Drill rod device capable of sensing working condition in hole and data acquisition method thereof

Abstract

The invention discloses a drill rod device capable of sensing working conditions in a hole and a data acquisition method thereof.The drill rod device comprises a shaft body, a drill bit and a control system, the drill bit is assembled at the bottom end of the shaft body, a round shell is movably connected to the side wall of the shaft body, at least four through grooves are evenly formed in the top face of the round shell, and hole wall flatness detection assemblies are arranged in the through grooves; the detector is used for detecting hole wall flatness; a partition plate is fixedly connected to the inner wall of the round shell, a hole wall detection cavity is formed in the upper side of the partition plate, an in-hole gas detection cavity is formed in the lower side of the partition plate, and a gas detection assembly is arranged in each in-hole gas detection cavity and used for detecting the content of harmful gas in a hole. According to the invention, a probe measurement mode can be utilized to accurately measure a small or large groove area on a hole wall, and an acquisition camera is matched to acquire images in real time so as to construct a drilling three-dimensional model.

Description

Technical Field

[0001] The present invention belongs to the technical field of drilling detection, and particularly relates to a drill rod device capable of sensing working conditions in a hole and a data acquisition method thereof. Background Art

[0002] By collecting data from borehole walls, such as rock type, texture, and fracture distribution, it is possible to infer lithologic variations and geological structures at different depths, helping geologists draw geological profiles and providing fundamental data for mineral resource exploration and geological hazard assessment. Furthermore, real-time collection of data on the borehole walls, such as rock mechanical properties, porosity, and permeability, helps engineers understand formation characteristics and promptly adjust drilling parameters, such as drill bit type, drilling fluid properties, and penetration rate, to improve drilling efficiency and reduce drilling costs.

[0003] Existing data collection methods generally use ultrasonic collection or laser scanning measurement, but the accuracy of ultrasonic measurement is greatly affected by factors such as medium properties and temperature. The measurement accuracy of complex-shaped hole walls is relatively low. It is suitable for hole wall data collection of large-diameter and deep boreholes, while cracks or small holes in the hole walls are easily overlooked. In addition, laser scanning has strict requirements on the measurement environment and is suitable for occasions with high requirements on hole wall measurement accuracy and efficiency. Therefore, laser scanning is not suitable for all borehole measurements due to its high cost. Summary of the Invention

[0004] The purpose of the present invention is to provide a drill rod device and a data acquisition method thereof that can sense the working conditions inside the hole. It can use a probe measurement method to accurately measure smaller or larger groove areas on the hole wall, and cooperate with the acquisition camera to collect images in real time to construct a three-dimensional model of the drilling hole.

[0005] The technical solutions adopted by the present invention are as follows: A drill rod device capable of sensing the working conditions in a hole, comprising a shaft, a drill bit, and a control system. The drill bit is assembled at the bottom end of the shaft. A circular shell is movably connected to the side wall of the shaft. The top surface of the circular shell is evenly provided with at least four through slots. Each of the through slots is provided with a hole wall flatness detection component for detecting the flatness of the hole wall. The inner wall of the circular shell is fixedly connected with a partition, the upper side of the partition is a hole wall detection cavity, and the lower side of the partition is a hole gas detection cavity. The hole gas detection cavity is provided with a gas detection component for detecting the harmful gas content in the hole; A data transmission module is installed on the top surface of the partition, and the data transmission module is wirelessly connected to the control system for transmitting in-hole detection data and receiving instructions; Four compacting components are also provided on the top surface of the circular shell.

[0006] Furthermore, the hole wall flatness detection component includes a bent plate arranged in the through groove, the distance between the two bent plates away from each other and close to one end of the hole wall is greater than the diameter of the circular shell, the side walls of the bent plates are fixedly connected to a rotating shaft, the other end of the rotating shaft is rotatably connected to the side wall of the through groove, the end of the bent plate away from the circular shell is fixedly connected to a wear-resistant plate, and the other end of the bent plate extends into the hole wall detection cavity and is provided with a recording component.

[0007] Furthermore, the recording component includes a cylinder hinged on the top surface of the inner cavity of the circular shell, a round rod is slidably connected to the cylinder, the other end of the round rod is hinged to the bent plate, the side wall of the round rod is located on the outside of the cylinder and an elastic part is provided, the inner wall of the cylinder is fixedly connected to a variable resistor, and one end of the round rod located in the cylinder is fixedly connected to a conductive block, and the conductive block is electrically offset from the variable resistor.

