A method for calibrating the perpendicularity of a drill rod of a rotary drilling rig

Abstract

The present application belongs to the verticality calibration of rotary drilling rig drill pipe and pile construction quality monitoring technical field, the present application discloses a kind of drill rotary drilling rig drill pipe verticality calibration method, including device installation and initial calibration, double-axis inclination angle acquisition, inclination angle compensation filtering, verticality deviation calculation, static calibration judgment, drill pipe posture adjustment, dynamic drilling monitoring and calibration data retention;Through double-axis inclination detection module, the inclination angle data of drill pipe X-axis direction and Y-axis direction are collected, after being excluded, sliding window smoothing and temperature drift compensation, the X-axis verticality deviation value, Y-axis verticality deviation value and integrated verticality deviation value are calculated, and according to the deviation result, the inclination direction prompt, continuous overrun score, sound-light alarm result and calibration record are generated.The beneficial effect is to realize the bidirectional detection of drill pipe verticality, rapid calibration, dynamic monitoring, timely alarm and data traceability, and improve the accuracy of hole formation quality control of rotary drilling rig drilling construction.

Description

Technical Field

[0001] This invention belongs to the field of rotary drilling rig drill rod verticality calibration technology, and particularly relates to a method for calibrating the verticality of drill rods in rotary drilling rigs. Background Technology

[0002] Rotary drilling rigs are widely used in the construction of cast-in-place piles, bridge pile foundations, building foundations, and municipal infrastructure projects. The verticality of the drill rod directly affects the verticality of the borehole, borehole wall stability, the smoothness of rebar cage lowering, pile forming quality, and pile bearing capacity. During drilling, the drill rod is affected by the drilling rig's posture, the drill mast's pitch angle, changes in ground hardness, boulder obstruction, borehole wall friction, and construction vibration, which can easily cause lateral and longitudinal tilting. If not calibrated in time, this can easily lead to borehole position deviation, pile tilting, pile eccentricity, and borehole quality defects. Therefore, a method for calibrating the verticality of rotary drilling rig drill rods is needed. This method involves device installation and initial calibration, dual-axis tilt angle acquisition, tilt angle compensation filtering, verticality deviation calculation, static calibration judgment, drill rod posture adjustment, dynamic drilling monitoring, and calibration data retention. This allows for rapid judgment, precise adjustment, dynamic monitoring, and quality traceability of drill rod verticality.

[0003] The existing technology has at least the following problems that need to be improved: (1) Existing drill rod verticality calibration methods mostly use plumb bob visual inspection, manual experience judgment and theodolite measurement. During the operation, it is greatly affected by construction vibration, airflow disturbance, mud obstruction, site space and manual reading. In addition, it usually requires multiple people to cooperate to complete the observation, shouting and adjustment. The calibration efficiency is low, the repeatability is poor, and it is difficult to obtain the tilt state of the drill rod in the left and right and front and back directions at the same time. This results in the drill rod tilt direction judgment not being intuitive, the deviation calculation being inaccurate and the on-site adjustment efficiency being insufficient.

[0004] (2) Some existing calibration methods are only suitable for static detection when the machine is stopped. They lack continuous acquisition of biaxial inclination during drilling, inclination compensation filtering, continuous over-limit judgment and fixed-distance static verification. They cannot identify the continuous deviation of the drill rod caused by uneven rock and soil hardness, isolated rocks and changes in borehole resistance in a timely manner. At the same time, the existing simple calibration methods lack the retention mechanism for calibration time, static calibration results, dynamic alarm records and static verification records, making it difficult to trace the calibration process after borehole quality problems occur. Summary of the Invention

[0005] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a method for calibrating the verticality of drill rods in rotary drilling rigs. Utilizing principles of dual-axis tilt angle acquisition, compensation filtering, single-axis deviation calculation, comprehensive deviation fusion, laser positioning assistance, dynamic drilling monitoring, continuous exceedance judgment, fixed-distance static verification, and calibration data retention, this method generates compensated dual-axis tilt angles, verticality deviation values, tilt direction indicators, continuous exceedance scores, and calibration records. This enables rapid calibration, dynamic monitoring, timely alarms, and quality traceability of drill rod verticality, solving the problems of low efficiency in manual calibration, incomplete unidirectional detection, delayed detection of drilling deviations, and lack of documentation in the calibration process.

