Scanning device for crustal stress azimuth monitoring based on microseism

Abstract

The utility model relates to the technical field of microseism monitoring equipment, in particular to a scanning device for crustal stress orientation monitoring based on microseism, which comprises a shell, a detector, a connecting line and a detection head, the shell is connected with the detector through the connecting line, the bottom of the shell is fixedly connected with a breaking cone, the bottom of an inner groove of the shell is provided with eight movable grooves, and the movable grooves are arranged in the shell. A sliding block is slidably connected into the movable groove, and a movable plate is fixedly connected to the top of the sliding block. According to the scanning device for crustal stress orientation monitoring based on the microseism, the shell is arranged, the multiple moving plates in multiple directions are slidably installed in the inner groove of the shell, and the detection heads are installed at the front ends of the moving plates, so that after equipment enters a monitoring position, the moving plates drive the detection heads to extend outwards from the shell, and the detection heads are driven to move outwards; the support of the monitor in different monitoring environments is realized, meanwhile, a plurality of moving plates are arranged to carry out monitoring in multiple directions, microseisms in different directions are monitored, the microseism ground stress orientation is quickly judged and confirmed, and the microseism monitoring efficiency and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of microseismic monitoring equipment, and specifically, to a scanning device for in-situ stress azimuth monitoring based on microseismic. Background Technique

[0002] Microseismic refers to the tiny vibrations generated by rock fractures or fluid disturbances. Generally speaking, it can be divided into microseisms in engineering production and naturally occurring microseisms. The most obvious feature of the waveform is that the duration is relatively short, usually only about a few tenths of a second. Generally speaking, microseisms can be divided into two categories: microseisms in engineering production and naturally occurring microseisms. The former generally has a magnitude between -2 and 2, and this kind of microseism is caused by artificial production and construction resulting in rock fractures. The latter is caused by the change of the natural stress field causing rock fractures or the change of pore pressure caused by fluid disturbances such as magma and rainwater. In order to deal with microseisms, scanning test instruments for monitoring are set up at the engineering site to monitor the occurrence of microseisms.

[0003] For example, in the "Instrument Device for Microseismic Detection" with the publication number CN204462404U, it includes the ground surface. There is a wellbore opened on the ground surface. An instrument body is fixedly connected inside the wellbore. A working chamber and a detection chamber are opened inside the instrument body. Two cables communicating with the working chamber are fixedly connected to the upper end of the instrument body. Two annular grooves corresponding to the cable positions are opened on the inner side wall of the instrument body. Sealing rings for improving the stability and sealing performance of the cables are fixedly connected in the grooves. A three-component geophone is fixedly connected to the inner side wall of the working chamber. In the "Instrument Device for Microseismic Detection" of the utility model, a plurality of annular working rings driven by a servo motor turbine are arranged in the detection chamber and are closely attached to the inner wall of the wellbore. By closely attaching at all angles and multiple heights, the collection of microseismic waves is improved, the collection rate is greatly increased, it is convenient to install, and the performance is more reliable;

[0004] The above solution lowers the detection instrument into the well for monitoring through the support legs. However, since only a single support leg is provided and the support part is relatively close to the bottom side of the main body, and it relies on a single support leg for support in sequence, its firmness is not stable enough, and the main body may tilt. Moreover, the monitoring instrument can only operate by being supported in a wellbore of a single size. Therefore, the applicability of the monitoring instrument is poor. Content of the Utility Model

[0005] (I) Technical Problem to be Solved

[0006] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a scanning device for in-situ stress azimuth monitoring based on microseismic.

[0007] (II) Technical Solution

[0008] To achieve the above object, the present utility model provides the following technical solutions. The technical solutions adopted by a scanning device for in-situ stress azimuth monitoring based on microseismic are as follows: It includes a housing, a detector, a connecting wire, and a detection head. The housing and the detector are connected by the connecting wire. A breaking cone is fixedly connected to the bottom of the housing. Eight movable grooves are opened at the bottom of the inner groove of the housing. A slider is slidably connected to the inner groove of the movable groove. A first sliding rod is fixedly connected to the inner groove wall of the movable groove. The first sliding rod penetrates and is slidably connected to the slider. A moving plate is fixedly connected to the top of the slider. An extension opening is penetrated through the arc wall position of the housing relative to the moving plate. A baffle is rotatably connected to the outer opening position of the housing near the extension opening. The detection head is installed at one end of the moving plate close to the extension opening. A magnetic metal strip is fixedly connected to the top position of the end of the moving plate away from the extension opening. A partition plate is fixedly connected to the inner groove of the housing above the magnetic metal strip. A threaded rod is rotatably connected to the bottom of the partition plate. The bottom end of the threaded rod penetrates and is threadedly connected to an electromagnetic column.

