Soil layer vibration monitoring device

Abstract

The utility model discloses a soil layer vibration monitoring device, and relates to the technical field of rock-soil vibration monitoring, and the soil layer vibration monitoring device is used for being placed in a drill hole of a soil layer and receiving vibration transmitted by the soil layer so as to monitor vibration data of the soil layer. The soil layer vibration monitoring device comprises a vibration sensor assembly, a side supporting assembly and a lowering fixing assembly, when the soil layer vibration monitoring device is placed in a drill hole, the extension piece is operated to drive the adapter to rotate in the first direction, and the adapter drives the sleeve to synchronously rotate in the first direction; the casing pipe can move in the direction close to the vibration sensor assembly along the middle shaft, and the casing pipe can drive the multiple side supporting plates to move in the direction away from the middle shaft through the transmission structure in the moving process, so that the multiple side supporting plates can abut against the inner wall face of the drill hole; the soil layer vibration monitoring device can make full contact with the inner wall face of the drill hole, vibration data of the soil layer can be conveniently monitored, and accurate vibration data can be obtained.

Description

Technical Field

[0001] This application relates to the field of soil and rock vibration monitoring technology, and in particular to a soil vibration monitoring device. Background Technology

[0002] In recent years, with the rapid development of urban rail transit in my country, the density of urban road networks has continued to increase, and the resulting vibration problem in the operating environment of subway trains has become increasingly prominent.

[0003] In related technologies, the adverse effects of vibration are reduced by laying an elastic cushion layer at the vibration source or by setting up barrier structures such as vibration isolation trenches and vibration isolation piles in the propagation path. However, the effectiveness of vibration isolation technology depends heavily on a precise understanding of the vibration characteristics of deep soil layers. Without real-time monitoring data of deep soil layer vibration, vibration isolation design will lack a scientific basis, making it difficult not only to accurately analyze the vibration propagation law but also to determine the key design parameters of vibration isolation measures.

[0004] To effectively monitor vibrations in deep soil layers, vibration sensors need to be precisely installed in the strata at a predetermined depth. However, in actual engineering projects, complex geological conditions make it difficult to install and position vibration sensors, and it is also difficult to ensure sufficient contact between the vibration sensor and the soil, which seriously affects the accuracy of vibration signal acquisition. Utility Model Content

[0005] This application provides a soil vibration monitoring device that can solve the technical problems of difficult installation and positioning of vibration sensors and inaccurate monitoring data.

[0006] In a first aspect, embodiments of this application provide a soil vibration monitoring device for placement within a borehole in a soil layer, receiving vibrations transmitted by the soil layer to monitor vibration data of the soil layer, characterized in that the soil vibration monitoring device comprises:

[0007] A vibration sensor assembly for monitoring vibration data of the soil layer;

[0008] The side support assembly includes a central shaft, a transmission structure, and multiple side support plates. The first end of the central shaft is connected to the top of the vibration sensor assembly. The multiple side support plates are arranged at intervals along the circumference of the central shaft, and the multiple side support plates are connected to the central shaft through the transmission structure.

[0009] The lower fixing component includes a sleeve and an adapter. The sleeve is fitted onto the second end of the central shaft and threaded into the central shaft. The sleeve is connected to the transmission structure. The adapter is detachably connected to the sleeve and can rotate relative to the sleeve to switch between a locked position and an unlocked position. The adapter is used to connect to an operating extension that extends axially along the central shaft.

[0010] When the adapter rotates to the locking position along the first direction around the axis of the central shaft, the adapter locks with the sleeve. The adapter can drive the sleeve to rotate along the first direction, so that the sleeve rotates relative to the central shaft along the first direction, thereby causing the sleeve to move along the central shaft toward the vibration sensor assembly. The sleeve drives the multiple side support plates to move away from the central shaft through the transmission structure.

[0011] When the adapter rotates to the unlocked position in the second direction about the axial direction of the central axis, the adapter can disengage from the sleeve. The second direction is opposite to the first direction.

