Rotary excavating hole-forming pile construction quality monitoring system and method

Abstract

The invention provides a rotary excavating hole-forming pile construction quality monitoring system and method. The system comprises a sensor group arranged on the rotary drilling rig, a vehicle-mounted data processing terminal and a remote information management platform, the method comprises the following steps: construction preparation: inputting or selecting a pile number to be constructed in a vehicle-mounted data processing terminal, and obtaining a corresponding design pile position center coordinate and a design pile bottom elevation; aligning and leveling: an operator moves and adjusts the drilling machine according to the hole position deviation displayed by the terminal in real time until the hole position deviation and the perpendicularity meet set threshold values; benchmark calibration is conducted, specifically, a drilling tool is lowered to a ground benchmark point, and depth and elevation benchmark setting operation is executed on the vehicle-mounted data processing terminal; according to the technical scheme, the whole construction process can be throughout, automatic, real-time and high-precision monitoring and recording are achieved, and pile foundation construction is improved fundamentally.

Description

Technical Field

[0001] This invention belongs to the field of intelligent monitoring technology for civil engineering construction, specifically relating to a quality monitoring system and method for rotary drilling pile construction. Background Technology

[0002] In the construction of rotary-drilled cast-in-place piles, the deviation of the hole center, the verticality of the borehole, the drilling depth, and the pile bottom elevation are the core quality control parameters that directly affect the pile quality and bearing capacity. Currently, the monitoring of these key parameters during construction mainly relies on traditional manual operation and post-construction testing using simple mechanical tools, which presents a series of significant technical and management deficiencies.

[0003] For controlling borehole center deviation, existing technologies typically employ a total station for preliminary layout and use cross-shaped retaining piles as borehole position markers. However, in actual construction, drilling rig positioning relies primarily on the operator visually aligning the retaining piles, and its accuracy is greatly affected by human vision, experience, and the site environment, making it difficult to guarantee high-precision positioning. Furthermore, frequent machinery movement at the construction site makes the cross-shaped retaining piles highly susceptible to collision, crushing, damage, or displacement, leading to the loss of borehole position benchmarks. This renders subsequent verification and correction without a reliable basis, severely impacting the planar position accuracy of the piles.

[0004] Currently, borehole verticality control is achieved through post-drilling inspection. Typically, after drilling, a mechanical borehole inspector (cage or rod type) is lowered or an ultrasonic borehole wall gauge is used for measurement. This method can only confirm whether the quality of the drilled hole is acceptable; it cannot monitor the drill rod's inclination angle and direction in real time during drilling. Once verticality deviations are detected, it is often difficult to correct the already drilled section, potentially leading to abandoned holes or requiring costly corrective measures, resulting in project delays and increased costs.

[0005] For controlling drilling depth and pile bottom elevation, depth measurement typically involves manually lowering a measuring rod to the bottom of the hole. Determining the pile bottom elevation requires surveyors to re-measure the top elevation of the casing on-site, then calculate it using the measuring rod readings. This process is not only cumbersome but also requires the drilling rig to completely stop operating to facilitate measurement, leading to frequent interruptions in the construction process. In projects with a large number of piles and tight deadlines, this downtime severely restricts construction efficiency. Furthermore, manual reading and recording also suffers from poor timeliness and a high risk of error.

[0006] In summary, current quality monitoring methods for rotary drilling pile construction have significant shortcomings in terms of accuracy, efficiency, real-time performance, and traceability, and are no longer able to meet the urgent needs of modern, digitalized engineering construction for refined construction management.

[0007] Therefore, there is an urgent need for a technical solution that can be used to monitor and record automatically, in real time, and with high precision throughout the entire construction process, so as to fundamentally improve the quality control level and management efficiency of pile foundation construction. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides a technical solution that enables automatic, real-time, and high-precision monitoring and recording throughout the entire construction process. This system and method for monitoring the quality of rotary-drilled pile construction fundamentally improves the quality control level and management efficiency of pile foundation construction.

[0009] The technical solution of this invention is: a rotary drilling pile construction quality monitoring system, comprising:

[0010] Sensor arrays, vehicle-mounted data processing terminals, and remote information management platforms mounted on rotary drilling rigs;

[0011] The sensor group includes at least a first positioning module for determining the spatial attitude and position of the drill bit, an inclination sensor for measuring the inclination angle of the drill rig mast, and a depth sensing module for measuring the drilling depth.

