Mine earthquake monitoring device for deep well layout

Abstract

The invention discloses a mine earthquake monitoring device for deep well layout, and relates to the technical field of monitoring devices, the mine earthquake monitoring device comprises a shell, and a mounting rack is fixed in the shell; the measuring assembly comprises a vibration sensing module and an orientation sensing module which are coaxially fixed on the mounting frame, the vibration sensing module is used for monitoring a vibration signal, and the orientation sensing module is used for acquiring orientation deflection information of the vibration sensing module in real time; the signal processing module is in communication connection with the vibration sensing module and the direction sensing module, and performs direction correction on the vibration signals acquired by the vibration sensing module based on the direction deflection information so as to eliminate monitoring and positioning errors caused by direction deflection; a vibration sensing module and a direction sensing module are coaxially fixed on a rigid mounting frame to form a composite measurement unit with unified internal direction reference; when the device is arranged in a deep well and randomly deflects due to uncontrollable factors, the azimuth sensing module can sense the azimuth change in real time.

Description

Technical Field

[0001] This invention relates to the field of monitoring devices for underground engineering and mining engineering, and more specifically to a seismic monitoring device for deep well deployment. Background Technology

[0002] Mine seismic activity is a non-natural earthquake caused by mining disturbances. It can easily trigger a series of secondary disasters, including rock bursts, gas disasters, and water inrushes, seriously threatening the safe production of various mines and restricting the release of high-quality production capacity from deep mineral deposits. Existing seismic monitoring technologies mainly focus on underground microseismic monitoring, targeting the high-frequency signals emitted by rock fractures. However, high-frequency signals have short propagation distances and are easily affected by the environment. Underground microseismic monitoring technology requires a large-area, high-density deployment of sensors to monitor mine seismic activity at the mine scale. Traditional surface monitoring technologies focus on areas such as mining faces, roadways, and goafs, making it impossible to accurately locate mine seismic activity. Furthermore, traditional monitoring methods are limited by monitoring distance and must change location according to changes in the mining face, making them subject to environmental constraints. Therefore, establishing a complete system of surface mine seismic monitoring devices at the mine scale can not only promote the development of mine seismic monitoring technology but also strengthen early warning mechanisms for secondary disasters.

[0003] The patent with publication number CN 105785436A and patent name improves the monitoring capability by dynamically adjusting the position of the detector or increasing the installation method of the detector. It does not consider monitoring at the mining scale and the target of the monitoring is high-frequency rock fracture, focusing on underground.

[0004] The patent, with publication number CN 110454229A, is titled "A Microseismic Monitoring System for Mining." It performs microseismic monitoring by changing the type of sensor, while still focusing on underground and high-frequency waveform monitoring.

[0005] The patent, with publication number CN 110703320A, is titled "A Joint Microseismic Monitoring System and Method for Surface and Ground Systems." It improves positioning accuracy by adding a surface microseismic monitoring system and conducts joint analysis of the two systems, but does not address how to avoid interference from complex ground environments on sensor orientation and accurately acquire low-frequency mine seismic waves.

[0006] Therefore, how to provide a mine seismic monitoring device that can overcome the directional deflection of sensors in deep wells and ensure the consistency and accuracy of monitoring data direction is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] In view of this, the present invention provides a mine seismic monitoring device for deep well deployment, which aims to solve the above-mentioned technical problems.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A mine seismic monitoring device for deep well deployment includes:

[0010] A housing, wherein a mounting bracket is fixed inside the housing;

[0011] The measurement component includes a vibration sensing module and an orientation sensing module coaxially fixed on the mounting bracket. The vibration sensing module is used to monitor vibration signals, and the orientation sensing module is used to acquire the orientation deflection information of the vibration sensing module in real time.

[0012] The signal processing module is communicatively connected to the vibration sensing module and the orientation sensing module. Based on the orientation deflection information, the signal processing module performs orientation correction on the vibration signal collected by the vibration sensing module to eliminate monitoring and positioning errors caused by orientation deflection.

