An automatic monitoring and pumping system for groundwater in heavy metal-contaminated land or mines

Abstract

The present invention discloses an automatic monitoring and pumping system for groundwater in heavy metal-contaminated plots or mines. The monitoring system includes a groundwater extraction main box, a first motor, a groundwater arc-shaped monitoring component, a sensor, and a groundwater extraction sub-box; a groundwater extraction main box is provided below the top cover of the monitoring well, and two first motors are longitudinally slidably provided below the groundwater extraction main box. The lower ends of the two first motors are respectively provided with groundwater arc-shaped monitoring components through two pin-connected shafts, and each groundwater arc-shaped monitoring component is provided with a sensor and a monitoring pumping pipe, and the sensing end of the sensor is located in the groundwater, and the water inlet ends of all monitoring pumping pipes are located in the groundwater, and the water outlet ends are connected to the groundwater extraction sub-box, and all groundwater extraction sub-boxes are connected to the groundwater extraction main box. The present invention provides an automatic monitoring system for groundwater in heavy metal-contaminated plots or mines, which can simultaneously and accurately detect and extract groundwater in each layer.

Description

Technical Field

[0001] The present invention relates to the technical field of groundwater monitoring systems, and in particular to a heavy metal groundwater contamination site monitoring system and contaminated groundwater extraction. Background Art

[0002] Groundwater quality / water environment pollution is a complex environmental geochemical process, which is affected and interacted by many factors such as the physical and chemical properties of pollutants, hydrogeological conditions, hydrogeochemical effects, human activities, and land use. This interference exacerbates the instability of the groundwater system and causes the system complexity of groundwater pollution. It makes the groundwater pollution control work difficult, costly, and time-consuming. Therefore, the protection measures for groundwater resources must be transformed from "pollution first, then control" to "prevention first, combined with prevention and control".

[0003] The contaminated soil in heavy metal sites and mining areas is not only a receptor for pollutants such as mining wastewater and waste residue, but also a source of pollution in the surrounding areas. Soil seepage caused by precipitation will cause pollution to spread to surrounding areas and underground, causing harm to the water and soil ecological environment around the mining area. Soluble metal ions and compounds in contaminated soil will eventually enter the water body, thus affecting the food and drinking water safety of a larger area. In recent years, a large number of heavy metal mining areas in my country have stopped mining, and heavy metal polluting enterprises have stopped production, resulting in a large amount of heavy metal contaminated soil left over, especially in large mining areas, which are characterized by high pollution levels, wide pollution areas, and large impact ranges. They have always been a difficult point in the prevention and control of soil and its surrounding environment.

[0004] Existing water quality monitoring mostly uses sensors to monitor groundwater at a certain location. If it is found that the indicators in the groundwater at a certain location exceed the standard, an early warning will be issued. However, a more complete groundwater monitoring system requires a system to identify potential groundwater environmental risks, establish a complete data monitoring and early warning system, and form an effective groundwater pollution risk early warning and control technology. Therefore, indicator data at multiple locations in a certain layer of groundwater water level are collected to form a point cloud data system of a certain layer of groundwater water level, which provides data support for the establishment of an automatic groundwater pollution monitoring system, and is also convenient for timely monitoring of whether the pollution plume in the area is spreading, so as to realize three-dimensional and multi-dimensional early warning of groundwater pollution and provide data support for groundwater pollution risk control. Summary of the invention

