Coal field seismic exploration soil hole backfill quality detection device

Abstract

The utility model belongs to the technical field of coal field seismic exploration, and particularly relates to a coal field seismic exploration soil hole backfill quality detection device which comprises a probe rod and a handle assembly detachably installed at the top end of the probe rod, a movable column is installed on the inner side of the bottom of the probe rod in a sliding mode, and a pressure sensor is fixedly installed at the top end of the movable column. The other end of the pressure sensor is fixedly installed with a probe rod, a probe is installed at the bottom end of the movable column, a central processing unit with the input end electrically connected with the pressure sensor is arranged in the probe rod, and the output end of the central processing unit is wirelessly connected with a handheld terminal. According to the utility model, the backfill quality can be rapidly detected, the average detection time of the backfill quality of each soil hole is one minute, and the device is small in size, simple in structure, easy to operate, low in manufacturing cost, light in weight, convenient to carry, suitable for field large-scale exploration operation, high in detection efficiency and higher in practicability.

Description

Technical Field

[0001] This utility model belongs to the field of coalfield seismic exploration technology, and in particular relates to a coalfield seismic exploration soil hole backfill quality detection device. Background Technology

[0002] In seismic exploration of coalfields, it is necessary to first excavate deep holes on the designated soil surface, then lower the explosive source to the bottom of the deep holes, and finally backfill and compact the soil in the holes strictly according to construction requirements. During actual construction, the quality of the backfilling of the soil holes also needs to be inspected.

[0003] Based on research and practical experience in coalfield seismic exploration, current borehole backfill quality inspection relies primarily on manual judgment, lacking quantitative standards. This leads to incomplete backfilling, causing energy leakage and affecting seismic signal quality. Furthermore, existing inspection methods, such as ground-penetrating radar, are not only costly but also unsuitable for field operations. Therefore, there is an urgent need to improve existing coalfield seismic exploration borehole backfill quality inspection devices and provide a suitable new device. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a coalfield seismic exploration soil hole backfill quality testing device that is reasonably designed, simple in structure, fast in detection speed, and easy to operate, thereby solving the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A coalfield seismic exploration borehole backfill quality testing device includes a probe rod and a detachable handle assembly mounted on the top of the probe rod. A movable column is slidably mounted on the inner bottom of the probe rod. A pressure sensor is fixedly mounted on the top of the movable column, and the other end of the pressure sensor is fixedly mounted to the probe rod. A probe is mounted on the bottom of the movable column. A central processing unit is provided inside the probe rod, with its input end electrically connected to the pressure sensor. The output end of the central processing unit is wirelessly connected to a handheld terminal.

[0007] In a preferred embodiment, the bottom outer wall of the movable column is symmetrically provided with connecting parts, which are fixed to the probe below by bolts.

[0008] In a preferred embodiment, the central processing unit is connected to a battery installed inside the probe rod. A charging slot electrically connected to the battery is provided on the outer wall of the left side of the middle part of the probe rod. A sealing sheet is provided inside the charging slot. The sealing sheet is made of waterproof rubber and one end is bonded and fixed to the inner wall of the charging slot.

[0009] In a preferred embodiment, both the central processing unit and the battery are housed within a cavity, which is located within the probe.

[0010] In a preferred embodiment, the central processing unit includes a data processing module, a signal conversion module, and a wireless communication module.

[0011] In a preferred embodiment, a docking stud for connecting the handle assembly is fixedly installed on the top of the probe rod, and distance scale lines are provided on the outer wall of the probe rod.

[0012] In a preferred embodiment, the handle assembly includes a connecting tube, a threaded hole, a groove, a handle, and a magnetic block. The bottom of the connecting tube has a threaded hole for connecting with a mating stud, and the top center of the connecting tube has a groove. A handle is symmetrically mounted in the groove. Magnetic blocks are embedded and fixed on the outer wall of the two handles that are close to each other.

[0013] In a preferred embodiment, the magnetic poles on the upper surfaces of the two magnetic blocks are opposite, and the rotation range of the handle is 0-90°.

[0014] In a preferred embodiment, the probe has a conical structure, and the outer wall of the probe is provided with multiple annular resistance grooves at equal intervals along the vertical direction.