[0006] The technical solution adopted in this invention is as follows: A method for calibrating the verticality of a drill rod in a rotary drilling rig, which is performed using a drill rod verticality calibration device. The calibration device includes a calibration body, a positioning and clamping mechanism, a dual-axis tilt angle detection module, a data processing and display module, auxiliary calibration components, a charging module, and a data storage module, and includes the following steps: S1. Device Installation and Initial Calibration: The calibration body is fixed in the middle of the drill pipe, the positioning and clamping mechanism clamps the calibration body on the outside of the drill pipe, the data processing and display module starts self-test, the dual-axis tilt angle detection module performs zero-point calibration when the drill pipe is stationary, the auxiliary calibration component provides coarse adjustment reference, and the device initial calibration results are generated. S2. Dual-axis tilt angle acquisition: When the drilling rig is stopped, the dual-axis tilt angle detection module acquires the tilt angle data of the drill rod in the X-axis and Y-axis directions, and transmits the X-axis tilt angle and Y-axis tilt angle to the data processing and display module. S3, Tilt Angle Compensation Filtering: The data processing and display module performs sliding window smoothing, outlier removal, and temperature drift compensation on the X-axis tilt angle and Y-axis tilt angle to generate the compensated X-axis tilt angle and compensated Y-axis tilt angle. S4. Verticality Deviation Calculation: The data processing and display module calculates the X-axis verticality deviation value, Y-axis verticality deviation value, and overall verticality deviation value based on the compensated X-axis tilt angle and the compensated Y-axis tilt angle. S5. Static Calibration Judgment: The data processing and display module compares the overall verticality deviation value with the preset verticality allowable deviation threshold. When the overall verticality deviation value is not greater than the preset verticality allowable deviation threshold, a static calibration qualified result is generated; when the overall verticality deviation value is greater than the preset verticality allowable deviation threshold, a static calibration unqualified result is generated. S6. Drill rod posture adjustment: When a static calibration failure result is generated, the data processing and display module generates a tilt direction prompt based on the X-axis verticality deviation value and the Y-axis verticality deviation value. The auxiliary calibration component emits a laser beam and forms a positioning spot. The construction personnel adjust the left and right position of the drilling rig and the pitch angle of the drill mast based on the tilt direction prompt, the comprehensive verticality deviation value and the position of the positioning spot until a static calibration success result is generated. S7. Dynamic Drilling Monitoring: During the drilling operation, the dual-axis tilt angle detection module continuously collects drill rod tilt angle data, and the data processing and display module updates the comprehensive verticality deviation value in real time. When the comprehensive verticality deviation value continuously exceeds the preset verticality allowable deviation threshold, the alarm unit issues an audible and visual alarm, and the construction personnel return to the drill rod posture adjustment steps after stopping the machine; static verification is performed at preset drilling depth intervals during the drilling process. S8. Calibration Data Retention: After drilling is completed, the data storage module saves the calibration time, X-axis tilt angle, Y-axis tilt angle, X-axis verticality deviation value, Y-axis verticality deviation value, comprehensive verticality deviation value, static calibration results, dynamic alarm records, and static verification records.

[0007] As a preferred technical solution of this scheme, S1 specifically includes installation position selection, calibration body fitting, positioning clamping, system self-test, zero-point calibration, and coarse adjustment confirmation; in the installation position selection, the construction personnel select the middle position of the drill rod as the installation position, avoiding the drill rod joint, weld seam, and areas with obvious surface wear; in the calibration body fitting, the anti-slip buffer pad on the inner side of the calibration body is fitted to the outer surface of the drill rod; in the positioning clamping, the construction personnel rotate the rotating handle of the positioning clamping mechanism to make the clamping block fit against the outer surface of the drill rod.

[0008] As a preferred technical solution of this scheme, S2 and S3 specifically include tilt angle synchronous sampling, outlier removal, sliding window smoothing, temperature drift compensation, and compensation angle output; in tilt angle synchronous sampling, the dual-axis tilt angle detection module synchronously collects the X-axis tilt angle, Y-axis tilt angle, and ambient temperature value according to a preset sampling frequency; in temperature drift compensation, the data processing and display module performs temperature drift compensation on the smoothed X-axis tilt angle and smoothed Y-axis tilt angle according to the ambient temperature value, the reference temperature value, and the temperature compensation coefficient.

[0009] As a preferred technical solution of this scheme, S4 specifically includes single-axis deviation calculation, comprehensive deviation fusion, deviation direction identification, and deviation result output; in single-axis deviation calculation, the data processing and display module calculates the X-axis verticality deviation value and the Y-axis verticality deviation value according to the current detected height of the drill pipe, the compensated X-axis tilt angle, and the compensated Y-axis tilt angle; in comprehensive deviation fusion, the data processing and display module calculates the comprehensive verticality deviation value according to the X-axis verticality deviation value and the Y-axis verticality deviation value.

[0010] As a preferred technical solution of this scheme, S5 and S6 specifically include threshold comparison, static result generation, tilt direction prompt, laser positioning assistance, directional attitude adjustment, adjustment process retest and static calibration confirmation; in the directional attitude adjustment, when the display screen shows the left and right tilt prompt, the construction personnel adjust the left and right position of the drilling rig; when the display screen shows the front and back tilt prompt, the construction personnel adjust the pitch angle of the drilling mast.

