A borehole sensor fast winding device for rock burst microseismic detection

Abstract

A borehole sensor quick collecting device for rock burst microseismic detection, comprising a borehole remaining mechanism and a collecting execution mechanism; the borehole remaining mechanism is used for installing and fixing the sensor, and the sensor is fixedly connected with the hole wall of the surrounding rock drilling hole through the borehole remaining mechanism; the collecting execution mechanism is in transmission cooperation with the borehole remaining mechanism, and the action execution driving force of the borehole remaining mechanism is provided by the collecting execution mechanism; the borehole remaining mechanism comprises a remaining frame and a hole wall jacking assembly; and the collecting execution mechanism comprises a handheld frame and a power driving assembly.The present application discards the traditional way of fixing the sensor in the surrounding rock drilling hole by using solidified coupling agent, realizes the coupling and fixing between the sensor and the surrounding rock drilling hole through a mechanical structure, the sensor can realize quick arrangement and recovery, has better adaptability to the uneven hole wall, and can accurately control the accuracy of the installation direction for the sensor, such as a three-component sensor, which has special requirements on the installation direction.

Description

Technical Field

[0001] This invention belongs to the field of geotechnical engineering technology, and in particular relates to a rapid deployment and retraction device for in-hole sensors used for rockburst micro-vibration detection. Background Technology

[0002] With the advancement of technology and economic development, people are paying increasing attention to events or potential hazards that affect public safety. More and more monitoring methods and means are being used for real-time monitoring of key areas or areas with potential hazards to ensure the timeliness of disaster analysis and investigation in these areas.

[0003] To obtain more accurate analysis results, sensors need to be deployed according to specifications and requirements. To ensure the accuracy of the signals acquired by the sensors, they need to be coupled to the surrounding environment. In the field of acoustics, acoustic emission sensors typically use a paste-like coupling agent to couple with the surrounding environment. In the field of seismic exploration, sensors typically use modeling clay or similar plastic clay as a coupling agent to couple with a cement surface to improve signal quality.

[0004] However, in underground engineering monitoring, to obtain high-quality signals, sensors are typically buried in boreholes in the surrounding rock, and cement-based curing coupling agents are used to fix the sensors in place. When long-term or permanent monitoring is required, the monitoring cost using this sensor deployment method is acceptable. However, for mobile monitoring where sensors are relatively expensive, sensor recovery is extremely difficult. While replacing cement-based curing coupling agents with materials like putty could reduce the difficulty of sensor recovery, fissure water in underground engineering can reduce the applicability of these coupling agents, thus affecting the stability of the sensor installation in the borehole.

[0005] In addition, when embedding sensors in boreholes in surrounding rock, uneven borehole walls are often encountered, which makes it difficult to effectively support the sensors during installation due to the lack of anchor points or insufficient friction of the borehole walls. This results in low sensor installation efficiency. For sensors such as three-component sensors that have special requirements for installation direction, it is also difficult to accurately control the accuracy of their installation direction. Summary of the Invention

[0006] To address the problems existing in the prior art, this invention provides a rapid deployment and retrieval device for borehole sensors used in rockburst microvibration detection. It abandons the traditional method of fixing the sensor in the surrounding rock borehole using a curing coupling agent. Instead, it achieves coupling and fixation between the sensor and the surrounding rock borehole through a mechanical structure. The sensor can be quickly deployed and retrieved, and it has better adaptability to uneven borehole walls. For sensors such as three-component sensors that have special requirements for installation direction, it can accurately control the precision of their installation direction.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a rapid deployment and retraction device for borehole sensors used in rockburst microvibration detection, comprising a borehole retention mechanism and a deployment and retraction execution mechanism; the borehole retention mechanism is used to install and fix the sensor, and the sensor is fixedly connected to the borehole wall of the surrounding rock borehole through the borehole retention mechanism; the deployment and retraction execution mechanism is connected and driven by the borehole retention mechanism, and the driving force for the action of the borehole retention mechanism is provided by the deployment and retraction execution mechanism.