[0012] The vehicle-mounted data processing terminal is communicatively connected to the sensor group and has a built-in data processing module, which is configured as follows:

[0013] Based on the real-time data from the first positioning module, the real-time planar coordinates of the drill bit center are calculated and compared with the coordinates of the designed pile position center to obtain the real-time hole position deviation.

[0014] Based on the real-time data from the tilt sensor, the real-time verticality of the drilling rig mast is calculated;

[0015] Based on the real-time data from the depth sensing module, the real-time drilling depth from the set reference plane is calculated; and,

[0016] The pile bottom elevation is calculated and output in real time by combining the data from the depth sensing module and the pre-stored elevation benchmark parameters.

[0017] Furthermore, the first positioning module includes two satellite positioning antennas installed at a fixed interval on the drilling rig and a corresponding positioning calculation unit;

[0018] The data processing module calculates the real-time planar coordinates of the drill bit center based on the real-time coordinates of the two satellite positioning antennas through spatial coordinate transformation.

[0019] Furthermore, the tilt sensor is a dual-axis tilt sensor, which is fixedly installed on the drilling rig mast;

[0020] The real-time verticality K is expressed by the formula... The calculations show that θx and θy are the tilt angles of the drilling rig mast in the front-back and left-right directions, respectively, as measured by the dual-axis tilt sensor.

[0021] Furthermore, the depth sensing module includes a Hall sensor and several permanent magnets. The permanent magnets are fixedly installed at uniform intervals on the side of the fixed pulley that guides the wire rope at the top of the drilling rig. The Hall sensor is installed near the fixed pulley to sense the Hall sensor through which the permanent magnets pass.

[0022] The data processing module counts the pulse signals generated by the Hall sensor and, in conjunction with the circumference of the fixed pulley and the number of permanent magnets, calculates the wire rope winding and unwinding length as the real-time drilling depth.

[0023] Furthermore, the rotary drilling pile construction quality monitoring system also includes: a fixed-height antenna installed on the drilling rig body;

[0024] The data processing module calculates the pile bottom elevation using the following steps:

[0025] During the benchmark calibration phase, the elevation value measured by the fixed-elevation antenna and the initial benchmark value of the depth sensing module are recorded when the bottom of the drill bit contacts the benchmark surface.

[0026] During the drilling process, the elevation value of the fixed-elevation antenna and the real-time value of the depth sensing module are acquired in real time.

[0027] The elevation of the pile bottom is calculated using a formula.

[0028] Furthermore, the vehicle-mounted data processing terminal includes a display interface and an input unit;

[0029] The display interface and input unit are configured as follows:

[0030] Receive or retrieve design pile location parameters;

[0031] The system displays in real-time hole position deviation, real-time verticality, real-time drilling depth, and pile bottom elevation; and...

[0032] Receive operation commands to perform depth zeroing, elevation benchmark setting, or data upload operations.

[0033] Furthermore, the remote information management platform is configured as follows:

[0034] It receives and stores time-series data of the entire construction process uploaded from the vehicle-mounted data processing terminal, forming a digital construction record and providing data traceability, analysis and visualization functions.

[0035] Furthermore, the vehicle-mounted data processing terminal is also configured as follows:

[0036] The process data, including the real-time borehole position deviation, real-time verticality, real-time drilling depth, and pile bottom elevation, are uploaded to the remote information management platform.

[0037] A method for monitoring the construction quality of rotary-drilled bored piles, employing the monitoring system described in any of the preceding methods, is characterized by comprising the following steps:

[0038] S1, Construction preparation: Input or select the pile number to be constructed in the vehicle-mounted data processing terminal to obtain the corresponding design pile center coordinates and design pile bottom elevation;

[0039] S2, Alignment and Leveling: The operator moves and adjusts the drilling rig according to the hole position deviation displayed in real time on the terminal until the hole position deviation and verticality meet the set threshold.