[0005] In view of this, the present invention proposes an automatic monitoring and pumping system for groundwater in heavy metal-contaminated land or mines.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A system for automatically monitoring and pumping groundwater in heavy metal-contaminated land or mines, the monitoring system comprising a groundwater extraction main box, a first motor, a groundwater arc-shaped monitoring component, a sensor and a groundwater extraction sub-box; a groundwater extraction main box is provided under the top cover of the monitoring well, two first motors are longitudinally slidably provided under the groundwater extraction main box, and the lower ends of the two first motors are respectively provided with pin-connecting shafts; the groundwater arc-shaped monitoring component is composed of an arc-shaped monitoring inner plate, edge plates provided on both sides of the arc-shaped monitoring inner plate, an arc-shaped monitoring outer plate detachably provided outside the edge plate, and a sealing plate provided at the upper and lower ends of the arc-shaped monitoring inner plate, each arc-shaped monitoring inner plate, edge plate, arc-shaped monitoring outer plate and sealing plate surround a closed internal monitoring space, two pin-connecting shafts are respectively penetrated and fixed in the center positions of the two arc-shaped monitoring inner plates, an accommodating distance is left between the two groundwater arc-shaped monitoring components, and the two groundwater arc-shaped monitoring components are spaced apart from each other. They will not contact each other when rotating along their own pin-jointed axes; each of the arc-shaped monitoring inner plates is provided with several rows of monitoring holes along its circumferential surface from bottom to top, and the several rows of monitoring holes on the two groundwater arc-shaped monitoring components are symmetrical with respect to the longitudinal axis of the monitoring well; a monitoring mounting plate is matched and fixed in each monitoring hole, and each monitoring mounting plate is provided with a monitoring hole, and each monitoring hole is laterally penetrated with a sensor, and the sensing end of the sensor is located in the groundwater; a monitoring water pumping pipe hole is provided on one of the monitoring mounting plates in each row, and a monitoring water pumping pipe is penetrated in each monitoring water pumping pipe hole, and all monitoring water pumping pipes are arranged in the monitoring space, and the water inlet ends of all monitoring water pumping pipes are located in the groundwater, and the water outlet ends are penetrated through the sealing plate and are respectively connected to the groundwater extraction sub-boxes, and all groundwater extraction sub-boxes are arranged on the sealing plate, and all groundwater extraction sub-boxes are respectively connected to the groundwater extraction main box through hoses.

[0008] Preferably, the sensors include a water level sensor, a water temperature sensor, a water quality detection sensor and a heavy metal ion detection sensor.

[0009] Preferably, two first motors are longitudinally slidably provided at the bottom of the groundwater extraction main box through a sliding assembly; the sliding assembly includes a second motor, a screw, a guide rod, a screw internal thread sleeve, a guide rod sleeve and a connecting frame; a connecting frame is provided above the two first motors, one side of the connecting frame is provided with a fixed guide rod sleeve and a guide rod is matched and penetrated in the guide rod sleeve, the guide rod is fixed to the lower end surface of the groundwater extraction main box, the other side of the connecting frame is provided with a screw internal thread sleeve fixedly provided and the screw internal thread sleeve is connected to a screw, one end of the screw is connected to the motor shaft of the second motor, and the second motor is fixed to the lower end surface of the groundwater extraction main box.

[0010] Preferably, the two first motors are symmetrically arranged with respect to the central axis of the monitoring well; and the two groundwater arc-shaped monitoring elements are symmetrically arranged with respect to the central axis of the monitoring well.

[0011] Preferably, the arc-shaped monitoring outer plate is threadedly connected to the edge plate of the arc-shaped monitoring inner plate; and a sensor is fixedly provided on the inner end surface of the arc-shaped monitoring outer plate.

[0012] Preferably, the top end of the arc-shaped groundwater monitoring member is located above the groundwater level, and the rows of monitoring holes are all located below the groundwater level.

[0013] Preferably, the interior of the groundwater extraction main box is divided by a baffle into a number of groundwater extraction collection chambers equal to the number of rows of monitoring holes; all monitoring pumping pipes installed on each row of monitoring holes of the two groundwater arc-shaped monitoring components are connected to a groundwater extraction collection chamber of the groundwater extraction main box through a hose; a number of groundwater export pipes are passed through the upper end of the groundwater extraction main box corresponding to the positions of the several groundwater extraction collection chambers, and one end of the several groundwater export pipes are respectively passed through the top cover, and the other ends are respectively extended to the position in the groundwater collection chamber close to its bottom.