[0013] Through the above technical solution, the present invention provides a mine seismic monitoring device for deep well deployment. By coaxially fixing the vibration sensing module and the azimuth sensing module on a rigid mounting frame, a composite measurement unit with a unified internal directional reference is formed. When the device is deployed in a deep well and undergoes random deflection due to uncontrollable factors, the azimuth sensing module can detect the azimuth change in real time, i.e., azimuth deflection information. This information is synchronously transmitted to the signal processing module. This module does not simply record vibration data, but uses the azimuth deflection information as a key correction parameter to perform coordinate transformation and vector reconstruction on the original vibration signal collected by the vibration sensing module, thereby correcting the vibration signal to a unified geographic coordinate system at the data processing level. This technical approach fundamentally severs the erroneous correlation between the randomness of the deployment direction and the accuracy of the monitoring data, realizes the intelligent elimination of monitoring errors caused by azimuth deflection, and ensures that the final output vibration data has a unified directional reference and extremely high reliability, providing a reliable guarantee for subsequent precise positioning and analysis at the mine scale.

[0014] Preferably, the above-mentioned mine seismic monitoring device for deep well deployment further includes a self-locking triggering mechanism, wherein the self-locking triggering mechanism comprises:

[0015] A bottom end cap, which is threadedly connected to the bottom of the housing;

[0016] The triggering part is connected to the bottom wall of the bottom end cap by an elastic element, and its top edge has a plurality of downwardly inclined first claws;

[0017] Multiple arc-shaped support arms are provided. One end of each arc-shaped support arm is hinged to the bottom wall edge of the bottom end cover, and the other end of each arc-shaped support arm extends towards the central axis of the housing and is fixed with a second claw that cooperates with the first claw. When the trigger part is not pressed, the arc-shaped support arm is constrained to a retracted state by the engagement of the first claw and the second claw. When the trigger part is pressed, the second claw disengages from the inner side of the first claw, causing the arc-shaped support arm to pop outward around its hinge point to a supported state. The self-locking triggering mechanism enables rapid deployment and automatic fixation of the device in deep wells, preventing movement or tilting during monitoring. When not under pressure, the triggering unit keeps the arc-shaped support arm retracted through the engagement of the first and second jaws, facilitating the device's lowering into the well. Under pressure, the jaws separate, and the arc-shaped support arm pops out to support the well wall, forming a stable anchor. Fixing can be completed with simple pressure triggering without additional tools, reducing manual intervention and making it suitable for the narrow spaces of deep wells. After the arc-shaped support arm pops outward, it increases the contact area between the device and the well wall, preventing the device from sliding or rotating and ensuring the stability of the monitoring components.

[0018] Preferably, in the above-mentioned mine seismic monitoring device for deep well deployment, the triggering part includes a connecting column and a connecting plate fixed to the top of the connecting column. The elastic element is connected between the connecting plate and the bottom wall of the bottom end cap. Multiple first claws are evenly distributed along the edge of the connecting plate. The design of the connecting column and connecting plate allows the triggering part to move along the axis, and the elastic element provides a restoring force to prevent jamming. The first claws are evenly distributed along the edge of the connecting plate, engaging with the second claws at multiple points to increase the locking strength and prevent accidental triggering or release.

[0019] Preferably, in the above-mentioned mine seismic monitoring device for deep well deployment, a waterproof cover is threadedly connected to the top of the housing. The waterproof cover integrates a signal interface assembly, which includes an external signal interface located above the waterproof cover and an internal signal interface located on the inner top wall of the waterproof cover. The external signal interface is connected to the signal processing module via a signal transmission line; the internal signal interface is connected to the vibration sensing module and the orientation sensing module via data lines, respectively. The waterproof cover and integrated signal interface assembly achieve both sealed protection and convenient signal connection for the device. The threaded connection of the waterproof cover to the top of the housing prevents the intrusion of underground moisture and dust, protecting internal electronic components. The external signal interface facilitates connection to external devices, while the internal signal interface directly connects to the measurement components, simplifying wiring and facilitating maintenance and upgrades. Furthermore, the integration of the signal interface on the cover reduces external leads and lowers the failure rate.

[0020] Preferably, in the above-mentioned mine seismic monitoring device for deep well deployment, a non-magnetic metal sheet is detachably connected inside the housing. The non-magnetic metal sheet has a clearance hole in its center for the data cable to pass through, and a coiling area is formed between the non-magnetic metal sheet and the top surface of the mounting bracket. The clearance hole prevents the data cable from being squeezed or worn, and the coiling area keeps the data cable neatly coiled, avoiding short circuits or signal interference caused by messiness. The non-magnetic metal sheet is detachable, facilitating access to internal modules or replacement of the data cable, reducing maintenance time.

