Intelligent micro-seismic monitoring device for mining underground metal mine and monitoring method of intelligent micro-seismic monitoring device

Abstract

The invention discloses an intelligent micro-seismic monitoring device for underground metal mining, which comprises a seismic geophone, a main shaft and a splicing shaft, and is characterized in that the seismic geophone is the main body of the monitoring device, and the seismic geophone is composed of a shell, a displacement sensor and a threaded rod; a displacement sensor is integrated in a shell of the seismometer and used for monitoring vibration, and one end of the shell of the seismometer is fixedly connected with a threaded rod. The main shaft is a carrier for installing the geophone, and the main shaft is spliced with a groove at one end of the splicing shaft through a convex block at one end. The invention further discloses an intelligent micro-seismic monitoring method for underground metal mine mining. The seismometer is provided with the indicator lamp and the buzzer, when micro-seismic activity is detected, visual and auditory warnings can be given out in time, workers in an underground metal mine mining mine are reminded to pay attention to potential dangers and evacuate rapidly in time, and the safety of the working environment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground metal mine safety monitoring, and in particular to an intelligent microseismic monitoring device and a monitoring method for underground metal mine mining. Background Art

[0002] As demand for underground metal ore resources grows, underground mining is gradually moving deeper, bringing many new challenges, particularly safety. During underground mining, stress changes in rock formations can cause fractures, generating tiny earthquakes (microseismic events). If these microseismic events are not monitored and analyzed promptly, they can lead to serious safety incidents such as landslides or water inrush. Therefore, developing effective monitoring technologies to predict and prevent various risks during underground mining is crucial.

[0003] Existing microseismic monitoring systems typically consist of a central substation and multiple sensors distributed around it. These components are connected by cables to transmit signals. However, in practical applications, this approach has some inconveniences. For example, when installing in complex environments such as tunnels or underground metal mines, workers need to manually arrange each sensor in place, which is not only time-consuming and labor-intensive, but also exposes cables to damage, increasing maintenance costs and safety hazards. In addition, once the computer analyzes the microseismic signal indicating potential danger, the existing system has difficulty in quickly and intuitively notifying on-site workers to evacuate the dangerous area, which poses a challenge to ensuring the safety of miners. The system still has room for improvement in terms of convenience and safety. Therefore, we propose an intelligent microseismic monitoring device and monitoring method for underground metal mining to overcome the above-mentioned shortcomings. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides an intelligent microseismic monitoring device and a monitoring method for underground metal mine development.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An intelligent microseismic monitoring device for underground metal mine mining includes a vibration pickup, a main shaft and a splicing shaft, the vibration pickup consists of a shell, a displacement sensor and a threaded rod, the displacement sensor is integrated inside the shell of the vibration pickup, the displacement sensor is used to monitor vibration, one end of the shell of the vibration pickup is fixed to the threaded rod, the main shaft is spliced ​​with a protrusion at one end and a groove at one end of the front splicing shaft, the groove end of the splicing shaft is symmetrically slidably connected to the first clamping ball, the first clamping ball is provided with a first spring at the embedded groove, the protruding end of the main shaft is provided with a clamping hole 1 adapted for the first clamping ball, the first clamping balls on both sides of the groove of the front splicing shaft are clamped into the clamping hole 1 of the protrusion at one end of the main shaft, the two adjacent splicing shafts are spliced ​​with the protrusion of the front splicing shaft and the groove of the rear splicing shaft, and the first clamping balls on both sides of the groove of the rear splicing shaft are clamped into the adjacent front splicing shaft The locking piece of the mounting block is provided with a threaded groove adapted to fit the threaded rod, and the end of the threaded rod away from the outer shell is connected to the threaded groove, and the locking piece is provided on the mounting block for locking the rotating shaft fixed to the mounting block, and the end of the main shaft away from the splicing shaft is provided with a drilling assembly for drilling into the rock formation.

[0007] Furthermore, the locking member includes a chuck, a fixing ring and a clamping rod. The chucks are symmetrically fixedly connected to the left and right outer walls of the docking block. The chuck body is provided with a plurality of clamping grooves at circumferential intervals. The outer ends of the rotating shafts fixedly connected on the left and right sides of the mounting block are fixedly connected with fixing rings. The fixing rings are located on the outside of the chucks on the same side. A clamping rod is slidably installed on the fixing rings. The clamping rod is used to be clamped into the clamping groove of the chuck on the same side and lock the rotating mounting block.