[0008] Furthermore, the elastic member includes a baffle fixedly connected to the side wall of the round rod, the side wall of the round rod is sleeved with a first spring, and two ends of the first spring are respectively fixedly connected to the cylinder and the baffle.

[0009] Furthermore, the gas detection component includes a guide tube fixedly connected to the bottom surface of the inner cavity of the circular shell, the guide tube is an arc-shaped curved structure, and the two ends of the guide tube respectively pass through the bottom surface and side wall of the circular shell. An intake fan is installed at the guide tube on the bottom surface of the circular shell, and multiple gas sensors are installed at the curved part of the side wall of the guide tube. A guide plate is fixedly connected to the inner wall of the guide tube at a position opposite to the gas sensor, and the guide plate is inclined toward the side of the gas sensor.

[0010] Furthermore, an annular plate is fixedly connected to the bottom surface of the circular shell at the guide pipe, and a filter screen is detachably connected to the bottom surface of the annular plate.

[0011] Furthermore, a protective plate is fixedly connected to the inner wall of the guide tube near the outer wall of the circular shell, and the protective plate is arranged to be tilted downward.

[0012] Furthermore, four mounting plates are evenly and fixedly connected to the top surface of the circular shell, and a collection camera and a fill light are respectively installed on the side wall of the mounting plate away from the shaft body.

[0013] Furthermore, the compacting assembly includes a side plate fixedly connected to the top surface of the circular shell, the side walls of the side plate are movably connected to a movable rod, the side walls of the side plate are fixedly connected to a limiting cylinder, one end of the movable rod extends into the limiting cylinder, the side wall of the movable rod is located in the limiting cylinder and is sleeved with a second spring, and the other end of the movable rod is connected to a pressure wheel.

[0014] A data acquisition method capable of sensing working conditions in a hole, the data acquisition method comprising the following steps: S1: The circular shell can be used during drilling or after drilling to inspect the hole wall. The shaft drives the circular shell downward in the drilled hole, while the pressure wheel and the bent plate are both against the hole wall. The bent plate is always kept against the hole wall by the force of the first spring. S2: When one end of the bent plate encounters a depression on the hole wall, the bent plate will be inserted into the depression under the force of the first spring. At the same time, the bent plate moves in the opposite direction through the lever action of the rotating shaft, thereby pulling the conductive block to move on the variable resistor, causing the resistance value of the variable resistor to change. S3: The data transmission module collects the resistance change data of the variable resistor in real time and sends the data to the control system wirelessly according to the set format and frequency. After receiving the detection data sent by the data transmission module, the control system processes the data according to the pre-set analysis method; For example, the received resistance change data is converted into the corresponding hole wall position information and concave degree information. Based on this information, the control system establishes a data buffer in the memory to temporarily store the real-time collected data; S4: Based on the received data, the control system generates a curve chart of the hole wall flatness in real time on the control software interface according to the set time interval or drilling depth interval. The horizontal axis can represent the drilling depth or time, and the vertical axis represents the change in the resistance value of the variable resistor or the corresponding degree of hole wall depression, which is used to visually observe the change in hole wall flatness; S5: At the same time, four acquisition cameras synchronously capture images of the hole wall. The control system extracts feature points in the image through the SIFT algorithm, uses the feature matching algorithm to find the correspondence between the same feature points in the image, uses the triangulation method to perform three-dimensional reconstruction, and calculates the coordinates of each feature point in the three-dimensional space to construct a three-dimensional model of the hole wall.