[0008] The in-hole retention mechanism includes a retention frame and a borehole wall support assembly; the borehole wall support assembly is mounted on the retention frame, and the retention frame is fixedly connected to the borehole wall of the surrounding rock borehole through the borehole wall support assembly; the inside of the retention frame is used to fix and install sensors.

[0009] The retention frame includes a base plate, support rods, and a top plate; both the base plate and the top plate adopt a disc-shaped structure; there are at least two support rods, which are distributed in parallel and fixedly connected between the base plate and the top plate, and are evenly distributed in the circumferential direction; a sensor mounting bracket is fixed on the support rod near the base plate.

[0010] The borehole wall support assembly includes a support plate, a folding telescopic frame, a sliding plate, a screw, a worm gear, and a worm. The sliding plate has a disc-shaped structure and is located between the bottom plate and the top plate. A limiting groove is provided on the edge of the sliding plate to cooperate with the sliding of the support rod. One end of the folding telescopic frame is hinged to the bottom plate, and the other end is hinged to the sliding plate. The support plate is hinged to the folding telescopic frame. There are three folding telescopic frames, which are evenly distributed in the circumferential direction. The screw is parallel to the support rod. One end of the screw is fixedly connected to the center of the sliding plate, and the other end is a free end facing the top plate. A threaded hole is provided in the center of the worm gear, and the worm gear is screwed onto the screw through the central threaded hole. The worm is parallel to the screw. One end of the worm is rotatably connected to the top plate through a bearing, and the other end is a free end facing the sliding plate. The worm meshes with the worm gear.

[0011] The fabric take-up actuator includes a handheld frame and a power drive assembly; the power drive assembly is mounted on the handheld frame, and the rotational driving force of the worm gear in the hole wall support assembly is provided by the power drive assembly.

[0012] The handheld frame includes a handle and a docking frame; the docking frame adopts a cylindrical cage structure, with a magnetic docking plug at the front end of the docking frame and magnetic docking holes on the top surface of the retaining frame. The number of magnetic docking holes and magnetic docking plugs are the same and their positions correspond one-to-one. The magnetic docking holes and magnetic docking plugs are plugged in and engaged; the handle is fixedly installed at the rear end of the docking frame.

[0013] The power drive assembly includes a drive motor and a transmission shaft; the drive motor is fixedly installed inside the docking frame, and a control button for the drive motor is provided on the handle. A battery that provides power to the drive motor is installed inside the handle; the motor shaft of the drive motor is coaxially and fixedly connected to one end of the transmission shaft, and the other end of the transmission shaft is connected to the worm gear through a quick-connect coupling.

[0014] The beneficial effects of this invention are:

[0015] The present invention provides a rapid deployment and retrieval device for borehole sensors used for rockburst microvibration detection. This device abandons the traditional method of fixing sensors in the surrounding rock borehole using a curing coupling agent. Instead, it achieves coupling and fixation between the sensor and the surrounding rock borehole through a mechanical structure. The sensor can be quickly deployed and retrieved, and it has better adaptability to uneven borehole walls. For sensors such as three-component sensors that have special requirements for installation direction, it can accurately control the precision of their installation direction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a rapid deployment device for an in-hole sensor used for rockburst microvibration detection according to the present invention.