[0021] Preferably, in the above-mentioned mine seismic monitoring device for deep well deployment, an annular groove is formed on the inner side of the housing, and a C-shaped retaining spring is installed in the annular groove. The C-shaped retaining spring is sleeved on the outside of the mounting frame, and its two ends are fastened by retaining grooves. The C-shaped retaining spring sleeved on the outside of the mounting frame and fastened by retaining grooves prevents the mounting frame from loosening or rotating inside the housing, ensuring long-term coaxial alignment of the measuring components; the retaining spring structure can absorb some vibration energy, reducing mechanical interference transmitted to the measuring components; the annular groove design allows for quick installation of the retaining spring without the need for complex tools.

[0022] Preferably, in the above-mentioned mine vibration monitoring device for deep well deployment, two spaced-apart partitions are fixed inside the mounting frame. Each partition has a limiting groove, and the bottoms of the vibration sensing module and the orientation sensing module are respectively embedded in the two limiting grooves. The spaced-apart partitions avoid electromagnetic or mechanical interference between modules; the limiting grooves are embedded in the bottom of the modules to prevent the modules from moving or tilting, ensuring that the vibration and orientation measurement references are consistent; the partitions enhance the overall strength of the mounting frame and resist the influence of underground vibration.

[0023] Preferably, in the above-mentioned mine seismic monitoring device for deep well deployment, the vibration sensing module employs a three-component accelerometer; the azimuth sensing module employs an electronic compass. The three-component accelerometer simultaneously monitors the vibrations along the X, Y, and Z axes, providing comprehensive vibration data; the electronic compass outputs azimuth information in real time, which, combined with the vibration data, enables precise direction correction.

[0024] Preferably, the above-mentioned seismic monitoring device for deep well deployment further includes a housing located on the ground. The signal processing module is integrated within the housing. The signal processing module includes a signal acquisition unit and a data processing unit. The signal acquisition unit acquires vibration signals from the vibration sensing module and azimuth signals from the azimuth sensing module. The data processing unit performs directional correction on the vibration signals based on the azimuth signals. This clarifies the division of labor between signal acquisition and data processing, and outlines a complete technical path from signal acquisition and azimuth acquisition to data correction. The signal acquisition unit simultaneously acquires vibration and azimuth signals, reducing time errors. The data processing unit dynamically corrects the vibration signals based on the azimuth signals, outputting accurate seismic data suitable for real-time monitoring systems. The housing serves as an overall protective structure, integrating the signal acquisition unit and data processing unit within it.

[0025] Preferably, in the above-mentioned mine seismic monitoring device for deep well deployment, a support is fixed inside the housing, and the signal acquisition unit and data processing unit are both mounted on the support. A temperature controller and a switch are also installed on the support. Through the integration of the housing, support, temperature controller, and switch, a temperature-controlled, dustproof, orderly, and easy-to-maintain ground workstation is provided for the signal processing equipment, ensuring stable operation of the system in harsh environments.

[0026] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a mine seismic monitoring device for deep well deployment, which has the following beneficial effects:

[0027] 1. This invention fixes the vibration sensing module and the orientation sensing module coaxially on the mounting frame, and uses the signal processing module to perform intelligent orientation correction on the vibration signal based on the orientation deflection information obtained in real time by the electronic compass. This eliminates the vector monitoring error caused by the random deflection of the sensor underground, and ensures the orientation consistency and comparability of the data from different monitoring points. This lays a solid data foundation for building a mining area-scale monitoring network that can achieve precise positioning.

[0028] 2. The self-locking trigger mechanism of this invention can automatically pop out an arc-shaped support arm to support the well wall when the device touches the bottom, effectively reducing the tilt angle; internally, the mounting frame is firmly fixed by C-shaped snap rings and snap grooves, and the precise coaxial relationship of the measuring components is ensured by the limiting groove, which together constitutes a core fixing system that is impact-resistant and prevents loosening; in addition, the design of the waterproof cover, non-magnetic metal sheet and cable coil area provides excellent sealing protection and orderly cable management, comprehensively improving the engineering applicability and durability of the device.