[0015] In a preferred embodiment, the system also includes a scraper for cleaning the soil in the resistance groove, with a plurality of protruding structures on one side of the scraper that match the resistance groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the solution of this utility model:

[0018] The probe rod is pressed down to allow the conical probe to drill into the backfill soil. Multiple resistance grooves on the probe surface enhance the sensitivity of identifying loose soil. The distance scale on the probe rod surface makes it easy to observe the drilling depth. When the probe drills into the soil, a pressure sensor detects and records pressure data. The signal is processed by the central processor and wirelessly transmitted to a handheld terminal. The handheld terminal generates a resistance curve based on the pressure data from multiple feedbacks. If the resistance value is ≥5kN and the resistance curve is stable, the backfilling of the soil hole is deemed qualified. If the resistance curve drops sharply or fluctuates significantly, the backfilling of the soil hole is deemed unqualified.

[0019] Compared to existing equipment, this device can quickly detect the backfill quality of soil holes, with an average detection time of one minute per soil hole. Moreover, the device is small in size, simple in structure, easy to operate, low in manufacturing cost, lightweight, and portable, making it suitable for large-scale field exploration operations. It has high detection efficiency and greater practicality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings are described as follows:

[0021] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0022] Figure 2 This is a front view schematic diagram of the probe and the connecting stud of this utility model;

[0023] Figure 3 This is a schematic diagram of the overall front cross-sectional structure of the handle assembly of this utility model;

[0024] Figure 4 This is a front view cross-sectional structural diagram of the probe rod and movable column of this utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the scraper of this utility model;

[0026] Figure 6 This is a schematic diagram of the operation of the central processing unit of this utility model;

[0027] Figure 7 This is a front view structural diagram of the handle of this utility model in the retracted state.

[0028] In the picture:

[0029] 1. Probe; 2. Handle assembly; 21. Connecting tube; 22. Threaded hole; 23. Groove; 24. Handle; 25. Magnetic block; 3. Connecting stud; 4. Charging slot; 5. Sealing plate; 6. Moving column; 7. Pressure sensor; 8. Central processing unit; 9. Battery; 10. Cavity; 11. Probe; 12. Connecting part; 13. Bolt; 14. Resistance groove; 15. Scraper; 16. Distance scale line. Detailed Implementation

[0030] The embodiments described below are merely some embodiments of the present invention and do not represent all embodiments consistent with the present invention. Exemplary embodiments will now be described with reference to the accompanying drawings:

[0031] like Figure 1-7As shown, the present invention relates to a coalfield seismic exploration soil hole backfill quality detection device, which includes a probe rod 1 and a handle assembly 2 detachably installed at the top of the probe rod 1. A movable column 6 is slidably installed on the inner side of the bottom of the probe rod 1. A pressure sensor 7 is fixedly installed at the top of the movable column 6. The other end of the pressure sensor 7 is fixedly installed to the probe rod 1. A probe 11 is installed at the bottom of the movable column 6. A central processing unit 8 is provided inside the probe rod 1, with its input end electrically connected to the pressure sensor 7. The output end of the central processing unit 8 is wirelessly connected to a handheld terminal.

[0032] Based on the above structure, the bottom outer wall of the movable column 6 is symmetrically provided with connecting parts 12, which are fixed to the probe 11 below by bolts 13.

[0033] In this embodiment, the connection part 12 and the bolt 13 facilitate quick assembly and disassembly of the probe 11, and make it easy to remove, clean and store the probe 11.

[0034] Based on the above structure, the central processing unit 8 is connected to the battery 9 installed inside the probe 1. A charging slot 4 electrically connected to the battery 9 is opened on the outer wall of the left side of the middle part of the probe 1. A sealing sheet 5 is provided in the charging slot 4. The sealing sheet 5 is made of waterproof rubber and one end of it is bonded and fixed to the inner wall of the charging slot 4.

[0035] In this embodiment, the charging slot 4 is used to facilitate charging of the battery 9, and the waterproof rubber sealing sheet 5 is used to seal the charging slot 4 when it is not in use.

[0036] Based on the above structure, the central processing unit 8 and the battery 9 are both located in the cavity 10, which is located inside the probe 1.

[0037] Based on the above structure, the central processing unit 8 includes a data processing module, a signal conversion module, and a wireless communication module.

