the measured height The difference exceeds the threshold for determining hole enlargement. ,Right now ; Real-time burial depth of catheter growth rate The increase is abnormal, exceeding the normal growth rate estimated based on the current pouring speed. of times, .

[0062] If the actual measured height of the concrete Significantly greater than the theoretical ascent height The difference exceeds the anomaly detection threshold. ,Right now If this is triggered, in-depth analysis will be performed, and the system will retrieve the historical force curves of the test hammer at the relevant depth range within the corresponding time period: If the average resistance shown by the curve is consistently significantly higher than the typical resistance baseline of the slurry layer in this pile hole, it is diagnosed as suspected local necking. Otherwise, the diagnosis is that the slurry layer is too thick.

[0063] This design enables the system to go beyond threshold monitoring of a single parameter based on the fusion and correlation analysis of multi-source data, achieving early and automatic identification and differentiation of hidden working conditions such as hole enlargement and necking, and providing predictive decision support for construction.

[0064] Furthermore, the data processing and decision-making module transmits monitoring data to the cloud platform via a wireless transmission module, and displays parameters such as the guide pipe entry depth, concrete pouring height, and guide pipe burial depth through a display terminal.

[0065] Example 2 Further illustrating with reference to Embodiment 1, as shown in Figures 3-7, a method for controlling an underwater concrete pouring duct employs the underwater concrete pouring duct control system from Embodiment 1. This method includes: S1. During the underwater concrete pouring process, real-time height information of the concrete pouring interface is obtained; specifically, based on the dynamic change of the tension on the measuring hammer of the automatic height monitoring device 2, the state of the medium in which the measuring hammer is located is adaptively judged, and when approaching the design pile top elevation, the data of the pre-embedded pile top identification probe 3 is called for dual-source verification, thereby obtaining the measured height of the concrete pouring interface.

[0066] S2. Simultaneously acquire the displacement information of the pouring guide relative to the orifice or reference plane, and determine the real-time insertion depth of the guide in the hole based on this information; analyze the step characteristics of the displacement signal through the edge computing module, automatically identify the guide disassembly event and the cumulative number of disassembled sections, and perform fusion calculation and cross-verification on the displacement information based on this information to determine the real-time insertion depth of the guide in the hole.

[0067] S3. Based on the real-time height information of the concrete pouring interface and the real-time insertion depth of the guide pipe, calculate the real-time burial depth of the guide pipe in the concrete.

[0068] S4. Obtain the real-time volume of concrete poured, and perform correlation analysis between the volume of concrete poured and the real-time height of the concrete pouring interface and the real-time burial depth of the tremie pipe to determine the current pouring status.

[0069] S5. Based on the pouring status and the real-time burial depth of the guide pipe, generate corresponding construction early warning information and / or construction operation guidance information.

[0070] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An underwater concrete pouring guide pipe control system, characterized by: include: The guide frame (1) is set on the ground above the pile hole; The guide pipe (4) is inserted into the pile hole from inside the guide pipe frame (1) and is used for pouring concrete; An automatic height monitoring device (2) is installed on the guide frame (1) to continuously measure the height of the concrete pouring interface; The catheter depth measuring device (5) is installed on the catheter holder (1) and is used to measure the insertion depth of the catheter; A concrete pouring volume monitoring device (6) is installed at the feed end of the guide pipe (4) to obtain the real-time concrete pouring volume. The data processing and decision-making module is used to receive data from the height automatic monitoring device (2), the guide pipe depth measuring device (5) and the pouring volume monitoring device (6), and to perform fusion analysis on the received data and generate construction guidance information.

2. The underwater concrete pouring guide pipe control system according to claim 1, characterized in that: The height automatic monitoring device (2) includes a measuring hammer, a steel wire rope, a tension detection unit and a control unit. The control unit determines the state of the medium where the measuring hammer is located based on the relationship between the weight of the measuring hammer and the tension of the steel wire rope. When the tension is lower than the preset threshold, it determines that the measuring hammer has reached the concrete interface and records the corresponding lowering depth.

