Coal field seismic exploration soil hole backfill quality detection device

Abstract

The invention 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 slidably installed on the inner side of the bottom of the probe rod, 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 device, 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] The present invention belongs to the technical field of coalfield seismic exploration, and particularly relates to a device for detecting the backfill quality of soil holes in coalfield seismic exploration. Background Art

[0002] In coalfield seismic exploration, it is necessary to first excavate deep holes on the designated soil ground, then lower the explosive source to the bottom of the deep hole, and finally, the soil holes need to be backfilled and compacted strictly in accordance with the construction requirements. During the actual construction process, it is also necessary to detect the backfill quality of the soil holes.

[0003] After retrieval and combined with the actual work experience of coalfield seismic exploration, the current detection of the backfill quality of soil holes mainly relies on manual experience judgment, lacking quantitative standards. The soil holes are prone to being filled loosely, which will cause energy leakage and affect the quality of seismic wave signals. Moreover, existing detection methods, such as using ground penetrating radar for detection, not only have high costs but are also not suitable for field operations. Therefore, it is urgent to improve the existing device for detecting the backfill quality of soil holes in coalfield seismic exploration and provide a device for detecting the backfill quality of soil holes in coalfield seismic exploration. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for detecting the backfill quality of soil holes in coalfield seismic exploration with reasonable design, simple structure, fast detection speed and convenient operation, aiming to solve the problems existing in the prior art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A device for detecting the backfill quality of soil holes in coalfield seismic exploration, which includes a probe rod and a handle assembly detachably installed at the top of the probe rod. An activity column is slidably installed inside the bottom of the probe rod. The top end of the activity column is fixedly installed with a pressure sensor, and the other end of the pressure sensor is fixedly installed with the probe rod. The bottom end of the activity column is installed with a probe. A central processor with an input end electrically connected to the pressure sensor is arranged inside the probe rod, and the output end of the central processor is wirelessly connected to a handheld terminal.

[0006] As a preferred embodiment, connecting parts are symmetrically arranged on the outer wall of the bottom end of the activity column, and the connecting parts are fixed to the probe below through bolts.

[0007] As a preferred embodiment, the central processor is connected to a storage battery arranged inside the probe rod. A charging slot electrically connected to the storage battery is opened on the outer wall of the left side of the middle part of the probe rod. A sealing piece is arranged inside the charging slot. The sealing piece is made of waterproof rubber and one end of it is adhesively fixed to the inner wall of the charging slot.

[0008] As a preferred embodiment, the central processing unit and the storage battery are both arranged in a cavity, and the cavity is opened in the probe rod.

[0009] As a preferred embodiment, the central processing unit includes a data processing module, a signal conversion module, and a wireless communication module.

[0010] As a preferred embodiment, a docking stud for connecting a handle assembly is fixedly installed at the top of the probe rod, and distance scale lines are provided on the outer wall of the probe rod.

[0011] As a preferred embodiment, the handle assembly includes a docking pipe, a threaded hole, a groove, a handle, and a magnetic attraction block. A threaded hole for connecting with the docking stud is opened at the bottom of the docking pipe. A groove is opened in the middle of the top end of the docking pipe. Handles are rotatably installed symmetrically left and right in the groove. Magnetic attraction blocks are fixedly embedded on the outer walls of the mutually approaching ends of the two handles.

[0012] As a preferred embodiment, the magnetic poles of the upper end faces of the two magnetic attraction blocks are opposite, and the rotation range of the handle is 0 - 90°.

[0013] As a preferred embodiment, the probe head is a conical structure, and a plurality of annular resistance grooves are equidistantly arranged on the outer wall of the probe head in the vertical direction.

