Foundation pile core drilling monitoring device and monitoring and early warning method thereof

Abstract

The invention is suitable for the technical field of foundation pile detection, and relates to a foundation pile drill core monitoring device and a monitoring and early warning method thereof, the foundation pile drill core monitoring device comprises a rotating speed module, a displacement module, one or more physical parameter acquisition modules in a mechanical monitoring module and a central processing module, and the mechanical monitoring module comprises a torsion module and / or a pressure module; the rotating speed module, the displacement module, the torsion module and the pressure module are each internally provided with a sensor, a signal processing unit and a data communication unit. According to the method, detection, monitoring and integration of multiple physical parameters in the core drilling process are achieved, the accuracy, reliability and efficiency of the detection result of the core drilling method are greatly improved, the technical potential of the core drilling method is fully explored, and a more reliable and complete guarantee is provided for foundation pile engineering quality evaluation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of foundation pile detection, and particularly relates to a foundation pile core drilling monitoring device and a monitoring and early warning method thereof. BACKGROUND

[0002] As an important means of foundation pile quality detection, the core drilling method can directly obtain the entity core sample of the pile body concrete, thereby accurately evaluating the concrete strength, pile body integrity, pile bottom sediment thickness and bearing stratum rock-soil properties. Compared with indirect detection methods such as low strain method and acoustic wave transmission method, the core drilling method has irreplaceable advantages: first, through laboratory compressive strength test and core sample appearance quality analysis, the concrete density, crack distribution and strength grade can be directly judged; second, the pile bottom sediment form and bearing stratum contact state can be directly observed, avoiding misjudgment. Especially in large-diameter bored piles or projects with higher bearing capacity requirements, the detection results of the core drilling method are often used as the key basis for final acceptance, providing scientific support for foundation pile engineering quality detection.

[0003] However, although the core drilling method has the above-mentioned advantages, it still faces a series of severe challenges in engineering practical application. First, the core drilling process is easily affected by equipment performance and personnel operation level. If the parameters such as drill speed and down pressure are not properly controlled, the core sample may be broken, resulting in core failure and covering up the real defects. Second, the interference of human factors on the detection results cannot be ignored. Some on-site personnel may cover up quality problems by replacing core samples and tampering with data, seriously weakening the objectivity and authority of the detection. In addition, the core drilling method belongs to semi-damaged detection, and the hole needs to be repaired after drilling. Due to the additional cost and influence on the pile structure caused by the repair work, the detection agency usually has very high requirements for the core success rate of single detection.

[0004] In order to improve the accuracy and reliability of core drilling detection, it is particularly important to conduct real-time monitoring of the whole process and multiple parameters of the core drilling process. The existing technology lacks synchronous monitoring and recording means for physical parameters such as drill speed, down pressure, drill torque or torsion, and drilling displacement in the core drilling process, which makes it difficult to ensure the integrity of the core sample and the authenticity of the sample during the drilling process, greatly affecting the accuracy and reliability of the core drilling method detection results.

[0005] Therefore, how to realize real-time, synchronous and accurate collection and monitoring of key physical parameters in the whole core drilling process, and how to provide early warning for abnormal working conditions through data analysis technology to improve the accuracy and reliability of the core drilling method detection results are problems that need to be solved by personnel in this technical field. SUMMARY

[0006] In view of the deficiencies of the prior art, the purpose of the present application is to provide a pile core drilling monitoring device to solve the problem of lack of synchronous monitoring and recording means for physical parameters in the process of pile detection by the core drilling method in the prior art, which affects the accuracy and reliability of the detection results of the core drilling method; in addition, the present application also provides a monitoring and early warning method for the pile core drilling monitoring device.