[0040] S3, Benchmark Calibration: Lower the drill bit to the ground benchmark point and perform depth and elevation benchmark setting operations on the vehicle-mounted data processing terminal;

[0041] S4, Drilling Monitoring: Drilling begins, and the data processing module executes synchronously:

[0042] S41, based on the data from the first positioning module, calculates and displays the hole position deviation in real time;

[0043] S42 calculates and displays the verticality of the drilling rig mast in real time based on tilt sensor data;

[0044] S43 calculates and displays the borehole depth in real time based on data from the depth sensing module;

[0045] S44, at least by combining the data from the depth sensing module with the pre-stored elevation parameters, calculates and displays the current pile bottom elevation in real time;

[0046] S5, End of Drilling and Data Archiving: When the pile bottom elevation reaches the design value, the drilling is completed. After the operator confirms the completion, the vehicle-mounted data processing terminal packages and uploads the time-series data of the entire pile construction process to the remote information management platform.

[0047] Furthermore, in S5, the time-series data of the entire process includes timestamps, hole position deviation sequences, verticality sequences, drilling depth sequences, and pile bottom elevation sequences. The data forms an unalterable electronic construction archive in the remote information management platform.

[0048] The beneficial effects of this invention are:

[0049] (1) The Beidou high-precision positioning technology is adopted to realize the centimeter-level real-time calculation of the center plane coordinates of the drilling tool, which completely overcomes the deviation caused by manual visual centering and easy damage to the pile protection, and ensures the plane construction accuracy of the pile position.

[0050] (2) By monitoring the mast tilt angle in real time, the verticality detection is transformed from post-drilling acceptance to real-time monitoring and correction during drilling, which effectively prevents hole quality problems and rework risks caused by tilt deviation.

[0051] (3) The non-contact Hall counting scheme replaces the manual measuring rope, eliminating human errors such as rope extension and reading; combined with the precise elevation benchmark established by the fixed-height antenna, it realizes the automatic, continuous and accurate calculation of the pile bottom elevation, avoiding the errors introduced by repeated manual measurement;

[0052] (4) All key parameters are measured automatically and synchronously, without the need to stop the machine specifically for measurement, which significantly reduces the non-drilling waiting time of the drilling rig, and is especially suitable for large projects with a large number of pile foundations and tight schedules.

[0053] (5) The operator only needs to perform alignment, leveling and final hole judgment based on the real-time data of the terminal, which simplifies the complex process that requires multiple coordinations of surveyors in the traditional mode, reduces coordination difficulty, speeds up the construction pace of single piles, and significantly reduces the input of surveyors, quality inspectors and other personnel.

[0054] (6) After the construction of a single pile is completed, the complete data package is automatically uploaded to the cloud management platform to form a digital construction record with a timestamp that cannot be tampered with, providing a real and authoritative data basis for quality acceptance and accountability. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the construction quality monitoring system for rotary drilling piles in this invention.

[0056] Figure 2 This is a schematic diagram of the construction quality monitoring system for rotary drilling piles in this invention.

[0057] Figure 3 This is a schematic diagram illustrating the principle of calculating the real-time planar coordinates of the drill bit center through spatial coordinate transformation using a satellite positioning antenna in this invention.

[0058] Figure 4 This is a schematic diagram of the depth sensing module in this invention. Detailed Implementation

[0059] Various exemplary embodiments of the invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the invention or its application or use. The invention can be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the invention thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0060] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, without excluding the possibility of encompassing other elements. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0061] like Figure 1 As shown, a construction quality monitoring system for rotary-drilled bored piles is disclosed, comprising:

[0062] Sensor group 20, vehicle-mounted data processing terminal 30 and remote information management platform 40 are placed on drilling rig 10;

[0063] The sensor group 20 includes at least a first positioning module for determining the spatial attitude and position of the drill string, an inclination sensor 22 for measuring the inclination angle of the drill mast 11, and a depth sensing module 23 for measuring the drilling depth of the drill string 12.

[0064] The vehicle-mounted data processing terminal 30 is communicatively connected to the sensor group 20 and has a built-in data processing module configured as follows:

[0065] Based on the real-time data from the first positioning module, the real-time planar coordinates of the center of the drill bit 12 are calculated and compared with the coordinates of the designed pile position center to obtain the real-time hole position deviation.

[0066] The real-time verticality of the drilling rig mast 11 is calculated based on the real-time data from the tilt sensor 22.

[0067] Based on real-time data from depth sensing module 23, the real-time drilling depth from the set reference plane is calculated; and,

[0068] At least by combining the data from the depth sensing module 23 and the pre-stored elevation benchmark parameters, the pile bottom elevation is calculated and output in real time.