[0011] As a preferred technical solution of this scheme, S7 specifically includes dynamic acquisition start-up, real-time deviation update, continuous over-limit judgment, audible and visual alarm, shutdown adjustment return, fixed-distance static verification, and complex geological verification interval adjustment; in the continuous over-limit judgment, the data processing and display module calculates the continuous over-limit score based on the number of times the comprehensive verticality deviation value exceeds the preset verticality allowable deviation threshold, the change in the comprehensive verticality deviation value, and the dip angle fluctuation amplitude within the continuous sampling window.

[0012] The beneficial effects of adopting the above technical solution are as follows: By using dual-axis tilt acquisition, tilt compensation filtering, and verticality deviation calculation, the present invention can simultaneously obtain the verticality deviation of the drill rod in both the left-right and front-back directions, reducing the impact of construction vibration, sampling jumps, and temperature drift on the test results; through static calibration judgment, drill rod posture adjustment, laser positioning assistance, and audible and visual alarms, construction personnel can quickly determine the tilt direction and complete the drill rod posture adjustment; through dynamic drilling monitoring, continuous over-limit judgment, fixed-distance static verification, and calibration data retention, continuous deviations can be detected in a timely manner during drilling, and calibration records can be retained, improving the ability to control hole formation quality and trace construction quality.

[0013] The beneficial effects of this invention are as follows: (1) Using the principles of dual-axis tilt angle acquisition, outlier removal, sliding window smoothing and temperature drift compensation, the tilt angle data of the drill rod in the X-axis and Y-axis directions are collected synchronously through the dual-axis tilt angle detection module. The data processing and display module performs outlier removal, sliding window smoothing and temperature drift compensation on the X-axis tilt angle and Y-axis tilt angle to generate the compensated X-axis tilt angle and the compensated Y-axis tilt angle. The technical effect is to obtain stable and reliable bidirectional tilt angle data, which solves the problem that traditional manual visual inspection and single-direction detection are easily affected by construction vibration, sampling jump and temperature change, and cannot fully judge the tilt status of the drill rod in the left and right and front and back directions.

[0014] (2) Utilizing the principles of single-axis deviation calculation, comprehensive deviation fusion, deviation direction identification, and laser positioning assistance, the X-axis verticality deviation value, Y-axis verticality deviation value, and comprehensive verticality deviation value are calculated based on the compensated X-axis tilt angle and the compensated Y-axis tilt angle. Based on the deviation direction, left and right tilt prompts, front and back tilt prompts, and main tilt direction prompts are generated. At the same time, the laser positioner forms a positioning spot to assist in adjusting the left and right position of the drilling rig and the pitch angle of the drill mast. The technical effect is to transform the drill rod tilt state into an adjustment prompt that can be directly observed and executed, solving the problems of theodolite detection relying on multiple people, unintuitive adjustment direction, and low efficiency of on-site calibration.

[0015] (3) By utilizing the principles of dynamic drilling monitoring, continuous over-limit judgment, fixed-distance static verification and calibration data retention, the comprehensive verticality deviation value is continuously updated during the drilling operation of the drilling rig. The continuous over-limit score is calculated based on the number of deviations exceeding the limit within the continuous sampling window, the change in the comprehensive verticality deviation value, and the dip angle fluctuation. When the continuous over-limit score exceeds the alarm threshold, an audible and visual alarm is triggered, and static verification is performed according to the preset drilling depth interval. The technical effect is to realize continuous monitoring during the drilling process, timely shutdown for adjustment, and record the calibration process. This solves the problems that traditional static detection cannot cover the drilling process, the deviation detection is delayed, and the construction quality is difficult to trace. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the invention and do not constitute a limitation thereof.

[0017] Figure 1 This is a flowchart of the static calibration and drill pipe attitude adjustment proposed in this invention; Figure 2 This is a flowchart of the dynamic drilling monitoring and distance verification process proposed in this invention; Figure 3 This is a flowchart of the calibration data retention and construction quality record proposed in this invention. Detailed Implementation

[0018] Example 1: The present invention provides a method for calibrating the verticality of a drill rod in a rotary drilling rig. This method employs a drill rod verticality calibration device, which includes a calibration body, a positioning and clamping mechanism, a dual-axis inclination detection module, a data processing and display module, auxiliary calibration components, a charging module, and a data storage module. The calibration method includes the following steps: device installation and initial calibration, dual-axis inclination acquisition, inclination compensation filtering, verticality deviation calculation, static calibration judgment, drill rod attitude adjustment, dynamic drilling monitoring, and calibration data retention.

[0019] During the device installation and initial calibration steps, the calibration body is fixed in the middle of the drill pipe, the positioning and clamping mechanism clamps the calibration body on the outside of the drill pipe, the data processing and display module starts self-testing, the dual-axis tilt angle detection module performs zero-point calibration when the drill pipe is stationary, the auxiliary calibration component provides coarse adjustment reference, and the device's initial calibration results are generated.