[0012] In some embodiments, the sleeve has a receiving groove on the side facing away from the vibration sensor assembly, and a locking groove is provided on the inner sidewall of the receiving groove. The locking groove and the receiving groove are arranged along the circumference of the sleeve and communicate with the receiving groove. The adapter has a locking part.

[0013] When the adapter is in the locked position, the locking part is inserted into the locking groove; when the adapter is rotated from the locked position to the unlocked position in the second direction, the locking part moves from the locking groove to the receiving groove, and the locking part can move in and out of the receiving groove.

[0014] In some embodiments, the transmission structure includes:

[0015] The slider is slidably sleeved on the central shaft and located on the side of the sleeve closer to the vibration sensor assembly;

[0016] The first hinge rod has one end rotatably connected to the slider and the other end rotatably connected to the side support plate;

[0017] When the sleeve rotates along the first direction, the sleeve drives the slider to slide along the central axis toward the vibration sensor assembly, and the first hinge rod drives the side support plate to move away from the central axis until it abuts against the inner wall of the borehole.

[0018] In some embodiments, the transmission structure further includes:

[0019] The second hinge rod has one end rotatably connected to the top of the vibration sensor assembly and the other end rotatably connected to the side support plate, and the second hinge rod is set at an angle to the first hinge rod.

[0020] In some embodiments, the transmission structure further includes:

[0021] An elastic element is sleeved on the central shaft and located between the slider and the vibration sensor assembly. One end of the elastic element abuts against the slider, and the other end abuts against the vibration sensor assembly. The elastic element is in a compressed state.

[0022] In some embodiments, the side support assembly further includes:

[0023] Multiple arc-shaped plates, one of which is connected to a corresponding side support plate, the arc-shaped plate being located on the side of the side support plate facing away from the central axis, and the arc-shaped plate being used to abut against the inner wall surface of the drilled hole.

[0024] In some embodiments, the vibration sensor assembly includes:

[0025] The housing has at least three assembly cavities inside, the three assembly cavities being arranged axially along the central axis;

[0026] At least three vibration sensors are respectively disposed in the three assembly cavities and connected to the housing;

[0027] Wherein, at least one of the vibration sensors is used to detect vibration data transmitted along the X direction, at least one of the vibration sensors is used to detect vibration data transmitted along the Y direction, and at least one of the vibration sensors is used to detect vibration data transmitted along the Z direction. The X direction is set at an angle to the Y direction, and the Z direction is set at an angle to both the X direction and the Y direction.

[0028] In some embodiments, the vibration sensor assembly further includes a mounting bracket that engages with the vibration sensor and is connected to the housing to secure the vibration sensor.

[0029] In some embodiments, the central shaft has a wire channel that extends axially along the central shaft, with one end of the wire channel communicating with the assembly cavity and the other end communicating with the sleeve, and the connecting wires of each vibration sensor passing through the wire channel and the sleeve.

[0030] In some embodiments, one end of the operating extension is detachably connected to the adapter, and the length of the operating extension is greater than the depth of the borehole.

[0031] The soil vibration monitoring device based on the embodiments of this application has at least the following technical effects:

[0032] By connecting the first end of the central shaft to the top of the vibration sensor assembly, multiple side support plates are arranged at intervals along the circumference of the central shaft. These side support plates are connected to the central shaft via a transmission structure. The sleeve is threadedly engaged with the second end of the central shaft and is also connected to the transmission structure. An adapter is detachably connected to the sleeve and can rotate relative to the sleeve to switch between a locked and unlocked position. The adapter also connects to an operating extension. When monitoring vibration data in deep soil layers is required, the adapter can be rotated to the locked position, locking the adapter and sleeve together. The soil vibration monitoring device is then placed inside the borehole in the soil layer. The operating extension extends out of the borehole, driving the adapter to rotate in a first direction. The adapter then drives the sleeve to rotate synchronously in the first direction. Because the sleeve is threadedly engaged with the central shaft... This allows the casing to move along the central axis towards the vibration sensor assembly. During this movement, the casing drives multiple side support plates to move away from the central axis via a transmission structure, ensuring that all side support plates abut against the inner wall of the borehole. This allows the vibration of the deep soil layer to be transmitted to the vibration sensor assembly via the side support plates, enabling the vibration sensor assembly to monitor the soil vibration data. After the soil vibration monitoring device is installed, the operating extension is rotated in the second direction, allowing the adapter to rotate to the unlocked position, thus detaching the adapter from the casing. This allows the operating extension and adapter to be easily removed from the borehole, facilitating the installation of the entire soil vibration monitoring device at the bottom of the borehole and ensuring full contact between the device and the inner wall of the borehole for convenient monitoring of soil vibration data. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A three-dimensional structural schematic diagram of a soil vibration monitoring device provided in this application embodiment;