[0017] Figure 2 for Figure 1 Sectional view of AA;

[0018] In the diagram, 1—surrounding rock borehole, 2—bottom plate, 3—support rod, 4—top plate, 5—sensor mounting bracket, 6—top support plate, 7—folding telescopic frame, 8—slide plate, 9—screw, 10—worm gear, 11—worm, 12—limiting groove, 13—handle, 14—connection frame, 15—magnetic connection plug, 16—magnetic connection socket, 17—drive motor, 18—drive shaft, 19—control button, 20—quick-change connector. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1 , 2 As shown, a rapid deployment and retrieval device for borehole sensors used in rockburst microvibration detection includes a borehole retention mechanism and a deployment and retrieval execution mechanism. The borehole retention mechanism is used to install and fix the sensor, and the sensor is fixedly connected to the borehole wall of the surrounding rock borehole 1 through the borehole retention mechanism. The deployment and retrieval execution mechanism is connected and driven by the borehole retention mechanism, and the driving force for the movement of the borehole retention mechanism is provided by the deployment and retrieval execution mechanism.

[0021] The in-hole retention mechanism includes a retention frame and a borehole wall support assembly; the borehole wall support assembly is mounted on the retention frame, and the retention frame is fixedly connected to the borehole wall of the surrounding rock borehole 1 through the borehole wall support assembly; the inside of the retention frame is used to fix and install sensors.

[0022] The retention frame includes a base plate 2, support rods 3 and a top plate 4; both the base plate 2 and the top plate 4 adopt a disc-shaped structure; there are at least two support rods 3, and multiple support rods 3 are distributed in parallel and fixedly connected between the base plate 2 and the top plate 4, and the multiple support rods 3 are evenly distributed in the circumferential direction; a sensor mounting bracket 5 is fixed on the support rod 3 near the base plate 2.

[0023] The borehole wall support assembly includes a support plate 6, a folding telescopic frame 7, a sliding plate 8, a screw 9, a worm gear 10, and a worm 11. The sliding plate 8 has a disc-shaped structure and is located between the bottom plate 2 and the top plate 4. A limiting groove 12 is provided on the edge of the sliding plate 8 to slide and cooperate with the support rod 3. One end of the folding telescopic frame 7 is hinged to the bottom plate 2, and the other end of the folding telescopic frame 7 is hinged to the sliding plate 8. The support plate 6 is hinged to the folding telescopic frame 7. There are three folding telescopic frames 7. The screws are evenly distributed in the circumferential direction; the screw 9 is parallel to the support rod 3, one end of the screw 9 is fixedly connected to the center of the slide plate 8, and the other end of the screw 9 is a free end facing the top plate 4; a threaded hole is opened in the center of the worm gear 10, and the worm gear 10 is screwed onto the screw 9 through the central threaded hole; the worm 11 is parallel to the screw 9, one end of the worm 11 is rotatably connected to the top plate 4 through a bearing, and the other end of the worm 11 is a free end facing the slide plate 8, and the worm 11 meshes with the worm gear 10.

[0024] The fabric retraction actuator includes a handheld frame and a power drive assembly; the power drive assembly is mounted on the handheld frame, and the rotational driving force of the worm gear 11 in the hole wall support assembly is provided by the power drive assembly.

[0025] The handheld frame includes a handle 13 and a docking frame 14. The docking frame 14 adopts a cylindrical cage structure. A magnetic docking plug 15 is provided at the front end of the docking frame 14. A magnetic docking insertion hole 16 is provided on the surface of the top plate 4 of the retaining frame. The number of magnetic docking insertion holes 16 and magnetic docking plugs 15 are the same and their positions correspond one-to-one. The magnetic docking insertion holes 16 and magnetic docking plugs 15 are plugged in and engaged. The handle 13 is fixedly installed at the rear end of the docking frame 14.

[0026] The power drive assembly includes a drive motor 17 and a transmission shaft 18. The drive motor 17 is fixedly installed inside the docking frame 14. A control button 19 for the drive motor 17 is provided on the handle 13. A battery that provides power to the drive motor 17 is provided inside the handle 13. The motor shaft of the drive motor 17 is coaxially and fixedly connected to one end of the transmission shaft 18. The other end of the transmission shaft 18 is connected to the worm gear 11 through a quick-change connector 20.