[0007] In order to solve the above technical problems, the present application adopts the following technical solutions: In a first aspect, the present application provides a core drilling monitoring device, comprising: One or more physical parameter acquisition modules in the rotation speed module, the displacement module and the mechanical monitoring module, the mechanical monitoring module comprising a torque module and / or a pressure module; the rotation speed module is used to measure the rotation speed of the rotating mechanism during the core drilling process, the displacement module is used to measure the displacement of the rotating mechanism drilled into the pile body during the core drilling process, the torque module is used to measure the torque required for the drill bit to cut the pile body during the core drilling process, and the pressure module is used to measure the downward pressure received by the rotating mechanism during the core drilling process; a central processing module is used to acquire data from the physical parameter acquisition module in real time; the rotation speed module, the displacement module, the torque module and the pressure module all contain sensors, signal processing units and data communication units, which are used to transmit the collected physical parameter data to the central processing module through wired or wireless means.

[0008] Further, the rotation speed module contains one or more rotation speed sensors, which are installed on the rotary driver or the rotating mechanism to measure the rotation speed of the rotating mechanism.

[0009] Further, the displacement module contains one or more displacement sensors, which are installed on the tower top or the lifting driver to measure the travel of the rotating mechanism during the core drilling process, obtain the displacement drilled into the pile body, and calculate the drilling speed in cooperation with the time interval of displacement data sampling.

[0010] Further, the torque module contains one or more torque / torsion sensors, which are installed in the area between the rotating mechanism and the drill bit from the rotary driver, used to measure the torque or torsion required for the drill bit to rotate and cut the pile body, or installed in series with the main shaft inside the rotary driver, to directly obtain the size of the output torque or torsion of the rotary driver.

[0011] Further, the pressure module contains one or more pressure sensors, which are installed in the area between the rotating mechanism and the drill bit from the lifting driver, or installed inside the lifting driver, to directly measure the size of the output pressure of the lifting driver.

[0012] Furthermore, the central processing module is used to locally store the acquired physical parameter data (rotation speed, pressure, torque, and displacement, etc.) and support export, and / or communicate with the monitoring center or data server via a 4G / 5G network.

[0013] Furthermore, it also includes a spatial positioning module that is communicatively connected to the central processing module. The spatial positioning module uses one or both of BeiDou positioning and laser positioning to obtain the location information (latitude, longitude, elevation, or relative position at the pile testing site) of the core drilling equipment. The central processing module is used to send the location information to the monitoring center so that the collected physical parameter data is automatically associated with the corresponding pile files.

[0014] Secondly, the present invention also provides a monitoring method for a pile core drilling monitoring device, applied to the aforementioned pile core drilling device, comprising the following steps: S1. Deploy the core drilling equipment above the designated foundation pile and keep the equipment in normal working condition; S2. Install one or more physical parameter acquisition modules from the speed module, displacement module, torque module, and pressure module into the core drilling equipment; S3. Align the time of each module and set a uniform sampling interval; S4. Start the core drilling equipment; S5. When the drill bit contacts the core drilling area of ​​the foundation pile, all modules simultaneously start data acquisition to obtain the current time in real time. t and torque F Rotation speed w ,pressure N and displacement D One or more physical parameters; S6, due to the stroke of the lifting drive H Limited, in order to meet the sampling length L The drive rod is lifted multiple times, and after connecting the extension drill rod, core drilling continues. During the lifting process, data acquisition is stopped or the data is marked as non-core drilling state. S7. After the drill bit reaches the previous stopping position, repeat steps S5 and S6 until the required depth is reached. S8, Central Processing Module will time t and torque F Rotation speed w ,pressure N and displacement D One or more physical parameter data are stored or transmitted to the monitoring center's data server to monitor the core drilling process; Furthermore, when the pile core drilling monitoring device also includes a spatial positioning module, the monitoring method further includes step S9: sending the spatial positioning information of the core drilling equipment to the server through the central processing module to realize the automatic association between the real-time collected data and the cored pile file.

[0015] Furthermore, when cracks or debris appear in a section of the pile, the density of that section will be lower than the normal pile density range. At this time, the core drilling equipment used for core sampling will rotate at a certain speed. w Torque F ,pressure N Drilling speed v and rotational power P 转 and drilling power P 压 The parameters will all change accordingly.

[0016] Rotational power P 转 It can be achieved through core drilling equipment at a certain speed w Torque F and the drill bit's rotation radius r To calculate: P 转 = T · ω = F · r · ω = F · r ·(2π w / 60) in, T The torque of the rotating mechanism, ω The angular velocity of the rotating mechanism, w The rotational speed of the rotating mechanism is usually expressed in revolutions per minute (rpm).