[0035] Figure 2 A schematic diagram of the structure provided in the embodiment of this application, showing the side support plate unfolding in a direction away from the central axis;

[0036] Figure 3 A step diagram illustrating the steps of fixing the soil vibration monitoring device in a borehole according to an embodiment of this application;

[0037] Figure 4 A three-dimensional structural diagram of the sleeve provided in the embodiments of this application;

[0038] Figure 5 This is a three-dimensional structural diagram of the adapter provided in the embodiments of this application;

[0039] Figure 6 This is a partial cross-sectional view of the soil vibration monitoring device provided in the embodiments of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 100. Soil vibration monitoring device;

[0042] 10. Vibration sensor assembly; 11. Housing; 111. Assembly cavity; 12. Vibration sensor; 13. Mounting bracket;

[0043] 20. Side support assembly; 21. Central shaft; 211. Threading channel; 22. Transmission structure; 221. Slider; 222. First hinge rod; 223. Second hinge rod; 224. Elastic element; 23. Side support plate; 24. Arc plate;

[0044] 30. Lowering and fixing component; 31. Sleeve; 311. Receiving groove; 312. Locking groove; 32. Adapter; 321. Locking part; 33. Operating extension;

[0045] 200. Soil layer;

[0046] 300. Drilling. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0048] In recent years, with the rapid development of urban rail transit in my country and the continuous increase in urban road network density, the vibration problem of subway train operation environment has become increasingly prominent, causing increasingly significant negative impacts on the work and life quality of residents along the line.

[0049] From the perspective of vibration propagation principles, the vibrations generated by train operation, after being transmitted to the soil layer through the track structure, will spread outwards in the form of body waves (including longitudinal and transverse waves) and surface waves. Due to the influence of differences in the geological structure and soil properties of deep soil layers, vibration waves will undergo reflection, refraction, and transmission during propagation, resulting in significant changes in their propagation speed and amplitude attenuation characteristics.

[0050] In relevant vibration isolation technologies, whether by laying an elastic cushion layer at the vibration source or by setting up barrier structures such as vibration isolation trenches and vibration isolation piles in the propagation path, the vibration isolation effect is closely related to the vibration characteristics of the deep soil layer. Without the support of real-time monitoring data on the vibration of the deep soil layer, vibration isolation design will lose its scientific basis, making it difficult not only to accurately analyze the vibration propagation law, but also to determine the key design parameters of the vibration isolation measures.

[0051] To effectively monitor vibrations in deep soil layers, it is necessary to drill holes in the soil and precisely install vibration sensors within these holes at predetermined depths. Furthermore, it is crucial to ensure close contact between the vibration sensors and the surrounding soil to acquire accurate vibration data. However, in actual engineering projects, complex geological conditions make the installation and positioning of vibration sensors difficult. For example, deep boreholes with small diameters may hinder operator work, and even after placement, it is difficult to guarantee sufficient contact between the vibration sensor and the soil, severely impacting the accuracy of vibration signal acquisition.

[0052] Please see Figures 1 to 3 To address the aforementioned technical problems, this application provides a soil vibration monitoring device 100. The soil vibration monitoring device 100 is placed inside a borehole 300 in a soil layer 200 and receives vibrations transmitted from the soil layer 200 to monitor vibration data. The soil vibration monitoring device 100 includes a vibration sensor assembly 10, a side support assembly 20, and a lowering fixing assembly 30. When the soil vibration monitoring device 100 is placed inside the borehole 300, the vibration sensor assembly 10 is located below the side support assembly 20, and the lowering fixing assembly 30 is located above the side support assembly 20. The lowering fixing assembly 30 is used to drive the side support assembly 20 to abut against the inner wall of the borehole 300, so that the vibration of the soil layer 200 can be transmitted to the vibration sensor assembly 10 through the side support assembly 20. Therefore, the vibration sensor assembly 10 can monitor the vibration of the soil layer 200 and obtain accurate vibration data.