[0008] Furthermore, an indicator light is mounted on the outer shell of the vibration pickup at one end facing away from the threaded rod, and a transparent cover is provided on the outer shell for protecting the indicator light. The indicator light is electrically connected to a displacement sensor in the outer shell, and the indicator light is used for normal lighting or micro-earthquake warning in the mine. A buzzer is mounted in the outer shell, and the buzzer is also electrically connected to the displacement sensor in the outer shell, and the buzzer is used to sound an alarm in advance when a micro-earthquake occurs in the mine, and the displacement sensor has a built-in controller for controlling the indicator light and the buzzer.

[0009] Furthermore, the drilling assembly includes a mounting plate, a first motor, a drive plate and a drill bit. The mounting plate is fixedly connected to the end of the main shaft away from the splicing shaft, the first motor is fixedly installed on the mounting plate, the drive plate is fixedly connected to the output shaft of the first motor, the drill bit is rotatably installed on the shaft body of the main shaft away from the docking shaft, the drive plate and the inner wall of the drill bit are fixedly connected, and power supply interfaces are provided on the shaft bodies of the main shaft and the splicing shaft, and the power supply interface is used to connect the power supply line and power the working first motor.

[0010] Furthermore, the surface of the drill bit is provided with a spiral groove for discharging debris, a cavity for docking the main shaft is opened inside the drill bit, and a circle of guide grooves is provided on the outer periphery of the shaft body of the main shaft near one end of the drill bit. The guide grooves of the main shaft and the convex ring inside the drill bit rotate in coordination, thereby improving the stability of the rotation of the drill bit driven by the first motor.

[0011] Furthermore, a reinforcement component is provided on the main shaft, and the reinforcement component includes a sliding sleeve, an assembly plate and a drilling anchor rod. The sliding sleeve is slidably installed on the outside of the main shaft shaft body. The main shaft and the splicing shaft have the same outer diameter. After the sliding sleeve is moved onto the splicing shaft, it slides and cooperates with the splicing shaft. The sliding sleeve is fixedly connected to the assembly plate, and the drilling anchor rod is threadedly connected to the assembly plate. The drilling anchor rod is parallel to the axis of the drill bit, and the end of the drilling anchor rod facing the drill bit is a pointed end. The drilling anchor rod is used to drill into the monitored rock formation.

[0012] Furthermore, a ring is detachably mounted on one end of the threaded groove on the mounting block, and fixed pulleys are symmetrically fixedly mounted on the left and right ends of the ring. A second motor is symmetrically fixedly mounted on the left and right ends of the assembly plate, and a driving wheel is fixedly mounted on the output shaft of the second motor. The left and right sides of the assembly plate are rotatably connected to driven wheels, and a pull rope is wound around the driving wheel, one end of the pull rope is fixedly connected to the driving wheel, and the other end of the pull rope is connected to the driven wheel after passing around the fixed pulley on the same side.

[0013] An intelligent microseismic monitoring method for underground metal mining, which uses the above-mentioned intelligent microseismic monitoring device for underground metal mining, comprises the following steps:

[0014] S1. Select an appropriate number of splicing shafts based on the required monitoring depth and connect them to the main shaft to ensure stability. Secure the vibration pickup to the docking piece of the last splicing shaft using a threaded rod and adjust it to the appropriate angle. Use the drilling assembly to drill into the underground metal ore rock formation at the predetermined location and secure the entire device to the rock wall using drill anchors.

[0015] S2. Activate the displacement sensor to continuously monitor the vibration of the rock formations surrounding the underground metal mine. When any microseismic activity is detected, the displacement sensor immediately triggers the built-in controller to flash the indicator light and sound the buzzer, immediately alerting the personnel in the mine to potential dangers.

[0016] S3. Once a vibration alarm occurs, the monitoring device not only warns on-site personnel through visual and auditory means, but also sends alarm information to the monitoring center to ensure that timely measures are taken to protect personnel safety and reduce accident risks.

[0017] Compared with the prior art, the present invention has the following technical effects:

[0018] 1. The vibration pickup of the present invention is equipped with an indicator light and a buzzer. When microseismic activity is detected, it can immediately issue visual and auditory warnings to remind the workers inside the mine to pay attention to potential dangers and evacuate quickly, thereby improving the safety of the working environment.