[0017] Drilling power P 转 Through pressure N and drilling speed v To calculate: P 压 = N · v = N ·△D / △t Where △D is the difference between two consecutive data acquisitions from the displacement sensor, and △t is the time interval between the two data acquisitions.

[0018] Thirdly, the present invention also provides an early warning method for a pile core drilling monitoring device, applied to the aforementioned pile core drilling device, comprising the following steps: S10. Based on the site geology, design requirements, construction process, and the condition of the foundation pile itself, set early warning levels for the physical parameters of the drilling direction and rotation direction respectively; S20. When the pile core drilling monitoring device includes a pressure module and / or a displacement module, an early warning shall be issued in the drilling direction if any of the following events occur: Event 1: When only the displacement module is installed, during the core drilling process of the foundation pile, the downward pressure power of the lifting drive is kept basically constant. When the drilling speed increases, different levels of warnings are issued according to the changes in the drilling speed. Event 2: When only the pressure module is installed, during the core drilling process of the foundation pile, the downward pressure of the lifting drive is kept basically constant. When the downward pressure decreases, different levels of warnings are issued according to the changes in the downward pressure. Event 3: When installing the pressure module and displacement module, if one or more of the following occurs during the core drilling process of the foundation pile: increased drilling speed, decreased pressing power, or decreased pressing pressure, different levels of warnings will be issued based on the changes in drilling speed, pressing power, and pressing pressure. S30. When the pile core drilling monitoring device includes a torque module and / or a rotation speed module, if any of the following events occur in the rotation direction, an early warning will be issued in the rotation plane direction: Event 1: When only the rotation speed module is installed, during the core drilling process of the foundation pile, the rotation power of the rotary drive is kept basically constant. When the rotation speed of the rotating mechanism increases, different levels of warnings are issued according to the changes in rotation speed. Event 2: When only the torque module is installed, during the core drilling process of the foundation pile, the rotational power of the rotary drive is kept basically constant. When the rotational torque of the rotating mechanism decreases, different levels of warnings are issued according to the changes in torque. Event 3: When installing the torque module and speed module, if one or more of the following occurs during the core drilling process of the foundation pile: an increase in rotational speed, a decrease in rotational power, or a decrease in rotational torque, different levels of warnings will be issued based on the changes in rotational speed, rotational power, and torque. S40. When the device includes a displacement module, while issuing an early warning, the location of the pile body corresponding to the early warning event is determined based on the collected drilling displacement, thereby realizing the location of the pile body defect.

[0019] Compared with the prior art, the pile core drilling monitoring device and its monitoring and early warning method provided by the present invention have at least the following advantages: Existing technologies lack methods for synchronous monitoring and recording of physical parameters during core drilling, such as drill bit rotation speed, downward pressure, drill bit torque, and drilling displacement. This makes it difficult to guarantee the integrity and authenticity of the core sample during drilling, significantly impacting the accuracy and reliability of core drilling test results. This invention addresses this by adding multiple physical parameter acquisition modules to existing core drilling equipment, enabling comprehensive monitoring and early warning of the pile core drilling process. This effectively ensures the integrity of the core extraction process and the authenticity of the sample. Each physical parameter acquisition module collects key parameters such as rotation speed, downward pressure, drill bit torque, and drilling displacement in real time. After processing, these parameters are transmitted to a central processing module for real-time monitoring of the core drilling process. Furthermore, by introducing a spatial positioning module, this invention can obtain precise positioning information of the core drilling equipment in real time. Based on this positioning information, the data server at the monitoring center automatically associates the data with the corresponding pile's file, accurately binding the real-time collected physical parameter data to the specific pile. This invention enables simultaneous monitoring and early warning of multiple physical parameters during core drilling, significantly improving the accuracy, reliability, and efficiency of data management, fully leveraging the technical potential of the core drilling method, and providing a more reliable and comprehensive guarantee for the quality assessment of foundation pile engineering. Attached Figure Description

