A drilling water level measuring device for geological exploration
By designing a drilling water level measurement equipment for geological exploration, the combination of lifting control mechanism and moving detection mechanism is used to solve the problem of shaking and collision when the detection instrument falls in the prior art, and a stable and reliable water level measurement is achieved.
Patent Information
- Application Number
- CN202110367249.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-04-06
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2041-04-06
AI Technical Summary
The existing drilling water level measurement methods are prone to shaking during the detection instrument's whereabouts, causing the detector to collide with the hole wall, unable to reach the water surface in the hole, and the operation is complicated and the data reliability is poor.
A drilling water level measurement equipment for geological exploration is designed, including a frame, an electrical clock, a signal receiver, an auxiliary fixing mechanism, an elevator control mechanism and a mobile detection mechanism. Through the auxiliary fixing mechanism fixing device, the lifting control mechanism drives the movement detection mechanism to steadily descend to ensure that the electric clock steadily drops to the water surface in the hole under the action of gravity.
The stability of the detection instrument during the descent process is achieved, collision with the hole wall is avoided, operation is simplified, and the reliability of the measurement data is improved.
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Figure CN115163047B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of geological exploration, and in particular to a borehole water level measuring device for geological exploration. Background Art
[0002] Drilling is the most widely used means of geological exploration. Drilling is the use of deep drilling mechanical engineering technology to exploit underground or seabed natural resources, or to take the actual profile of the stratum, extract physical samples, provide experiments to obtain relevant data, etc. During the drilling construction process, simple hydrological observations are required to understand the thickness, quantity, distribution pattern and properties of the aquifer in the work area, as supplementary information for special hydrological boreholes, and obtain necessary hydrogeological data for engineering design. Among them, borehole water level measurement is a major part of hydrological observation. The existing borehole water level measurement methods generally include clock observation There are three methods: measuring water level and observing water level with electric water level meter. Among them, the water level observation method with a measuring bell refers to hanging a measuring bell on a special hydrological rope, using gravity to lower the measuring bell into the hole. When the measuring bell contacts the liquid surface in the hole, a sound is made. At this time, the value of the measuring rope at the fixed point of the hole mouth is read, and this value is the water level depth. The water level observation method with an electric water level meter refers to using gravity to lower an electric measuring bell into the hole. When the measuring bell contacts the liquid surface, the float rises and contacts the contact point. At this time, the circuit is connected, and the ammeter pointer deflects or the light bulb lights up. The value read on the wire is the water level depth of the borehole.
[0003] The above water level measurements mostly use gravity to place the relevant detection instruments into the hole. During the falling process of the detection instrument, it is easy to shake, causing the detector to collide directly with the hole wall, resulting in the detection instrument being unable to reach the water surface in the hole. The detection instrument may even be damaged due to the collision with the hole wall during the measurement process. At the same time, the lower part of the traditional detector is mostly completed manually, the operation is relatively complicated, and the operating experience requirements of the operator are relatively high, and the reliability of the measured data is poor. In view of this, in-depth research was conducted on the above-mentioned problems, and this case was generated.
[0004] Based on the above situation, the present invention proposes a borehole water level measuring device for geological exploration, which can effectively solve the above problems. Summary of the invention
[0005] The purpose of the present invention is to solve the above problems. A borehole water level measuring device for geological exploration is designed to solve the problems raised in the background technology.
[0006] The technical solution of the present invention to achieve the above object is:
[0007] A borehole water level measuring device for geological exploration, comprising a frame, an electric measuring clock and a signal receiver for receiving the electric measuring clock signal, and further comprising:
[0008] The auxiliary fixing mechanism is arranged on the side wall of the frame and is used for erecting the frame at the orifice;
[0009] The lifting control mechanism is arranged on the frame and includes a drive control structure, a connecting shaft with one end connected to the drive control structure, a reel connected to the other end of the connecting shaft, and a limit locking structure for braking the connecting shaft; and
[0010] The mobile detection mechanism is suspended below the frame through a lifting connection component wound around the reel and includes an annular frame, a plurality of threaded adjustment structures arranged circumferentially on the annular frame, an elastic protection structure with one end connected to each threaded adjustment structure, and a spherical support structure connected to the other end of each elastic protection structure; the plurality of spherical support structures can cooperate with the acting force of the outward elastic force of the elastic protection structure and the inward extrusion force of the hole wall in the horizontal direction, so that the mobile detection mechanism steadily moves downward under the action of gravity;
[0011] The electric measuring clock is fixedly arranged at the bottom end of the mobile detection mechanism and can steadily rise or fall following the mobile detection mechanism under the drive of the lifting control mechanism.
