Drilling structure for long-term monitoring of underground water level

Abstract

The utility model relates to the technical field of underground water level monitoring, in particular to a drilling structure for underground water level long-term monitoring. The device comprises a supporting plate, an excavating mechanism, a pressing mechanism, a rotating mechanism and an adsorption mechanism. The supporting plate is used for being arranged on the ground for positioning. The excavating mechanism is used for drilling; the downward pressing mechanism is arranged on the supporting plate and used for providing power for the excavating mechanism to move in the vertical direction. The rotating mechanism is arranged at the transmission end of the downward pressing mechanism and used for providing rotating power for the excavating mechanism. And the adsorption mechanism is used for cleaning chippings and slurry generated in the drilling process, the drilling efficiency is effectively improved, and the stability of the drilling mechanism is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underground water level monitoring, in particular to a drilling structure for long-term monitoring of underground water level. BACKGROUND

[0002] Long-term monitoring of underground water level is a key link in water resource management, environmental protection and geological disaster prevention. With the development of social economy, people's demand for underground water resources is increasing, and the concern for underground water environment is also gradually increasing. In order to ensure the rational use of resources and prevent environmental pollution, it is particularly important to establish an efficient underground water level monitoring system. This system not only needs to have high-precision data acquisition capability, but also needs to adapt to various complex geographical environments, so as to realize effective monitoring of more than 400 meters deep underground water dynamic changes.

[0003] Among the existing technical means, the common underground water level drilling method mainly includes the following aspects: first, the manual operation of drilling equipment for sampling is relatively traditional, although this method is intuitive and easy to operate, but due to its high dependence on manpower, the efficiency is low and the labor intensity is large; second, modern automatic drilling equipment combined with sensor real-time data acquisition technology is widely used, which significantly improves the work efficiency and can overcome the challenges brought by complex geological conditions to a certain extent, but the cost of equipment is relatively high, and the maintenance is also relatively complicated.

[0004] For the related technologies in the above, the inventors believe that the above-mentioned various existing underground water level monitoring methods have certain limitations, especially in the face of complex and variable geological conditions, it is difficult to realize efficient and accurate drilling and sampling. For example, traditional manual operation is limited by human resources and cannot support long-time continuous operation; while the automatic drilling equipment improves the overall performance, but most of the existing drilling tools generally lack effective desilting mechanism, which leads to a large amount of debris and mud generated in the actual operation process easily blocking the water pipeline, thereby affecting the normal operation of the whole system and the accuracy of the data. In summary, it is urgent to develop a novel drilling structure that can stably and reliably implement underground water level monitoring in various environments. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above problems, the present application provides a drilling structure for long-term monitoring of underground water level.

[0006] The drilling structure for long-term monitoring of underground water level provided by the present application adopts the following technical scheme:

[0007] The underground water level long-term monitoring drilling structure comprises a support plate, a digging mechanism, a pressing mechanism, a rotating mechanism and an adsorption mechanism.

[0008] The underground water level long-term monitoring drilling structure can realize efficient and stable drilling operation.

[0009] Preferably, the digging mechanism comprises a power rod, a first communication pipe is arranged in the power rod, a first bevel gear is arranged on the outer edge of the power rod, the power rod passes through the adsorption plate and is connected with the connecting assembly 502, a first flange plate is arranged at the bottom end of the power rod, a plurality of expansion assemblies are connected with the lower end of the power rod, and a digging assembly is arranged below the lowermost expansion assembly.

[0010] The power rod of the digging mechanism can not only realize the transmission of internal fluid, but also realize efficient rotation through cooperation with the rotating mechanism through the first bevel gear.

[0011] Preferably, the expansion assembly comprises an expansion rod, a second communication pipe is arranged in the expansion rod, a second flange plate is arranged at the upper end of the expansion rod, and a third flange plate is arranged at the lower end of the expansion rod.

[0012] By adopting the above technical solution, the number of expansion assemblies can be adjusted according to actual needs, so as to flexibly adjust the digging depth and meet the needs of long-term monitoring of underground water level under different geological conditions. At the same time, the multi-stage expansion design helps to improve the drilling efficiency and stability, and by arranging multiple expansion rods, the digging depth can be effectively extended to complete deep digging work.