[0014] Preferably, it also includes a monitoring and control system; the monitoring and control system includes a wireless network module, a data transmission module and a control center server; the output end of the sensor is electrically connected to the input end of the wireless network module, a number of heavy metal groundwater extracted samples in the groundwater collection room are respectively transported to the heavy metal groundwater analysis instrument through the groundwater outlet pipe, the output end of a number of heavy metal groundwater analysis instruments is electrically connected to the input end of the wireless network module, the output end of the wireless network module is electrically connected to the input end of the data transmission module, and the output end of the data transmission module is electrically connected to the input end of the control center server.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] It can conduct real-time groundwater monitoring and sampling of multiple layers of groundwater in heavy metal groundwater contaminated sites, facilitating subsequent data analysis and groundwater monitoring;

[0017] In the real-time monitoring and sampling of groundwater in each layer of heavy metal groundwater contaminated sites, the groundwater at each position of each layer can be monitored in real time and sampled, including horizontal and vertical positions, to achieve multi-point monitoring and multi-point sampling, so as to obtain more accurate monitoring data results for each layer of groundwater in heavy metal groundwater contaminated sites;

[0018] The system can collect, transmit and count the relevant operating data of each layer of groundwater monitoring wells, including but not limited to water level, water temperature, pH value, turbidity, heavy metal ions and other indicators, and grasp the overall status of groundwater in heavy metal-contaminated plots or mines; the control center server can intuitively display the historical changes and current status of monitoring data, and provide simple, clear and effective information reference for groundwater monitoring well production managers; once an emergency abnormality occurs in the groundwater quality and water environment, the system can issue early warning information in a timely manner;

[0019] The seat end of the sensor and all monitoring pumping pipes are installed in the monitoring space to protect the sensor and all monitoring pumping pipes from being corroded by groundwater in heavy metal groundwater contaminated sites, extend the service life, and save overall installation space during installation, maintenance and replacement, which has greater market value in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a flow chart of the control system of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 4 It is an overall top view of the present invention;

[0024] Figure 5 for Figure 4 AA section view in the figure;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the monitoring system of the present invention;

[0026] Figure 7 It is a left view of the monitoring system of the present invention;

[0027] Figure 8 It is a top view of the monitoring well and two arc-shaped groundwater monitoring components of the present invention;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the arc-shaped groundwater monitoring element of the present invention;

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the arc-shaped groundwater monitoring element of the present invention;

[0030] Fig.11 This is a front view of the groundwater arc monitoring component of the present invention;

[0031] Fig.12 for Fig.11 BB section view in the figure;

[0032] Fig.13 It is a schematic diagram of the internal structure of the groundwater arc monitoring device of the present invention;

[0033] Fig.14 It is a schematic diagram of the internal structure of the groundwater extraction main box of the present invention.

[0034] In the figure: 1. Monitoring well; 2. Top cover; 3. Groundwater extraction main box; 4. First motor; 5. Sensor; 6. Groundwater extraction sub-box; 7. Second motor; 8. Screw; 9. Guide rod; 10. Screw internal thread sleeve; 11. Guide rod sleeve; 12. Connecting frame; 13. Pin-connected shaft; 14. Arc-shaped monitoring inner plate; 15. Edge plate; 16. Sealing plate; 17. Arc-shaped monitoring outer plate; 18. Monitoring installation plate; 19. Monitoring pumping pipe; 20. Groundwater extraction collection chamber; 21. Export pipe; 22. Wireless network module; 23. Data transmission module; 24. Control center server. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0038] like Figure 1-14As shown, an automatic monitoring and pumping system for groundwater in heavy metal-contaminated land or mines includes a monitoring well 1, a top cover 2 and a monitoring system. The top cover 2 is provided on the well cover of the monitoring well 1, and the inner end surface of the top cover 2 is provided with a monitoring system. The monitoring system adopts a solar power supply system.