[0015] The technical effects achieved by the present invention are: The drill rod device of the present invention, which can sense the working conditions inside the hole and the data acquisition method thereof, can use the probe measurement method to accurately measure the smaller or larger groove areas on the hole wall, generate a hole wall flatness curve in real time through the control system, and cooperate with the acquisition camera to collect images in real time to construct a three-dimensional model of the drilling hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic cross-sectional view of the present invention; Figure 3 It is a three-dimensional diagram of the hole wall flatness detection assembly of the present invention; Figure 4 It is a schematic cross-sectional view of the hole wall flatness detection assembly of the present invention; Figure 5 is a perspective view of the compacting assembly of the present invention; Figure 6 is a schematic cross-sectional structural diagram of the compaction assembly of the present invention; Figure 7 This invention Figure 4 A magnified view of point A in the figure; Figure 8 This invention Figure 2 Enlarged view of point B in FIG. Figure 9 It is a curve graph generated by the control system of the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Shaft; 2. Drill bit; 3. Round shell; 4. Through groove; 5. Bend plate; 6. Rotating shaft; 7. Cylinder; 8. Round rod; 9. First spring; 10. Baffle; 11. Conducting block; 12. Variable resistor; 13. Partition; 14. Data transmission module; 15. Guide tube; 16. Inlet fan; 17. Gas sensor; 18. Guide plate; 19. Ring plate; 20. Filter; 21. Protective plate; 22. Side plate; 23. Movable rod; 24. Limiting cylinder; 25. Pressure wheel; 26. Second spring; 27. Wear-resistant plate; 28. Mounting plate; 29. Collection camera. DETAILED DESCRIPTION

[0018] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention. Example 1

[0019] like Figures 1-9 As shown, a drill rod device capable of sensing the working conditions in a hole includes a shaft body 1, a drill bit 2, and a control system. The control system hardware is a computer, and corresponding software needs to be installed in the computer for recording and transmitting data. The drill bit 2 is assembled at the bottom end of the shaft body 1. A circular shell 3 is movably connected to the side wall of the shaft body 1. The top surface of the circular shell 3 is evenly provided with at least four through grooves 4. Each through groove 4 is provided with a hole wall flatness detection component for detecting the flatness of the hole wall. The inner wall of the circular shell 3 is fixedly connected with a partition 13. The upper side of the partition 13 is the hole wall detection cavity, and the lower side of the partition 13 is the hole gas detection cavity. The hole gas detection cavity is provided with a gas detection component for detecting the harmful gas content in the hole; A data transmission module 14 is installed on the top surface of the partition 13. The data transmission module 14 is wirelessly connected to the control system for transmitting in-hole detection data and receiving instructions; Four compacting components are also provided on the top surface of the circular shell 3.

[0020] like Figure 2-Figure 4 As shown, the hole wall flatness detection component includes a bent plate 5 arranged in the through groove 4. The distance between the two bent plates 5 far away from each other and close to one end of the hole wall is greater than the diameter of the circular shell 3. The side walls of the bent plates 5 are fixedly connected with a rotating shaft 6, and the other end of the rotating shaft 6 is rotatably connected to the side wall of the through groove 4. The end of the bent plate 5 away from the circular shell 3 is fixedly connected with a wear-resistant plate 27. The wear-resistant plate 27 is preferably made of ceramic material with smooth texture and high hardness, which is convenient for expansion and contraction on the hole wall. The other end of the bent plate 5 extends into the hole wall detection cavity and is provided with a recording component.

[0021] like Figure 7 As shown, the recording assembly includes a cylinder 7 hinged on the top surface of the inner cavity of the circular shell 3, a round rod 8 is slidably connected to the cylinder 7, the other end of the round rod 8 is hinged to the bent plate 5, the side wall of the round rod 8 is located on the outside of the cylinder 7 and is provided with an elastic member, the inner wall of the cylinder 7 is fixedly connected to a variable resistor 12, and one end of the round rod 8 located in the cylinder 7 is fixedly connected to a conductive block 11, and the conductive block 11 and the variable resistor 12 are electrically offset.

[0022] The variable resistor 12 typically consists of a resistor element and a movable conductive block 11 (also called a wiper or brush). The resistor element is made of a material with a specific resistance value, such as carbon film, metal film, or wound wire. As the conductive block 11 slides across the resistor element, the contact point between it and the resistor element changes, thereby altering the length of the current path through the resistor element. According to the basic principle of resistance, resistance is directly proportional to the length of the conductor and inversely proportional to its cross-sectional area. Therefore, as the conductive block 11 slides, the length of the resistor element connected to the circuit changes, causing the resistance value to change accordingly.

[0023] A potentiometer-type variable resistor 12 typically has three pins: two connected to the ends of the resistor body and one connected to the conductive block 11. As the conductive block 11 slides, the voltage distribution between it and the ends of the resistor body changes. By measuring the voltage between the conductive block 11 and one end of the resistor body, a voltage signal corresponding to the resistance value can be obtained. This voltage signal can be transmitted via wires to the control system. An analog-to-digital converter (ADC) in the control system converts the analog voltage signal into a digital signal. A microcontroller or other control chip can calculate the corresponding resistance value based on the digital signal, thereby monitoring the resistance change of the variable resistor 12.