[0069] In some embodiments, the first positioning module includes two satellite positioning antennas 21 installed at a fixed interval on the drilling rig and a corresponding positioning calculation unit;

[0070] The data processing module calculates the real-time planar coordinates of the drill bit center by transforming the spatial coordinates based on the real-time coordinates of the two satellite positioning antennas 21.

[0071] Specifically, such as Figure 3 As shown, two satellite positioning antennas ANT1 and ANT2 are fixedly installed on the drilling rig at a certain interval D, with both points and the pile point positions being fixed values. ANT1 and ANT2 receive satellite signals and obtain their respective centimeter-level geodetic coordinates (X1, Y1, Z1) and (X2, Y2, Z2) through carrier phase differential technology. Based on these two coordinates, the azimuth angle α of the drill bit can be calculated. Since the relative positional relationship between ANT1, ANT2 and the drill bit center point P is fixed, let the horizontal offset of point P relative to the center point of the line connecting ANT1 and ANT2 be (Δx, Δy). Then, through spatial coordinate transformation, the design coordinate system coordinates (Xp, Yp) of the drill bit center point P can be calculated in real time. Comparing (Xp, Yp) with the design pile center coordinates (X0, Y0), the real-time hole position deviation (ΔX, ΔY) is obtained.

[0072] As an example of the installation method of the two satellite positioning antennas 21, the two satellite positioning antennas 21 are firmly installed on the main body of the drilling rig 10 or on both sides of the drilling rig mast 11 using a special bracket, with the connection line as horizontal as possible.

[0073] In some embodiments, the tilt sensor 22 is a biaxial tilt sensor, fixedly mounted on the drilling rig mast 11; the real-time verticality K is determined by the formula... The calculations show that θx and θy are the tilt angles of the drilling rig mast in the front-back and left-right directions, respectively, as measured by the dual-axis tilt sensor.

[0074] In some embodiments, the tilt sensor 22 can also be replaced by an inertial measurement unit, which can provide richer attitude information, but is more expensive and more complex to process.

[0075] As an example, when θx = 0.5° and θy = 0.5°, K ≈ 0.87%.

[0076] In some embodiments, such as Figure 2 and 4As shown, the depth sensing module 23 includes a Hall sensor 231 and several permanent magnets 232. The permanent magnets 232 are fixedly installed at uniform intervals on the side of the fixed pulley 13 that guides the wire rope at the top of the drilling rig. The Hall sensor 231 is installed near the fixed pulley 13 to sense the passage of the permanent magnets 232. The Hall sensor 231 does not contact the fixed pulley 13. The data processing module counts the pulse signals generated by the Hall sensor 231 and, in combination with the circumference of the fixed pulley and the number of permanent magnets 232, calculates the wire rope winding and unwinding length as the real-time drilling depth.

[0077] Specifically, when the drill string 12 is raised or lowered, the fixed pulley 13 rotates accordingly, driving the permanent magnet 232 to rotate synchronously. Each time the permanent magnet 232 passes the Hall sensor 231, it generates a pulse signal. The circumference of the fixed pulley 13 is set to C. At the start of depth measurement, the pulses are counted, with an initial count value of N0; the real-time count is N. The length L of the wire rope, i.e., the drilling depth, is calculated using the following formula:

[0078] l=(N-N0)×(C / M)

[0079] Where M is the number of permanent magnets 232 on the fixed pulley 13, and L is the change in drilling depth from the reference plane.

[0080] In some embodiments, the rotary drilling pile construction quality monitoring system further includes: a fixed-height antenna 24 installed on the drilling rig body;

[0081] The steps for the data processing module to calculate the pile bottom elevation are as follows:

[0082] During the benchmark calibration phase, record the elevation value measured by the fixed-elevation antenna and the initial benchmark value of the depth sensing module when the bottom of the drill bit contacts the benchmark surface.

[0083] During the drilling process, the elevation value H of the fixed-elevation antenna is acquired in real time. ant3 And the real-time values ​​of the depth sensing module;

[0084] The elevation of the pile bottom is calculated using a formula.