[0020] In the dual-axis tilt angle acquisition step, with the drilling rig stopped, the dual-axis tilt angle detection module acquires the tilt angle data of the drill rod in the X-axis and Y-axis directions, and transmits the X-axis tilt angle and Y-axis tilt angle to the data processing and display module.

[0021] In the tilt angle compensation filtering step, the data processing and display module performs sliding window smoothing, outlier removal, and temperature drift compensation on the X-axis tilt angle and Y-axis tilt angle to generate the compensated X-axis tilt angle and the compensated Y-axis tilt angle.

[0022] In the verticality deviation calculation step, the data processing and display module calculates the X-axis verticality deviation value, Y-axis verticality deviation value, and comprehensive verticality deviation value based on the compensated X-axis tilt angle and the compensated Y-axis tilt angle.

[0023] In the static calibration judgment step, the data processing and display module compares the overall verticality deviation value with the preset verticality allowable deviation threshold. When the overall verticality deviation value is not greater than the preset verticality allowable deviation threshold, a static calibration qualified result is generated; when the overall verticality deviation value is greater than the preset verticality allowable deviation threshold, a static calibration unqualified result is generated.

[0024] During the drill pipe attitude adjustment process, when a static calibration failure result is generated, the data processing and display module generates a tilt direction prompt based on the X-axis verticality deviation value and the Y-axis verticality deviation value. The auxiliary calibration component emits a laser beam and forms a positioning spot. Based on the tilt direction prompt, the comprehensive verticality deviation value, and the position of the positioning spot, the construction personnel adjust the left and right positions of the drilling rig and the pitch angle of the drill mast until a static calibration success result is generated.

[0025] In the dynamic drilling monitoring step, during the drilling operation, the dual-axis tilt angle detection module continuously collects the drill rod tilt angle data, and the data processing and display module updates the comprehensive verticality deviation value in real time. When the comprehensive verticality deviation value continuously exceeds the preset verticality allowable deviation threshold, the alarm unit issues an audible and visual alarm, and the construction personnel stop the machine and return to the drill rod posture adjustment step; during the drilling process, static verification is performed at preset drilling depth intervals.

[0026] In the calibration data retention step, after the drilling is completed, the data storage module saves the calibration time, X-axis tilt angle, Y-axis tilt angle, X-axis verticality deviation value, Y-axis verticality deviation value, comprehensive verticality deviation value, static calibration results, dynamic alarm records, and static verification records.

[0027] Through the above steps, this method can transform the drill pipe verticality calibration from manual plumb line visual inspection and theodolite detection into a rapid on-site calibration process based on dual-axis tilt angle detection, compensation filtering, deviation calculation, display prompts, laser-assisted positioning, dynamic alarms, and data retention. It achieves a combination of static calibration and dynamic monitoring, solving the problems of cumbersome drill pipe verticality calibration operations, incomplete unidirectional detection, delayed detection of deviations during drilling, and insufficient traceability of construction quality.

[0028] Example 2: This example is based on all the above examples. The device installation and initial calibration steps specifically include selecting the installation location, fitting the calibration body, positioning and clamping, system self-test, zero-point calibration, and coarse adjustment confirmation.

[0029] When selecting the installation location, the construction personnel chose the middle position of the drill rod as the installation location, avoiding drill rod joints, welds, and areas with obvious surface wear.

[0030] During the calibration body fitting process, the anti-slip buffer pad on the inner side of the calibration body is attached to the outer surface of the drill rod, so that the arc-shaped inner side of the calibration body matches the shape of the drill rod, and the length direction of the calibration body is kept parallel to the axis of the drill rod.

[0031] During positioning and clamping, the construction personnel rotate the rotating handle of the positioning and clamping mechanism. The rotating handle drives the adjusting screw to rotate, and the adjusting screw pushes the clamping block to move towards the drill rod, so that the clamping block fits against the outer surface of the drill rod and the calibration body is stably fixed on the outside of the drill rod.

[0032] During system self-test, the data processing and display module detects the working status of the dual-axis tilt detection module, display screen, alarm unit, laser positioner, charging module, and data storage module, and displays the self-test results on the display screen.

[0033] During zero-point calibration, when the drill pipe is stationary, the dual-axis tilt angle detection module collects the current X-axis tilt angle and the current Y-axis tilt angle, and the data processing and display module configures the current X-axis tilt angle and the current Y-axis tilt angle as the zero-point reference.

[0034] During the initial adjustment and confirmation, the construction workers observed the position of the level bubble, adjusted it to the center, and confirmed through the display screen that the X-axis tilt angle and Y-axis tilt angle were within the initial allowable range.

[0035] When there is strong electromagnetic interference at the construction site, an insulating pad is placed between the calibration body and the drill rod, and zero-point calibration is performed again to ensure that the acquisition results of the dual-axis tilt angle detection module are not affected by external interference.