[0024] like Figure 4 As shown, the elastic member includes a baffle 10 fixedly connected to the side wall of the round rod 8. The side wall of the round rod 8 is sleeved with a first spring 9. The two ends of the first spring 9 are fixedly connected to the cylinder 7 and the baffle 10 respectively.

[0025] Among them, the force of the first spring 9 can be used to make the other end of the bent plate 5 always against the hole wall, so that when the bent plate 5 enters the recessed area, it can drive the conductive block 11 to move through the round rod 8, thereby realizing the change of resistance value and realizing the detection of the recessed area on the hole wall surface. Example 2

[0026] A data acquisition method capable of sensing the working conditions in a hole, the data acquisition method comprising the following steps: S1: The circular shell 3 can be used during the drilling process or after the drilling is completed to inspect the hole wall. The shaft 1 drives the circular shell 3 to move downward in the drilled hole. At the same time, the pressure wheel 25 and the bent plate 5 are both in contact with the hole wall. The bent plate 5 is always kept in contact with the hole wall by the force of the first spring 9. S2: When one end of the bent plate 5 encounters a depression on the hole wall, the bent plate 5 is inserted into the depression under the force of the first spring 9. At the same time, the bent plate 5 moves in the opposite direction through the lever action of the rotating shaft 6, thereby pulling the conductive block 11 to move on the variable resistor 12, causing the resistance value of the variable resistor 12 to change. At the same time, the data transmission module 14 is initialized and set up, including configuring its wireless communication parameters, such as communication frequency band, baud rate, etc., to ensure that it can establish a stable wireless connection with the control system.

[0027] S3: The data transmission module 14 collects the resistance change data of the variable resistor 12 in real time and sends the data to the control system wirelessly according to the set format and frequency. After receiving the detection data sent by the data transmission module 14, the control system processes the data according to the pre-set analysis method; For example, the received resistance change data is converted into the corresponding hole wall position information and concave degree information. Based on this information, the control system establishes a data buffer in the memory to temporarily store the real-time collected data; S4: The control system generates a curve graph of the hole wall flatness in real time on the control software interface according to the received data and the set time interval or drilling depth interval. The horizontal axis can represent the drilling depth or time, and the vertical axis represents the resistance change of the variable resistor 12 or the corresponding hole wall depression degree, which is used to visually observe the change of the hole wall flatness; S5: At the same time, the four acquisition cameras 29 synchronously collect images of the hole wall. The control system extracts feature points in the image through the SIFT algorithm, uses the feature matching algorithm to find the correspondence between the same feature points in the image, uses the triangulation method to perform three-dimensional reconstruction, and calculates the coordinates of each feature point in the three-dimensional space to construct a three-dimensional model of the hole wall.

[0028] When drilling is complete or the preset detection endpoint is reached, the rotation and feed of the rotating rod stop, the data transmission module 14 stops sending data, and the control system also stops data collection and graph updating. The operator can analyze the generated graph on the control system's software interface to determine whether the hole wall flatness meets the requirements and determine the location and extent of the indentation on the hole wall. Based on the analysis results, the control system can generate a detailed detection report, including statistics on the hole wall flatness, a list of indentation locations, and a graph for subsequent review and reference.

[0029] like Figure 9 As shown, when the end of the bent plate 5 enters point a, it indicates that the hole wall is a small concave area; When the end of the bent plate 5 enters point c from point b, a long deep concave area exists on the surface hole wall; When the end of the bent plate 5 enters point d, a deeper hole area exists on the surface hole wall. Example 3

[0030] Based on Example 1, this embodiment specifically discloses a gas detection component: like Figure 2 and Figure 8 As shown, the gas detection component includes a guide tube 15 fixedly connected to the bottom surface of the inner cavity of the circular shell 3. The guide tube 15 is an arc-shaped curved structure. The two ends of the guide tube 15 respectively pass through the bottom surface and side wall of the circular shell 3. An inlet fan 16 is installed on the bottom surface of the circular shell 3 at the guide tube 15. A plurality of gas sensors 17 are installed at the bending part of the side wall of the guide tube 15. A guide plate 18 is fixedly connected to the position of the inner wall of the guide tube 15 opposite to the gas sensor 17, and the guide plate 18 is inclined toward the side of the gas sensor 17.