[0013] Preferably, the digging assembly comprises a digging rod, a third communication pipe is arranged in the digging rod, a fourth flange plate is arranged at the upper end of the digging rod, a digging head is arranged at the lower end of the digging rod, a plurality of crushing protrusions are arranged on the digging head, a fourth communication pipe is arranged in the crushing protrusions, and the fourth communication pipe is communicated with the third communication pipe.

[0014] By adopting the above technical solution, the digging assembly can more effectively break and remove obstacles in the soil layer, ensuring the smooth progress of the drilling process. Specifically, the design of the crushing protrusions enables the digging head to better cut the soil during rotation, and the arrangement of the fourth communication pipe helps to timely discharge the broken soil particles, improving the work efficiency and reducing the risk of blockage.

[0015] Preferably, the pressing mechanism comprises a connecting plate arranged on the support plate, a pressing plate is arranged on the connecting plate, a guide rod is arranged between the pressing plate and the support plate, a rotating lead screw is rotatably connected to the connecting plate, the rotating lead screw passes through the pressing plate, a pressing motor is connected to the rotating lead screw, a pressing block is slidably connected to the guide rod, the pressing block is screw transmission connected with the rotating lead screw, and the adsorption plate is connected to the pressing block.

[0016] By adopting the above technical solution, the pressing mechanism can accurately control the up-down movement of the digging mechanism, ensuring the stability and accuracy during the drilling process. At the same time, the design of the guide rod and the screw transmission makes the transmission of the pressing force more uniform, reduces mechanical wear and tear, and prolongs the service life of the equipment. In addition, this design also improves the operation convenience of the entire device, facilitating maintenance and repair.

[0017] Preferably, the rotating mechanism comprises a lifting frame arranged below the adsorption plate, a rotating motor is arranged on the lifting frame, a second bevel gear is arranged at the transmission end of the rotating motor, and the second bevel gear is meshed with the first bevel gear.

[0018] By adopting the technical scheme, the design of the rotating mechanism enables the digging mechanism to rotate stably during drilling, improves drilling efficiency and accuracy.

[0019] Preferably, the connecting assembly comprises a mounting box arranged on the adsorption plate, and the adsorption pipe is connected to the mounting box; the connecting assembly further comprises a rotating block arranged at the top end of the power rod, and the rotating block is provided with a placing groove, and a plurality of balls are arranged in the placing groove.

[0020] By adopting the technical scheme, the design of the connecting assembly makes the connection between the adsorption pipe and the power rod more stable and reliable, and the balls in the placing groove of the rotating block reduce the frictional force during rotation, thereby improving the operation efficiency of the entire device.

[0021] Preferably, the adsorption plate is provided with a sealing groove, and the mounting box is provided with a sealing protrusion, and the sealing protrusion can be arranged in the sealing groove.

[0022] By adopting the technical scheme, the design of the sealing groove and the sealing protrusion effectively enhances the sealing property between the adsorption plate and the mounting box, prevents leakage of gas or liquid during adsorption, and significantly improves the overall adsorption effect of the adsorption mechanism.

[0023] Preferably, the guide pipe is provided with a blocking sieve plate, and the blocking sieve plate is arranged on one side of the discharge pipe and can enable the impurities sucked up to fall into the discharge pipe.

[0024] By adopting the technical scheme, large-particle impurities can be effectively filtered out during adsorption, preventing the impurities from entering the pump body and causing damage to the pump body, thereby ensuring smooth progress of the entire adsorption process and normal operation of the equipment. Meanwhile, the design of the blocking sieve plate blocks the solid sucked up, so that the solid falls into the discharge pipe under the action of gravity, thereby improving the stability and reliability of the overall system.

[0025] Preferably, the connecting assembly further comprises a plurality of flexible blocking rods arranged at the lower end of the adsorption plate, and the flexible blocking rods are arranged obliquely around the power rod.

[0026] By adopting the technical scheme, the flexible blocking rods can effectively prevent external impurities from entering the connecting assembly, thereby ensuring smooth progress of the adsorption process.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The synergistic effect of the pressing mechanism and the rotating mechanism provides stable and reliable vertical motion and rotational power, which greatly improves drilling efficiency and stability. It is also applicable to deeper drilling, and is especially suitable for groundwater level monitoring under complex geological conditions.