[0053] Specifically, the side support assembly 20 includes a central shaft 21, a transmission structure 22, and multiple side support plates 23. The central shaft 21 is a round rod structure. The first end and the second end of the central shaft 21 are opposite ends of the central shaft 21. The first end of the central shaft 21 is connected to the top of the vibration sensor assembly 10, and the second end of the central shaft 21 extends away from the vibration sensor assembly 10. The second end of the central shaft 21 is provided with a first thread structure. The multiple side support plates 23 are arranged at intervals along the circumference of the central shaft 21, and the multiple side support plates 23 can be connected to the central shaft 21 through the transmission structure 22.

[0054] The lowering fixing component 30 includes a sleeve 31 and an adapter 32. The sleeve 31 is a hollow tube with a second threaded structure inside. The sleeve 31 is fitted onto the second end of the central shaft 21, and the second threaded structure can cooperate with the first threaded structure. The sleeve 31 can also be connected to the transmission structure 22. The adapter 32 is detachably connected to the sleeve 31 and can rotate relative to the sleeve 31 to switch between a locked position and an unlocked position. The adapter 32 can also be connected to the operating extension 33, which can extend along the axial direction of the central shaft 21. When the soil vibration monitoring device 100 is placed entirely inside the borehole 300, the operating extension 33 can extend out of the borehole 300.

[0055] When it is necessary to monitor vibration data of the deep soil layer 200, the adapter 32 can be rotated to the locked position, so that the adapter 32 and the sleeve 31 are locked together, and the soil vibration monitoring device 100 is placed in the borehole 300 of the soil layer 200. By operating the extension 33, the adapter 32 can be driven to rotate in the first direction, and the adapter 32 can drive the sleeve 31 to rotate synchronously in the first direction. Since the sleeve 31 is threaded with the central shaft 21, the sleeve 31 can move along the central shaft 21 towards the vibration sensor assembly 10. During the movement, the sleeve 31 can drive multiple side support plates 23 to move away from the central shaft 21 through the transmission structure 22, so that multiple side support plates 23 can abut against the inner wall surface of the borehole 300. Thus, the vibration of the deep soil layer 200 can be transmitted to the central shaft 21 through the side support plate 23, and then transmitted to the vibration sensor assembly 10 through the central shaft 21. The vibration sensor assembly 10 can then monitor the vibration data of the soil layer 200. After the soil vibration monitoring device 100 is installed, the operating extension 33 is rotated in the second direction so that the adapter 32 can be rotated to the unlocked position, that is, the adapter 32 can be disengaged from the sleeve 31. Thus, the operating extension and the adapter 32 can be easily removed from the borehole 300 together. The soil vibration monitoring device 100 can be easily installed as a whole at the bottom of the borehole 300, and the soil vibration monitoring device 100 can be in full contact with the inner wall of the borehole 300, which is convenient for monitoring the vibration data of the soil layer 200.

[0056] Please see Figures 4 to 6In some embodiments, the sleeve 31 has a receiving groove 311 on the side facing away from the vibration sensor assembly 10. The inner sidewall of the receiving groove 311 is provided with a locking groove 312. The locking groove 312 and the receiving groove 311 are arranged along the circumference of the sleeve 31 and are connected to each other. The adapter 32 has a locking part 321. When the adapter 32 is in the locked position, the locking part 321 is inserted into the locking groove 312. When the adapter 32 is rotated from the locked position to the unlocked position in the second direction, the locking part 321 moves from the locking groove 312 to the receiving groove 311. The locking part 321 can move in and out of the receiving groove 311.