[0036] Through the above processing, the device installation and initial calibration steps can ensure a stable fit between the calibration body and the drill pipe, and provide a reliable initial benchmark for subsequent dual-axis tilt acquisition, tilt compensation filtering and verticality deviation calculation, thus solving the problems of unstable installation, inconsistent initial benchmarks and difficulties in rapid on-site debugging of existing calibration devices.

[0037] Example 3: This example is based on all the above examples. The dual-axis tilt acquisition step and tilt compensation filtering step specifically include tilt synchronous sampling, outlier removal, sliding window smoothing, temperature drift compensation, and compensation angle output.

[0038] During tilt angle synchronous sampling, the dual-axis tilt angle detection module synchronously collects the X-axis tilt angle, Y-axis tilt angle, and ambient temperature value according to the preset sampling frequency, and sends the X-axis tilt angle, Y-axis tilt angle, and ambient temperature value to the data processing and display module.

[0039] In the outlier removal process, the data processing and display module determines the angle change between adjacent sampling points based on the continuous sampling sequence. When the angle change exceeds the change threshold, the corresponding sampling point is marked as an outlier sampling point and removed.

[0040] During the sliding window smoothing process, the data processing and display module performs a moving average on the X-axis tilt angle and Y-axis tilt angle after removing abnormal sampling points, generating smoothed X-axis tilt angle and smoothed Y-axis tilt angle.

[0041] In temperature drift compensation, the data processing and display module performs temperature drift compensation on the smoothed X-axis tilt angle and the smoothed Y-axis tilt angle based on the ambient temperature value, the reference temperature value, and the temperature compensation coefficient. The temperature drift compensation is calculated according to Formula 1:

[0042] In Formula 1, The compensated X-axis tilt angle. The compensated Y-axis tilt angle, The X-axis tilt angle after smoothing. The Y-axis tilt angle after smoothing. This is the X-axis temperature compensation coefficient. This is the Y-axis temperature compensation coefficient. This is the current ambient temperature value. This is the reference temperature value.

[0043] In the compensation angle output, the data processing and display module sends the compensated X-axis tilt angle and the compensated Y-axis tilt angle to the verticality deviation calculation step.

[0044] Through the above processing, the dual-axis tilt acquisition step and the tilt compensation filtering step can reduce the impact of construction vibration, instantaneous sampling jumps and temperature changes on the tilt detection results, and solve the problems of large fluctuations in on-site tilt data and insufficient repeatability of static calibration results.

[0045] Example 4: This example is based on all the above examples. The verticality deviation calculation steps specifically include single-axis deviation calculation, comprehensive deviation fusion, deviation direction identification, and deviation result output.

[0046] In the single-axis deviation calculation, the data processing and display module calculates the X-axis verticality deviation value and the Y-axis verticality deviation value based on the current detected height of the drill pipe, the compensated X-axis tilt angle, and the compensated Y-axis tilt angle. The single-axis deviation is calculated according to Formula 2:

[0047] In Formula 2, This represents the X-axis perpendicularity deviation value. This is the Y-axis perpendicularity deviation value. The current measured height of the drill pipe. The compensated X-axis tilt angle. The Y-axis tilt angle after compensation.

[0048] In the comprehensive deviation fusion process, the data processing and display module calculates the comprehensive vertical deviation value based on the X-axis vertical deviation value and the Y-axis vertical deviation value. The comprehensive vertical deviation value is calculated according to Formula 3:

[0049] In Formula 3, To calculate the overall verticality deviation value, This represents the X-axis perpendicularity deviation value. This is the Y-axis perpendicularity deviation value. This indicates the current height of the drill pipe.

[0050] In the deviation direction identification, the data processing and display module generates left and right tilt prompts based on the positive and negative directions of the compensated X-axis tilt angle, generates front and back tilt prompts based on the positive and negative directions of the compensated Y-axis tilt angle, and generates the main tilt direction prompt based on the magnitude of the X-axis verticality deviation value and the Y-axis verticality deviation value.

[0051] In the deviation results output, the display screen shows the compensated X-axis tilt angle, compensated Y-axis tilt angle, X-axis verticality deviation value, Y-axis verticality deviation value, comprehensive verticality deviation value, and main tilt direction prompt in real time.

[0052] Through the above processing, the verticality deviation calculation step can convert the tilt angle data into directly identifiable single-axis deviation, comprehensive deviation, and tilt direction indication, solving the problem that existing manual reading methods cannot simultaneously determine left-right deviation and front-back deviation.

[0053] Example 5: This example is based on all the above examples. The static calibration judgment step and drill pipe attitude adjustment step specifically include threshold comparison, static result generation, tilt direction prompt, laser positioning assistance, directional attitude adjustment, adjustment process retest, and static calibration confirmation.

[0054] In the threshold comparison, the data processing and display module compares the comprehensive verticality deviation value with the preset verticality allowable deviation threshold.