[0085] Specifically, a fixed-height antenna 24ANT3 is installed on the top of the operator's cab of drilling rig 10; during the benchmark calibration stage, after the drilling rig is positioned and leveled, the contact point between the bottom of the drill bit and the ground is set as the benchmark point; at this time, the geodetic elevation value H of the benchmark surface is measured by ANT3. base Simultaneously, the initial pulse count value N of the depth measurement unit was recorded. base During drilling, the geodetic height H of ANT3 was acquired in real time. ant3 The real-time pulse count N of the depth measurement unit current Since the tilt is negligible after the vehicle body is leveled, H is considered negligible.ant3 It is fixed;

[0086] Calculate the borehole depth using the formula:

[0087] L=(N current -N base )×(C / M)

[0088] Real-time geodetic height of drill string center point P:

[0089] H p =H ant3 -Δh-L

[0090] Wherein, Δh is the fixed height difference between the fixed-height antenna ANT3 and the drill center point P when the drill is placed on the reference surface. This is a constant determined by measurement during system installation.

[0091] The pile bottom elevation (i.e., the hole bottom elevation) is determined by H. p The elevation can be converted to an absolute elevation consistent with the design drawings, and then compared in real time with the design pile bottom elevation.

[0092] In some embodiments, the vehicle-mounted data processing terminal 30 includes a display interface and an input unit;

[0093] The display interface and input unit are configured as follows:

[0094] Receive or retrieve design pile location parameters;

[0095] Real-time display of hole position deviation, real-time verticality, real-time drilling depth, and pile bottom elevation; and,

[0096] Receive operation commands to perform depth zeroing, elevation benchmark setting, or data upload operations.

[0097] Specifically, the vehicle-mounted data processing terminal 30 preferably adopts an industrial-grade ruggedized computer or a high-performance vehicle-mounted controller, which integrates a display interface and input unit. The vehicle-mounted data processing terminal 30 is connected to sensor groups such as the Beidou positioning module, tilt sensor, and Hall effect counter via cable or vehicle network, and has a built-in or external wireless communication module. The vehicle-mounted data processing terminal 30 runs dedicated monitoring software configured to perform the following functions:

[0098] Receiving or retrieving design pile location parameters: The software has a pre-set or accessible database containing all pile foundation design information for the project; operators can input the target pile number in the software interface through the input unit, or select the current pile number to be constructed from the list; based on the pile number, the software automatically retrieves the corresponding design pile location center coordinates (X0, Y0) and design pile bottom elevation H from the database. design It is then loaded into the core computing module as a comparison benchmark.

[0099] Real-time display of core monitoring parameters: The software interface refreshes dynamically, displaying the following real-time calculation results by region or on the same screen:

[0100] Real-time hole position deviation (ΔX, ΔY): usually displayed in numerical and / or graphical form;

[0101] Real-time verticality K: Displayed as a percentage or angle value, and can be combined with trend bars or color indicators (green for qualified, red for exceeding limits) for intuitive prompts;

[0102] Real-time drilling depth L: Displays the current drilling depth in both numerical and progress bar format, and can simultaneously show the percentage of progress relative to the design depth;

[0103] Real-time pile bottom elevation H p : Directly displays the calculated elevation value of the current hole bottom, and simultaneously displays the designed pile bottom elevation H. design Compare;

[0104] Receive operation instructions to execute critical operations: The software interface provides the following virtual controls or menus to receive touch or key input instructions from the operator:

[0105] Depth Zeroing: When the drill bit contacts the ground reference surface, the operator clicks the "Depth Zeroing" button; the software then records the pulse value of the depth measurement unit at this moment as the reference value N. base And will display the depth as zero;

[0106] Elevation benchmark setting: This is usually performed simultaneously with or after "Depth Zeroing"; the operator clicks the "Set Elevation Benchmark" button, and the software records the geodetic height H measured by the fixed-height antenna at this time. ant3 And, in conjunction with the pre-stored elevation difference constant Δh, establish an absolute benchmark for calculating the pile bottom elevation;

[0107] Data upload operation: After the single pile construction is completed, the operator clicks the "Upload" or "Complete" button; the software encapsulates all time-series data packets during the pile construction process and uploads them to the remote information management platform through the wireless communication module.

[0108] As an example of the above operating procedure, guided by the software, the operator first selects the station number and retrieves the design parameters. Then, based on the real-time borehole position deviation displayed on the interface, the drilling rig is moved for alignment, and the outriggers are adjusted for leveling according to the verticality display. After alignment and leveling are completed, the drill bit is lowered to the ground, and the "depth zeroing" and "elevation benchmark setting" processes are executed sequentially. During drilling, the operator only needs to monitor the depth, elevation, and verticality parameters displayed on the interface until the design elevation is approached, at which point the operator prepares for final drilling based on the warning prompts. After final drilling, the data is confirmed and uploaded. Throughout the entire process, all interactions are completed through the display interface and input unit of the vehicle-mounted data processing terminal.