[0012] As a preferred technical solution of the present invention, the auxiliary fixing mechanism includes a plurality of adjustable support structures circumferentially arranged on the side wall of the frame. Each adjustable support structure includes a fixed sleeve fixedly arranged at the bottom edge of the frame, a sliding plate slidably sleeved inside the fixed sleeve, and a fastening bolt with one end first passing through the side wall of the fixed sleeve and then extending into a positioning blind hole preset on the side wall of the sliding plate. A plurality of the positioning blind holes are arranged at intervals along the length direction of the sliding plate.
[0013] As a preferred technical solution of the present invention, the drive control structure includes a box body arranged on the frame, a servo motor with a drive end connected to the connecting shaft, a battery pack arranged on one side of the servo motor, and a controller arranged on the upper end face of the box body.
[0014] As a preferred technical solution of the present invention, the limit locking structure includes two fixed seats located on both sides in the width direction of the connecting shaft, two cylinders arranged on the two fixed seats and with piston ends all pointing in the direction of the connecting shaft, and two arc-shaped friction plates arranged on the piston ends of the two cylinders.
[0015] As a preferred technical solution of the present invention, the lifting connection component includes a flexible connection pipe and a wire embedded in the flexible connection pipe. The flexible connection pipe is wound around the reel and one end is connected to the annular frame. One end of the wire is connected to a signal receiver and the other end is connected to the electric measuring clock.
[0016] As a preferred technical solution of the present invention, the screw adjustment structure includes a mounting seat disposed within the annular frame, a screw sleeve fixedly connected to the mounting seat, and a screw post spirally inserted into the screw sleeve.
[0017] As a preferred technical solution of the present invention, the elastic protection structure includes a compression spring, a mounting plate, and a telescopic column; one end of the telescopic column is fixedly connected to the screw post, and the other end is fixedly connected to the mounting plate; the compression spring is sleeved outside the telescopic column, and its two ends respectively abut against the screw post and the mounting plate.
[0018] As a preferred technical solution of the present invention, the spherical support structure includes a connecting seat disposed on the side wall of the mounting plate, a fixed block disposed on the side wall of the connecting seat and provided with a spherical groove, and a spherical head rotatably connected to the spherical groove.
[0019] As a preferred technical solution of the present invention, a counterweight is disposed within the annular frame.
[0020] As a preferred technical solution of the present invention, scale lines are provided on the outer side wall surface of the flexible connecting pipe, and numerical values are marked on the scale lines.
[0021] Compared with the prior art, the present invention has the following advantages and beneficial effects:
[0022] The geological exploration borehole water level measuring device manufactured by using the technical solution of the present invention is provided with an auxiliary fixing mechanism on the side of the frame. Before measurement, the whole device is fixed on the hole pipe through the auxiliary fixing mechanism. A lifting control mechanism is provided on the frame, and one end of the lifting control mechanism is connected with a moving detection mechanism. The side of the moving detection mechanism is adjusted so that the side of the moving detection mechanism is in sliding contact with the side of the hole pipe. The restriction on the moving detection mechanism is released through the lifting control mechanism; under the action of gravity, the moving detection mechanism descends and enters the hole pipe. During the descent of the moving detection mechanism, it remains stable and does not collide. The structure is simple and has good stability; it solves the problems in the prior art that in the water level measurement work, most of the relevant detection instruments are put into the hole by gravity. During the falling process of the detection instrument, it is easy to shake, causing the detector to directly collide with the hole wall, resulting in the detection instrument being unable to reach the water surface in the hole, and even possibly damaging the detection instrument due to the collision with the hole wall during the measurement process. At the same time, most of the traditional detectors are manually operated at the bottom, the operation is relatively complex, and the operation experience requirements for the operator are relatively high, and the reliability of the measured data is relatively poor. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a front view structural schematic diagram of a geological exploration borehole water level measuring device described in the present invention.