[0019] 2. Through the design of the main shaft and the splicing shaft, the present invention can flexibly adjust the length of the monitoring device as needed, making it convenient to install it in rock formations of different depths. The modular design makes the extension and assembly process more convenient.

[0020] 3. The present invention can also ensure that the monitoring device maintains an accurate angle during the drilling process and is firmly fixed to the rock wall of the underground metal mine through the design of the drilling component and the reinforcement component, thereby improving the accuracy of the drilling and the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 This is a diagram showing the connection relationship among the vibration pickup, main shaft, splicing shaft and docking parts of the present invention.

[0023] Figure 3 This is an exploded view of the vibration pickup, splicing shaft, docking block and mounting block of the present invention.

[0024] Figure 4 It is a cross-sectional view of the vibration pickup and the docking block of the present invention.

[0025] Figure 5 It is a schematic diagram of the splicing shaft, the first clamping ball and the first spring of the present invention.

[0026] Figure 6 This is a diagram showing the coordination of the spindle, first motor, drive plate, drill bit and other components of the present invention.

[0027] Figure 7 This is a diagram showing the connection relationship between the assembly plate, drilling anchor rod, collar, and pull rope components of the present invention.

[0028] Figure 8 This is a diagram showing the connection relationship between the rotating shaft, mounting block, collar and fixed pulley of the present invention.

[0029] Figure 9 Schematic diagram of the assembly plate, second motor, driving wheel and driven wheel of the present invention.

[0030] Parts names and serial numbers in the figure: 1-vibration pickup, 101-housing, 102-displacement sensor, 103-threaded rod, 104-indicator light, 105-transparent cover, 106-buzzer, 2-spindle, 3-joining shaft, 31-first card ball, 32-first spring, 33-card hole 1, 4-docking piece, 41-docking block, 42-rotating shaft, 43-mounting block, 51-second card ball, 52-second spring, 53-card Hole 2, 6-locking piece, 61-chuck, 62-fixing ring, 63-clamping rod, 7-drilling assembly, 71-mounting plate, 72-first motor, 73-drive plate, 74-drill bit, 741-guide groove, 8-power supply interface, 9-reinforcement assembly, 91-sleeve, 92-assembly plate, 93-drilling anchor rod, 10-ring, 11-fixed pulley, 12-second motor, 13-drive wheel, 14-driven wheel, 15-pull rope. DETAILED DESCRIPTION

[0031] The present invention is described in detail below with reference to the embodiments and accompanying drawings.

[0032] The front end in this embodiment is the end pointing to the rock formation, and the rear end is the end away from the rock formation.