[0009] As a preferred solution, a spring is fixedly connected between one side of the slider close to the magnetic metal strip and the inner wall of the relative movable groove.

[0010] As a preferred solution, a motor is bolted to the top of the partition plate. The output end of the motor penetrates the partition plate and is fixedly connected to the top end of the threaded rod.

[0011] As a preferred solution, a sliding groove is opened on the inner groove wall of the housing. A limiting plate is fixedly connected to the position of the top of the electromagnetic column relative to the sliding groove. The limiting plate is adapted and slidably connected to the sliding groove. A second sliding rod is fixedly connected to the inner groove wall of the sliding groove. The second sliding rod penetrates and is slidably connected to the end of the limiting plate close to the sliding groove.

[0012] As a preferred solution, a hinge is fixedly connected between the baffle and the outer wall of the housing. A return torsion spring is sleeved at the hinge shaft.

[0013] As a preferred solution, a cover plate is fixedly connected to the outer side of the baffle. A plug post is fixedly connected to the side of the cover plate close to the housing. A slot is opened on the arc wall position of the housing relative to the plug post. The plug post is adapted and inserted into the slot.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a scanning device for in-situ stress azimuth monitoring based on microseismic, which has the following beneficial effects:

[0016] 1. The scanning device for monitoring the in-situ stress azimuth based on microseismicity is provided with a housing. A plurality of moving plates in multiple directions are slidably installed in the inner groove of the housing, and a detection head is installed at the front end of the moving plate. When the device enters the monitoring wellbore, the moving plate drives the detection head to extend outwards from the housing, thereby realizing the deployment of the monitor in different monitoring wellbores, completing the support use of the device, and simultaneously carrying out multi-directional monitoring to monitor microseismicity in different directions, achieving rapid judgment and confirmation of the microseismic in-situ stress azimuth, and improving the efficiency and stability of microseismic monitoring.

[0017] 2. The scanning device for monitoring the in-situ stress azimuth based on microseismicity is provided with a magnetic metal strip and an electromagnetic column. After the electromagnetic column moves downwards, it pushes the moving plate towards the outside of the housing by magnetic repulsion. Subsequently, the moving plate drives the detection head to move out of the housing from the outlet, and then the housing is supported in the wellbore to ensure the stability of the monitoring instrument and the stability and applicability of the monitoring instrument during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the scanning device of the present utility model;

[0019] Figure 2 is a sectional three-dimensional structural schematic diagram of the housing of the present utility model;

[0020] Figure 3 is a three-dimensional structural schematic diagram of the housing of the present utility model;

[0021] Figure 4 is of the present utility model Figure 2 an enlarged structural schematic diagram of part A;

[0022] Figure 5 is of the present utility model Figure 3 an enlarged structural schematic diagram of part B.

[0023] In the figure: 1. Housing; 2. Detector; 3. Connecting wire; 4. Detection head; 5. Piercing cone; 6. Activity groove; 7. Slide block; 8. First slide bar; 9. Moving plate; 10. Outlet; 11. Baffle; 12. Magnetic metal strip; 13. Partition board; 14. Threaded rod; 15. Electromagnetic column; 16. Spring; 17. Motor; 18. Slide groove; 19. Limiting plate; 20. Second slide bar; 21. Hinge; 22. Rebound torsion spring; 23. Mask plate; 24. Insertion post; 25. Insertion slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes in detail the embodiments of the present utility model with reference to the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0025] Embodiment 1