[0109] In some embodiments, the remote information management platform 40 is configured as follows:

[0110] It receives and stores the time-series data of the entire construction process uploaded from the vehicle-mounted data processing terminal 30, forming a digital construction record and providing data traceability, analysis and visualization functions.

[0111] Specifically, the remote information management platform 40 is a cloud-based software system deployed on a cloud server for remote centralized management and in-depth utilization of on-site construction data. The remote information management platform 40 includes a web server, an application server, and a database server. The platform receives encrypted data packets automatically uploaded by each vehicle-mounted data processing terminal via 4G / 5G networks through the internet via open API interfaces or dedicated communication protocols. Each data packet corresponds to the entire construction process time-series data of a single pile, including at least a timestamp sequence and corresponding data on borehole position deviation, verticality, drilling depth, and pile bottom elevation.

[0112] The core functions of the remote information management platform 40 are implemented as follows:

[0113] Data storage and digital record formation: After parsing the received raw data packets, the platform stores them in a structured manner in a time-series database and a relational database; each record is associated with a unique pile number, equipment number, and construction time, automatically generating an immutable and permanently traceable digital construction record, which is equivalent to an "electronic file" for each pile;

[0114] Data traceability function: The platform provides a web-based graphical query interface; authorized users can quickly retrieve and access the complete construction process data of any pile by selecting the project, section, pile number or time range, realizing reverse traceability from result to process;

[0115] Data analysis function: The platform has a built-in analysis engine that can perform statistical and in-depth analysis on stored data; for example: automatically calculate and generate statistical reports on the pass rate of hole formation quality for single piles or batches of piles; analyze the verticality variation curve with depth to help judge geological stability or equipment abnormalities; and summarize the work efficiency data of different units and different periods to conduct construction efficiency analysis.

[0116] Data visualization features: The platform provides multi-dimensional data display views, including:

[0117] Real-time monitoring view: Displays the real-time construction status of all online drilling rigs in the form of a map or list, such as current depth, verticality, and station number, to achieve panoramic visualization of the construction process;

[0118] Historical process playback view: Select single pile data and dynamically replay the change curves of key parameters during the drilling process in animation form, such as hole position, verticality, and depth, to intuitively reproduce the construction process;

[0119] Reports and Charts View: Automatically generates various quality assessment charts, progress statistics charts, etc., and supports exporting and printing.

[0120] In some embodiments, the vehicle-mounted data processing terminal 30 is further configured to:

[0121] The process data, including real-time borehole position deviation, real-time verticality, real-time drilling depth, and pile bottom elevation, is uploaded to the remote information management platform 40.

[0122] Specifically, the vehicle-mounted data processing terminal 30 undertakes the critical task of summarizing and uploading on-site data; the vehicle-mounted data processing terminal 30 has a built-in or connected wireless communication module, such as a 4G / 5G DTU, and its software system is configured to execute the following data upload process:

[0123] Step 1: During construction, the software binds the real-time hole position deviation, real-time verticality, real-time drilling depth and pile bottom elevation output by the core calculation module with the corresponding high-frequency timestamps (such as 1 record per second) to form a process data stream, and temporarily caches it in local storage.

[0124] Step 2: The data upload operation is mainly triggered by two types of events:

[0125] Periodic automatic upload: During construction, the software is set to package the cached process data at fixed time intervals (e.g., every 10 minutes) and automatically upload it to the remote information management platform to achieve remote near real-time monitoring of construction progress.

[0126] Event-based final upload: When the construction of a single pile is completed, the operator issues a command through the input unit (such as clicking the "Final Drilling Confirmation" button), and the software immediately starts the final upload program. At this time, the software encapsulates all continuous process data of the pile from "Depth Zeroing" to the moment of final drilling confirmation, along with metadata such as pile number and construction start and end time, into a complete data package;

[0127] Step 3: The software calls the communication module to send the above data packets to the server interface specified by the remote information management platform via the wireless network; a verification mechanism is used during the transmission process to ensure data integrity;

[0128] Step 4: If the upload fails due to network interruption, the software will persistently store the data packet locally and automatically retransmit it after the network is restored, ensuring that the data is not lost.