[0033] Example 1: An intelligent microseismic monitoring device for underground metal mining, such as Figure 1-Figure 5As shown, it includes a vibration pickup 1, a main shaft 2, a splicing shaft 3 and a drilling assembly 7. The vibration pickup 1 is the main body of the monitoring device. The vibration pickup 1 is composed of a shell 101, a displacement sensor 102 and a threaded rod 103. The displacement sensor 102 is integrated inside the shell 101 of the vibration pickup 1. The displacement sensor 102 is used to monitor vibration. One end of the shell 101 of the vibration pickup 1 is fixedly connected to the threaded rod 103. The main shaft 2 is a carrier for mounting the vibration pickup 1. The main shaft 2 is connected to the groove at one end of the front splicing shaft 3 by a protrusion at one end. The groove end of the splicing shaft 3 is embedded with a first clamping ball 31 that is symmetrically slidably connected to the left and right. The embedded groove of the first clamping ball 31 is provided with a first spring 32. The first spring 32 in the embedded groove applies pressure to the first clamping ball 31 in the embedded groove toward one side of the middle of the groove. The protruding end of the main shaft 2 is provided with a clamping hole 33 that adapts to the first clamping ball 31. The first clamping balls 31 on both sides of the groove of the front splicing shaft 3 are clamped into the clamping hole 33 of the protrusion at one end of the main shaft 2. Multiple splicing shafts 3 can be modularly spliced ​​end to end through the protrusions and grooves at both ends. That is, two adjacent splicing shafts 3 are spliced ​​through the protrusion of the front splicing shaft 3 and the groove of the back splicing shaft 3. The first clamping balls 31 on the left and right sides of the groove of the back splicing shaft 3 are clamped into the clamping hole 33 of the protrusion of the adjacent front splicing shaft 3. The groove end of the last splicing shaft 3 is provided with a docking piece 4 for assembling the shock absorber 1. The docking piece 4 includes a docking block 41, a rotating shaft 42, and a mounting block 43. One end of the docking block 41 is provided with a groove for docking with the protruding end of the last splicing shaft 3. The groove end of the docking block 41 is embedded with a second clamping ball 51 that is symmetrically slidably connected to the left and right. The second clamping ball 51 is provided with a second spring 52 at the embedded groove. The second spring 52 in the embedded groove of the docking block 41 applies pressure to the second clamping ball 51 in the embedded groove toward the middle of the groove. The protruding end of the last splicing shaft 3 is provided with a second clamping hole 53 that adapts to the second clamping ball 51. Under the action of the second spring 52, the second clamping ball 51 is clamped into the second clamping hole 53. The docking block 41 is rotatably connected to the mounting block 43 via the rotating shaft 42. The mounting block 43 is provided with a threaded groove that adapts to the threaded rod 103 on the housing 101. The end of the threaded rod 103 away from the housing 101 is connected to the threaded groove by threaded engagement. A locking piece 6 is provided on the docking block 41 for locking the rotating shaft 42 fixed on the mounting block 43. A drilling assembly 7 for drilling into the rock formation is provided at the end of the main shaft 2 away from the splicing shaft 3. The drilling assembly 7 on the main shaft 2 is operated manually or with tools to drill into the rock formation for microseismic monitoring. The splicing shaft 3 is connected and spliced ​​to the main shaft 2 for convenient extension, so that the entire monitoring device can be extended into the rock formation at different depths. The docking piece 4 is then spliced ​​onto the last splicing shaft 3, and the vibration pickup 1 is screwed into the threaded groove assembled to the mounting block 43, so that the entire microseismic monitoring device can be conveniently and flexibly installed in the rock formation to be monitored, reducing the maintenance cost and safety hazards of the device.

[0034] like Figure 3 and Figure 4As shown, the locking member 6 includes a chuck 61, a fixing ring 62 and a clamping rod 63. The chucks 61 are symmetrically fixedly connected to the outer walls of the left and right sides of the docking block 41. The chuck 61 has a plurality of clamping grooves spaced circumferentially on the disk body. The outer ends of the rotating shafts 42 on the left and right sides of the mounting block 43 are fixedly connected with fixing rings 62. The fixing rings 62 are located on the outside of the chuck 61 on the same side. A clamping rod 63 is slidably installed on the fixing ring 62. The clamping rod 63 is used to be clamped into the clamping groove of the chuck 61 on the same side and lock the rotating mounting block 43, so that the vibration pickup 1 assembled on the mounting block 43 can be rotated to adjust the installation angle.

[0035] like Figure 1 and Figure 4 As shown, an indicator light 104 is mounted on the housing 101 at one end of the vibration pickup 1 away from the threaded rod 103. A transparent cover 105 is provided on the housing 101 for protecting the indicator light 104. The indicator light 104 is electrically connected to the displacement sensor 102 in the housing 101. The indicator light 104 is used for normal lighting or micro-seismic warning in the mine. A buzzer 106 is mounted in the housing 101. The buzzer 106 is also electrically connected to the displacement sensor 102 in the housing 101. The buzzer 106 is used to sound an alarm in advance when a micro-seismic warning occurs in the mine. 02 has a built-in controller for controlling the indicator light 104 and the buzzer 106. When the displacement sensor 102 does not detect any micro-seismic conditions near the mine, the indicator light 104 will light up normally at the assembly site of the mine. When the displacement sensor 102 of the vibration pickup 1 detects any micro-seismic conditions near the mine, the displacement sensor 102 controls the indicator light 104 through the controller to flash as a warning at the assembly site of the mine, and at the same time instructs the buzzer 106 to sound an alarm, thereby promptly reminding the personnel inside the mine to evacuate the mine as soon as possible before a vibration alarm occurs.