[0055] During static result generation, a static calibration qualified result is generated when the overall verticality deviation value is not greater than the preset verticality allowable deviation threshold; a static calibration unqualified result is generated when the overall verticality deviation value is greater than the preset verticality allowable deviation threshold.

[0056] In the tilt direction prompt, the data processing and display module generates adjustment prompts on the display screen based on the left and right tilt prompt, the front and back tilt prompt, and the main tilt direction prompt.

[0057] In laser-assisted positioning, the laser positioner emits a laser beam perpendicular to the drill rod axis. The laser beam is projected onto the ground or drill mast to form a positioning spot. Construction personnel judge the tilting trend of the drill rod based on the offset direction of the positioning spot.

[0058] During directional attitude adjustment, when the display shows a left-right tilt prompt, the construction personnel adjust the left-right position of the drilling rig; when the display shows a front-back tilt prompt, the construction personnel adjust the pitch angle of the drilling mast.

[0059] During the retesting process, after each adjustment of the drilling rig's left and right position or the drilling mast's pitch angle, the dual-axis tilt angle detection module re-collects the X-axis tilt angle and Y-axis tilt angle, and the data processing and display module recalculates the comprehensive verticality deviation value.

[0060] During static calibration confirmation, when the overall verticality deviation value is not greater than the preset verticality allowable deviation threshold, and two consecutive adjustment processes both generate static calibration qualified results, the data processing and display module outputs the static calibration confirmation result.

[0061] Through the above processing, the static calibration judgment step and the drill rod attitude adjustment step can transform the drill rod tilt state into visual display information, audio-visual prompts and laser spot references, enabling on-site construction personnel to complete rapid calibration by a single person, solving the problems of traditional theodolite detection relying on multiple people, low communication efficiency and unintuitive adjustment direction.

[0062] Example 6: This example is based on all the above examples. The dynamic drilling monitoring steps specifically include dynamic acquisition start-up, real-time deviation update, continuous over-limit judgment, audible and visual alarm, shutdown adjustment return, fixed-distance static verification, and complex geological verification interval adjustment.

[0063] During dynamic data acquisition, after the static calibration confirmation results are generated, the drilling rig starts drilling operations, and the dual-axis tilt detection module enters continuous data acquisition mode.

[0064] During real-time deviation updates, the dual-axis tilt angle detection module continuously collects the X-axis and Y-axis tilt angles of the drill rod during the drilling process. The data processing and display module calculates the comprehensive verticality deviation value in real time and displays the dynamic monitoring data on the screen.

[0065] In the continuous exceedance judgment, the data processing and display module calculates the continuous exceedance score based on the number of times the comprehensive verticality deviation value exceeds the preset verticality allowable deviation threshold within the continuous sampling window, the change in the comprehensive verticality deviation value, and the tilt angle fluctuation amplitude. The continuous exceedance score is calculated according to Formula 4:

[0066] In Formula 4, For continuous over-limit scoring, This refers to the number of times the overall verticality deviation value exceeds a preset allowable verticality deviation threshold within a continuous sampling window. This represents the total number of sampling points within the continuous sampling window. The weighting coefficient for the change in deviation. To account for the change in the overall verticality deviation value, To preset the allowable verticality deviation threshold, This is the tilt angle fluctuation weighting coefficient. The amplitude of tilt angle fluctuation within the continuous sampling window. The threshold for allowable tilt angle fluctuations.

[0067] In the audible and visual alarm, when the continuous over-limit score exceeds the alarm threshold, the alarm unit issues an audible and visual alarm and displays an over-limit deviation prompt on the display screen.

[0068] During the shutdown and adjustment process, the construction personnel stop drilling operations based on the audible and visual alarms and deviation exceeding the limit prompts, and return to the drill rod attitude adjustment steps to adjust the left and right positions of the drilling rig or the pitch angle of the drill mast until the static calibration confirmation result is regenerated.

[0069] In the static verification of the fixed distance, during the drilling process, every time the preset drilling depth interval is reached, the construction personnel pause the drilling operation and repeat the static calibration and judgment steps to verify the verticality of the drill rod.

[0070] In the adjustment of the verification interval in complex geology, when encountering uneven rock and soil hardness, boulders, and significant changes in borehole wall resistance during drilling, the preset drilling depth interval is shortened and the frequency of static verification is increased.

[0071] Through the above processing, the dynamic drilling monitoring step can distinguish between instantaneous disturbances and continuous deviations, so that the alarm result is not falsely triggered by a single sampling jump. At the same time, it can trigger a shutdown for adjustment before the drilling deviation continues to expand, solving the problems that traditional static detection cannot cover the drilling process and that detection lag makes it difficult to correct hole formation deviations in a timely manner.

[0072] Example 7: This example is based on all the above examples. The calibration data retention steps specifically include construction completion confirmation, final data recording, calibration record storage, data export, device disassembly, and device maintenance.