[0031] Specifically, when collecting in-hole data, various gases in the hole cavity can be detected, such as oxygen, combustible gases (such as methane, carbon monoxide, etc.), and toxic and harmful gases (such as hydrogen sulfide, carbon dioxide, etc.). By performing gas detection, the in-hole information can be judged in a timely manner and the drilling process can be optimized; Furthermore, the detection of flammable and toxic gases is crucial. For example, flammable gases like methane can explode when exposed to open flames or high temperatures when they reach a certain concentration in the air (explosion limit). Toxic gases like hydrogen sulfide and carbon monoxide can cause serious harm to the human body even at low concentrations, leading to symptoms of poisoning such as difficulty breathing and coma, and even endangering life.

[0032] Furthermore, the distribution of underground radon gas is related to geological structure, rock type, and other factors. In geological exploration, measuring radon gas concentrations in boreholes can be used as an auxiliary tool to help determine underground geological structure and identify potential geological anomalies, such as fault zones and radioactive mineral resources. Detecting high concentrations of VOCs in boreholes may indicate the presence of organic pollutants underground, which is crucial for assessing soil and groundwater contamination.

[0033] like Figure 8 As shown, the bottom surface of the circular shell 3 is fixedly connected to the guide pipe 15 with an annular plate 19, and the bottom surface of the annular plate 19 is detachably connected to a filter screen 20.

[0034] Among them, installing a filter 20 below the inlet fan 16 can block particles or dust impurities in the drill hole when the inlet fan 16 takes in air, preventing dust impurities from adhering to the guide tube 15 and the gas sensor 17, affecting the accuracy of subsequent detection.

[0035] like Figure 8 As shown, a protective plate 21 is fixedly connected to the inner wall of the guide tube 15 near the outer wall of the circular shell 3. The protective plate 21 is arranged at a downward angle. The installation of the protective plate 21 can prevent falling rocks or small particles of impurities from appearing above the circular shell 3 during the data collection process. The protective plate 21 can also block the air outlet of the guide tube 15, directing the airflow downward toward the circular shell 1. When the airflow is blown out, the dust and impurities on the hole wall can also be blown away, which facilitates the clarity of the subsequent image acquisition process of the camera 29. Example 4

[0036] Based on Example 1, this example specifically discloses the imaging acquisition structure of the hole wall: like Figure 1 and Figure 2 As shown, four mounting plates 28 are evenly and fixedly connected to the top surface of the circular shell 3, and a collection camera 29 and a fill light are respectively installed on the side wall of the mounting plate 28 away from the shaft body 1.

[0037] Specifically, the image of the inner wall of the borehole can be collected by the acquisition camera 29, and a three-dimensional model or a plane map can be generated by the control system, as follows: The steps to generate a three-dimensional model are as follows: Calibrate the four acquisition cameras 29 to determine their internal parameters (such as focal length, principal point coordinates, etc.) and external parameters (such as rotation and translation relationships). This can be done by using a dedicated calibration board, capturing images at different angles, and then using computer vision algorithms to calculate these parameters. During the downward feed of the shaft 1, the four acquisition cameras 29 simultaneously capture images of the hole wall. Since the cameras are evenly distributed on the top of the circular shell 3, they will capture images of the hole wall from different angles. Perform feature extraction on the images captured by the four acquisition cameras 29. For example, algorithms such as SIFT (Scale Invariant Feature Transform) and SURF (Speeded Up Robust Features) can be used to extract feature points in the images. Then, a feature matching algorithm is used to find the correspondence between the same feature points in different images. Based on the calibration parameters of the acquisition camera 29 and the matching relationship of the feature points, a 3D reconstruction is performed using triangulation or other methods. By calculating the coordinates of each feature point in 3D space, a 3D model of the hole wall is gradually constructed.