[0014] As a preferred embodiment, it further includes a scraper for cleaning the soil in the resistance grooves, and a plurality of convex structures matching the resistance grooves are provided on one side of the scraper.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In the solution of the present invention: Control the probe rod to press down to make the probe head with a conical structure drill into the soil hole to backfill the soil. The multiple resistance grooves on the surface of the probe head are convenient for enhancing the recognition sensitivity of loose soil masses. The distance scale lines on the surface of the probe rod are convenient for observing the depth of drilling into the soil. When the probe head drills into the soil, the pressure sensor can detect and record pressure data, and the central processing unit processes the signal and wirelessly transmits it to the handheld terminal. The handheld terminal generates a resistance curve according to the pressure data fed back multiple times. If the resistance value ≥ 5 kN and the resistance curve is stable, it is determined that the soil hole backfill is qualified. If the resistance curve shows a sudden drop or large fluctuation, the soil hole backfill is unqualified; Compared with the existing equipment, the present device can realize the rapid detection of the quality of soil hole backfill. The average detection time for the quality of each soil hole backfill is one minute. Moreover, the present device is small in volume, simple in structure, easy to operate, low in manufacturing cost, light in weight, convenient to carry, suitable for large-scale field exploration operations, high in detection efficiency, and more practical. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the attached drawings required for the description of the embodiments or the prior art. The following is an explanation of the attached drawings: Figure 1 Schematic front view of the three-dimensional structure of the present invention; Figure 2 Schematic front view of the sounding rod and the docking stud of the present invention; Figure 3 Schematic front view of the overall cross-section structure of the handle assembly of the present invention; Figure 4 Schematic front view of the cross-section of the sounding rod and the movable column of the present invention; Figure 5 Schematic three-dimensional structure of the scraper of the present invention; Figure 6 Schematic diagram of the operation of the central processing unit of the present invention; Figure 7 Schematic front view of the structure when the handle of the present invention is retracted;

[0017] In the figure: 1, sounding rod; 2, handle assembly; 21, docking pipe; 22, threaded hole; 23, groove; 24, handle; 25, magnetic attraction block; 3, docking stud; 4, charging slot; 5, sealing sheet; 6, movable column; 7, pressure sensor; 8, central processing unit; 9, storage battery; 10, cavity; 11, probe; 12, connecting part; 13, bolt; 14, resistance groove; 15, scraper; 16, distance scale line. Detailed implementation manners

[0018] The following described embodiments are only a part of the embodiments of the present invention, and do not represent all embodiments consistent with the present invention. Now, in conjunction with the attached drawings, the exemplary embodiments are described as follows: As Figure 1-7 shown, the device for detecting the backfilling quality of soil holes in coalfield seismic exploration of the present invention includes a sounding rod 1 and a handle assembly 2 detachably installed at the top of the sounding rod 1. A movable column 6 is slidably installed inside the bottom of the sounding 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 with the sounding rod 1. A probe 11 is installed at the bottom end of the movable column 6. A central processing unit 8 with an input end electrically connected to the pressure sensor 7 is arranged inside the sounding rod 1. The output end of the central processing unit 8 is wirelessly connected to a handheld terminal.

[0019] On the basis of the above structure, connecting parts 12 are symmetrically arranged on the outer wall of the bottom end of the movable column 6. The connecting parts 12 are fixed to the lower probe 11 through bolts 13.

[0020] In this embodiment, the arrangement of the connecting part 12 and the bolt 13 facilitates the quick disassembly and assembly of the probe 11, and it is convenient to remove the probe 11 for cleaning and storage.

[0021] On the basis of the above structure, the central processing unit 8 is connected to the storage battery 9 arranged inside the probe rod 1. A charging slot 4 electrically connected to the storage battery 9 is provided on the outer wall of the left side of the middle part of the probe rod 1. A sealing piece 5 is arranged in the charging slot 4. The sealing piece 5 is made of waterproof rubber and one end of it is adhesively fixed to the inner wall of the charging slot 4.

[0022] In this embodiment, the charging slot 4 facilitates charging the storage battery 9, and the sealing piece 5 made of waterproof rubber facilitates sealing the charging slot 4 when it is idle.

[0023] On the basis of the above structure, both the central processing unit 8 and the storage battery 9 are arranged in the cavity 10, and the cavity 10 is opened in the probe rod 1.