[0024] Figure 2It is a schematic front sectional view of the working state of a borehole water level measuring device for geological exploration according to the present invention.
[0025] Figure 3 For a borehole water level measuring device for geological exploration according to the present invention Figure 2 is a schematic top view.
[0026] Figure 4 It is a schematic front sectional view of the position of the annular frame of a borehole water level measuring device for geological exploration according to the present invention.
[0027] Figure 5 It is a schematic top sectional view of the A-A position of a borehole water level measuring device for geological exploration according to the present invention.
[0028] Figure 6 It is a schematic enlarged partial view of the a position of a borehole water level measuring device for geological exploration according to the present invention.
[0029] Figure 7 It is a schematic enlarged partial view of the b position of a borehole water level measuring device for geological exploration according to the present invention.
[0030] In the figure: 1 - frame; 2 - electric clock; 3 - signal receiver; 4 - connecting shaft; 5 - reel; 6 - annular frame; 7 - fixed sleeve; 8 - sliding plate; 9 - fastening bolt; 10 - box body; 11 - servo motor; 12 - battery pack; 13 - controller; 14 - fixed seat; 15 - cylinder; 16 - arc friction plate; 17 - flexible connecting pipe; 18 - wire; 19 - mounting seat; 20 - threaded sleeve; 21 - threaded column; 22 - compression spring; 23 - mounting plate; 24 - telescopic column; 25 - connecting seat; 26 - fixed block; 27 - spherical head; 28 - counterweight. Detailed implementation mode
[0031] The present invention will be specifically described below with reference to the accompanying drawings. As Figures 1-7 shown, those skilled in the art connect all the electrical components in this case to their adapted power sources through wires, and should select a suitable controller according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of operation of each electrical component in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and will not explain the electrical control.
[0032] Embodiment: As shown in the appended Figures 1-7It can be seen that this solution includes a frame 1, an electrical measuring clock 2, and a signal receiver 3. Their positional and connection relationships are as follows. An auxiliary fixing mechanism is provided on the side wall of the frame 1, and a lifting control mechanism is provided on the frame 1. One end of the lifting control mechanism is connected to a moving detection mechanism. The electrical measuring clock 2 is arranged at the lower end of the moving detection mechanism, and the signal receiver 3 is arranged on the frame 1 and connected to the electrical measuring clock 2. The above-mentioned auxiliary fixing mechanism includes four adjustable support structures with the same structure, and the four adjustable support structures are respectively arranged on the four side walls of the frame 1. Among them, the lifting control mechanism includes: a drive control structure, a connecting shaft 4, a limit locking structure, and a reel 5. Their positional and connection relationships are as follows. The drive control structure is arranged on the frame 1. One end of the connecting shaft 4 is connected to the drive end of the drive control structure. The limit locking structure is sleeved outside the connecting shaft 4, and the reel 5 is fixedly sleeved on the connecting shaft 4. A lifting connection component is wound around the reel 5. The above-mentioned moving detection mechanism includes: an annular frame 6, a thread adjustment structure, an elastic protection structure, and a spherical support structure. The annular frame 6 is arranged at the lower end of the lifting connection component. The thread adjustment structure is arranged inside the annular frame 6 and is arranged in an annular array. The elastic protection structure is arranged at one end of the thread adjustment structure, and the spherical support structure is arranged at one end of the elastic protection structure. An auxiliary fixing mechanism is provided on the side of the frame 1. Before measurement, the device as a whole is fixed on the hole pipe through the auxiliary fixing mechanism. A lifting control mechanism is provided on the frame 1. One end of the lifting control mechanism is connected to a moving detection mechanism. The side of the moving detection mechanism is adjusted so that the side of the moving detection mechanism is in sliding contact with the side of the hole pipe. The restriction on the moving detection mechanism is released through the lifting control mechanism. Under the action of gravity, the moving detection mechanism descends and enters the hole pipe. During the descent of the moving detection mechanism, it remains stable and does not collide. The structure is simple and the stability is good.