[0129] In the above embodiments, the vehicle-mounted data processing terminal 30 realizes a closed loop from real-time data acquisition to synchronization with the remote platform 40, ensuring the integrity, continuity and traceability of quality data throughout the construction process.

[0130] In some embodiments, the combination of a Hall sensor and a permanent magnet in the depth sensing module 23 can be replaced by an absolute encoder. The absolute encoder is directly connected to the shaft of the fixed pulley via a coupling. By reading the absolute angle value during the encoder's rotation, the number of rotations and angle of the pulley are calculated, and thus the wire rope travel is calculated. This solution is also non-contact and highly accurate, but the installation structure is relatively more complex.

[0131] Based on the monitoring system in any of the above embodiments, a method for monitoring the construction quality of rotary bored piles is disclosed, comprising the following steps:

[0132] S1, Construction preparation: Input or select the pile number to be constructed in the vehicle-mounted data processing terminal 30, and obtain the corresponding design pile center coordinates and design pile bottom elevation;

[0133] S2, Alignment and Leveling: The operator moves and adjusts the drilling rig 10 according to the hole position deviation displayed in real time on the terminal until the hole position deviation and verticality meet the set threshold.

[0134] S3, Benchmark Calibration: Lower the drill string 12 to the ground benchmark point and perform depth and elevation benchmark setting operations on the vehicle-mounted data processing terminal 30;

[0135] S4, Drilling Monitoring: Drilling begins, data processing module executes synchronously:

[0136] S41, based on the data from the first positioning module, calculates and displays the hole position deviation in real time;

[0137] S42, based on data from tilt sensor 22, calculates and displays the verticality of drilling rig mast 11 in real time;

[0138] S43, based on data from depth sensing module 23, calculates and displays borehole depth in real time;

[0139] S44, at least by combining the data from the depth sensing module 23 and the pre-stored elevation parameters, calculate and display the current pile bottom elevation in real time;

[0140] S5, End of Drilling and Data Archiving: When the pile bottom elevation reaches the design value, the drilling is completed. After the operator confirms the completion, the vehicle-mounted data processing terminal 30 packages and uploads the time-series data of the entire pile construction process to the remote information management platform 40.

[0141] In some embodiments, to ensure accurate hole completion and avoid over-drilling or under-drilling, the vehicle-mounted data processing terminal 30 is configured with an intelligent early warning function; in step S4, when the real-time calculated pile bottom elevation is close to the designed pile bottom elevation, the vehicle-mounted data processing terminal issues an early warning prompt.

[0142] Specifically, in step S4, the data processing module calculates the current pile bottom elevation H in real time. p At the same time, it is continuously compared with the design pile bottom elevation H retrieved from the design parameters. design A comparison is made; a preset warning threshold is established, and when the condition |H is met in real-time calculation... p -H design If the elevation is less than or equal to the preset threshold, it is determined to be close to the design elevation, and an early warning mechanism is triggered; the vehicle data processing terminal issues a warning simultaneously through its display interface and audio equipment.

[0143] In some embodiments, in step S5, the time-series data of the entire process includes timestamps, hole position deviation sequences, verticality sequences, drilling depth sequences, and pile bottom elevation sequences. The data forms an immutable electronic construction archive in the remote information management platform.

[0144] The various embodiments of the present invention have now been described in detail. To avoid obscuring the concept of the invention, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0145] The embodiments described above only illustrate some implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A quality monitoring system for rotary-drilled bored pile construction, characterized in that, include: Sensor arrays, vehicle-mounted data processing terminals, and remote information management platforms mounted on rotary drilling rigs; The sensor group includes at least a first positioning module for determining the spatial attitude and position of the drill string, an inclination sensor for measuring the inclination angle of the drill rig mast, and a depth sensing module for measuring the drilling depth. The vehicle-mounted data processing terminal is communicatively connected to the sensor group and has a built-in data processing module, which is configured as follows: Based on the real-time data from the first positioning module, the real-time planar coordinates of the drill bit center are calculated and compared with the coordinates of the designed pile position center to obtain the real-time hole position deviation. Based on the real-time data from the tilt sensor, the real-time verticality of the drilling rig mast is calculated; Based on the real-time data from the depth sensing module, the real-time drilling depth from the set reference plane is calculated. as well as, The pile bottom elevation is calculated and output in real time by combining the data from the depth sensing module and the pre-stored elevation benchmark parameters.