[0057] Optionally, the sleeve 31 has a connecting plate on the side facing away from the vibration sensor assembly 10. The connecting plate is in the shape of a disc and is connected to the sleeve 31. Alternatively, the sleeve 31 and the connecting plate are integrally formed. The connecting plate has the receiving groove 311. The inner sidewall of the receiving groove 311 is provided with a locking groove 312. The locking groove 312 and the receiving groove 311 are arranged along the circumference of the sleeve 31, and the opening of the locking groove 312 communicates with the receiving groove 311. The opening of the receiving groove 311 allows the adapter 32 and the locking part 321 to enter and exit together.

[0058] When the adapter 32 is in the locked position, the locking part 321 can be inserted into the locking groove 312 and the locking part 321 can abut against the inner side wall of the locking groove 312. Thus, when the adapter 32 rotates in the first direction, the adapter 32 can drive the sleeve 31 to rotate in the first direction. When the adapter 32 rotates from the locked position to the unlocked position in the second direction, the locking part 321 moves from the locking groove 312 to the receiving groove 311, so that the adapter 32 can be easily removed from the receiving groove 311, and the operating extension 33 can be easily removed from the drill hole 300.

[0059] Please see Figure 1 , Figure 2 as well as Figure 6 In some embodiments, the transmission structure 22 includes a slider 221 and a first hinge rod 222. The slider 221 is slidably sleeved on the central shaft 21 and is located on the side of the sleeve 31 near the vibration sensor assembly 10. One end of the first hinge rod 222 is rotatably connected to the slider 221 and the other end is rotatably connected to the side support plate 23. When the sleeve 31 rotates in the first direction, the sleeve 31 drives the slider 221 to slide along the central shaft 21 towards the vibration sensor assembly 10, and the first hinge rod 222 drives the side support plate 23 to move away from the central shaft 21 until it abuts against the inner wall surface of the borehole 300.

[0060] Optionally, the slider 221 has a square structure and a through hole in the middle position. The central shaft 21 passes through the through hole, so that the slider 221 can be slidably sleeved on the central shaft 21. The first hinge rod 222 is a long straight rod. The first end of the first hinge rod 222 is rotatably connected to the slider 221, and the second end of the first hinge rod 222 is rotatably connected to the side support plate 23. Along the axial direction of the central shaft 21, the first end of the first hinge rod 222 is further away from the vibration sensor assembly 10 than the second end of the first hinge rod 222.

[0061] When the sleeve 31 rotates in the first direction, the sleeve 31 drives the slider 221 to slide along the central axis 21 toward the direction of the vibration sensor assembly 10. The slider 221 can drive the first end of the first hinge rod 222 to move toward the direction of the vibration sensor assembly 10, so that the second end of the first hinge rod 222 can drive the side support plate 23 to move away from the central axis 21 until the side support plate 23 abuts against the inner wall surface of the drill hole 300, thereby ensuring that the side support plate 23 and the inner wall surface of the drill hole 300 are in full contact.

[0062] Please see Figure 2 and Figure 6 In some embodiments, the transmission structure 22 further includes a second hinge rod 223, one end of which is rotatably connected to the top of the vibration sensor assembly 10, and the other end of which is rotatably connected to the side support plate 23. The second hinge rod 223 is set at an angle to the first hinge rod 222.

[0063] Optionally, the second hinge rod 223 is a long straight rod. The first end of the second hinge rod 223 is rotatably connected to the top of the vibration transmission assembly, and the second end of the second hinge rod 223 is rotatably connected to the side support plate 23. The second end of the second hinge rod 223 can be located below the second end of the first hinge rod 222, so that the second hinge rod 223 and the first hinge rod 222 are set at an angle.

[0064] It should be noted that when the sleeve 31 rotates in the first direction, the sleeve 31 drives the slider 221 to slide along the central axis 21 toward the direction closer to the vibration sensor assembly 10. The slider 221 can drive the side support plate 23 to move away from the central axis 21 through the first hinge rod 222. At this time, the second end of the second hinge rod 223 can synchronously drive the side support plate 23 to move away from the central axis 21, so that the second hinge rod 223 will not hinder the first hinge rod 222 from driving the side support plate 23 to move away from the central axis 21.