[0038] The steps to generate a floor plan are as follows: Four acquisition cameras 29 simultaneously acquire hole wall images. After acquisition, the images are pre-processed, including grayscale conversion and noise reduction, to improve image quality and facilitate subsequent processing. Use image stitching algorithms, such as those based on feature matching or direct alignment. First, find the overlapping areas between adjacent images, determine the relationships between corresponding points in the overlapping areas through feature matching, and then align and stitch the images based on these corresponding points to form a complete two-dimensional image. The images at the joints may have inconsistencies in color and brightness, requiring fusion processing. Algorithms such as weighted averaging and multi-resolution fusion can be used to make the stitched plane image more natural and smooth overall, eliminating stitching marks and ultimately obtaining a planar image of the drill hole wall. Example 5

[0039] Based on Example 1, in order to prevent the hole wall in the area where the bent plate 5 passes from loosening, this embodiment specifically discloses a compacting component: like Figure 2 、 Figure 5-Figure 6 As shown, the compacting assembly includes a side plate 22 fixedly connected to the top surface of the circular shell 3, and the side walls of the side plate 22 are movably connected to a movable rod 23. The side walls of the side plate 22 are fixedly connected to a limiting cylinder 24, and one end of the movable rod 23 extends into the limiting cylinder 24. The side wall of the movable rod 23 is located in the limiting cylinder 24 and is sleeved with a second spring 26. The other end of the movable rod 23 is connected to a pressure wheel 25.

[0040] Specifically, during the descent of the circular shell 3, the pressure wheels 25 are pressed against the wall of the drill hole by the force of the second spring 26. When the pressure wheels 25 are in the initial state, the diameter formed by the four pressure wheels 25 is larger than the diameter of the circular shell 3. Therefore, when the circular shell 3 is placed in the drill hole, the pressure wheels 25 are all pressed against the wall of the hole, and the second spring 26 is in a stretched state. In addition, the pressing wheel 25 is located above the bent plate 5 and corresponds to the bent plate 5 one by one. When one end of the bent plate 5 passes through the hole wall, if the soil or rock layer on the hole wall is relatively loose and scratches or bulges appear, the pressing wheel 25 can be used to press and tighten this position to ensure the stability and integrity of the hole wall structure. In addition, if the drill bit 2 is in the drilling state, in order to prevent the circular shell 3 from rotating with the shaft body 1, the four pressure wheels 25 are respectively pressed against the hole wall, which can support and limit the circular shell 3 and further improve the stability during the measurement process.

[0041] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A drill rod device capable of sensing working conditions in a hole, comprising a shaft (1), a drill bit (2) and a control system, wherein the drill bit (2) is assembled at the bottom end of the shaft (1), and is characterized in that: The side wall of the shaft body (1) is movably connected to a circular shell (3), and the top surface of the circular shell (3) is evenly provided with at least four through slots (4), and each through slot (4) is provided with a hole wall flatness detection component for detecting the hole wall flatness; The inner wall of the circular shell (3) is fixedly connected with a partition (13), the upper side of the partition (13) is a hole wall detection cavity, and the lower side of the partition (13) is a hole gas detection cavity, and the hole gas detection cavity is provided with a gas detection component for detecting the harmful gas content in the hole; A data transmission module (14) is installed on the top surface of the partition (13), and the data transmission module (14) is wirelessly connected to the control system for transmitting in-hole detection data and receiving instructions; Four compacting components are also provided on the top surface of the circular shell (3).

2. A drill rod device capable of sensing in-hole working conditions according to claim 1, characterized in that: The hole wall flatness detection component includes a bent plate (5) arranged in the through groove (4), the distance between the two bent plates (5) that are away from each other and close to one end of the hole wall is greater than the diameter of the circular shell (3), the side walls of the bent plates (5) are fixedly connected to a rotating shaft (6), the other end of the rotating shaft (6) is rotatably connected to the side wall of the through groove (4), the end of the bent plate (5) away from the circular shell (3) is fixedly connected to a wear-resistant plate (27), and the other end of the bent plate (5) extends into the hole wall detection cavity and is provided with a recording component.

3. The drill rod device capable of sensing in-hole working conditions according to claim 2, characterized in that: The recording component includes a cylinder (7) hinged on the top surface of the inner cavity of the circular shell (3), a round rod (8) is slidably connected in the cylinder (7), the other end of the round rod (8) is hinged to the bent plate (5), the side wall of the round rod (8) is located outside the cylinder (7) and is provided with an elastic member, the inner wall of the cylinder (7) is fixedly connected to a variable resistor (12), and one end of the round rod (8) located in the cylinder (7) is fixedly connected to a conductive block (11), and the conductive block (11) and the variable resistor (12) are electrically offset.