[0038] In this embodiment, the cavity 10 inside the probe 1 facilitates the built-in installation of the central processing unit 8 and the battery 9. The data processing module in the central processing unit 8 converts the pressure change into an electrical signal output, and the signal conversion module converts the electrical signal into a radio wave signal. Finally, the radio wave signal is transmitted to a handheld terminal through the wireless communication module for easy viewing by staff.

[0039] Based on the above structure, a docking stud 3 for connecting the handle assembly 2 is fixedly installed on the top of the probe rod 1, and a distance scale line 16 is provided on the outer wall of the probe rod 1.

[0040] In this embodiment, the distance scale line 16 on the surface of the probe rod 1 is used to facilitate observation of the depth to which the probe rod 1 penetrates the soil.

[0041] Based on the above structure, the handle assembly 2 includes a connecting tube 21, a threaded hole 22, a groove 23, a handle 24, and a magnetic block 25. The bottom of the connecting tube 21 has a threaded hole 22 for connecting with the mating stud 3. The top center of the connecting tube 21 has a groove 23. The handle 24 is symmetrically installed in the groove 23. The outer wall of the two handles 24 that are close to each other is embedded with a magnetic block 25.

[0042] In this embodiment, the two handles 24 facilitate the application of force to drill the probe 11 into the soil, and the threaded hole 22 facilitates the docking and installation between the connecting pipe 21 and the docking stud 3, and facilitates the installation and removal of the handle assembly 2 on the upper end of the probe rod 1.

[0043] Based on the above structure, the magnetic poles on the upper surfaces of the two magnetic blocks 25 are opposite, and the rotation range of the handle 24 is 0-90°.

[0044] In this embodiment, after the handle assembly 2 is disassembled, both handles 24 can be rotated to a vertical position, and the handles 24 can be easily positioned by the attraction of the two magnetic blocks 25.

[0045] Based on the above structure, both the pressure sensor 7 and the central processing unit 8 are electrically connected to the battery 9.

[0046] In this embodiment, during the process of the probe 11 being drilled into the soil by the pressure rod 1, the pressure sensor 7 can detect and record pressure data.

[0047] Based on the above structure, the probe 11 has a conical structure, and the outer wall of the probe 11 has multiple annular resistance grooves 14 equidistantly opened in the vertical direction.

[0048] In this embodiment, multiple resistance grooves 14 on the surface of the probe 11 are used to enhance the sensitivity of the probe 11 in identifying loose soil.

[0049] Based on the above structure, a scraper 15 for cleaning the soil in the resistance groove 14 is also included. One side of the scraper 15 is provided with a plurality of protruding structures that match the resistance groove 14.

[0050] In this embodiment, the scraper 15 is used to facilitate the scraping and cleaning of residual soil in the resistance groove 14 on the probe 11 surface after the soil hole backfill quality test, so as to avoid affecting subsequent testing operations.

[0051] The working principle of this utility model is as follows:

[0052] In use, firstly, the connecting pipe 21 is connected to the connecting stud 3 through the threaded hole 22 inside its bottom end. Then, the handle assembly 2 is installed above the probe rod 1. Next, the two handles 24 are rotated open to a horizontal position. Then, the handles 24 are held and the probe rod 1 and probe 11 are forcefully inserted downwards into the backfill soil of the soil hole. The multiple resistance grooves 14 on the surface of the probe 11 help to enhance the sensitivity of identifying loose soil. During the process of the probe 11 drilling into the soil, the pressure sensor 7 can detect and record pressure data. The signal is processed and converted by the central processor 8 and transmitted wirelessly to the handheld terminal of the staff. The handheld terminal generates a resistance curve based on the pressure data fed back multiple times. If the resistance value is ≥5kN and the resistance curve is stable, the soil hole backfill is deemed qualified. If the resistance curve drops sharply or fluctuates greatly, the soil hole backfill is deemed unqualified.

[0053] The probe rod 1 has a distance scale line 16 on its surface, which can be used to control the insertion depth of the probe rod 1. After the soil hole backfill quality test is completed, the probe rod 1 and the probe 11 can be pulled out. The probe 11 can be separated from the connecting part 12 by bolt 13, so that the residual soil in the resistance groove 14 on the surface of the probe 11 can be easily cleaned by scraper 15, so as to avoid affecting subsequent testing operations. The charging slot 4 opened on the outer wall of the probe rod 1 can charge the battery 9, and the charging slot 4 can be sealed by a waterproof rubber sealing sheet 5 when idle.