[0065] It is understandable that when the side support plate 23 comes into contact with the inner wall of the borehole 300, the vibration of the soil layer 200 can be transmitted to the side support plate 23. The side support plate 23 can transmit the vibration to the vibration sensor assembly 10 through the second hinge rod 223, thereby reducing the vibration transmission path and enabling the vibration sensor assembly 10 to receive more vibration energy, further improving the accuracy of the vibration data acquired by the vibration sensor assembly 10.

[0066] Please see Figure 1 and Figure 2 In some embodiments, the transmission structure 22 further includes an elastic element 224, which is sleeved on the central shaft 21 and located between the slider 221 and the vibration sensor assembly 10. One end of the elastic element 224 abuts against the slider 221, and the other end of the elastic element 224 abuts against the vibration sensor assembly 10. The elastic element 224 is in a compressed state.

[0067] Optionally, the elastic element 224 can be a spring. The elastic element 224 is compressed between the slider 221 and the vibration sensor assembly 10, so that the elastic element 224 can support the slider 221 below, thereby preventing the slider 221 from moving towards the vibration sensor assembly 10 due to its own gravity. When the sleeve 31 rotates in the first direction and the sleeve 31 drives the slider 221 to slide towards the vibration sensor assembly 10 along the central axis 21, the slider 221 can further compress the elastic element 224 and drive the first end of the first hinge rod 222 to move downward, so that the second end of the first hinge rod 222 can drive the side support plate 23 to move away from the central axis 21.

[0068] Please see Figure 1 and Figure 2 In some embodiments, the side support assembly 20 further includes a plurality of arc plates 24, one arc plate 24 being connected to a side support plate 23, and the arc plate 24 being located on the side of the side support plate 23 facing away from the central axis 21, and the arc plate 24 being used to abut against the inner wall surface of the borehole 300.

[0069] Optionally, multiple arc-shaped plates 24 can be spaced apart along the periphery of the central axis 21, with the arc-shaped plates 24 protruding away from the central axis 21. The side of the arc-shaped plates 24 facing away from the central axis 21 is the contact surface. When the arc-shaped plates 24 abut against the inner wall surface of the borehole 300, the contact surface can fit against the inner wall surface of the borehole 300, thereby increasing the contact area between the side support assembly 20 and the borehole 300. This allows the soil vibration monitoring device 100 to fully contact the inner wall surface of the borehole 300, enabling the soil vibration monitoring device 100 to receive more vibrations and further improve the accuracy of the vibration data.

[0070] Please see Figure 6In some embodiments, the vibration sensor assembly 10 includes a housing 11 and at least three vibration sensors 12. The housing 11 has at least three assembly cavities 111 inside, which are arranged axially along the central axis 21. The three vibration sensors 12 are respectively disposed in the assembly cavities 111, and each vibration sensor 12 is connected to the housing 11. At least one vibration sensor 12 is used to detect vibration data transmitted in the X direction, at least one vibration sensor 12 is used to detect vibration data transmitted in the Y direction, and at least one vibration sensor 12 is used to detect vibration data transmitted in the Z direction. The X direction is set at an angle to the Y direction, and the Z direction is set at an angle to both the X and Y directions.

[0071] Optionally, the housing 11 includes a housing and two partition plates disposed within the housing. The housing is cylindrical in shape, and the partition plates are disc-shaped. The two partition plates are arranged axially along the central axis 21 within the housing. Both partition plates are connected to the inner side of the housing, so that the two partition plates can divide the interior of the housing into three assembly cavities 111. The three assembly cavities 111 are arranged axially along the central axis 21. Three vibration sensors 12 are respectively disposed in the three assembly cavities 111, and two of the vibration sensors 12 are respectively fixed to the two partition plates, while the other vibration sensor 12 is fixed to the housing.