[0020] To more clearly illustrate the solution of the present invention, a brief introduction will be given to the drawings used in the description of the embodiments below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a structural block diagram of a pile core drilling monitoring device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a pile core drilling monitoring device installed on a core drilling equipment, according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the mechanical monitoring module in a pile core drilling monitoring device provided in an embodiment of the present invention; Figure 4 A flowchart illustrating a monitoring method for a pile core drilling monitoring device provided in an embodiment of the present invention; Figure 5 A flowchart illustrating an early warning method for a pile core drilling monitoring device provided in an embodiment of the present invention; Reference numerals: 101-Displacement module; 102-Speed ​​module; 103-Torque module; 104-Pressure module; 105-Mechanical monitoring module; 1051-Rotating body; 1052-Pressure sensor; 1053-Clamping component; 1054-Torque sensor; 1055-Signal processing unit; 1056-Protective housing; 201-Drill bit; 202-Core tube; 203-Drill rod; 204-Drive rod; 205-Tower; 206-Steel cable; 207-Lock; 208-Lifting drive; 209-Rotating drive; 30-Foundation pile. Detailed Implementation

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are for ease of description only, and should not be construed as limiting the technical solution.

[0023] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order. In the specification, claims, and accompanying drawings of this invention, when an element is referred to as "fixed to," "mounted to," "disposed of," or "connected to" another element, it may be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it may be directly or indirectly connected to that other element.

[0024] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] This invention provides a pile core drilling monitoring device, applied during the core drilling method for pile testing. The pile core drilling monitoring device includes: The system includes one or more physical parameter acquisition modules from the following: a rotation speed module, a displacement module, and a mechanical monitoring module. The mechanical monitoring module includes a torque module and / or a pressure module. The rotation speed module measures the rotational speed of the rotating mechanism during core drilling. The displacement module measures the displacement of the rotating mechanism into the pile body during core drilling. The torque module measures the torque or force required for the drill bit to cut the pile body during core drilling. The pressure module measures the downward pressure on the rotating mechanism during core drilling. A central processing module is used to acquire data from the physical parameter acquisition modules in real time. Each of the rotation speed module, displacement module, torque module, and pressure module contains sensors, a signal processing unit, and a data communication unit, used to transmit the acquired physical parameter data to the central processing module via wired or wireless means.

[0026] This invention enables the detection, monitoring, and integration of multiple physical parameters during the core drilling process, greatly improving the accuracy, reliability, and efficiency of core drilling test results. It fully explores the technical potential of core drilling and provides a more reliable and complete guarantee for the quality assessment of foundation pile engineering.

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] This invention provides a pile core drilling monitoring device, applied during the core drilling method for pile testing. The device is installed on existing core drilling equipment and combined with… Figures 1 to 2 In this embodiment, the core drilling equipment includes a trapezoidal tower 205. A collar 207 is connected to the bottom of the top of the tower 205 via a steel cable 206. A drive rod 204 is fitted below the collar 207. The drive rod 204 is depressed and rotated under the drive of a lifting driver 208 and a rotating driver 209. Its bottom is rigidly connected to a drill rod 203 or a locking handle. The locking handle can rigidly connect the drive rod 204 and the drill rod 203 or rigidly connect multiple sections of the drill rod 203. The lower part of the drill rod 203 is rigidly connected to... The core tube 202 is connected to the drill bit 201, which is rigidly connected to the bottom of the core tube 202. The drive rod 204, locking handle, drill rod 203, core tube 202, and drill bit 201 form a rotating mechanism. Before core drilling, the tower 205 must be accurately erected vertically above the foundation pile 30 to prevent tilting or displacement during operation. During core drilling, the lifting drive 208 and the rotating drive 209 work together to drive the rotating mechanism to rotate and drill down. The core sample is retained in the core tube 202 and is taken out as the rotating mechanism is lifted.