[0036] like Figure 2 and Figure 6 As shown, the drilling assembly 7 includes a mounting plate 71, a first motor 72, a drive plate 73 and a drill bit 74. The end of the main shaft 2 away from the splicing shaft 3 is fixedly connected to the mounting plate 71, and the first motor 72 is fixedly installed on the mounting plate 71. The output shaft of the first motor 72 is fixedly connected to the drive plate 73. The drill bit 74 is rotatably installed on the shaft body of the main shaft 2 away from the splicing shaft 3. The inner wall of the drive plate 73 and the drill bit 74 are fixedly connected. The shaft bodies of the main shaft 2 and the splicing shaft 3 are both provided with power supply interfaces 8. The power supply interface 8 is used to connect the power line and power the working first motor 72. According to the actual number of splicing shafts 3 on the main shaft 2, power is connected at the power supply interface 8 of the last splicing shaft 3 outside the rock formation, so that the first motor 72 can drive the drill bit 74 to drill a hole in the rock formation through the drive plate 73, so that the entire monitoring device can be quickly assembled to the monitoring location.

[0037] like Figure 1 and Figure 2As shown, the surface of the drill bit 74 is provided with a spiral groove for discharging debris, and a cavity for docking with the main shaft 2 is provided inside the drill bit 74. A circle of guide grooves 741 is provided on the outer periphery of the shaft body of the main shaft 2 near one end of the drill bit 74. The drill bit 74 is rotated in cooperation with the guide groove 741 of the main shaft 2 through the convex ring inside the drill bit 74, thereby improving the stability of the rotation of the drill bit 74 driven by the first motor 72.

[0038] When using this monitoring device for microseismic monitoring in underground metal mining, it is necessary to first install the seismic pickup 1 on the rock wall of the mine to be monitored, wherein the main shaft 2 serves as the main supporting structure of the device, and the rear end of the main shaft 2 is quickly spliced ​​with the groove of the previous splicing shaft 3 through the protrusion. When splicing, the two first card balls 31 inside the previous splicing shaft 3 automatically pop out under the elastic force of the first spring 32, and are accurately snapped into the card hole 33 on the protrusion of the main shaft 2 to form a stable mechanical connection. Then, multiple splicing shafts 3 can be connected end to end in the same way, and the length of the monitoring device can be flexibly extended through modular splicing, so that the supporting body of the entire monitoring device can penetrate into the mine rock layer of different depths. When drilling operations are carried out, the construction personnel first The power supply interface 8 is connected to the power line and the entire monitoring device is powered. Then, the drill bit 74 on the main shaft 2 after the spliced ​​shaft 3 is spliced ​​is operated by using a tool to make it close to the rock wall of the underground metal mine. Then the first motor 72 is activated. The first motor 72 drives the drill bit 74 to rotate through the drive plate 73. The tool is used to apply drilling pressure to the spliced ​​shaft 3 and the main shaft 2, so that the main shaft 2 and the spliced ​​shaft 3 gradually extend into the rock layer of the monitored underground metal mine. The spiral groove on the surface of the drill bit 74 discharges debris, and the guide groove 741 at the front end of the main shaft 2 cooperates with the convex ring on the inner wall of the drill bit 74 to ensure smooth output of the drill bit 74 during rotation. When the drilling operation is completed, the docking block 41 is engaged with the second card hole 53 at the convex end of the last spliced ​​shaft 3 through the second card ball 51 to ensure After the vibration pickup 1 is installed on the mounting block 43, the vibration pickup 1 can be rotated on the docking block 41 through the rotating shaft 42 on the mounting block 43 to adjust the monitoring angle to meet the monitoring needs of different rock formations in the underground metal mine. Then, the left and right clamping rods 63 are inserted into the corresponding clamping grooves of the chucks 61 on the left and right sides of the docking block 41 to lock the rotation angle of the mounting block 43 to avoid the vibration causing the vibration pickup 1 to deviate during the monitoring process. After the vibration pickup 1 is installed, the vibration pickup 1 is directly coupled to the splicing shaft 3 and the main shaft 2 to monitor the rock formations of the underground metal mine. The displacement sensor in the vibration pickup 1 The sensor 102 can sense tiny vibration signals in the rock formations of underground metal mines, analyze the intensity, frequency and direction of the vibrations in real time, and thus determine whether the warning threshold is reached, and convert it into an electrical signal to transmit to the ground monitoring system. The indicator light 104 and buzzer 106 integrated on the vibration pickup 1 can dynamically switch according to the monitoring status. When there is no micro-seismicity, the indicator light 104 can provide stable lighting in the mine, and when abnormal vibration is detected, it switches to high-frequency flashing. The displacement sensor 102 in the vibration pickup 1 activates the indicator light 104 and buzzer 106 through the controller, making the indicator light 104 flash red and cooperate with the buzzer 106 to issue a high-frequency alarm, thereby doubly warning the underground metal mine workers to take emergency evacuation, thereby realizing the mutual combination of deep hole drilling and early warning monitoring.Significantly improve the depth of rock stability assessment and the timeliness of disaster warning in underground metal mines.