[0054] Compared with existing technologies, this device is small in size, light in weight, easy to carry and operate, and can quickly detect the backfill quality of soil holes. The average detection time for the backfill quality of each soil hole is one minute, which is highly efficient and can reduce the workload of field operations. It is suitable for large-scale field exploration operations and has strong practicality.

[0055] It should be noted that the circuit layout and working principle between the charging slot 4, pressure sensor 7, central processing unit 8 and battery 9 are all existing mature technologies and are not the key improvement and innovation directions of this case. The handheld terminal is an existing handheld data receiving display and is a direct reference to existing products, so it will not be described in detail.

[0056] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any equivalent changes, modifications, substitutions, and variations made by those skilled in the art based on the concept of this utility model and on the basis of existing technology through logical analysis, reasoning, or limited experiments shall be within the scope of protection defined by the claims.

Claims

1. A coal field seismic exploration soil backfill quality detection device, characterized in that: The device includes a probe (1) and a handle assembly (2) that is detachably mounted on the top of the probe (1). A movable column (6) is slidably mounted on the inner side of the bottom of the probe (1). A pressure sensor (7) is fixedly mounted on the top of the movable column (6). The other end of the pressure sensor (7) is fixedly mounted to the probe (1). A probe (11) is mounted on the bottom of the movable column (6). A central processing unit (8) is provided inside the probe (1) with its input end electrically connected to the pressure sensor (7). The output end of the central processing unit (8) is wirelessly connected to a handheld terminal.

2. The device for detecting the quality of backfilling of soil in coalfield seismic exploration according to claim 1, characterized in that: The bottom outer wall of the movable column (6) is symmetrically provided with connecting parts (12), and the connecting parts (12) are fixed to the probe (11) below by bolts (13).

3. The device for detecting the quality of backfilling of soil in coalfield seismic exploration according to claim 2, characterized in that: The central processing unit (8) is connected to the battery (9) inside the probe (1). A charging slot (4) electrically connected to the battery (9) is provided on the outer wall of the left side of the middle part of the probe (1). A sealing sheet (5) is provided in the charging slot (4). The sealing sheet (5) is made of waterproof rubber and one end of it is bonded and fixed to the inner wall of the charging slot (4).

4. The device for detecting the quality of backfilling of soil in coalfield seismic exploration according to claim 3, characterized in that: The central processing unit (8) and the battery (9) are both located in the cavity (10), which is located inside the probe (1).

5. The device for detecting the quality of backfilling of soil in coalfield seismic exploration according to claim 4, characterized in that: The central processing unit (8) includes a data processing module, a signal conversion module and a wireless communication module.

6. The coalfield seismic exploration soil backfill quality detection device according to claim 5, characterized in that: The top of the probe (1) is fixedly fitted with a docking stud (3) for connecting the handle assembly (2), and the outer wall of the probe (1) is provided with distance scale lines (16).

7. The device for detecting the quality of backfilling of soil in coalfield seismic exploration according to claim 6, characterized in that: The handle assembly (2) includes a connecting tube (21), a threaded hole (22), a groove (23), a handle (24), and a magnetic block (25). The bottom of the connecting tube (21) is provided with a threaded hole (22) for connecting with the docking stud (3). The top center of the connecting tube (21) is provided with a groove (23). The handle (24) is symmetrically rotated and installed in the groove (23). The two handles (24) are both embedded and fixed with magnetic blocks (25) on the outer wall of the end that is close to each other.

8. The device for detecting the quality of backfilling of soil in coalfield seismic exploration according to claim 7, characterized in that: The magnetic poles on the upper surfaces of the two magnetic blocks (25) are opposite, and the rotation range of the handle (24) is 0-90°.

9. The device for detecting the quality of backfilling of soil in coalfield seismic exploration according to claim 8, characterized in that: The probe (11) has a conical structure, and the outer wall of the probe (11) is provided with multiple annular resistance grooves (14) at equal intervals along the vertical direction.

10. The device for detecting the quality of backfilling of soil in coalfield seismic exploration according to claim 9, characterized in that: It also includes a scraper (15) for cleaning the soil in the resistance groove (14), with a plurality of protruding structures on one side of the scraper (15) matching the resistance groove (14).

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