[0029] 3. The signal processing module located inside the ground-level enclosure is responsible for data acquisition and correction, while the integrated support frame, temperature controller, and switch within the enclosure provide a constant-temperature, stable, and interconnected working environment for the equipment. This highly integrated design, combined with GPS / BDS timing and lightning protection units and multiple power supply methods, makes the entire system a flexible, accurate, and remotely unattended complete solution, greatly improving the automation level and reliability of mine seismic monitoring. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] Figure 1 The attached figure is a schematic diagram of the structure of the mine seismic monitoring device for deep well deployment provided by the present invention;

[0032] Figure 2 The attached figure is a schematic diagram of the self-locking trigger mechanism provided by the present invention;

[0033] Figure 3 The attached figure is a schematic diagram of the structure of the non-magnetic metal sheet provided by the present invention;

[0034] Figure 4 The attached figure is a schematic diagram of the C-type retaining ring provided by the present invention;

[0035] Figure 5 The attached figure is a schematic diagram of the slot structure that mates with the C-type retaining ring provided by the present invention;

[0036] Figure 6 The attached figure is a schematic diagram of the mounting bracket provided by the present invention;

[0037] Figure 7 The attached figure is a top view of the partition provided by the present invention;

[0038] Figure 8 The attached figure is a structural schematic diagram of the housing and its internal components provided by the present invention;

[0039] Figure 9 The attached figure is a schematic diagram of the structure of the mine seismic monitoring device provided by the present invention.

[0040] in:

[0041] 1-Housing; 11-Non-magnetic metal sheet; 111-Allowing hole; 12-Wire coil area; 13-C-type snap ring; 131-Hole; 14-Slot; 15-Threaded connection structure; 2-Mounting bracket; 21-Baffle; 22-Limiting groove; 23-Positioning screw; 3-Measuring component; 31-Vibration sensing module; 32-Orientation sensing module; 4-Signal processing module; 41-Signal acquisition unit; 42-Data processing unit; 5-Self-locking trigger mechanism; 51-Bottom end cover; 52-Touch 521-Connecting post; 522-Connecting plate; 53-Elastic element; 54-First claw; 55-Arc-shaped support arm; 56-Second claw; 6-Waterproof cover; 61-External signal interface; 62-Internal signal interface; 63-Protective shell; 64-Waterproof rubber gasket; 65-Pull ring; 7-Signal transmission line; 8-Enclosure; 81-Bracket; 82-Thermostat; 83-Switch; 84-Cover plate; 85-Power supply line; 86-Time synchronization and lightning protection unit; 87-Signal cable. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] See appendix Figure 1 To be continued Figure 9 This invention discloses a mine seismic monitoring device for deep well deployment, comprising:

[0044] Housing 1, with mounting bracket 2 fixed inside housing 1;

[0045] Measurement component 3 includes a vibration sensing module 31 and an orientation sensing module 32 coaxially fixed on the mounting bracket 2. The vibration sensing module 31 is used to monitor vibration signals, and the orientation sensing module 32 is used to acquire the orientation deflection information of the vibration sensing module 31 in real time.

[0046] The signal processing module 4 is communicatively connected to the vibration sensing module 31 and the orientation sensing module 32. Based on the orientation deflection information, the signal processing module 4 performs orientation correction on the vibration signal collected by the vibration sensing module 31 to eliminate the monitoring and positioning errors caused by orientation deflection.

[0047] In some specific examples, a self-locking trigger mechanism 5 is also included, which includes:

[0048] Bottom end cap 51, which is threadedly connected to the bottom of housing 1;

[0049] The trigger part 52 is connected to the bottom wall of the bottom end cap 51 by an elastic member 53, and its top edge has a plurality of downwardly inclined first claws 54.

[0050] Multiple arc-shaped support arms 55 are provided. One end of each arc-shaped support arm 55 is hinged to the bottom wall edge of the bottom end cover 51, and the other end of the arc-shaped support arm 55 extends towards the central axis of the housing 1 and is fixed with a second claw 56 that cooperates with the first claw 54. When the trigger part 52 is not pressed, the arc-shaped support arm 55 is constrained to a retracted state by the engagement of the first claw 54 and the second claw 56. When the trigger part 52 is pressed, the second claw 56 disengages from the inner side of the first claw 54, causing the arc-shaped support arm 55 to pop outward around its hinge point to a supported state.