[0033] It should be emphasized that during use, according to the diameter of the hole pipe, the thread adjustment structure on the annular frame 6 is adjusted so that the spherical support structure at one end of the elastic protection structure can fit with the inner wall of the hole pipe. Then, the adjustable support structure is adjusted, and the frame 1 is fixed at the upper opening position of the hole pipe through the adjustable support structure. The limit locking structure's restriction on the connecting shaft 4 is released, and the drive control structure is used to control the rotation of the connecting shaft 4, which in turn drives the rotation of the reel 5, thereby lowering one end of the lifting connection component on the reel 5. Under the action of gravity, the annular frame 6 drives the lifting connection component to move downward synchronously. When it contacts the water surface, the electrical measuring clock 2 sends an electrical signal to the signal receiving module, thereby measuring the drilling water level.
[0034] From the attached instructions Figures 1-3It can be seen that in the specific implementation process, the above-mentioned adjustable support structure includes: a fixed sleeve 7, a sliding plate 8, and a fastening bolt 9. The fixed sleeve is welded to the side wall of the frame 1 and is located at the lower position of the side wall of the frame 1. The sliding plate 8 is slidably inserted into the fixed sleeve 7. A number of positioning blind holes are provided on the side wall of the sliding plate 8. One end of the fastening bolt 9 penetrates through the side wall of the fixed sleeve 7 and extends into the positioning blind hole. During use, according to the pipe diameter size of the hole pipe, the sliding plate 8 is pulled out of the fixed sleeve 7, and the sliding plate 8 is fixed to the fixed sleeve by using the fastening bolt 9. Then, the frame 1 is placed on the hole pipe, so that the sliding plate 8 contacts the upper end surface of the hole pipe, and the frame 1 is supported and fixed.
[0035] It can be seen from the appended drawings of the specification Figures 1-4 It can be seen that in the specific implementation process, the above-mentioned drive control structure includes: a box body 10, a servo motor 11, a battery pack 12, and a controller 13. Their positional relationship and connection relationship are as follows: the box body 10 is arranged on the frame 1. The servo motor 11 is arranged inside the box body 10, and its driving end extends outside the box body 10 and is connected to the connecting shaft 4. The battery pack 12 is arranged on one side of the servo motor 11. The controller 13 is arranged on the upper end surface of the box body 10. The above-mentioned limit locking structure includes: two fixed seats 14, two cylinders 15, and two arc-shaped friction plates 16. The two fixed seats 14 are respectively arranged on the frame 1 and are located on both sides of the connecting shaft 4. The two cylinders 15 are symmetrically arranged on the two fixed seats 14, and their piston ends point in the direction of the connecting shaft 4. The two arc-shaped friction plates are arranged on the piston ends of the two cylinders 15. Among them, the lifting connection assembly includes: a flexible connection pipe 17 and a wire 18. The wire 18 is embedded in the flexible connection pipe 17. The flexible connection pipe 17 is wound around the reel 5 and one end is connected to the annular frame 6. One end of the wire 18 is connected to the signal receiver 3 and the other end is connected to the electric measuring clock 2. During use, by controlling the expansion and contraction of the piston ends of the cylinders 15 on the fixed seats 14, the control of the arc-shaped friction plates is realized, and then the contact and separation between the arc-shaped friction plates and the outer wall of the connecting shaft 4 are realized, so as to realize the limit locking and unlocking of the connecting shaft 4. After the unlocking operation, the servo motor 11 is started, and the driving end of the servo motor 11 is controlled to rotate, so as to drive the connecting shaft 4 to rotate. The rotation of the connecting shaft 4 can drive the reel 5 to rotate, realizing the lowering operation of the flexible connection pipe 17 on the reel 5, and further realizing the lowering operation of the annular frame 6. Similarly, by controlling the reverse rotation of the driving end of the servo motor 11, the flexible connection pipe 17 can be wound onto the reel 5, realizing the lifting operation of the annular frame 6.