[0039] The monitoring system includes a groundwater extraction main box 3, a first motor 4, a groundwater arc monitoring element, a sensor 5 and a groundwater extraction sub-box 6. A groundwater extraction main box 3 is provided below the top cover 2, and two first motors 4 are longitudinally slidably provided below the groundwater extraction main box 3 through a sliding assembly; the sliding assembly includes a second motor 7, a screw 8, a guide rod 9, a screw internal thread sleeve 10, a guide rod sleeve 11 and a connecting frame 12; a connecting frame 12 is provided above the two first motors 4, a fixed guide rod sleeve 11 is provided on one side of the connecting frame 12, and a guide rod 9 is matched and penetrated in the guide rod sleeve 11, and the guide rod 9 is fixedly provided on the lower end surface of the groundwater extraction main box 3, and a screw internal thread sleeve 10 is fixedly provided on the other side of the connecting frame 12, and the screw internal thread sleeve 10 is internally threaded with a screw 8, and one end of the screw 8 is connected to the motor shaft of the second motor 7, and the second motor 7 is fixedly provided on the lower end surface of the groundwater extraction main box 3.

[0040] The lower ends of the two first motors 4 are respectively connected to the pin-connected shaft 13 through connecting rods; the groundwater arc monitoring component includes an arc-shaped monitoring inner plate 14, an arc-shaped monitoring outer plate 17, an edge plate 15 and a sealing plate 16, and the two pin-connected shafts 13 are respectively penetrated and fixed in the center positions of the two arc-shaped monitoring inner plates 14, and an accommodation distance is left between the two arc-shaped monitoring inner plates 14. When the two arc-shaped monitoring inner plates 14 rotate along their own pin-connected shafts 13, they will not contact each other and will not contact the inner wall of the monitoring well 1.

[0041] The two first motors 4 are symmetrically arranged with respect to the central axis of the monitoring well 1 ; the two arc-shaped monitoring inner plates 14 are symmetrically arranged with respect to the central axis of the monitoring well 1 .

[0042] The two side ends of the two arc-shaped monitoring inner plates 14 are protruding outwards and provided with edge plates 15. The outer sides of the edge plates 15 of the two arc-shaped monitoring inner plates 14 are threadedly connected with arc-shaped monitoring outer plates 17. The upper and lower ends of each arc-shaped monitoring inner plate 14, edge plate 15 and arc-shaped monitoring outer plate 17 are provided with sealing plates 16. Each arc-shaped monitoring inner plate 14, edge plate 15, arc-shaped monitoring outer plate 17 and sealing plates 16 surround and form a closed internal monitoring space. The arc-shaped monitoring outer plate 17 is threadedly connected to the edge plate 15 of the arc-shaped monitoring inner plate 14. The inner end surface of the arc-shaped monitoring outer plate 17 is fixed with a sensor 5. The sensor 5 includes a water level sensor, a water temperature sensor, a water quality detection sensor, and a heavy metal ion detection sensor.

[0043] Each arc-shaped monitoring inner plate 14 is provided with 4 rows of monitoring holes along its circumferential surface from bottom to top. The 4 rows of monitoring holes on the two arc-shaped monitoring inner plates 14 are symmetrically arranged relative to the longitudinal axis of the monitoring well 1. The 4 rows of monitoring holes are all located below the groundwater level, and the top end of the groundwater arc-shaped monitoring component is located above the groundwater level. A monitoring mounting plate 18 is matched and fixed in each monitoring hole, and a monitoring hole is provided on each monitoring mounting plate 18. Sensors 5 are respectively traversed in each monitoring hole and detection tube hole. The sensing ends of the sensors 5 are located in the groundwater and the base ends of the sensors 5 are located in the monitoring space. The upper sealing plate 16 may be provided with a wire hole.

[0044] A monitoring pumping pipe 19 hole is opened on one of the monitoring installation plates 18 in each row of the two groundwater arc-shaped monitoring parts, and a monitoring pumping pipe 19 is passed through each monitoring pumping pipe 19 hole. All monitoring pumping pipes 19 are extended and installed in the monitoring space, and the outlet ends of all monitoring pumping pipes 19 pass through the sealing plate 16 and are respectively connected to the groundwater extraction sub-boxes 6. Eight groundwater extraction sub-boxes 6 are arranged on the sealing plate 16, and the eight groundwater extraction sub-boxes 6 are connected to the groundwater extraction main box 3 through a hose.