[0029] Furthermore, in this embodiment, combined with Figures 1 to 2The pile core drilling monitoring device includes a displacement module 101, a rotation speed module 102, a torque module 103, a pressure module 104, a spatial positioning module, and a central processing module. The displacement module 101 is mounted on the tower 205 or the lifting drive 208 to detect the displacement of the rotating mechanism as the core drills descend. The displacement is transmitted to the central processing module via a data bus after passing through a signal processing unit and a data communication unit. The rotation speed module 102 is mounted on the collar 207 or the rotary drive 209 to detect the rotational speed of the rotating mechanism. The rotational speed is transmitted to the central processing module via a data bus after passing through a signal processing unit and a data communication unit. The torque module 103 detects the rotational torque or torque of the rotating mechanism during core drilling. The torque is transmitted to the central processing module via a data bus after passing through a signal processing unit and a data communication unit. The system includes a pressure module 104, which detects the pressure of the drill core descending via the rotating mechanism. This pressure is transmitted to the central processing module via a data bus after passing through a signal processing unit and a data communication unit. The torque module 103 and pressure module 104 can be combined to form a mechanical monitoring module 105, installed in the area between the rotary drive 209 and the drill bit 201. The central processing module can communicate with the spatial positioning module via the data bus to obtain the latitude, longitude, and elevation of the current drill core location. The central processing module has a real-time data upload function, capable of reporting the spatial positioning information of the drill core and the real-time data from each acquisition module to the server, thus achieving automatic association between the monitoring data and the drilled pile archive. The data bus can use either wired or wireless data transmission.

[0030] In some other embodiments, the displacement module 101, the rotation speed module 102, and the mechanical monitoring module 105 can also be installed in other positions on the core drilling equipment, depending on the actual site conditions. The vertical positional relationship between the torque module 103 and the pressure module 104 is also not fixed, depending on the actual site conditions.

[0031] Furthermore, in this embodiment, combined with Figures 1 to 3The mechanical monitoring module 105 includes a pressure sensor 1052 and a torque sensor 1054. The rotating body 1051 in the mechanical monitoring module 105 is a hollow metal component. The hollow structure does not obstruct the flow of cooling water. Its upper part has an internal thread connecting to a drive rod 204, a locking handle, or a drill rod 203, while its lower part has an external thread connecting to a drill rod 203, a locking handle, or a core tube 202. It can be flexibly installed at multiple positions between the rotary actuator 209 and the core tube 202, and its diameter does not exceed the diameter of the core tube 202, allowing it to pass through the borehole. The pressure sensor 1052 is a ring-shaped hollow pressure sensor or symmetrically arranged columnar pressure sensors. The pressure sensor 1052 is pressed tightly against the rotating body 1051 by a clamping member 1053, causing the lifting actuator 208 to exert downward pressure. The pressure can be transmitted to the drill bit 201; if necessary, the clamping part 1053 and the pressure sensor 1052 are fixed to the rotating body 1051 using through screws, or the pressure sensor 1052 and the clamping part 1053 are tightly connected to the rotating body 1051 using a flange structure; the torque sensor 1054 is fixed perpendicular to the rotating body 1051 and can measure the torque or torque of the drill bit 201 rotation; the signals collected by the pressure sensor 1052 and the torque sensor 1054 are transmitted to the central processing module after passing through the signal processing unit 1055 to realize the monitoring of mechanical parameters; the pressure sensor 1052, the torque sensor 1054 and the signal processing unit 1055 are sealed by the protective shell 1056 to achieve waterproof, dustproof and collision protection during the core drilling process.

[0032] Depending on the type of sensor used and the sensor installation location, the present invention provides the following embodiments of the displacement module 101: Example 1

[0033] In this embodiment, a wire or laser displacement sensor is installed on the top of the tower 205 to measure the displacement from the tower 205 to the collar 207. During core drilling, the rotating mechanism drives the collar 207 downward, and the sensor measures the displacement of the drilled pile body accordingly. When the rotating mechanism is raised, the displacement sensor resets; when drilling resumes, the sensor re-collects data and adds the new displacement value to the previous value, thereby achieving continuous measurement of the drilling displacement. Example 2

[0034] In this embodiment, a displacement sensor is installed between the lifting driver 208 and the rotary driver 209 to measure the stroke of the lifting driver 208 during each lifting operation, thereby obtaining the displacement of the lifting driver 208 each time. By accumulating the descent values ​​multiple times, the total displacement of the drilled pile body can be obtained. Example 3

[0035] In this embodiment, a Beidou positioning device is installed on the upper part of the collar 207. On the one hand, it provides the positioning information of the current core pile in real time, and on the other hand, it provides the altitude of the collar 207. During the core drilling process, the collar 207 moves downward with the drill rod 203 to obtain the displacement of the pile body in a single drilling. By accumulating the descent values ​​multiple times, the total displacement of the pile body can be obtained.