[0072] One of the three vibration sensors 12 is used to detect vibration data transmitted in the X direction, another of the three vibration sensors 12 is used to detect vibration data transmitted in the Y direction, and the remaining one of the three vibration sensors 12 is used to detect vibration data transmitted in the Z direction. In this embodiment, the X direction is... Figure 6 The X-axis direction and the Y-axis direction are... Figure 6 The Y-axis direction and the Z-axis direction are... Figure 6 The Z-axis direction in the image allows the vibration sensor assembly 10 to simultaneously monitor vibrations in three different directions, thereby further improving the accuracy of vibration data.

[0073] Of course, in other embodiments, more than three vibration sensors 12 may be included. This application does not limit the number of vibration sensor 12 bodies, as long as it is ensured that there are three vibration sensors 12 simultaneously monitoring vibrations in three different directions.

[0074] Please see Figure 6 In some embodiments, the vibration sensor assembly 10 further includes a fixing bracket 13, which is engaged with the vibration sensor 12 and connected to the housing 11 to fix the vibration sensor 12.

[0075] Optionally, the fixing bracket 13 includes a first fixing plate, a second fixing plate, a third fixing plate, and at least two connecting plates. The first fixing plate and the third fixing plate are located on opposite sides of the vibration sensor 12, and both the first fixing plate and the third fixing plate extend axially along the central axis 21. The second fixing plate is located above the vibration sensor 12 and extends to connect with the first fixing plate and the third fixing plate. The two connecting plates are located on opposite sides of the vibration sensor 12 and are connected to the first fixing plate and the third fixing plate, respectively. The two connecting plates and the outer shell 11 enable the fixing bracket 13 to fix the vibration sensor 12 to the outer shell 11, preventing the vibration sensor 12 from shaking relative to the outer shell 11 and facilitating the vibration sensor 12 to receive the vibration of the soil layer 200.

[0076] Please see Figure 3 In some embodiments, the central shaft 21 has a wire channel 211 that extends along the axial direction of the central shaft 21. One end of the wire channel 211 is connected to the assembly cavity 111, and the other end of the wire channel 211 is connected to the sleeve 31. The connecting wires of each vibration sensor 12 are threaded through the wire channel 211 and the sleeve 31.

[0077] Optionally, the partition plate may be provided with wire holes, through which the connecting wires of the vibration sensor 12 can be passed. This allows the connecting wires of multiple vibration sensors 12 inside the housing 11 to be concentrated in the uppermost assembly cavity 111. Furthermore, the connecting wires of multiple vibration sensors 12 can be passed through the wire channel 211 and the sleeve 31, thereby organizing the multiple connecting wires within the central axis 21 and facilitating the overall arrangement of the connecting wires inside the housing 11.

[0078] Please see Figure 3 In some embodiments, one end of the operating extension 33 is detachably connected to the adapter 32, and the length of the operating extension 33 is greater than the depth of the drill hole 300.

[0079] Optionally, the operating extension 33 can be a long rod, which can be a steel pipe. The operating extension 33 is connected to the adapter 32. The soil vibration monitoring device 100 can be hoisted into the borehole 300 as a whole through the operating extension 33, which makes it very convenient to place the soil vibration monitoring device 100 into the borehole 300.

[0080] In addition, the operating extension 33 can be a hollow tube. After the connecting wire harness of the vibration sensor 12 is neatly arranged inside the central shaft 21, multiple connecting wire harnesses can also be run through the operating extension 33 and extend to the outside of the borehole 300. When hoisting the soil vibration monitoring device 100, the connecting wire harnesses can be prevented from interfering with the hoisting.