[0045] The interior of the groundwater extraction main box 3 is divided by a baffle into four groundwater extraction collection chambers 20 equal in number to the four rows of monitoring holes; all monitoring pumping pipes 19 installed on each row of monitoring holes of the two groundwater arc-shaped monitoring components are connected to a groundwater extraction collection chamber 20 of the groundwater extraction main box 3 through a hose (a pipe joint is provided at the side end of the groundwater collection chamber 20, a pipe joint is provided at the water outlet end of each groundwater extraction sub-box 6, and a hose is fixedly provided between the pipe joint of the groundwater collection chamber 20 and the pipe joint of the groundwater extraction sub-box 6); four groundwater outlet pipes 21 are penetrated at the upper end of the groundwater extraction main box 3 corresponding to the positions of the four groundwater extraction collection chambers 20, and one end of the four groundwater outlet pipes 21 respectively penetrates through the top cover 2, and the other end respectively extends into the position close to the bottom of the groundwater collection chamber.

[0046] It also includes a monitoring and control system; the monitoring and control system includes a wireless network module 22, a data transmission module 23 and a control center server 24; the output end of the sensor 5 is electrically connected to the input end of the wireless network module 22, the heavy metal groundwater extracted samples in the four groundwater collection chambers 20 are respectively transported to the heavy metal groundwater analysis instrument through the groundwater outlet pipe 21, the output end of the four heavy metal groundwater analysis instruments is electrically connected to the input end of the wireless network module 22, the output end of the wireless network module 22 is electrically connected to the input end of the data transmission module 23, and the output end of the data transmission module 23 is electrically connected to the input end of the control center server 24.

[0047] The reason why the base ends of the present sensor 5 are all located in the monitoring space is that the wiring of the sensor 5 is protected in the monitoring space to avoid corrosion of the wiring and cause the sensor 5 to malfunction, and the sensor 5 can be replaced and maintained. The arc-shaped monitoring outer plate 17 is disassembled, and the sensor 5 installed on the arc-shaped monitoring outer plate 17 is removed, and the sensor 5 can be replaced and maintained, and the type of installed sensor 5 can be freely selected. The reason why all monitoring pumping pipes 19 are arranged in the monitoring space is that all monitoring pumping pipes 19 are protected in the monitoring space to avoid corrosion in the monitoring space; the space is fully utilized, the installation space of the monitoring pumping pipes 19 is saved, and it is convenient for the subsequent installation of various groundwater extraction sub-boxes 6; all monitoring pumping pipes 19 are arranged in the monitoring space, which is also convenient for the installation of all monitoring pumping pipes 19, and the monitoring pumping pipes 19 can be installed on the monitoring installation plate 18.

[0048] The working principle of the present invention is:

[0049] The monitoring well 1 has a removable top cover 2 on its cover, and a groundwater extraction main box 3 is installed on the inner end surface of the top cover 2;

[0050] In this embodiment, real-time groundwater monitoring and sampling of groundwater extraction can be performed on four layers of groundwater, facilitating subsequent more accurate data analysis and groundwater monitoring;

[0051] When the two first motors 4 start working, the motor shafts of the two first motors 4 respectively drive the two pin-connected shafts 13 to rotate, and the two pin-connected shafts 13 then drive the two groundwater arc-shaped monitoring parts to rotate. During the rotation of the two groundwater arc-shaped monitoring parts, they will not contact each other and will not contact the inner wall of the monitoring well 1. Therefore, during the rotation of the two groundwater arc-shaped monitoring parts, the left and right four rows of sensors 5 will rotate to monitor and transmit data for the groundwater at various positions of this layer, and the left and right eight monitoring pumping pipes 19 will also rotate to sample the groundwater at various positions of this layer.