[0036] It can be seen from the appended drawings of the specification Figures 1-7It can be seen that in the specific implementation process, the above-mentioned threaded adjustment structure includes: a mounting seat 19, a threaded sleeve 20, and a threaded column 21. The mounting seat 19 is welded inside the annular frame 6. The threaded sleeve 20 is fixedly connected to the mounting seat 19. The threaded column 21 is helically inserted into the threaded sleeve 20. The above-mentioned elastic protection structure includes: a compression spring 22, a mounting plate 23, and a telescopic column 24. The compression spring 22 is fixed to one end of the threaded column 21. The mounting plate 23 is arranged at the other end of the compression spring 22. The telescopic column 24 is arranged inside the compression spring 22 and is connected to the threaded column 21 and the mounting plate 23 at both ends respectively. Among them, the spherical support structure: a connecting seat 25, a fixed block 26, and a spherical head 27. The connecting seat 25 is arranged on the side wall of the mounting plate 23. The fixed block 26 is arranged on the side wall of the connecting seat 25. A spherical groove is opened on the side wall of the fixed block 26. The spherical head 27 is rotatably arranged in the spherical groove. During use, according to the inner diameter size of the hole tube, the threaded column 21 is rotated so that the threaded column 21 extends out of the threaded sleeve 20 and the spherical head 27 fits against the inner wall of the hole tube. The spherical head 27 is extruded by an external force and generates a displacement together with the fixed block 26 and the connecting seat 25, thereby extruding the compression spring 22. Through the elastic pushing operation in four directions, the annular frame 6 can be kept in a relatively stable state inside the hole tube, effectively avoiding the annular frame 6 from shaking during the descending and ascending processes, causing bumps to the electric measuring clock 2, and affecting the reliability of the measurement results due to the shaking of the electric measuring clock 2.
[0037] In the specific implementation process, a counterweight 28 is arranged inside the ascending annular frame 6 to improve the descending speed and stability of the annular frame 6.
[0038] In the specific implementation process, scale lines are arranged on the outer side wall of the ascending flexible connecting pipe 17, and numerical values are marked on the scale lines for directly observing the measurement depth, which can be compared with the electronic data measured by the electric measuring clock 2 to improve the stability of the measurement results.
[0039] In summary, for the borehole water level measuring device for geological exploration, an auxiliary fixing mechanism is provided on the side of the frame 1. Before measurement, the whole device is fixed on the hole pipe through the auxiliary fixing mechanism. A lifting control mechanism is provided on the frame 1, and one end of the lifting control mechanism is connected with a moving detection mechanism. The side of the moving detection mechanism is adjusted so that the side of the moving detection mechanism is in sliding contact with the side of the hole pipe. The restriction on the moving detection mechanism is released through the lifting control mechanism. Under the action of gravity, the moving detection mechanism descends and enters the hole pipe. During the descent of the moving detection mechanism, it remains stable and does not collide. It has a simple structure and good stability, solving the problems in the prior art that in water level measurement work, relevant detection instruments are mostly put into the hole by gravity. During the falling process of the detection instrument, it is easy to shake, causing the detector to directly collide with the hole wall, resulting in the detection instrument being unable to reach the water surface in the hole, and even possibly damaging the detection instrument due to collision with the hole wall during the measurement process. At the same time, most of the traditional detectors are manually operated below, with relatively complex operations and high requirements for the operating experience of operators, and the reliability of the measured data is poor.
[0040] Based on the description and drawings of the present invention, those skilled in the art can easily manufacture or use a borehole water level measuring device of the present invention and can achieve the positive effects recorded in the present invention.
[0041] Unless otherwise specifically stated, in the present invention, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only for exemplary illustration and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood by combining the drawings and according to specific circumstances.
[0042] Unless otherwise clearly specified and defined, in the present invention, if there are terms such as "set", "connected" and "connected", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0043] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any simple modifications and equivalent changes made to the above embodiments based on the technical essence of the present invention all fall within the protection scope of the present invention.