4. The drill rod device capable of sensing in-hole working conditions according to claim 3, characterized in that: The elastic member comprises a baffle (10) fixedly connected to the side wall of the round rod (8); the side wall of the round rod (8) is sleeved with a first spring (9); and the two ends of the first spring (9) are respectively fixedly connected to the cylinder (7) and the baffle (10).

5. The drill rod device capable of sensing in-hole working conditions according to claim 1, characterized in that: The gas detection assembly comprises a flow guide tube (15) fixedly connected to the bottom surface of the inner cavity of the circular shell (3); the flow guide tube (15) is an arc-shaped curved structure; the two ends of the flow guide tube (15) respectively penetrate the bottom surface and the side wall of the circular shell (3); an inlet fan (16) is installed at the bottom surface of the circular shell (3) at the flow guide tube (15); a plurality of gas sensors (17) are installed at the curved portion of the side wall of the flow guide tube (15); a flow guide plate (18) is fixedly connected to the inner wall of the flow guide tube (15) at a position opposite to the gas sensor (17); and the flow guide plate (18) is inclined toward one side of the gas sensor (17).

6. The drill rod device capable of sensing in-hole working conditions according to claim 5, characterized in that: The bottom surface of the circular shell (3) is fixedly connected to an annular plate (19) at the guide pipe (15), and the bottom surface of the annular plate (19) is detachably connected to a filter screen (20).

7. The drill rod device capable of sensing in-hole working conditions according to claim 5, characterized in that: A protective plate (21) is fixedly connected to the inner wall of the guide tube (15) near the outer wall of the circular shell (3), and the protective plate (21) is arranged to be tilted downward.

8. The drill rod device capable of sensing in-hole working conditions according to claim 1, characterized in that: Four mounting plates (28) are evenly and fixedly connected to the top surface of the circular shell (3), and a collection camera (29) and a fill light are respectively installed on the side wall of the mounting plate (28) away from the shaft body (1).

9. The drill rod device capable of sensing in-hole working conditions according to claim 1, characterized in that: The compacting assembly includes a side plate (22) fixedly connected to the top surface of the circular shell (3), the side walls of the side plate (22) are movably connected to a movable rod (23), the side walls of the side plate (22) are fixedly connected to a limiting cylinder (24), one end of the movable rod (23) extends into the limiting cylinder (24), the side wall of the movable rod (23) is located in the limiting cylinder (24) and is sleeved with a second spring (26), and the other end of the movable rod (23) is connected to a pressure wheel (25).

10. A data acquisition method capable of sensing in-hole working conditions, using the drill rod device capable of sensing in-hole working conditions according to any one of claims 1 to 9, characterized in that: The data collection method comprises the following steps: S1: The use state of the circular shell (3) can be during the drilling process, or after the drilling is completed to detect the hole wall; the shaft (1) drives the circular shell (3) to move downward in the drilled hole, and at the same time, the pressure wheel (25) and the bent plate (5) are both against the hole wall, and the bent plate (5) is always kept in a state of being against the hole wall by the force of the first spring (9); S2: When one end of the bent plate (5) encounters a depression on the hole wall, the bent plate (5) is inserted into the depression under the action of the first spring (9), and at the same time, the bent plate (5) moves the other end in the opposite direction through the lever action of the rotating shaft (6), thereby pulling the conductive block (11) to move on the variable resistor (12), causing the resistance value of the variable resistor (12) to change; S3: The data transmission module (14) collects the resistance change data of the variable resistor (12) in real time and sends the data to the control system by wireless means according to the set format and frequency. After the control system receives the detection data sent by the data transmission module (14), it processes the data according to the pre-set parsing method; The received resistance change data is converted into the corresponding hole wall position information and concave degree information. Based on this information, the control system establishes a data buffer in the memory to temporarily store the real-time collected data; S4: The control system generates a curve chart of the hole wall flatness in real time on the control software interface according to the received data and the set time interval or drilling depth interval. The horizontal axis can represent the drilling depth or time, and the vertical axis represents the resistance change of the variable resistor (12) or the corresponding hole wall depression degree, which is used to visually observe the change of the hole wall flatness; S5: At the same time, four acquisition cameras (29) synchronously acquire images of the hole wall. The control system extracts feature points in the image using the SIFT algorithm, uses the feature matching algorithm to find the correspondence between the same feature points in the image, uses the triangulation method to perform three-dimensional reconstruction, and calculates the coordinates of each feature point in the three-dimensional space to construct a three-dimensional model of the hole wall.

Images