[0052] A guide rod 9 is fixedly provided on one side of the lower end of the groundwater extraction main box 3, and a second motor 7 is fixedly provided on the other side. A fixed guide rod sleeve 11 is provided on one side of the connecting frame 12, and a screw inner thread sleeve 10 is fixedly provided on the other side. The guide rod sleeve 11 on one side of the connecting frame 12 is sleeved in the guide rod 9, and the screw inner thread sleeve 10 on the other side is threadedly connected to the screw 8. When the second motor 7 starts to work, the motor shaft of the second motor 7 drives the screw 8 to rotate, and the two first motors 4 and the two groundwater arc-shaped monitoring parts will move forward / backward longitudinally, thereby the four rows of sensors 5 on the left and right will move longitudinally to expand the sensor detection range, and conduct real-time monitoring and sampling of groundwater at various positions in a larger range of this layer. The eight monitoring pumping pipes 19 on the left and right will also move longitudinally to conduct real-time monitoring and sampling of groundwater at various positions in a larger range of this layer.

[0053] The eight monitoring pumping pipes 19 on the left and right transport the heavy metal groundwater samples extracted from the four layers to the four groundwater collection chambers 20 through hoses, and the heavy metal groundwater samples are then transported to the heavy metal groundwater analysis instrument through four groundwater outlet pipes 21;

[0054] The heavy metal groundwater samples extracted from the four groundwater collection chambers 20 are respectively transported to the heavy metal groundwater analysis instrument through the groundwater outlet pipe 21. The four heavy metal groundwater analysis instruments are electrically connected to the wireless network module 22. The wireless network module 22 transmits data to the data transmission module 23. The data transmission module 23 then transmits the data signal to the control center server 24. The control center server 24 performs unified background data aggregation, analysis and monitoring. The wireless network module 22, the data transmission module 23 and the control center server 24 can all use conventional wireless network modules, data transmission modules and controllers.

[0055] This system can be widely used in long-term monitoring of heavy metal polluted plots or groundwater areas in mines, as well as water pumping, detection and processing, to achieve all-weather, high-precision and continuous remote monitoring and early warning of groundwater measurements.

[0056] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic monitoring and pumping system for groundwater in heavy metal-contaminated land or mines, characterized in that: The invention comprises a groundwater extraction main box (3), a first motor (4), a groundwater arc-shaped monitoring element, a sensor (5) and a groundwater extraction sub-box (6); a groundwater extraction main box (3) is provided below a top cover (2) of a monitoring well (1); two first motors (4) are longitudinally slidably provided below the groundwater extraction main box (3); the lower ends of the two first motors (4) are respectively provided with pin-connecting shafts (13); the groundwater arc-shaped monitoring element comprises an arc-shaped monitoring inner plate (14), edge plates (15) provided on both sides of the arc-shaped monitoring inner plate (14), and a sensor (5) which can be The arc-shaped monitoring outer plate (17) disposed outside the edge plate (15) and the sealing plates (16) disposed at the upper and lower ends of the arc-shaped monitoring inner plate (14) are disassembled to form a closed internal monitoring space surrounded by each arc-shaped monitoring inner plate (14), the edge plate (15), the arc-shaped monitoring outer plate (17) and the sealing plates (16), and two pin-jointing shafts (13) are respectively penetrated and fixed in the center positions of the two arc-shaped monitoring inner plates (14), and an accommodation distance is left between the two groundwater arc-shaped monitoring components. The two groundwater arc-shaped monitoring components are arranged along their own pin-jointing shafts (13). 3) they will not contact each other when rotating; each of the arc-shaped monitoring inner plates (14) is provided with a plurality of rows of monitoring holes along its circumferential surface from bottom to top, and the plurality of rows of monitoring holes on the two groundwater arc-shaped monitoring members are symmetrical with respect to the longitudinal axis of the monitoring well (1); a monitoring mounting plate (18) is matched and fixedly provided in each monitoring hole, each monitoring mounting plate (18) is provided with a monitoring hole, and a sensor (5) is respectively penetrated transversely in each monitoring hole, and the sensing end of the sensor (5) is located in the groundwater; one of the monitoring mounting plates (18) in each row is provided with a plurality of monitoring holes; A monitoring pumping pipe (19) hole is provided on each monitoring installation plate (18), a monitoring pumping pipe (19) is passed through each monitoring pumping pipe (19), all monitoring pumping pipes (19) are arranged in the monitoring space, the water inlet ends of all monitoring pumping pipes (19) are located in the groundwater, and the water outlet ends pass through the sealing plate (16) and are respectively connected to the groundwater extraction sub-box (6), all the groundwater extraction sub-boxes (6) are arranged on the sealing plate (16), and all the groundwater extraction sub-boxes (6) are respectively connected to the groundwater extraction main box (3) through a hose; The sensor (5) includes a water level sensor, a water temperature sensor, a water quality detection sensor and a heavy metal ion detection sensor; Two first motors (4) are longitudinally slidably arranged below the groundwater extraction main casing (3) through a sliding assembly; the sliding assembly comprises a second motor (7), a screw rod (8), a guide rod (9), a screw rod internal thread sleeve (10), a guide rod sleeve (11) and a connecting frame (12); a connecting frame (12) is arranged above the two first motors (4); a fixed guide rod sleeve (11) is arranged on one side of the connecting frame (12), and a guide rod (9) is matched and penetrated in the guide rod sleeve (11); the guide rod (9) is fixedly arranged on the lower end surface of the groundwater extraction main casing (3); a screw rod internal thread sleeve (10) is fixedly arranged on the other side of the connecting frame (12), and the screw rod internal thread sleeve (10) is internally threadedly connected to the screw rod (8); one end of the screw rod (8) is connected to the motor shaft of the second motor (7); the second motor (7) is fixedly arranged on the lower end surface of the groundwater extraction main casing (3).