[0029] 2. The adsorption mechanism, through the combined use of adsorption tubes, guide tubes, and adsorption pumps, can effectively remove debris and mud generated during drilling, prevent blockage of water pipelines, and ensure the normal operation of the system;

[0030] 3. The crushing protrusion design in the excavation component enhances the excavator's ability to break up hard strata, enabling the drilling structure to maintain efficient and stable operation in various geological environments and improving the efficiency of groundwater level drilling. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0032] Figure 2 This is a schematic cross-sectional view of the structure of an embodiment of this application;

[0033] Figure 3 This application Figure 2 A magnified view of point A;

[0034] Figure 4 This application Figure 3 Enlarged view of point B.

[0035] Explanation of reference numerals in the attached drawings: 1. Support plate; 2. Excavating mechanism; 201. Power rod; 202. First connecting pipe; 203. First bevel gear; 204. First flange; 205. Extension assembly; 2051. Extension rod; 2052. Second connecting pipe; 2053. Second flange; 2054. Third flange; 206. Excavating assembly; 2061. Excavating rod; 2062. Third connecting pipe; 2063. Fourth flange; 2064. Excavating head; 2065. Crushing protrusion; 2066. Fourth connecting pipe; 3. Pressing mechanism; 301. Connecting plate; 302. Pressing plate; 303. Guide rod 304. Rotating screw; 305. Downward pressing motor; 306. Downward pressing block; 4. Rotating mechanism; 401. Lifting frame; 402. Rotating motor; 403. Second bevel gear; 5. Adsorption mechanism; 501. Adsorption plate; 502. Connecting assembly; 5021. Mounting box; 5022. Rotating block; 5023. Storage trough; 5024. Ball bearing; 503. Adsorption tube; 504. Guide tube; 505. Adsorption pump; 506. Discharge pipe; 507. Side suction pump; 508. Waste bin; 509. One-way valve; 510. Sealing groove; 511. Sealing protrusion; 512. Blocking screen plate; 6. Flexible blocking bar. Detailed Implementation

[0036] The following description will be made in conjunction with the accompanying drawings Figures 1-4 Further detailed description is made to the present application.

[0037] The borehole structure for long-term monitoring of groundwater level provided by the embodiments of the present application refers to Figure 1 , including a support plate 1, a digging mechanism 2, a pressing mechanism 3, a rotating mechanism 4, and an adsorption mechanism 5. The support plate 1 is used for positioning on the ground; the digging mechanism 2 is used for drilling work; the pressing mechanism 3 is arranged on the support plate 1 and is used for providing power for the vertical movement of the digging mechanism 2; the rotating mechanism 4 is arranged on the transmission end of the pressing mechanism 3 and is used for providing power for the rotation of the digging mechanism 2; and the adsorption mechanism 5 is used for adsorbing the debris and mud produced in the drilling process.

[0038] Specifically, the support plate 1 can be made of high-strength steel material, has good deformation resistance and corrosion resistance, and ensures stability when used in various complex environments. The support plate 1 can be fixed on the ground by bolts, or can be fixed by expansion screws and the like, to adapt to different ground conditions.

[0039] The working principle of the support plate 1 is to ensure the stability of the entire drilling structure on the ground through its solid structure and diversified fixing methods, to prevent instability caused by uneven or soft ground.

[0040] Reference Figure 2, the excavating mechanism 2 comprises a power rod 201, a first communication pipe 202 is arranged in the power rod 201, and a first bevel gear 203 is arranged on the outer edge of the power rod 201. The power rod 201 penetrates through the adsorption plate 501 and is connected with the connecting assembly 502. A first flange plate 204 is arranged at the bottom end of the power rod 201, a plurality of expansion assemblies 205 are connected to the lower end of the power rod 201, the expansion assembly 205 comprises an expansion rod 2051, a second communication pipe 2052 is arranged in the expansion rod 2051, a second flange plate 2053 is arranged at the upper end of the expansion rod 2051, and a third flange plate 2054 is arranged at the lower end of the expansion rod 2051. The expansion rod 2051 can also be made of stainless steel to ensure its strength and durability. The second communication pipe in the expansion rod 2051 is communicated with the first communication pipe 202 in the power rod 201, forming a complete fluid channel, and a digging assembly 206 is arranged below the lowermost expansion assembly 205. The digging assembly 206 comprises a digging rod 2061, a third communication pipe 2062 is arranged in the digging rod 2061, a fourth flange plate 2063 is arranged at the upper end of the digging rod 2061, a digging head 2064 is arranged at the lower end of the digging rod 2061, a plurality of crushing protrusions 2065 are arranged on the digging head 2064, a fourth communication pipe 2066 is arranged in the crushing protrusion 2065, and the fourth communication pipe 2066 is communicated with the third communication pipe 2062. The digging rod 2061 can be made of high-strength alloy steel to improve its hardness and wear resistance. The digging head 2064 is designed in a multi-angled structure, which increases the cutting area and improves the crushing efficiency. The fourth communication pipe 2066 in the crushing protrusion 2065 is communicated with the third communication pipe 2062 in the digging rod 2061, high-pressure water or air can be injected during the drilling process, and the drilling debris and mud can be effectively removed to avoid blockage;