[0026] Please refer to Figure 1 - Figure 5 , the utility model: a scanning device for in-situ stress azimuth monitoring based on microseismic, comprising a housing 1, a detector 2, a connecting wire 3 and a probe head 4. The housing 1 and the detector 2 are connected by the connecting wire 3. A breaking cone 5 is fixedly connected to the bottom of the housing 1. Eight movable grooves 6 are opened at the bottom of the inner groove of the housing 1. A slider 7 is slidably connected to the inner groove of the movable groove 6. A first sliding rod 8 is fixedly connected to the inner groove wall of the movable groove 6. The first sliding rod 8 penetrates and is slidably connected to the slider 7. A moving plate 9 is fixedly connected to the top of the slider 7. An extending opening 10 is penetrated through the arc wall position of the housing 1 opposite to the moving plate 9. A baffle 11 is rotatably connected to the outer opening position of the housing 1 near the extending opening 10. The baffle 11 protects when the housing 1 enters the detection position, preventing external objects from entering the inside of the housing 1, ensuring the safe and stable use of the components inside the housing 1. The probe head 4 is installed at one end of the moving plate 9 close to the extending opening 10. A magnetic metal strip 12 is fixedly connected to the top position of the end of the moving plate 9 away from the extending opening 10. A partition plate 13 is fixedly connected to the inner groove of the housing 1 above the magnetic metal strip 12. A threaded rod 14 is rotatably connected to the bottom of the partition plate 13. The bottom end of the threaded rod 14 penetrates and is threadedly connected to an electromagnetic column 15. Using the principle of like poles repelling, after the electromagnetic column 15 is powered on, it pushes the magnetic metal strip 12 to move, which can drive the moving plate 9 to extend out of the housing 1, so as to adapt to different monitoring wells, making the monitoring instrument more stable in use and improving the practicability of the device.

[0027] A motor 17 is bolted to the top of the partition plate 13. The output end of the motor 17 penetrates the partition plate 13 and is fixedly connected to the top end of the threaded rod 14. The motor 17 and the threaded rod 14 are both applications of existing technologies and will not be elaborated here. A spring 16 is fixedly connected between one side of the slider 7 close to the magnetic metal strip 12 and the inner wall of the opposite movable groove 6. Through the elongation and rebound of the spring 16, when the moving plate 9 extends out of the housing 1 from the extending opening 10, when the electromagnetic column 15 resets and there is no repulsive force on the magnetic metal strip 12, the spring 16 resets and rebounds, and at this time, it can drive the moving plate 9 to contract into the housing 1 to complete the reset.

[0028] A sliding groove 18 is opened on the inner groove wall of the housing 1. A limiting plate 19 is fixedly connected to the top of the electromagnetic column 15 at the position opposite to the sliding groove 18. The limiting plate 19 is adapted to and slidably connected to the sliding groove 18. A second sliding rod 20 is fixedly connected to the inner groove wall of the sliding groove 18. The second sliding rod 20 penetrates and is slidably connected to one end of the limiting plate 19 close to the sliding groove 18. When the electromagnetic column 15 moves up and down in the housing 1, the limiting plate 19 slides in the sliding groove 18, and the second sliding rod 20 limits the limiting plate 19, improving the moving stability of the electromagnetic column 15.

[0029] Embodiment 2

[0030] Refer to Figure 1- Figure 3 and Figure 5 , based on the first embodiment, a further improvement is made:

[0031] A hinge 21 is fixedly connected between the baffle 11 and the outer wall of the housing 1. A return torsion spring 22 is sleeved at the rotating shaft of the hinge 21. After the moving plate 9 is reset, the return torsion spring 22 drives the hinge 21 to rotate back, so that the baffle 11 can automatically reset to protect the inside of the housing 1. A cover plate 23 is fixedly connected to the outer side of the baffle 11. A plug post 24 is fixedly connected to the side of the cover plate 23 close to the housing 1. A slot 25 is opened at the arc wall position of the housing 1 corresponding to the plug post 24. The plug post 24 is adaptively inserted into the slot 25. The baffle 11 is fixed by inserting the plug post 24 of the cover plate 23 into the slot 25 of the housing 1, ensuring that no external debris enters the housing 1 during the process of the housing 1 descending into the soil or the well body, and keeping the inside of the housing 1 clean.