[0027] The following describes a single use of the present invention with reference to the accompanying drawings:

[0028] First, the sensor is fixedly installed on the sensor mounting bracket 5 in the surrounding rock borehole 1. Then, the in-hole retention mechanism is connected with the cloth take-up execution mechanism. During the connection, the magnetic docking plug 15 at the front end of the docking bracket 14 is inserted into the magnetic docking socket 16 on the surface of the top plate 4. At the same time, the drive shaft 18 is connected to the worm gear 11 through the quick-change connector 20.

[0029] After the in-hole retention mechanism is connected with the receiving execution mechanism, the in-hole retention mechanism is aligned with the surrounding rock borehole 1, and then the in-hole retention mechanism is sent into the surrounding rock borehole 1 until the bottom plate 2 is against the bottom of the hole.

[0030] After the in-hole placement mechanism is inserted, press the control button 19 on the handle 13 to start the drive motor 17. The drive motor 17 drives the quick-change connector 20 to rotate through the transmission shaft 18, which in turn drives the worm gear 11 to rotate. Since the worm gear 11 meshes with the worm wheel 10, it will drive the worm wheel 10 to rotate. At this time, the rotational motion of the worm wheel 10 will be synchronously converted into the linear movement of the screw 9. As the screw 9 moves linearly, it will drive the slide plate 8 to move along the support rod 3 towards the bottom of the hole, thereby reducing the distance between the slide plate 8 and the bottom plate 2. The folding telescopic frame 7 is compressed, causing the top support plate 6 to move towards the hole wall until the top support plate 6 is pressed against the hole wall.

[0031] After the top support plate 6 has tightened against the borehole wall, the in-hole retention mechanism is fixedly connected to the borehole wall of the surrounding rock borehole 1. Then, hold the handle 13 and pull the cloth-retracting actuator backward. The magnetic docking plug 15 at the front end of the docking frame 14 will smoothly disengage from the magnetic docking socket 16 on the surface of the top plate 4. At the same time, the quick-change connector 20 on the drive shaft 18 will also smoothly separate from the worm gear 11. After the cloth-retracting actuator is moved out of the surrounding rock borehole 1, the rapid deployment of the sensor is completed.

[0032] When the detection task is completed and the sensor needs to be retrieved, first insert the fabric retrieval actuator into the surrounding rock borehole 1, so that the fabric retrieval actuator and the in-hole retention mechanism are docked in the surrounding rock borehole 1. After docking, press the control button 19 on the handle 13 to control the drive motor 17 to start in reverse. The drive motor 17 drives the quick-change connector 20 to rotate in reverse through the transmission shaft 18, which in turn drives the worm gear 11 to rotate in reverse. Through the meshing transmission between the worm gear 11 and the worm wheel 10, the worm wheel 10 is driven to rotate in reverse. At this time, the rotational motion of the worm wheel 10 will be synchronously converted into the linear movement of the screw 9. As the screw 9 moves in a straight line, it will drive the slide plate 8 to move along the support rod 3 towards the borehole opening, thereby increasing the distance between the slide plate 8 and the bottom plate 2. The folding telescopic frame 7 is stretched, causing the top support plate 6 to move away from the borehole wall until the top support plate 6 is completely detached from the borehole wall.

[0033] Once the top support plate 6 disengages from the borehole wall, the fixed connection between the in-hole retention mechanism and the borehole wall 1 is released. Then, by holding the handle 13 and pulling the cloth retraction mechanism backward, the in-hole retention mechanism will be pulled out of the borehole 1 by the magnetic attraction between the magnetic docking plug 15 and the magnetic docking socket 16. Finally, the sensor is removed from the sensor mounting bracket 5 outside the borehole 1, and the rapid retrieval of the sensor is completed.

[0034] Furthermore, for sensors such as three-component sensors that have special requirements for installation direction, when installing the three-component sensor on the sensor mounting bracket 5, it is only necessary to align the N end of the three-component sensor with the worm gear 11. In this way, when the mechanism is placed in the mounting hole, the accurate direction of the three-component sensor can be accurately determined by observing the position of the exposed transmission shaft 18.