[0036] Depending on the type of sensor used and the sensor installation location, the present invention provides the following embodiments of the speed module 102. Example 1

[0037] In this embodiment, the speed sensor is a Hall sensor. The magnet is attached to the top of the drive rod 204 inside the collar 207, and the probe is installed on the inner wall of the collar 207 to measure the rotation speed of the drive rod 204. Example 2

[0038] In this embodiment, a speed sensor is installed in the rotary actuator to measure the rotational speed provided by the rotary actuator 209.

[0039] This invention also provides a monitoring method for a pile core drilling monitoring device, applied to the pile core drilling monitoring device described in the above embodiments, combined with... Figures 1 to 4 In this embodiment, the monitoring method of the pile core drilling monitoring device includes the following steps: S1. Deploy the core drilling equipment above the designated foundation pile 30 and keep the equipment in normal working condition; S2. Install one or more physical parameter acquisition modules from displacement module 101, rotation speed module 102, torque module 103, and pressure module 104 to the core drilling equipment; S3. Align the time of each module and set a uniform sampling interval; S4. Start the core drilling equipment; S5. When drill bit 201 contacts the core drilling area of ​​pile 30, all modules simultaneously start data acquisition to obtain the current time in real time. t and torque F Rotation speed w ,pressure N and displacement D One or more physical parameters; S6, due to the stroke of the lifting drive 208 H Limited, in order to meet the sampling length L It is necessary to lift the drive rod 204 multiple times, connect the extension drill rod 203 and continue drilling. During the lifting process, data acquisition is stopped or the data is marked as non-drilling state. S7. After the drill bit 201 reaches the previous stopping position, repeat steps S5 and S6 until the required depth is reached. S8, Central Processing Module will time t and torque F Rotation speed w ,pressure N and displacement D One or more physical parameter data are stored or transmitted to the monitoring center's data server to monitor the core drilling process; S9. If a spatial positioning module is installed, the spatial positioning information of the drilling equipment can be sent to the server through the central processing module, so as to realize the automatic association between the real-time data collection and the archive of the drilled pile.

[0040] This invention also provides an early warning method for a pile core drilling monitoring device, applied to the pile core drilling monitoring device described in the above embodiments, combined with... Figures 1 to 5 In this embodiment, the early warning method of the pile core drilling monitoring device includes the following steps: S10. Based on the site geology, design requirements, construction process and the condition of the foundation pile 30 itself, different early warning levels can be set for different physical parameters in the rotation plane and drilling direction. When an early warning event occurs in any parameter in any direction, an early warning will be issued.

[0041] Specifically, taking the setting of drilling speed warning levels as an example, when setting the warning level for drilling speed, the average value of the 50 data points before the current point is used as the benchmark. If there are fewer than 50 data points, the average value of all data points from the start of the sequence to the current point is calculated as the benchmark. A Level 3 warning is set for the upcoming new data points. A Level 1 warning is activated when the drilling speed increases by 10% to 20%, a Level 2 warning is activated when the drilling speed increases by 20% to 30%, and a Level 3 warning is activated when the drilling speed increases by more than 30%.