[0032] The working principle of the present utility model is as follows: When in use, the housing 1 is placed into the well body or the soil, and then the motor 17 is started. The output end of the motor 17 drives the threaded rod 14 to rotate. The threaded rod 14 drives the electromagnetic column 15 to move towards the magnetic metal strip 12. During this process, the electromagnetic column 15 slides in the chute 18 through the limiting plate 19 and is limited by the second sliding rod 20 to ensure the stable movement of the electromagnetic column 15. Subsequently, the electromagnetic column 15 moves to the inner side of the magnetic metal strip 12. Then the electromagnetic column 15 is electrified to obtain magnetism. Subsequently, based on the principle of like poles repelling each other, the magnetic metal strip 12 is pushed to move away from the electromagnetic column 15. Then the magnetic metal strip 12 drives the moving plate 9 to move. During this process, the slider 7 at the bottom of the moving plate 9 moves in the movable slot 6 and stretches the spring 16. During this process, the slider 7 is limited by the first sliding rod 8 to make the movement of the moving plate 9 stable. The moving plate 9 moves towards the outside of the housing 1. During this process, the moving plate 9 drives the detection head 4 to move outwards from the outlet 10. When the moving plate 9 passes through the outlet 10, it pushes the baffle 11 to rotate and open. Then the moving plate 9 can support the housing 1 in the soil or the well, completing the fixed use of the monitoring instrument. The baffle 11 is pushed open and rotates outside the housing 1 through the hinge 21, and drives the return torsion spring 22 to tighten. When the moving plate 9 rebounds and resets through the spring 16, at this time the return torsion spring 22 can rebound and drive the hinge 21 to rotate. Then the baffle 11 rotates to close the outlet 10, and at the same time the plug post 24 of the cover plate 23 is inserted into the slot 25 to complete the fixation of the baffle 11.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A scanning device for monitoring the azimuth of ground stress based on microseismic events, comprising a housing (1), a detector (2), a connecting line (3) and a detection head (4), wherein the housing (1) and the detector (2) are connected via a connecting line (3), and characterized in that: The bottom of the shell (1) is fixedly connected with a broken cone (5), the bottom of the inner groove of the shell (1) is provided with eight movable grooves (6), the inner groove of the movable groove (6) is slidably connected with a slider (7), the inner groove wall of the movable groove (6) is fixedly connected with a No. 1 slide bar (8), the No. 1 slide bar (8) penetrates and is slidably connected with the slider (7), the top of the slider (7) is fixedly connected with a moving plate (9), the arc wall position of the shell (1) relative to the moving plate (9) is penetrated with a protruding opening (10), and the shell (1) is close to the protruding opening. The port (10) is rotatably connected to a baffle plate (11) near the outer opening position, the detection head (4) is installed on the end of the movable plate (9) close to the extending port (10), the top position of the end of the movable plate (9) away from the extending port (10) is fixedly connected to a magnetic metal strip (12), the shell (1) is fixedly connected to the inner groove above the magnetic metal strip (12), the bottom of the partition plate (13) is rotatably connected to a threaded rod (14), and the bottom end of the threaded rod (14) passes through and is threadedly connected to an electromagnetic column (15).

2. A scanning device for monitoring the azimuth of ground stress based on microseismicity according to claim 1, characterized in that: A spring (16) is fixedly connected between the side of the slider (7) close to the magnetic metal strip (12) and the inner wall of the relatively movable groove (6).

3. The scanning device for monitoring the azimuth of ground stress based on microseismicity according to claim 1, characterized in that: The top of the partition (13) is bolted with a motor (17), and the output end of the motor (17) passes through the partition (13) and is fixedly connected to the top of the threaded rod (14).

4. The scanning device for monitoring the azimuth of ground stress based on microseismicity according to claim 1, characterized in that: The inner groove wall of the housing (1) is provided with a slide groove (18); the top of the electromagnetic column (15) is fixedly connected to a limit plate (19) at a position relative to the slide groove (18); the limit plate (19) is adapted to and slidably connected to the slide groove (18); the inner groove wall of the slide groove (18) is fixedly connected with a second slide bar (20); the second slide bar (20) penetrates and is slidably connected to one end of the limit plate (19) near the slide groove (18).

5. The scanning device for monitoring the azimuth of ground stress based on microseismicity according to claim 1, characterized in that: The baffle (11) is fixedly connected to the outer wall of the housing (1) by a hinge (21), and a rebound torsion spring (22) is sleeved on the rotating shaft of the hinge (21).

6. The scanning device for monitoring the azimuth of ground stress based on microseismicity according to claim 1, characterized in that: The baffle (11) is fixedly connected to a mask plate (23) on the outer side, and the mask plate (23) is fixedly connected to a plug post (24) on the side close to the shell (1). The shell (1) is provided with a slot (25) at an arc wall position relative to the plug post (24), and the plug post (24) is adapted to be plugged into the slot (25).

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