[0039] Example 2: Based on Example 1, Figure 1 、 Figure 7 and Figure 9 As shown, a reinforcement component 9 is provided on the main shaft 2, and the reinforcement component 9 includes a sliding sleeve 91, an assembly plate 92 and a drilling anchor rod 93. The sliding sleeve 91 is slidably installed outside the shaft body of the main shaft 2. The outer diameters of the main shaft 2 and the splicing shaft 3 are the same. As the splicing shaft 3 and the main shaft 2 extend into the rock formation in the drilling direction, the splicing shaft 3 at the rear gradually slides forward in the sliding sleeve 91. The sliding sleeve 91 is fixedly connected to the assembly plate 92, and the assembly plate 92 is threadedly connected to the drilling anchor rod 93. The drilling anchor rod 93 is parallel to the axis of the drill bit 74, and the end of the drilling anchor rod 93 facing the drill bit 74 is a pointed end. The drilling anchor rod 93 is used to drill into the rock formation of the monitored underground metal mining, so that the entire monitoring device can be fixed to the rock wall of the underground metal mining, thereby positioning the drilling angle of the drill bit 74 and improving the accuracy of subsequent drilling by the drill bit 74 in the rock formation of the underground metal mining.

[0040] like Figure 7-Figure 9 As shown, a collar 10 is detachably mounted on one end of the threaded groove on the mounting block 43, and fixed pulleys 11 are symmetrically fixedly mounted on the left and right sides of the collar 10. A second motor 12 is symmetrically fixedly mounted on the left and right sides of the assembly plate 92, and a driving wheel 13 is fixedly mounted on the output shaft of the second motor 12. A driven wheel 14 is rotatably connected to the left and right sides of the assembly plate 92, and a pull rope 15 is wound around the driving wheel 13. One end of the pull rope 15 is fixedly connected to the driving wheel 13, and the other end of the pull rope 15 is connected to the driven wheel 14 on the same side after passing through the fixed pulley 11 on the same side. After the assembly plate 92 is fixed to the rock wall of underground metal mining through the drilling anchor 93, the second motor 12 is used to drive the driving wheel 13 to continuously reel in the pull rope 15, so that the pull rope 15 acts on the fixed pulleys 11 on the left and right sides of the collar 10, so that the collar 10 can push the mounting block 43, the splicing shaft 3 and the main shaft 2 to apply pressure in the drilling direction, so that the entire monitoring device can automatically drill into the rock formation.

[0041] After the drill bit 74 has drilled into the rock wall to a certain depth, the sliding sleeve 91 is pushed along the main shaft 2 to a suitable position close to the rock wall. Then the operator uses a tightening tool to rotate the drilling anchor rod 93 so that the tip of the drilling anchor rod 93 drills into the rock formation and forms an anchor point on the rock wall. The fixation of the drilling anchor rod 93 can not only enhance the connection strength between the main shaft 2 and the rock wall, but also calibrate the initial angle of the drill bit 74 to avoid the device from being offset by the reaction force of the rock formation during the drilling process. To further improve the drilling efficiency, after the drilling anchor rod 93 positions the main shaft 2 and the splicing shaft 3 to the rock wall of the underground metal mine, the collar 10 is stably inserted into the mounting block 43, and then the second motor 12 is enabled to reverse and continuously release the pull rope 15. The operator then winds the pull rope 15 around the fixed pulley 11 of the collar 10, and then enables the second motor 12 to rotate forward. After the second motor 12 is turned, the pull rope 15 is released, and the docking block 41 is removed from the protruding end of the last splicing shaft 3. Then, the splicing shaft 3 to be newly spliced ​​is spliced ​​to the rear end, and the docking block 41 is docked to the protruding end of the new splicing shaft 3. Then, the pull rope 15 is wound around the fixed pulley 11 of the collar 10 again, and after the second motor 12 is activated, the newly spliced ​​splicing shaft 3 can also be quickly extended into the rock formation.