[0051] In some other embodiments, the trigger part 52 includes a connecting post 521 and a connecting plate 522 fixed to the top of the connecting post 521. An elastic member 53 is connected between the connecting plate 522 and the bottom wall of the bottom end cap 51. A plurality of first claws 54 are evenly distributed on the edge of the connecting plate 522.

[0052] like Figure 1 As shown, the housing 1 and the bottom end cover 51 are connected by a threaded connection structure 15. The threaded connection structure includes a slot opened on the bottom wall of the housing 1 and a protrusion fixed on the upper surface of the bottom end cover. The protrusion is threadedly connected to the slot.

[0053] In a specific embodiment, a waterproof cover 6 is threadedly connected to the top of the housing 1. A signal interface assembly is integrated on the waterproof cover 6. The signal interface assembly includes an external signal interface 61 located above the waterproof cover 6 and an internal signal interface 62 located on the inner top wall of the waterproof cover 6. The external signal interface 61 is connected to the signal processing module 4 through a signal transmission line 7. The internal signal interface 62 is connected to the vibration sensing module 31 and the orientation sensing module 32 through data lines, respectively.

[0054] like Figure 1 As shown, a protective shell 63 is provided on the outside of the external signal interface 61; and waterproof rubber gaskets 64 are respectively installed on the upper surface and inner top wall of the waterproof cover 6; and a pull ring 65 is fixed on the waterproof cover 6.

[0055] In a specific example, a non-magnetic metal sheet 11 is detachably connected inside the housing 1. The non-magnetic metal sheet 11 has a clearance hole 111 in the middle for the data cable to pass through and for positioning and constraining it. A coiling area 12 for winding redundant data cables is formed between the non-magnetic metal sheet 11 and the top surface of the mounting bracket 2.

[0056] In some examples, an annular groove is provided on the inner side of the housing 1, and a C-shaped retaining spring 13 is installed in the annular groove. The C-shaped retaining spring 13 is sleeved on the outer side of the mounting bracket 2, and its two ends are fastened by retaining grooves 14. Figure 4 , 5 As shown, the mounting bracket 2 is fixed by a C-shaped retaining ring 13. The C-shaped retaining ring 13 is fixed in the slot 14 by using pliers through the holes 131 on both sides of the C-shaped retaining ring.

[0057] More specifically, such as Figure 6 As shown, the mounting bracket 2 has two spaced partitions 21 fixed inside, each partition having a limiting groove 22. The bottoms of the vibration sensing module 31 and the orientation sensing module 32 are respectively embedded in the two limiting grooves 22 and fastened by positioning screws 23.

[0058] In some specific examples, the vibration sensing module 31 uses a three-component acceleration sensor; the orientation sensing module 32 uses an electronic compass.

[0059] In some other embodiments, a housing 8 located on the bottom surface is also included. The signal processing module 4 is integrated in the housing 8. The signal processing module 4 includes a signal acquisition unit 41 and a data processing unit 42. The signal acquisition unit 41 acquires the vibration signal of the vibration sensing module 31 and the orientation signal of the orientation sensing module 32. The data processing unit 42 performs orientation correction on the vibration signal based on the orientation signal.

[0060] In a specific embodiment, a bracket 81 is fixed inside the housing 8. The bracket 81 has a mesh heat dissipation structure, and there is thermal insulation material at the bottom of the bracket where it contacts the housing 8. The signal acquisition unit 41 and the data processing unit 42 are both mounted on the bracket 81, and a temperature controller 82 and a switch 83 are also mounted on the bracket 81.

[0061] In some examples, the top of the housing 8 is hinged to a cover plate 84.

[0062] Specifically, the signal acquisition unit 41, data processing unit 42, temperature controller 82 and switch 83 are powered by power supply line 85, and the power supply can be external power supply, wind power supply or solar power supply.

[0063] More specifically, it also includes a GPS / BDS timing and lightning protection unit 86, which is connected to the signal acquisition unit 41 via a signal cable 87 to ensure accurate recording of mine vibration time.

[0064] In a specific example, the housing, waterproof cover C-shaped retaining spring, partition, and other components are all made of non-magnetic stainless steel.