3. The underwater concrete pouring guide pipe control system according to claim 2, characterized in that: The control unit is equipped with a boundary threshold between mud and laitance and a boundary threshold between laitance and concrete. The boundary threshold is a dynamic threshold, and its initial value is set based on the weight of the measuring hammer and the mud parameters at the construction site. It is adjusted according to the characteristics of the tensile depth curve during the measurement process.

4. The underwater concrete pouring guide pipe control system according to claim 3, characterized in that: The control unit uses first-order and second-order difference analysis of the tensile depth curve to identify the location of abrupt changes in the medium and adaptively corrects the boundary threshold.

5. The underwater concrete pouring duct control system according to any one of claims 1-4, characterized in that: It also includes a pile top identification probe (3) pre-set at the designed pile top elevation position. The pile top identification probe is electrically connected to the height automatic monitoring device (2) and is used to assist in confirming whether the concrete has reached the pile top elevation when the measuring hammer enters the preset verification range.

6. The underwater concrete pouring guide pipe control system according to claim 1, characterized in that: The catheter (4) has a multi-segment splicing structure; The catheter depth measuring device (5) includes a main unit (501), on which an elastic telescopic rod (502) is hinged to the side end face. A roller-type meter counter (503) is provided at the end of the elastic telescopic rod (502) for rolling contact with the outer wall of the catheter and measuring the axial displacement of the catheter. The upper and lower sides of the elastic telescopic rod (502) are provided with return springs (504) connected to the housing of the main unit (501) so that the roller-type meter counter (503) returns to the contact state after passing the connection of the catheter (4).

7. The underwater concrete pouring guide pipe control system according to claim 6, characterized in that: The host (501) integrates an edge computing module, which is configured to: analyze the step characteristics of the signal of the roller meter counter (503) to automatically identify the number of disassembled sections of the conduit, and calculate the real-time insertion depth of the conduit by fusing the number of disassembled sections with the actual measurement data of the roller meter counter (503). The edge computing module is also configured to perform redundant verification of the real-time insertion depth of the catheter based on the standard length of a single section of the catheter (4). When the verification deviation exceeds the preset threshold, an abnormal prompt is triggered.

8. The underwater concrete pouring guide pipe control system according to claim 7, characterized in that: The data processing and decision-making module is configured to calculate the real-time burial depth of the guide pipe (4) based on the real-time entry depth of the guide pipe, the height of the concrete pouring interface and the hole depth. The data processing and decision-making module is also equipped with a safety early warning logic based on the real-time burial depth of the conduit, which is used to prompt for continued pouring, attention to burial depth, or pipe pulling operation.

9. The underwater concrete pouring guide pipe control system according to claim 8, characterized in that: The data processing and decision-making module is also equipped with a multi-source information fusion diagnostic unit, which is used to integrate the theoretical rise height of concrete, the measured height and the characteristics of the duct burial depth change to identify the expansion or narrowing of the hole.

10. A method for controlling underwater concrete pouring tremie pipes, characterized by: The method using the underwater concrete pouring guide pipe control system according to any one of claims 1-9 includes: S1. During the underwater concrete pouring process, obtain the real-time height information of the concrete pouring interface; S2. Simultaneously acquire the displacement information of the pouring guide pipe (4) relative to the orifice or reference surface, and determine the real-time insertion depth of the guide pipe (4) accordingly. S3. Based on the real-time height information of the concrete pouring interface and the real-time insertion depth of the guide pipe (4), calculate the real-time embedment depth of the guide pipe (4) in the concrete. S4. Obtain the real-time pouring volume of concrete and perform correlation analysis between the pouring volume and the real-time height of the concrete pouring interface and the real-time burial depth of the guide pipe (4) to determine the current pouring status. S5. Based on the pouring status and the real-time burial depth of the guide pipe (4), generate corresponding construction early warning information and / or construction operation guidance information.

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