[0042] A method for using intelligent microseismic monitoring in underground metal mining, the specific steps are as follows:

[0043] S1. Select an appropriate number of splicing shafts 3 according to the required monitoring depth and connect them to the main shaft 2 to ensure stability. Fix the vibration pickup 1 to the docking piece 4 of the last splicing shaft 3 using the threaded rod 103 and adjust it to a suitable angle. Use the drilling assembly 7 to drill into the rock formation at the predetermined position. Secure the entire device to the rock wall using the drilling anchor 93.

[0044] S2. Activate the displacement sensor 102 to continuously monitor the vibration of the rock formations surrounding the underground metal mine. When any microseismic activity is detected, the displacement sensor 102 immediately triggers the indicator light 104 to flash and the buzzer 106 to sound an alarm through the built-in controller, immediately alerting workers in the underground metal mine to potential dangers.

[0045] S3. Once a vibration alarm occurs, the monitoring device not only warns on-site personnel through visual and auditory means, but also sends alarm information to the monitoring center to ensure that timely measures are taken to protect personnel safety and reduce accident risks.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An intelligent microseismic monitoring device for underground metal mining, characterized by: The invention comprises a vibration pickup (1), a main shaft (2) and a splicing shaft (3), wherein the vibration pickup (1) is composed of a housing (101), a displacement sensor (102) and a threaded rod (103), wherein the housing (101) of the vibration pickup (1) is internally integrated with the displacement sensor (102), one end of the housing (101) of the vibration pickup (1) is fixedly connected to the threaded rod (103), the main shaft (2) is spliced ​​with a protrusion at one end and a groove at one end of the foremost splicing shaft (3), the groove end of the splicing shaft (3) is symmetrically slidably connected to the first clamping ball (31), and the first clamping ball ( 31) is provided with a first spring (32), the protrusion end of the main shaft (2) is provided with a clamping hole (33) adapted to the first clamping ball (31), the first clamping balls (31) on both sides of the groove of the front splicing shaft (3) are clamped into the clamping hole (33) of the protrusion at one end of the main shaft (2); the two adjacent splicing shafts (3) are spliced ​​together through the protrusion of the front splicing shaft (3) and the groove of the rear splicing shaft (3), the first clamping balls (31) on the left and right sides of the groove of the rear splicing shaft (3) are clamped into the clamping hole (33) of the protrusion of the adjacent front splicing shaft (3), and the last one The protruding end of each of the splicing shafts (3) is provided with a docking piece (4) for assembling the vibration pickup (1), and the docking piece (4) includes a docking block (41), one end of the docking block (41) is provided with a groove for docking the protruding end of the last splicing shaft (3), the groove end of the docking block (41) is symmetrically slidably connected to the second clamping ball (51), the second clamping ball (51) is provided with a second spring (52) at the embedded groove, the protruding end of the last splicing shaft (3) is provided with a second clamping hole (53) adapted to the second clamping ball (51), under the action of the second spring (52), the second clamping ball (51) is provided with a second clamping hole (53) adapted to the second clamping ball (51). The second locking ball (51) is locked into the second locking hole (53), and the docking block (41) is rotatably connected to the mounting block (43) through the rotating shaft (42). The mounting block (43) is provided with a threaded groove adapted to the threaded rod (103). The end of the threaded rod (103) away from the housing (101) is connected to the threaded groove. The docking block (41) is provided with a locking member (6) for locking the rotating shaft (42) fixed on the mounting block (43). The end of the main shaft (2) away from the splicing shaft (3) is provided with a drilling assembly (7) for drilling into the underground metal mining rock formation.

2. The intelligent microseismic monitoring device for underground metal mining according to claim 1 is characterized by: The locking member (6) comprises a chuck (61), a fixing ring (62) and a clamping rod (63). The chucks (61) are symmetrically fixedly connected to the outer walls on the left and right sides of the docking block (41). The chuck (61) is provided with a plurality of clamping grooves at intervals in the circumferential direction of the disk body. The outer ends of the rotating shafts (42) fixedly connected to the left and right sides of the mounting block (43) are fixedly connected to fixing rings (62). The fixing rings (62) are located on the outer sides of the chucks (61) on the same side. A clamping rod (63) is slidably mounted on the fixing rings (62). The clamping rod (63) is used to be clamped into the clamping groove of the chucks (61) on the same side and lock the rotating mounting block (43).