[0042] S20. When the pile core drilling monitoring device includes at least one pressure module 104 and displacement module 101, an early warning can be issued in the drilling direction when one of the following events occurs: Event 1: When only the displacement module 101 is installed, during the core drilling of the foundation pile 30, the downward pressure power of the lifting drive 208 remains basically unchanged. When the drilling speed increases, different levels of warnings are issued according to the changes in the drilling speed. Event 2: When only pressure module 104 is installed, during the core drilling of foundation pile 30, the downward pressure power of lifting drive 208 is kept basically constant. When the downward pressure decreases, different levels of warnings are issued according to the changes in the downward pressure. Event 3: When installing pressure module 104 and displacement module 101, if one or more of the following occurs during the core drilling of foundation pile 30: increase in drilling speed, decrease in pressure power, or decrease in pressure, different levels of warnings will be issued based on the changes in drilling speed, pressure power, and pressure. S30. When the pile core drilling monitoring device includes at least one torque module 103 and a rotation speed module 102, an early warning can be issued in the rotation plane direction when one of the following events occurs: Event 1: When only the rotation speed module 102 is installed, during the core drilling process of the foundation pile 30, the rotation power of the rotary drive 209 remains basically unchanged. When the rotation speed of the rotating mechanism increases, different levels of warnings are issued according to the change in rotation speed. Event 2: When only torque module 103 is installed, during the core drilling process of foundation pile 30, the rotational power of rotary drive 209 is kept basically constant. When the rotational torque of the rotating mechanism decreases, different levels of warnings are issued according to the changes in torque. Event 3: When the torque module 103 and the speed module 102 are installed, if one or more of the following occurs during the core drilling process of the foundation pile 30: an increase in rotational speed, a decrease in rotational power, or a decrease in rotational torque, different levels of warnings will be issued based on the changes in rotational speed, rotational power, and torque.

[0043] S40. When the pile core drilling monitoring device includes a displacement module 101, the system can issue an early warning message and, based on the drilling displacement collected by the module, determine the pile position corresponding to the early warning event, thereby realizing the location of pile defects.

[0044] Compared with existing technologies, the pile core drilling monitoring device and its monitoring and early warning method described in the above embodiments lack synchronous monitoring and recording means for physical parameters such as drill bit rotation speed, downward pressure, drill bit torque, and drilling displacement during the core drilling process. This makes it difficult to guarantee the integrity of the core sample and the authenticity of the sample during drilling, greatly affecting the accuracy and reliability of the core drilling test results. This invention, by adding multiple physical parameter acquisition modules to the existing core drilling equipment, achieves comprehensive monitoring and early warning of the pile core drilling test process, effectively ensuring the integrity of the core sampling process and the authenticity of the sample. Each physical parameter acquisition module collects key parameters such as rotation speed, downward pressure, drill bit torque, and drilling displacement in real time, processes them, and transmits them to the central processing module to complete real-time monitoring of the core drilling process. Furthermore, by introducing a spatial positioning module, this invention can obtain the precise positioning information of the core drilling equipment in real time. The data server of the monitoring center automatically associates the corresponding pile file based on this positioning information, accurately binding the real-time collected physical parameter data with the specific pile. This invention enables simultaneous monitoring and early warning of multiple physical parameters during core drilling, significantly improving the accuracy, reliability, and efficiency of data management, fully leveraging the technical potential of the core drilling method, and providing a more reliable and comprehensive guarantee for the quality assessment of foundation pile engineering.

[0045] Obviously, the embodiments described above are merely preferred embodiments of the present invention, and not all embodiments. The accompanying drawings illustrate preferred embodiments of the present invention, but do not limit the scope of the patent. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this invention.

Claims

1. A core drilling monitoring device for foundation piles, characterized in that, Installed on the core drilling equipment, the pile core drilling monitoring device includes: One or more physical parameter acquisition modules are selected from the rotation speed module, displacement module, and mechanical monitoring module. The mechanical monitoring module includes a torque module and / or a pressure module. The rotation speed module is used to measure the rotation speed of the rotating mechanism during core drilling. The displacement module is used to measure the displacement of the rotating mechanism into the pile body during core drilling. The torque module is used to measure the torque or torque required for the drill bit to cut the pile body during core drilling. The pressure module is used to measure the downward pressure on the rotating mechanism during core drilling. The central processing module is used to acquire data from the physical parameter acquisition module in real time; The speed module, displacement module, torque module, and pressure module each contain sensors, signal processing units, and data communication units, which are used to transmit the collected physical parameter data to the central processing module via wired or wireless means.

2. The pile core drilling monitoring device according to claim 1, characterized in that, The speed module includes one or more speed sensors, which are mounted on a rotary drive or rotating mechanism to measure the speed of the rotating mechanism.