[0041] The power rod 201 can be made of stainless steel to improve its wear resistance and service life. The first communication pipe 202 in the power rod 201 is used for transmitting liquid or gas to facilitate the removal of debris and mud during the drilling process. The working principle of the power rod 201 is that under the drive of the rotating mechanism 4, the first bevel gear 203 is engaged with the second bevel gear 403 to realize high-speed rotation, thereby driving the digging assembly 206 to perform efficient drilling work. The working principle of the expansion rod 2051 is to realize the free adjustment of the length through the connection of multiple flange plates, so as to adapt to the drilling requirements of different depths, and the working principle of the digging head 2064 is to utilize its multi-angled structure and crushing protrusion 2065 to efficiently crush the soil through high-speed rotation, thereby generating fine particles for subsequent slag discharge treatment.

[0042] Reference Figure 1The down-pressing mechanism 3 comprises a connecting plate 301 arranged on the support plate 1, a down-pressing plate 302 arranged on the connecting plate 301, a guide rod 303 arranged between the down-pressing plate 302 and the support plate 1, a rotating lead screw 304 rotatably connected to the connecting plate 301, the rotating lead screw 304 penetrating through the down-pressing plate 302, a down-pressing motor 305 connected to the rotating lead screw 304, a down-pressing block 306 slidably connected to the guide rod 303, and the down-pressing block 306 being in screw transmission connection with the rotating lead screw 304, and the suction plate 501 being connected to the down-pressing block 306.

[0043] The working principle of the down-pressing mechanism 3 is that the down-pressing motor 305 drives the rotating lead screw 304 to rotate, and drives the down-pressing block 306 to move up and down along the guide rod 303, so as to realize the vertical downward pressure on the digging mechanism 2. The down-pressing motor 305 can be a bidirectional motor, which can accurately control the down-pressing speed and force, and ensure the stability and safety of the drilling process.

[0044] The working principle of the down-pressing motor 305 is that a precise servo control system is used to accurately control the down-pressing process according to the set parameters, so as to ensure the stability and safety of the down-pressing process.

[0045] Reference Figure 1 The rotating mechanism 4 comprises a hoisting frame 401 arranged below the suction plate 501, a rotating motor 402 arranged on the hoisting frame 401, and a second bevel gear 403 arranged on the transmission end of the rotating motor 402 and engaged with the first bevel gear 203. The rotating mechanism 4 provides stable rotating power for the digging mechanism 2 during the drilling process. The engagement design of the second bevel gear 403 and the first bevel gear 203 ensures the reliability of torque transmission and reduces energy loss.

[0046] The working principle of the rotating motor 402 is to convert electrical energy into mechanical energy to generate strong rotating driving force, and the rotating driving force is transmitted to the power rod 201 through the engagement of the second bevel gear 403 and the first bevel gear 203, so as to drive the digging head 2064 to drill efficiently.

[0047] Reference Figure 3 And Figure 4 The suction mechanism 5 comprises a suction plate 501 arranged on the transmission end of the down-pressing mechanism 3, the suction plate 501 being horizontally arranged, a connecting assembly 502 arranged on the suction plate 501, the digging mechanism 2 being connected to the connecting assembly 502, a suction pipe 503 connected to the connecting assembly 502, a guide pipe 504 connected to the suction pipe 503, the guide pipe 504 being horizontally arranged, a suction pump 505 arranged on the guide pipe 504, a discharge pipe 506 further arranged on the guide pipe 504, the discharge pipe 506 being vertically arranged, a side suction pump 507 arranged on the discharge pipe 506, a waste bin 508 communicated with the discharge pipe 506, and a one-way valve 509 arranged on the waste bin 508.