3. The intelligent microseismic monitoring device for underground metal mining according to claim 2, characterized in that: An indicator light (104) is mounted on a housing (101) at one end of the vibration pickup (1) that faces away from the threaded rod (103). A transparent cover (105) is provided on the housing (101) for protecting the indicator light (104). The indicator light (104) is electrically connected to a displacement sensor (102) in the housing (101). A buzzer (106) is mounted in the housing (101). The buzzer (106) is also electrically connected to the displacement sensor (102) in the housing (101). A controller for controlling the indicator light (104) and the buzzer (106) is built into the displacement sensor (102).

4. The intelligent microseismic monitoring device for underground metal mining according to claim 3 is characterized by: The drilling assembly (7) comprises a mounting plate (71), a first motor (72), a driving plate (73) and a drill bit (74); the end of the main shaft (2) away from the splicing shaft (3) is fixedly connected to the mounting plate (71); the first motor (72) is fixedly mounted on the mounting plate (71); the output shaft of the first motor (72) is fixedly connected to the driving plate (73); the drill bit (74) is rotatably mounted on the shaft body of the main shaft (2) away from the splicing shaft (3); the inner walls of the driving plate (73) and the drill bit (74) are fixedly connected; and power supply interfaces (8) are provided on the shaft bodies of the main shaft (2) and the splicing shaft (3).

5. The intelligent microseismic monitoring device for underground metal mining according to claim 4 is characterized in that: The drill bit (74) is provided with a spiral groove for discharging debris on its surface, and a cavity for docking with the main shaft (2) is provided inside the drill bit (74). A circle of guide grooves (741) is provided on the periphery of the shaft body of the main shaft (2) near one end of the drill bit (74), and the drill bit (74) is rotatably engaged with the guide grooves (741) of the main shaft (2) through a convex ring inside the drill bit (74).

6. The intelligent microseismic monitoring device for underground metal mining according to claim 5, characterized in that: The main shaft (2) is provided with a reinforcement component (9), and the reinforcement component (9) includes a sliding sleeve (91), an assembly plate (92) and a drilling anchor rod (93). The sliding sleeve (91) is slidably mounted outside the shaft body of the main shaft (2). The main shaft (2) and the splicing shaft (3) have the same outer diameter. The sliding sleeve (91) is fixedly connected to the assembly plate (92). The drilling anchor rod (93) is threadedly connected to the assembly plate (92). The drilling anchor rod (93) is parallel to the axis of the drill bit (74), and the end of the drilling anchor rod (93) facing the drill bit (74) is a pointed end.

7. The intelligent microseismic monitoring device for underground metal mining according to claim 6, characterized in that: A collar (10) is detachably mounted on one end of the threaded groove on the mounting block (43), and fixed pulleys (11) are symmetrically fixedly mounted on the left and right ends of the collar (10). A second motor (12) is symmetrically fixedly mounted on the left and right ends of the assembly plate (92), and a driving wheel (13) is fixedly mounted on the output shaft of the second motor (12). Both left and right sides of the assembly plate (92) are rotatably connected to driven wheels (14), and a pull rope (15) is wound around the driving wheel (13), one end of the pull rope (15) is fixedly connected to the driving wheel (13), and the other end of the pull rope (15) is connected to the driven wheel (14) on the same side after passing through the fixed pulley (11) on the same side.

8. An intelligent microseismic monitoring method for underground metal mining, characterized in that: The method adopts the intelligent microseismic monitoring device for underground metal mining according to claim 7, and the method comprises the following steps: S1. Select a suitable number of splicing shafts (3) according to the required monitoring depth and connect them to the main shaft (2) to ensure stability. Fix the vibration pickup (1) to the docking piece (4) of the last splicing shaft (3) through the threaded rod (103) and adjust it to a suitable angle. Use the drilling assembly (7) to drill into the underground metal ore rock layer at a predetermined position. Use the drilling anchor (93) to secure the entire device to the rock wall. S2. Activate the displacement sensor (102) to continuously monitor the vibration of the rock formations surrounding the underground metal mine. When any microseismic activity is detected, the displacement sensor (102) immediately triggers the flashing of the indicator light (104) and the buzzer (106) to sound an alarm through the built-in controller, thereby immediately alerting the personnel in the mine to potential dangers. S3. Once a vibration alarm occurs, the monitoring device not only warns on-site personnel through visual and auditory means, but also sends alarm information to the monitoring center to ensure that timely measures are taken to protect personnel safety and reduce accident risks.

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