[0081] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0082] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A soil layer vibration monitoring device for placement within a borehole in a soil layer and receiving vibrations transmitted by the soil layer to monitor vibration data of the soil layer, characterized by, The soil vibration monitoring device includes: A vibration sensor assembly for monitoring vibration data of the soil layer; The side support assembly includes a central shaft, a transmission structure, and multiple side support plates. The first end of the central shaft is connected to the top of the vibration sensor assembly. The multiple side support plates are arranged at intervals along the circumference of the central shaft, and the multiple side support plates are connected to the central shaft through the transmission structure. The lower fixing component includes a sleeve and an adapter. The sleeve is fitted onto the second end of the central shaft and threaded into the central shaft. The sleeve is connected to the transmission structure. The adapter is detachably connected to the sleeve and can rotate relative to the sleeve to switch between a locked position and an unlocked position. The adapter is used to connect to an operating extension that extends axially along the central shaft. When the adapter rotates to the locking position along the first direction around the axis of the central shaft, the adapter locks with the sleeve. The adapter can drive the sleeve to rotate along the first direction, so that the sleeve rotates relative to the central shaft along the first direction, thereby causing the sleeve to move along the central shaft toward the vibration sensor assembly. The sleeve drives the multiple side support plates to move away from the central shaft through the transmission structure. When the adapter rotates to the unlocked position in the second direction around the central axis, the adapter can disengage from the sleeve. The second direction is opposite to the first direction.

2. The soil layer vibration monitoring apparatus according to claim 1, characterized by The sleeve has a receiving groove on the side facing away from the vibration sensor assembly. The inner wall of the receiving groove is provided with a locking groove. The locking groove and the receiving groove are arranged along the circumference of the sleeve and communicate with the receiving groove. The adapter has a locking part. When the adapter is in the locked position, the locking part is inserted into the locking groove; when the adapter is rotated from the locked position to the unlocked position in the second direction, the locking part moves from the locking groove to the receiving groove, and the locking part can move in and out of the receiving groove.

3. The soil layer vibration monitoring apparatus according to claim 1, characterized by The transmission structure includes: The slider is slidably sleeved on the central shaft and located on the side of the sleeve closer to the vibration sensor assembly; The first hinge rod has one end rotatably connected to the slider and the other end rotatably connected to the side support plate; When the sleeve rotates along the first direction, the sleeve drives the slider to slide along the central axis toward the vibration sensor assembly, and the first hinge rod drives the side support plate to move away from the central axis until it abuts against the inner wall of the borehole.

4. The soil layer vibration monitoring apparatus according to claim 3, characterized by The transmission structure also includes: The second hinge rod has one end rotatably connected to the top of the vibration sensor assembly and the other end rotatably connected to the side support plate, and the second hinge rod is set at an angle to the first hinge rod.

5. The soil layer vibration monitoring apparatus according to claim 3, characterized by The transmission structure also includes: An elastic element is sleeved on the central shaft and located between the slider and the vibration sensor assembly. One end of the elastic element abuts against the slider, and the other end abuts against the vibration sensor assembly. The elastic element is in a compressed state.

6. The soil layer vibration monitoring apparatus according to claim 1, wherein The side support assembly also includes: Multiple arc-shaped plates, one of which is connected to a corresponding side support plate, the arc-shaped plate being located on the side of the side support plate facing away from the central axis, and the arc-shaped plate being used to abut against the inner wall surface of the drilled hole.

7. The soil layer vibration monitoring apparatus according to claim 1, wherein The vibration sensor assembly includes: The housing has at least three assembly cavities inside, the three assembly cavities being arranged axially along the central axis; At least three vibration sensors are respectively disposed in the three assembly cavities and connected to the housing; Wherein, at least one of the vibration sensors is used to detect vibration data transmitted along the X direction, at least one of the vibration sensors is used to detect vibration data transmitted along the Y direction, and at least one of the vibration sensors is used to detect vibration data transmitted along the Z direction. The X direction is set at an angle to the Y direction, and the Z direction is set at an angle to both the X direction and the Y direction.

8. The soil layer vibration monitoring apparatus according to claim 7, characterized by The vibration sensor assembly also includes a fixing bracket, which is engaged with the vibration sensor and connected to the housing to fix the vibration sensor in place.

9. The soil layer vibration monitoring apparatus according to claim 7, characterized by The central shaft has a wire-passing channel that extends along the axial direction of the central shaft. One end of the wire-passing channel is connected to the assembly cavity, and the other end of the wire-passing channel is connected to the sleeve. The connecting wires of each vibration sensor are passed through the wire-passing channel and the sleeve.

10. The soil layer vibration monitoring apparatus according to claim 1, characterized by One end of the operating extension is detachably connected to the adapter, and the length of the operating extension is greater than the depth of the drill hole.

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