[0048] The adsorption plate 501 in the adsorption mechanism 5 is horizontally arranged, and a connecting assembly 502 is arranged on the adsorption plate 501, the excavating mechanism 2 is connected to the connecting assembly 502, an adsorption pipe 503 is connected to the connecting assembly 502, a guide pipe 504 is connected to the adsorption pipe 503, the guide pipe 504 is horizontally arranged, an adsorption pump 505 is arranged on the guide pipe 504, a discharge pipe 506 is further arranged on the guide pipe 504, the discharge pipe 506 is vertically arranged, and a side suction pump 507 is arranged on the discharge pipe 506. The main function of the adsorption mechanism 5 is to collect the debris and mud generated during the drilling process and discharge them into an external container. The adsorption pipe 503 can be made of a flexible bellows to increase its flexibility and application range. The diameters of the guide pipe 504 and the discharge pipe 506 can be adjusted according to actual needs to achieve the best discharge effect. The adsorption pump 505 and the side suction pump 507 can be centrifugal pumps or pneumatic diaphragm pumps, which have high pumping capacity and stability. The waste bin 508 and the one-way valve 509 are arranged to ensure the overall air pressure balance of the adsorption system.

[0049] The working principle of the adsorption plate 501 is to serve as the core component of the adsorption mechanism 5, bearing the adsorption pipe 503, the guide pipe 504 and other components. By being horizontally arranged, the uniformity and effectiveness of the adsorption process are ensured.

[0050] The working principle of the adsorption pipe 503 is to effectively collect the debris and mud generated during the drilling process and then discharge them through the guide pipe 504 and the discharge pipe 506.

[0051] The working principle of the guide pipe 504 is to serve as an intermediate transition part to guide the materials collected by the adsorption pipe 503 to the discharge pipe 506 and finally discharge them into an external container. The horizontal arrangement of the guide pipe 504 is conducive to the smooth flow of materials.

[0052] The working principle of the discharge pipe 506 is to vertically discharge the materials flowing out of the guide pipe 504. Through the pressurization of the side suction pump 507, it is ensured that the materials are completely discharged to avoid blockage.

[0053] A sealing groove 510 is arranged on the adsorption plate 501, and a sealing protrusion 511 is arranged on the mounting box 5021. The sealing protrusion 511 can be arranged in the sealing groove 510 to prevent dust and moisture from entering the system. A blocking sieve plate 512 is arranged in the guide pipe 504, which is arranged on one side of the discharge pipe 506 and can make the impurities sucked fall into the discharge pipe 506. A plurality of flexible blocking rods 6 are further arranged at the lower end of the adsorption plate 501, which are arranged obliquely around the power rod 201 to increase the adsorption effect.

[0054] The working principle of the sealing groove 510 and the sealing protrusion 511 is to prevent external dust and moisture from entering the system by close fitting, thereby ensuring the reliability of the system operation.

[0055] The working principle of the blocking sieve plate 512 is to prevent large particles from entering the adsorption pump 505 by physical barrier, thereby ensuring the smooth progress of the adsorption process.

[0056] Reference Figure 3 The working principle of the flexible blocking rod 6 is to increase the adsorption force of the pump body on the adsorption pipe 503 by tilting, thereby ensuring the smooth progress of the adsorption process.

[0057] The implementation principle of the underground water level long-term monitoring borehole structure of the embodiment of the application is that the borehole structure is stably positioned on the ground by the support plate 1, the digging mechanism 2 can efficiently complete the drilling operation under the joint action of the pressing mechanism 3 and the rotating mechanism 4. The adsorption mechanism 5 is responsible for timely removing the debris and mud produced in the drilling process, keeping the drilling area clean, ensuring the normal operation of the system, and greatly improving the digging efficiency and reliability of the underground water level monitoring.

[0058] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A borehole structure for long-term monitoring of groundwater level, characterized in that, Comprising A support plate (1) for positioning on the ground; A digging mechanism (2) for drilling work; A pressing mechanism (3) provided on the support plate (1), for providing power for the vertical movement of the digging mechanism (2); A rotating mechanism (4) provided on the driving end of the pressing mechanism (3), for providing power for the rotation of the digging mechanism (2); An adsorption mechanism (5) comprising an adsorption plate (501) provided on the driving end of the pressing mechanism (3), the adsorption plate (501) is horizontally arranged, the adsorption plate (501) is provided with a connecting assembly (502), the digging mechanism (2) is connected to the connecting assembly (502), the connecting assembly (502) is connected with an adsorption pipe (503), the adsorption pipe (503) is connected with a guide pipe (504), the guide pipe (504) is horizontally arranged, the guide pipe (504) is provided with an adsorption pump (505), the guide pipe (504) is provided with a discharge pipe (506), the discharge pipe (506) is vertically arranged, the discharge pipe (506) is provided with a side suction pump (507), the discharge pipe (506) is movably connected with a waste bin (508), the waste bin (508) is provided with a one-way valve (509).