2. The rotary drilling pile construction quality monitoring system according to claim 1, characterized in that: The first positioning module includes two satellite positioning antennas installed at a fixed interval on the drilling rig and a corresponding positioning calculation unit; The data processing module calculates the real-time planar coordinates of the drill bit center based on the real-time coordinates of the two satellite positioning antennas through spatial coordinate transformation.

3. The rotary drilling pile construction quality monitoring system according to claim 1, characterized in that: The tilt sensor is a dual-axis tilt sensor, which is fixedly installed on the drilling rig mast; The real-time verticality K is expressed by the formula... The calculations show that θx and θy are the tilt angles of the drilling rig mast in the front-back and left-right directions, respectively, as measured by the dual-axis tilt sensor.

4. The rotary drilling pile construction quality monitoring system according to claim 1, characterized in that: The depth sensing module includes a Hall sensor and several permanent magnets. The permanent magnets are fixedly installed at uniform intervals on the side of the fixed pulley that guides the wire rope at the top of the drilling rig. The Hall sensor is installed near the fixed pulley to sense the passage of the permanent magnets. The data processing module counts the pulse signals generated by the Hall sensor and, in conjunction with the circumference of the fixed pulley and the number of permanent magnets, calculates the wire rope winding and unwinding length as the real-time drilling depth.

5. The rotary drilling pile construction quality monitoring system according to claim 1, characterized in that, Also includes: Fixed-altitude antenna mounted on the body of the drilling rig; The data processing module calculates the pile bottom elevation using the following steps: During the benchmark calibration phase, the elevation value measured by the fixed-elevation antenna and the initial benchmark value of the depth sensing module are recorded when the bottom of the drill bit contacts the benchmark surface. During the drilling process, the elevation value of the fixed-elevation antenna and the real-time value of the depth sensing module are acquired in real time. The elevation of the pile bottom is calculated using a formula.

6. The rotary drilling pile construction quality monitoring system according to claim 1, characterized in that: The vehicle-mounted data processing terminal includes a display interface and an input unit; The display interface and input unit are configured as follows: Receive or retrieve design pile location parameters; The system displays the real-time hole position deviation, real-time verticality, real-time drilling depth, and pile bottom elevation; and receives operation commands to perform depth zeroing, elevation benchmark setting, or data upload operations.

7. The rotary drilling pile construction quality monitoring system according to claim 1, characterized in that: The remote information management platform is configured as follows: It receives and stores time-series data of the entire construction process uploaded from the vehicle-mounted data processing terminal, forming a digital construction record and providing data traceability, analysis and visualization functions.

8. The rotary drilling pile construction quality monitoring system according to claim 1, characterized in that: The vehicle-mounted data processing terminal is also configured to: The process data, including the real-time borehole position deviation, real-time verticality, real-time drilling depth, and pile bottom elevation, are uploaded to the remote information management platform.

9. A method for monitoring the construction quality of rotary bored piles, employing the monitoring system described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1, Construction preparation: Input or select the pile number to be constructed in the vehicle-mounted data processing terminal to obtain the corresponding design pile center coordinates and design pile bottom elevation; S2, Alignment and Leveling: The operator moves and adjusts the drilling rig according to the hole position deviation displayed in real time on the terminal until the hole position deviation and verticality meet the set threshold. S3, Benchmark Calibration: Lower the drill bit to the ground benchmark point and perform depth and elevation benchmark setting operations on the vehicle-mounted data processing terminal; S4, Drilling Monitoring: Drilling begins, and the data processing module executes synchronously: S41, based on the data from the first positioning module, calculates and displays the hole position deviation in real time; S42 calculates and displays the verticality of the drilling rig mast in real time based on tilt sensor data; S43 calculates and displays the borehole depth in real time based on data from the depth sensing module; S44, at least by combining the data from the depth sensing module with the pre-stored elevation parameters, calculates and displays the current pile bottom elevation in real time; S5, End of Drilling and Data Archiving: When the pile bottom elevation reaches the design value, the drilling is completed. After the operator confirms the completion, the vehicle-mounted data processing terminal packages and uploads the time-series data of the entire pile construction process to the remote information management platform.

10. The method for monitoring the construction quality of rotary-drilled bored piles according to claim 9, characterized in that: In S5, the full-process time-series data includes timestamps, hole position deviation sequences, verticality sequences, drilling depth sequences, and pile bottom elevation sequences. The data forms an unalterable electronic construction archive in the remote information management platform.

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