3. The pile core drilling monitoring device according to claim 1, characterized in that, The displacement module includes one or more displacement sensors, which are mounted on the top of the tower or on the lifting drive, for measuring the downward stroke of the rotating mechanism during core drilling.

4. The pile core drilling monitoring device according to claim 1, characterized in that, The torque module includes one or more torque / torque sensors, which are installed in the region between the rotary drive and the drill bit, or installed inside the rotary drive in series with the spindle.

5. The pile core drilling monitoring device according to claim 4, characterized in that, The pressure module includes one or more pressure sensors, which are installed in the area between the lifting drive and the drill bit of the rotating mechanism, or installed inside the lifting drive.

6. The pile core drilling monitoring device according to claim 1, characterized in that, The central processing module is used to store the acquired physical parameter data locally and support its export, and / or communicate with the monitoring center or data server via a 4G / 5G network.

7. The pile core drilling monitoring device according to claim 1, characterized in that, It also includes a spatial positioning module that is communicatively connected to the central processing module. The spatial positioning module uses one or both of BeiDou positioning and laser positioning to obtain the location information of the core drilling equipment. The central processing module is used to send the location information to the monitoring center so that the collected physical parameter data is automatically associated with the corresponding foundation pile file.

8. A monitoring method using the pile core drilling monitoring device as described in any one of claims 1 to 7, characterized in that, Includes the following steps: S1. Deploy the core drilling equipment above the designated foundation pile and keep the equipment in normal working condition; S2. Install one or more physical parameter acquisition modules from the speed module, displacement module, torque module, and pressure module into the core drilling equipment; S3. Align the time of each module and set a uniform sampling interval; S4. Start the core drilling equipment; S5. When the drill bit contacts the core drilling area of ​​the foundation pile, all modules simultaneously start data acquisition to obtain the current time in real time. t and torque F Rotation speed w ,pressure N and displacement D One or more physical parameters; S6. Lift the drive rod multiple times to meet the sampling length L, connect the extension drill rod and continue drilling. During the lifting process, stop data acquisition or mark the data as non-drilling state. S7. After the drill bit reaches the previous stopping position, repeat steps S5 and S6 until the required depth is reached. S8, Central Processing Module will time t and torque F Rotation speed w ,pressure N and displacement D One or more physical parameter data are stored or transmitted to the monitoring center's data server to monitor the core drilling process.

9. The monitoring method of the pile core drilling monitoring device according to claim 8, characterized in that, When the pile core drilling monitoring device further includes a spatial positioning module, the monitoring method further includes step S9: sending the spatial positioning information of the core drilling equipment to the server through the central processing module to realize the automatic association between the real-time collected data and the cored pile file.

10. A method for early warning using the pile core drilling monitoring device as described in any one of claims 1 to 7, characterized in that, Includes the following steps: S10. Based on the actual engineering conditions, set early warning levels for the physical parameters of the drilling direction and rotation direction respectively; S20. When the pile core drilling monitoring device includes a pressure module and / or a displacement module, an early warning shall be issued if any of the following events occur in the drilling direction: Event 1: Only the displacement module was installed, and the drilling speed increased while the downward pressure power remained basically unchanged; Event 2: Only the pressure module is installed, and the downward pressure decreases when the downward power remains basically unchanged; Event 3: When pressure module and displacement module are installed at the same time, one or more of the following occurs: increased drilling speed, decreased downward pressure power, or decreased downward pressure. S30. When the pile core drilling monitoring device includes a torque module and / or a rotation speed module, an early warning shall be issued if any of the following events occur in the rotation direction: Event 1: Only the speed module is installed, and the speed increases when the rotational power remains basically unchanged; Event 2: Only the torque module was installed, and the torque / torque decreased while the rotational power remained essentially unchanged; Event 3: When a torque module and a speed module are installed at the same time, one or more of the following occurs: increased speed, decreased rotational power, or decreased torque / torque. S40. When the device includes a displacement module, while issuing an early warning, the pile position corresponding to the early warning event is determined based on the collected drilling displacement.

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