[0024] On the basis of the above structure, the central processing unit 8 includes a data processing module, a signal conversion module and a wireless communication module.

[0025] In this embodiment, the cavity 10 opened inside the probe rod 1 facilitates the built-in installation of the central processing unit 8 and the storage battery 9. The data processing module in the central processing unit 8 converts the pressure change into an electrical signal for output, and the signal conversion module can convert the electrical signal into a radio wave signal. Finally, the wireless communication module transmits the radio wave signal to the handheld terminal, which is convenient for the staff to view.

[0026] On the basis of the above structure, a docking stud 3 for connecting the handle assembly 2 is fixedly installed at the top of the probe rod 1, and distance scale lines 16 are provided on the outer wall of the probe rod 1.

[0027] In this embodiment, the distance scale lines 16 on the surface of the probe rod 1 facilitate observing the depth of the probe rod 1 drilled into the soil.

[0028] On the basis of the above structure, the handle assembly 2 includes a docking pipe 21, a threaded hole 22, a groove 23, a handle 24 and a magnetic attraction block 25. A threaded hole 22 for connecting with the docking stud 3 is opened at the bottom of the docking pipe 21. A groove 23 is opened in the middle of the top end of the docking pipe 21. Handles 24 are rotatably installed symmetrically left and right in the groove 23, and magnetic attraction blocks 25 are embedded and fixed on the outer walls of the mutually approaching ends of the two handles 24.

[0029] In this embodiment, the arrangement of the two handles 24 facilitates applying force to drill the probe 11 into the soil, and the arrangement of the threaded hole 22 facilitates the docking installation between the docking pipe 21 and the docking stud 3, and is convenient for the installation and disassembly of the handle assembly 2 at the upper end of the probe rod 1.

[0030] Based on the above structure, the magnetic poles on the upper end faces of the two magnetic attraction blocks 25 are opposite, and the rotation range of the handle 24 is 0 - 90°.

[0031] In this embodiment, after the handle assembly 2 is disassembled, the two handles 24 can be rotated to the vertical state, and then the adsorption effect of the two magnetic attraction blocks 25 is utilized to facilitate the positioning of the handle 24.

[0032] Based on the above structure, both the pressure sensor 7 and the central processing unit 8 are electrically connected to the storage battery 9.

[0033] In this embodiment, during the process of pressing down the probe rod 1 to control the probe head 11 to drill into the soil, the pressure sensor 7 can be used to detect and record the pressure data.

[0034] Based on the above structure, the probe head 11 is a conical structure, and a plurality of annular resistance grooves 14 are equidistantly arranged on the outer wall of the probe head 11 in the vertical direction.

[0035] In this embodiment, the use of the plurality of resistance grooves 14 on the surface of the probe head 11 facilitates enhancing the recognition sensitivity of the probe head 11 to loose soil masses.

[0036] Based on the above structure, a scraper 15 for cleaning the soil in the resistance grooves 14 is further included, and a plurality of protruding structures matching the resistance grooves 14 are provided on one side of the scraper 15.

[0037] In this embodiment, the arrangement of the scraper 15 facilitates scraping and cleaning the residual soil in the resistance grooves 14 on the surface of the probe head 11 after the quality inspection of the soil hole backfill, so as to avoid affecting subsequent detection operations.