Claims
1. A borehole water level measuring device for geological exploration, comprising a frame (1), an electric measuring clock (2), and a signal receiver (3) for receiving the signal of the electric measuring clock (2), characterized in that, It further includes: An auxiliary fixing mechanism, which is arranged on the side wall of the frame (1) and is used for erecting the frame (1) at the orifice; A lifting control mechanism, which is arranged on the frame (1) and includes a driving control structure, a connecting shaft with one end connected to the driving control structure, a reel (5) connected to the other end of the connecting shaft, and a limit locking structure for braking the connecting shaft; and A moving detection mechanism, which is suspended below the frame (1) through a lifting connection component wound around the reel (5) and includes an annular frame (6), a plurality of thread adjusting structures arranged circumferentially on the annular frame (6), an elastic protection structure with one end connected to each thread adjusting structure, and a spherical support structure connected to the other end of each elastic protection structure; The plurality of spherical support structures can cooperate with the acting force in the horizontal direction of the outward elastic force of the elastic protection structure and the inward extrusion force of the hole wall, so that the moving detection mechanism steadily moves downward under the action of gravity; The electric measuring clock (2) is fixedly arranged at the bottom end of the moving detection mechanism and can steadily rise or fall along with the moving detection mechanism under the drive of the lifting control mechanism; The auxiliary fixing mechanism includes a plurality of adjustable support structures circumferentially arranged on the side wall of the frame (1). Each adjustable support structure includes a fixed sleeve (7) fixedly arranged at the bottom edge of the frame (1), a sliding plate (8) slidably sleeved inside the fixed sleeve (7), and a fastening bolt (9) with one end first passing through the side wall of the fixed sleeve (7) and then extending into a positioning blind hole preset on the side wall of the sliding plate (8). A plurality of the positioning blind holes are arranged at intervals along the length direction of the sliding plate (8); The driving control structure includes a box body (10) arranged on the frame (1), a servo motor (11) with a driving end connected to the connecting shaft (4), a battery pack (12) arranged on one side of the servo motor (11), and a controller (13) arranged on the upper end face of the box body (10); The limit locking structure includes two fixed seats (14) located on both sides in the width direction of the connecting shaft (4), two cylinders (15) arranged on the two fixed seats (14) and with piston ends all pointing in the direction of the connecting shaft (4), and two arc-shaped friction plates (16) arranged on the piston ends of the two cylinders (15); The lifting connection component includes a flexible connection pipe (17) and a wire (18) embedded in the flexible connection pipe (17). The flexible connection pipe (17) is wound around the reel (5) and has one end connected to the annular frame (6). One end of the wire (18) is connected to the signal receiver (3) and the other end is connected to the electric measuring clock (2).
2. The borehole water level measuring device for geological exploration according to claim 1, characterized in that: The thread adjusting structure includes a mounting seat (19) arranged inside the annular frame (6), a thread sleeve (20) fixedly connected to the mounting seat (19), and a thread post (21) spirally inserted into the thread sleeve (20).
3. The borehole water level measuring device for geological exploration according to claim 1, characterized in that: The elastic protection structure includes a compression spring (22), a mounting plate (23), and a telescopic column (24); one end of the telescopic column (24) is fixedly connected to the threaded column (21), and the other end is fixedly connected to the mounting plate (23); the compression spring (22) is sleeved outside the telescopic column (24), and its two ends respectively abut against the threaded column (21) and the mounting plate (23).
4. The borehole water level measuring device for geological exploration according to claim 1 or 3, characterized in that: The spherical support structure includes a connecting seat (25) provided on the side wall of the mounting plate (23), a fixing block (26) provided on the side wall of the connecting seat (25) and having a spherical groove, and a spherical head (27) rotatably connected to the spherical groove.
5. The borehole water level measuring device for geological exploration according to claim 1, characterized in that: A counterweight (28) is provided inside the annular frame (6).
6. The borehole water level measuring device for geological exploration according to claim 1, characterized in that: Scale lines are provided on the outer side wall surface of the flexible connecting pipe (17), and numerical values are marked on the scale lines.
Citation Information
Patent Citations
Limnimeter for measuring underground water level
CN101660405A
Inclined borehole water level measuring device
CN212058967U