[0035] The solutions described in the embodiments are not intended to limit the scope of patent protection of this invention. All equivalent implementations or modifications that do not depart from the scope of this invention are included in the patent scope of this case.

Claims

1. A rapid deployment and retraction device for in-hole sensors used in rockburst microvibration detection, characterized in that: It includes an in-hole retention mechanism and a take-up execution mechanism; the in-hole retention mechanism is used to install and fix the sensor, and the sensor is fixedly connected to the borehole wall of the surrounding rock through the in-hole retention mechanism; the take-up execution mechanism is connected and driven by the in-hole retention mechanism, and the driving force for the action of the in-hole retention mechanism is provided by the take-up execution mechanism; The in-hole placement mechanism includes a placement frame and a borehole wall support assembly; the borehole wall support assembly is mounted on the placement frame, and the placement frame is fixedly connected to the borehole wall of the surrounding rock borehole through the borehole wall support assembly; the interior of the placement frame is used to fix and install sensors. The borehole wall support assembly includes a support plate, a folding telescopic frame, a sliding plate, a screw, a worm gear, and a worm. The sliding plate has a disc-shaped structure and is located between the bottom plate and the top plate. A limiting groove is provided on the edge of the sliding plate to cooperate with the sliding of the support rod. One end of the folding telescopic frame is hinged to the bottom plate, and the other end is hinged to the sliding plate. The support plate is hinged to the folding telescopic frame. There are three folding telescopic frames, which are evenly distributed in the circumferential direction. The screw is parallel to the support rod. One end of the screw is fixedly connected to the center of the sliding plate, and the other end is a free end facing the top plate. A threaded hole is provided in the center of the worm gear, and the worm gear is screwed onto the screw through the central threaded hole. The worm is parallel to the screw. One end of the worm is rotatably connected to the top plate through a bearing, and the other end is a free end facing the sliding plate. The worm meshes with the worm gear. The fabric take-up actuator includes a handheld frame and a power drive assembly; the power drive assembly is mounted on the handheld frame, and the rotational driving force of the worm gear in the hole wall support assembly is provided by the power drive assembly; The handheld frame includes a handle and a docking frame; the docking frame adopts a cylindrical cage structure, with a magnetic docking plug at the front end of the docking frame and magnetic docking holes on the top surface of the retaining frame. The number of magnetic docking holes and magnetic docking plugs are the same and their positions correspond one-to-one. The magnetic docking holes and magnetic docking plugs are plugged in and engaged; the handle is fixedly installed at the rear end of the docking frame.

2. The rapid deployment and retraction device for in-hole sensors used for rockburst microvibration detection according to claim 1, characterized in that: The retention frame includes a base plate, support rods, and a top plate; both the base plate and the top plate adopt a disc-shaped structure; there are at least two support rods, which are distributed in parallel and fixedly connected between the base plate and the top plate, and are evenly distributed in the circumferential direction; a sensor mounting bracket is fixed on the support rod near the base plate.

3. The rapid deployment and retraction device for in-hole sensors used in rockburst microseismic detection according to claim 1, characterized in that: The power drive assembly includes a drive motor and a transmission shaft; the drive motor is fixedly installed inside the docking frame, a control button for the drive motor is provided on the handle, and a battery that provides power to the drive motor is provided inside the handle; The motor shaft of the drive motor is coaxially and fixedly connected to one end of the transmission shaft, and the other end of the transmission shaft is connected to the worm gear through a quick-connect coupling.

4. A rapid deployment and retraction device for in-hole sensors used for rockburst microvibration detection according to claim 2, characterized in that: When installing a three-component sensor on the sensor mounting bracket, the N-end of the three-component sensor is aligned with the worm gear. The accurate orientation of the three-component sensor is determined by observing the orientation of the exposed drive shaft.

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