[0038] The working principle of the present invention is as follows: During use, first, the docking pipe 21 is docked and installed with the docking stud 3 through the threaded hole 22 opened inside its bottom end, the handle assembly 2 is installed above the probe rod 1, then the two handles 24 are rotated and opened to a horizontal state, and then the handle 24 is held and the probe rod 1 and the probe head 11 are forcefully inserted downward into the soil hole backfill soil. The plurality of resistance grooves 14 on the surface of the probe head 11 facilitate enhancing the recognition sensitivity to loose soil masses. During the process of the probe head 11 drilling into the soil, the pressure sensor 7 can detect and record the pressure data, and the central processing unit 8 processes and converts the signal and wirelessly transmits it 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 ≥ 5 kN and the resistance curve is stable, it is determined that the soil hole backfill is qualified; if the resistance curve shows a sudden drop or large fluctuation, it is determined that the soil hole backfill is unqualified. The surface of the probe rod 1 is provided with distance scale lines 16, which can be used to control the insertion depth of the probe rod 1. After the detection of the soil hole backfill quality is completed, the probe rod 1 and the probe head 11 can be pulled out. The probe head 11 can be detached from the connecting part 12 through bolts 13, which facilitates the convenient cleaning of the residual soil in the surface resistance groove 14 of the probe head 11 by using the scraper 15, avoiding affecting subsequent detection operations. The charging groove 4 opened on the outer wall of the probe rod 1 can charge the storage battery 9, and the charging groove 4 can be sealed by a sealing piece 5 made of waterproof rubber material when it is idle; Compared with the existing technical means, the device of the present invention is small in volume, light in weight, easy to carry and operate, can realize the rapid detection of the soil hole backfill quality, the average detection time for each soil hole backfill quality is one minute, the operation efficiency is high, the work burden of field operation can be reduced, it is suitable for large-scale exploration operations in the wild, and has strong practicability; It should be particularly noted that the circuit layout and the specific working principle among the charging groove 4, the pressure sensor 7, the central processing unit 8 and the storage battery 9 are all existing mature technical means, and are not the key improvements and innovation directions of this case. The handheld terminal is an existing handheld data receiving and displaying device, and is also a direct reference to existing products, so it will not be elaborated herein.

[0039] The above is only the preferred specific embodiment of the present invention, and is not intended to limit the protection scope of the present invention; all equivalent changes, modifications, substitutions and variations made by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments shall be within the protection scope determined by the claims.

Claims

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

2. A coalfield seismic exploration soil hole backfill quality detection device according to claim 1, characterized in that: A connecting portion (12) is symmetrically provided on the outer wall of the bottom end of the movable column (6), and the connecting portion (12) is fixed to the probe (11) below by means of bolts (13).

3. A coalfield seismic exploration soil hole backfill quality detection device according to claim 2, characterized in that: The central processing unit (8) is connected to a storage battery (9) disposed inside the probe (1); a charging slot (4) electrically connected to the storage battery (9) is provided on the left outer wall of the middle portion of the probe (1); a sealing sheet (5) is provided in the charging slot (4); the sealing sheet (5) is made of waterproof rubber material and one end of the sealing sheet (5) is bonded and fixed to the inner wall of the charging slot (4).

4. A coalfield seismic exploration soil hole backfill quality detection device according to claim 3, characterized in that: The central processing unit (8) and the storage battery (9) are both arranged in a cavity (10), and the cavity (10) is opened in the probe rod (1).

5. A coalfield seismic exploration soil hole backfill quality detection device according to claim 4, characterized in that: The central processor (8) comprises a data processing module, a signal conversion module and a wireless communication module.

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

7. A coalfield seismic exploration soil hole backfill quality detection device according to claim 6, characterized in that: The handle assembly (2) comprises a butt joint tube (21), a threaded hole (22), a groove (23), a handle (24) and a magnetic block (25). The bottom of the butt joint tube (21) is provided with a threaded hole (22) for connecting with the butt joint stud (3). The middle part of the top of the butt joint tube (21) is provided with a groove (23). The handle (24) is symmetrically mounted in the groove (23) for rotation. The outer walls of the two handles (24) at the ends close to each other are both embedded with a magnetic block (25).

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

9. A coalfield seismic exploration soil hole backfill quality detection device according to claim 8, characterized in that: The probe (11) is a conical structure, and the outer wall of the probe (11) is provided with a plurality of ring-shaped resistance grooves (14) at equal intervals along the vertical direction.

10. A coalfield seismic exploration soil hole backfill quality detection device according to claim 9, characterized in that: It also includes a scraper (15) for cleaning the soil in the resistance groove (14); one side of the scraper (15) is provided with a plurality of protruding structures matching the resistance groove (14).

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