[0065] The embodiments of the present invention are as follows:

[0066] First, determine the drilling location and power supply method. If a power source is nearby, connect an external power line; otherwise, use wind or solar power. Select the drilling location, clear and level the drilling site, and establish a drilling platform. During drilling, use a mud circulation system to control the drilling speed, reduce cuttings deposition, and maintain borehole stability. During drilling, lower casing to protect the borehole wall and prevent collapse. Continue drilling (in soil layers) under casing protection, with a borehole diameter of 150mm, until the boundary between bedrock and loose layers is reached. While raising the drill rod, use mud or other flushing media to clean the borehole and prevent cuttings accumulation. Switch to a rotary drilling rig and drill a bedrock borehole with a diameter of 130mm, reaching a depth of approximately 10m to the location of moderately weathered or weakly weathered rock. Use monitoring tools to ensure the borehole's verticality and diameter are as perpendicular to the ground as possible.

[0067] Before lowering the device, the vibration sensing module 31 (three-component accelerometer) and the orientation sensing module 32 (electronic compass) were tested to ensure that the orientation and vibration monitoring functions were normal.

[0068] During deployment, the entire sensor device is lowered to the designated location in the deep well by connecting a cable via the pull ring 65 on the waterproof cover 6. When the device touches the bottom, the trigger part 52 of the self-locking trigger mechanism 5 is pressed, overcoming the elastic force of the elastic element 53 and moving upward, causing the first claw 54 on it to disengage from the second claw 56 on the arc-shaped support arm 55. The released arc-shaped support arm 55 then rapidly ejects outward around its hinge point, supporting itself against the well wall, thereby correcting and locking the tilt posture of the device and improving stability.

[0069] The pop-out of the arc-shaped support arm 55 is driven by pre-stored elastic potential energy. Specifically, this elastic potential energy can be achieved through one or a combination of the following two methods:

[0070] Method 1: The arc-shaped support arm 55 is made of a highly elastic material such as spring steel. When it is constrained to the retracted state, the arm undergoes elastic deformation to store elastic potential energy. Once the constraint is released, this potential energy is released, driving the support arm to pop out.

[0071] Method 2: A torsion spring (not shown) is provided at the hinge between the arc-shaped support arm 55 and the bottom end cap 51. When the support arm is in the retracted state, the torsion spring is tightened and stores elastic potential energy; after the constraint is released, the torsion spring resets and drives the arc-shaped support arm 55 to pop out.

[0072] During monitoring, the vibration sensing module 31 (such as a three-component accelerometer) senses the mine seismic vibration signal transmitted from the strata in real time. At the same time, the azimuth sensing module 32 (i.e., an electronic compass) measures the azimuth angle in real time. Since both are strictly coaxially fixed to the mounting frame 2 through the limiting groove 22, their spatial pointing relationship is fixed and known. Therefore, the azimuth angle measured by the electronic compass is the actual deflection direction of the vibration sensor downhole.

[0073] Vibration and azimuth signals are transmitted via data cables through internal signal interface 62, waterproof cover 6, external signal interface 61, and signal transmission line 7 to signal processing module 4 located inside ground enclosure 8. Signal acquisition unit 41 first simultaneously acquires these two signals. Then, data processing unit 42 calls a preset correction algorithm, utilizing the precise azimuth deflection information provided by azimuth sensing module 32, to perform coordinate rotation and direction correction on the raw vector vibration signal acquired by vibration sensing module 31, restoring the true three-component vibration data in the geographic coordinate system. The corrected, accurate data can be transmitted to a remote monitoring center via switch 83. Throughout the process, temperature controller 82 inside enclosure 8 maintains the equipment's operating temperature, while GPS / BDS timing and lightning protection unit 86 ensures the accuracy of the timestamp and the safety of the equipment.

[0074] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0075] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mine seismic monitoring device for deep well deployment, characterized in that, include: A housing (1), wherein a mounting bracket (2) is fixed inside the housing (1); The measurement component (3) includes a vibration sensing module (31) and an orientation sensing module (32) coaxially fixed on the mounting bracket (2). The vibration sensing module (31) is used to monitor vibration signals, and the orientation sensing module (32) is used to acquire the orientation deflection information of the vibration sensing module (31) in real time. The signal processing module (4) is communicatively connected to the vibration sensing module (31) and the orientation sensing module (32), and performs orientation correction on the vibration signal collected by the vibration sensing module (31) based on the orientation deflection information, so as to eliminate the monitoring and positioning errors caused by orientation deflection.