2. The borehole structure for long-term monitoring of the groundwater level according to claim 1, characterized in that, The digging mechanism (2) comprises a power rod (201), a first communication pipe (202) is arranged in the power rod (201), a first bevel gear (203) is arranged on the outer edge of the power rod (201), the power rod (201) passes through the adsorption plate (501) and is connected with the connecting assembly (502), a first flange plate (204) is arranged at the bottom end of the power rod (201), a plurality of expansion assemblies (205) are connected to the lower end of the power rod (201), a digging assembly (206) is arranged below the lowermost expansion assembly (205).

3. A borehole structure for long-term monitoring of groundwater level according to claim 2, characterized in that, The expansion assembly (205) comprises an expansion rod (2051), a second communication pipe (2052) is arranged in the expansion rod (2051), a second flange plate (2053) is arranged at the upper end of the expansion rod (2051), and a third flange plate (2054) is arranged at the lower end of the expansion rod (2051).

4. The borehole structure for long-term monitoring of the groundwater level according to claim 3, characterized in that, The digging assembly (206) comprises a digging rod (2061), a third communication pipe (2062) is arranged in the digging rod (2061), a fourth flange plate (2063) is arranged at the upper end of the digging rod (2061), a digging head (2064) is arranged at the lower end of the digging rod (2061), a plurality of crushing protrusions (2065) are arranged on the digging head (2064), a fourth communication pipe (2066) is arranged in the crushing protrusions (2065), and the fourth communication pipe (2066) is communicated with the third communication pipe (2062).

5. A borehole structure for long-term monitoring of groundwater level according to claim 4, characterized in that, The lower pressing mechanism (3) comprises a connecting plate (301) arranged on the support plate (1), a lower pressing plate (302) is arranged on the connecting plate (301), a guide rod (303) is arranged between the lower pressing plate (302) and the support plate (1), a rotating lead screw (304) is rotatably connected to the connecting plate (301), the rotating lead screw (304) penetrates through the lower pressing plate (302), a lower pressing motor (305) is connected to the rotating lead screw (304), a lower pressing block (306) is slidably connected to the guide rod (303), the lower pressing block (306) is in screw transmission connection with the rotating lead screw (304), and the adsorption plate (501) is connected to the lower pressing block (306).

6. A borehole structure for long-term monitoring of groundwater level according to claim 5, characterized in that, The rotating mechanism (4) comprises a lifting frame (401) arranged below the adsorption plate (501), a rotating motor (402) is arranged on the lifting frame (401), a second bevel gear (403) is arranged at the transmission end of the rotating motor (402), and the second bevel gear (403) is in meshing connection with the first bevel gear (203).

7. A borehole structure for long-term monitoring of groundwater level according to claim 6, characterized in that, The connecting assembly (502) comprises a mounting box (5021) arranged on the adsorption plate (501), the adsorption pipe (503) is connected to the mounting box (5021), and a rotating block (5022) is arranged at the top end of the power rod (201), a placing groove (5023) is arranged on the rotating block (5022), and a plurality of ball bearings (5024) are arranged in the placing groove (5023).

8. A borehole structure for long-term monitoring of groundwater level according to claim 7, characterized in that A sealing groove (510) is arranged on the adsorption plate (501), a sealing protrusion (511) is arranged on the mounting box (5021), and the sealing protrusion (511) can be arranged in the sealing groove (510).

9. A borehole structure for long-term monitoring of groundwater level according to claim 8, characterized in that, A blocking sieve plate (512) is arranged in the guide pipe (504), the blocking sieve plate (512) is arranged on one side of the discharge pipe (506), and impurities sucked up can fall into the discharge pipe (506).

10. The borehole structure for long-term monitoring of the groundwater level according to claim 9, characterized in that, A plurality of flexible blocking rods (6) are arranged at the lower end of the adsorption plate (501), and the flexible blocking rods (6) are arranged inclined around the power rod (201).

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