[0073] During the completion of the drilling operation, the construction personnel stopped the drilling rig and calibration device and confirmed the final calibration status on the display screen.

[0074] In the final data record, the data processing and display module records the final X-axis tilt angle, the final Y-axis tilt angle, the final X-axis verticality deviation value, the final Y-axis verticality deviation value, the final overall verticality deviation value, and the final calibration status.

[0075] In the calibration record storage, the data storage module automatically saves the calibration time, static calibration results, dynamic alarm records, static verification records, final calibration status, and operation records.

[0076] During data export, construction personnel export calibration records via USB interface for construction quality traceability and subsequent data analysis.

[0077] During disassembly, the workers rotate the handle to move the adjusting screw away from the drill rod, allowing the calibration body to be removed from the outside of the drill rod.

[0078] During device maintenance, workers clean the anti-slip buffer pads, laser positioner lenses, display screen surfaces, and positioning clamping mechanisms, and charge the calibration device via the charging module.

[0079] Through the above processing, the calibration data retention step can completely record the drill pipe verticality calibration process, dynamic alarm process, and static verification process, solving the problems of lack of data retention, difficulty in tracing construction quality, and non-standard maintenance of equipment reuse in the existing simple calibration method.

Claims

1. A method for calibrating the verticality of a drill rod in a rotary drilling rig, comprising a drill rod verticality calibration device, the calibration device including a calibration body, a positioning and clamping mechanism, a dual-axis tilt angle detection module, a data processing and display module, auxiliary calibration components, a charging module, and a data storage module, characterized in that: Includes the following steps: S1. Device Installation and Initial Calibration: The calibration body is fixed in the middle of the drill pipe, the positioning and clamping mechanism clamps the calibration body on the outside of the drill pipe, the data processing and display module starts self-test, the dual-axis tilt angle detection module performs zero-point calibration when the drill pipe is stationary, the auxiliary calibration component provides coarse adjustment reference, and the device initial calibration results are generated. S2. Dual-axis tilt angle acquisition: When the drilling rig is stopped, the dual-axis tilt angle detection module acquires the tilt angle data of the drill rod in the X-axis and Y-axis directions, and transmits the X-axis tilt angle and Y-axis tilt angle to the data processing and display module. S3, Tilt Angle Compensation Filtering: The data processing and display module performs sliding window smoothing, outlier removal, and temperature drift compensation on the X-axis tilt angle and Y-axis tilt angle to generate the compensated X-axis tilt angle and compensated Y-axis tilt angle. S4. Verticality Deviation Calculation: The data processing and display module calculates the X-axis verticality deviation value, Y-axis verticality deviation value, and overall verticality deviation value based on the compensated X-axis tilt angle and the compensated Y-axis tilt angle. S5. Static Calibration Judgment: The data processing and display module compares the overall verticality deviation value with the preset verticality allowable deviation threshold. When the overall verticality deviation value is not greater than the preset verticality allowable deviation threshold, a static calibration qualified result is generated; when the overall verticality deviation value is greater than the preset verticality allowable deviation threshold, a static calibration unqualified result is generated. S6. Drill rod posture adjustment: When a static calibration failure result is generated, the data processing and display module generates a tilt direction prompt based on the X-axis verticality deviation value and the Y-axis verticality deviation value. The auxiliary calibration component emits a laser beam and forms a positioning spot. The construction personnel adjust the left and right position of the drilling rig and the pitch angle of the drill mast based on the tilt direction prompt, the comprehensive verticality deviation value and the position of the positioning spot until a static calibration success result is generated. S7. Dynamic Drilling Monitoring: During the drilling operation, the dual-axis tilt angle detection module continuously collects drill rod tilt angle data, and the data processing and display module updates the comprehensive verticality deviation value in real time. When the comprehensive verticality deviation value continuously exceeds the preset verticality allowable deviation threshold, the alarm unit issues an audible and visual alarm, and the construction personnel return to the drill rod posture adjustment steps after stopping the machine; static verification is performed at preset drilling depth intervals during the drilling process. S8. Calibration Data Retention: After drilling is completed, the data storage module saves the calibration time, X-axis tilt angle, Y-axis tilt angle, X-axis verticality deviation value, Y-axis verticality deviation value, comprehensive verticality deviation value, static calibration results, dynamic alarm records, and static verification records.

2. The method for calibrating the verticality of a rotary drilling rig according to claim 1, characterized in that: S1 specifically includes installation location selection, calibration body fitting, positioning and clamping, system self-test, zero-point calibration, and coarse adjustment confirmation. In installation location selection, the construction personnel select the middle position of the drill rod as the installation location, avoiding drill rod joints, welds, and areas with obvious surface wear. In calibration body fitting, the anti-slip buffer pad on the inner side of the calibration body is fitted to the outer surface of the drill rod. In positioning and clamping, the construction personnel rotate the rotating handle of the positioning and clamping mechanism. The rotating handle drives the adjusting screw to rotate, and the adjusting screw pushes the clamping block to move towards the drill rod, so that the clamping block fits against the outer surface of the drill rod.