2. The automatic monitoring and pumping system for groundwater in heavy metal-contaminated land or mines according to claim 1 is characterized in that: The two first motors (4) are symmetrically arranged relative to the central axis of the monitoring well (1); and the two groundwater arc-shaped monitoring components are symmetrically arranged relative to the central axis of the monitoring well (1).

3. The automatic monitoring and pumping system for groundwater in heavy metal-contaminated land or mines according to claim 1 is characterized in that: The arc-shaped monitoring outer plate (17) is threadedly connected to the edge plate (15) of the arc-shaped monitoring inner plate (14); and a sensor (5) is fixedly provided on the inner end surface of the arc-shaped monitoring outer plate (17).

4. The automatic monitoring and pumping system for groundwater in heavy metal-contaminated land or mines according to claim 1 is characterized in that: The top end of the arc-shaped groundwater monitoring component is located above the groundwater level, and the rows of monitoring holes are all located below the groundwater level.

5. The automatic monitoring and pumping system for groundwater in heavy metal-contaminated land or mines according to any one of claims 1 to 4, characterized in that: The interior of the groundwater extraction main box (3) is divided into a plurality of groundwater extraction collection chambers (20) equal in number to the plurality of rows of monitoring holes by a baffle plate; all monitoring water extraction pipes (19) installed on each row of monitoring holes of the two groundwater arc-shaped monitoring elements are connected to a groundwater extraction collection chamber (20) of the groundwater extraction main box (3) through a hose; a plurality of groundwater outlet pipes (21) are penetrated at positions corresponding to the plurality of groundwater extraction collection chambers (20) at the upper end of the groundwater extraction main box (3), and one end of the plurality of groundwater outlet pipes (21) respectively penetrates through the top cover (2), and the other end respectively extends into the groundwater collection chamber to a position close to its bottom end.

6. The automatic monitoring and pumping system for groundwater in heavy metal-contaminated land or mines according to claim 5 is characterized in that: It also includes a monitoring and control system; the monitoring and control system includes a wireless network module (22), a data transmission module (23) and a control center server (24); the output end of the sensor (5) is electrically connected to the input end of the wireless network module (22); a plurality of heavy metal groundwater extraction samples in the extraction groundwater collection chamber (20) are respectively transported to the heavy metal groundwater analysis instrument through the groundwater outlet pipe (21); the output ends of the plurality of heavy metal groundwater analysis instruments are electrically connected to the input end of the wireless network module (22); the output end of the wireless network module (22) is electrically connected to the input end of the data transmission module (23); and the output end of the data transmission module (23) is electrically connected to the input end of the control center server (24).

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