2. The mine seismic monitoring device for deep well deployment according to claim 1, characterized in that, It also includes a self-locking trigger mechanism (5), which comprises: Bottom end cap (51), the bottom end cap (51) is threadedly connected to the bottom of the housing (1); The trigger part (52) is connected to the bottom wall of the bottom end cap (51) by an elastic member (53), and its top edge has a plurality of downwardly inclined first claws (54). Multiple arc-shaped support arms (55) are provided. One end of each arc-shaped support arm (55) is hinged to the bottom wall edge of the bottom end cover (51). The other end of the arc-shaped support arm (55) extends toward the central axis of the housing (1) and is fixed with a second claw (56) that cooperates with the first claw (54). When the trigger part (52) is not pressed, the arc-shaped support arm (55) is constrained to a retracted state by the engagement of the first claw (54) and the second claw (56). When the trigger part (52) is pressed, the second claw (56) disengages from the inner side of the first claw (54), causing the arc-shaped support arm (55) to pop outward around its hinge point to a supported state.

3. A mine seismic monitoring device for deep well deployment according to claim 2, characterized in that, The trigger part (52) includes a connecting post (521) and a connecting plate (522) fixed on the top of the connecting post (521). The elastic element (53) is connected between the connecting plate (522) and the bottom wall of the bottom end cap (51). A plurality of first claws (54) are evenly distributed along the edge of the connecting plate (522).

4. A mine seismic monitoring device for deep well deployment according to claim 1, characterized in that, The top of the housing (1) is threaded with a waterproof cover (6), and the waterproof cover (6) integrates a signal interface assembly. The signal interface assembly includes an external signal interface (61) located above the waterproof cover (6) and an internal signal interface (62) located on the inner top wall of the waterproof cover (6). The external signal interface (61) is connected to the signal processing module (4) through a signal transmission line (7). The internal signal interface (62) is connected to the vibration sensing module (31) and the orientation sensing module (32) through data lines respectively.

5. A mine seismic monitoring device for deep well deployment according to claim 4, characterized in that, The housing (1) is detachably connected to a non-magnetic metal sheet (11). The non-magnetic metal sheet (11) has a clearance hole (111) in the middle for the data cable to pass through, and a coiled area (12) is formed between the non-magnetic metal sheet (11) and the top surface of the mounting bracket (2).

6. A mine seismic monitoring device for deep well deployment according to claim 1, characterized in that, The inner side of the housing (1) is provided with an annular groove, and a C-shaped retaining spring (13) is installed in the annular groove. The C-shaped retaining spring (13) is sleeved on the outside of the mounting bracket (2), and its two ends are fastened through the retaining groove (14).

7. A mine seismic monitoring device for deep well deployment according to claim 1, characterized in that, The mounting bracket (2) has two spaced partitions (21) fixed inside, and each partition has a limiting groove (22). The bottoms of the vibration sensing module (31) and the orientation sensing module (32) are respectively embedded in the two limiting grooves (22).

8. A mine seismic monitoring device for deep well deployment according to claim 7, characterized in that, The vibration sensing module (31) uses a three-component acceleration sensor; the orientation sensing module (32) uses an electronic compass.

9. A mine seismic monitoring device for deep well deployment according to claim 1, characterized in that, It also includes a housing (8) located on the bottom surface, and the signal processing module (4) is integrated in the housing (8). The signal processing module (4) includes a signal acquisition unit (41) and a data processing unit (42). The signal acquisition unit (41) acquires the vibration signal of the vibration sensing module (31) and the orientation signal of the orientation sensing module (32). The data processing unit (42) performs orientation correction on the vibration signal based on the orientation signal.

10. A mine seismic monitoring device for deep well deployment according to claim 9, characterized in that, The housing (8) has a bracket (81) fixed inside. The signal acquisition unit (41) and the data processing unit (42) are both installed on the bracket (81). The bracket (81) also has a temperature controller (82) and a switch (83) installed on it.

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