3. The method for calibrating the verticality of the drill rod of a rotary drilling rig according to claim 2, characterized in that: During the system self-test, the data processing and display module detects the working status of the dual-axis tilt detection module, the display screen, the alarm unit, the laser positioner, the charging module, and the data storage module, and displays the self-test results on the display screen. During zero-point calibration, when the drill rod is stationary, the dual-axis tilt detection module collects the current X-axis tilt angle and the current Y-axis tilt angle, and the data processing and display module configures the current X-axis tilt angle and the current Y-axis tilt angle as the zero-point reference.

4. The method for calibrating the verticality of a rotary drilling rig according to claim 3, characterized in that: Specifically, S2 and S3 include tilt angle synchronous sampling, outlier removal, sliding window smoothing, temperature drift compensation, and compensation angle output. In tilt angle synchronous sampling, the dual-axis tilt angle detection module synchronously collects the X-axis tilt angle, Y-axis tilt angle, and ambient temperature value according to a preset sampling frequency. In outlier removal, the data processing and display module determines the angle abrupt change between adjacent sampling points based on the continuous sampling sequence and removes outlier sampling points. In sliding window smoothing, the data processing and display module performs moving average processing on the X-axis tilt angle and Y-axis tilt angle after removing outlier sampling points. In temperature drift compensation, the data processing and display module generates the compensated X-axis tilt angle and compensated Y-axis tilt angle based on the ambient temperature value, the reference temperature value, and the temperature compensation coefficient.

5. The method for calibrating the verticality of a rotary drilling rig according to claim 4, characterized in that: S4 specifically includes single-axis deviation calculation, comprehensive deviation fusion, deviation direction identification, and deviation result output. In single-axis deviation calculation, the data processing and display module calculates the X-axis verticality deviation value and the Y-axis verticality deviation value based on the current detected height of the drill pipe, the compensated X-axis tilt angle, and the compensated Y-axis tilt angle, respectively. In comprehensive deviation fusion, the data processing and display module calculates the comprehensive verticality deviation value based on the X-axis verticality deviation value and the Y-axis verticality deviation value. In deviation direction identification, the data processing and display module generates left and right tilt prompts based on the positive and negative directions of the compensated X-axis tilt angle, and generates front and back tilt prompts based on the positive and negative directions of the compensated Y-axis tilt angle.

6. The method for calibrating the verticality of the drill rod of a rotary drilling rig according to claim 5, characterized in that: Specifically, S5 and S6 include threshold comparison, static result generation, tilt direction indication, laser positioning assistance, directional attitude adjustment, adjustment process retesting, and static calibration confirmation. In threshold comparison, the data processing and display module compares the comprehensive verticality deviation value with the preset verticality allowable deviation threshold. In laser positioning assistance, the laser positioner emits a laser beam perpendicular to the drill rod axis, which is projected onto the ground or drill mast to form a positioning spot. In directional attitude adjustment, when the display shows a left-right tilt indication, the operator adjusts the left-right position of the drilling rig; when the display shows a front-back tilt indication, the operator adjusts the drill mast pitch angle.

7. The method for calibrating the verticality of a rotary drilling rig according to claim 6, characterized in that: S7 specifically includes dynamic acquisition startup, real-time deviation update, continuous over-limit judgment, audible and visual alarm, shutdown adjustment return, fixed-distance static verification, and complex geological verification interval adjustment; in real-time deviation update, the dual-axis inclination angle detection module continuously collects the X-axis and Y-axis inclination angles of the drill rod during drilling, and the data processing and display module calculates the comprehensive verticality deviation value in real time and displays the dynamic monitoring data on the display screen; in continuous over-limit judgment, the data processing and display module calculates the continuous over-limit score based on the number of times the comprehensive verticality deviation value exceeds the preset verticality allowable deviation threshold, the change in the comprehensive verticality deviation value, and the inclination angle fluctuation amplitude within the continuous sampling window; when the continuous over-limit score exceeds the alarm threshold, the alarm unit issues an audible and visual alarm.

8. The method for calibrating the verticality of a rotary drilling rig according to claim 7, characterized in that: S8 specifically includes construction completion confirmation, final data recording, calibration record storage, data export, device disassembly, and device maintenance; in the final data recording, the data processing and display module records the final X-axis tilt angle, final Y-axis tilt angle, final X-axis verticality deviation value, final Y-axis verticality deviation value, final comprehensive verticality deviation value, and final calibration status; in the calibration record storage, the data storage module automatically saves the calibration time, static calibration results, dynamic alarm records, static verification records, final calibration status, and operation records; in the data export, construction personnel export the calibration records via a USB interface.

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