A soil water collection device and method

Abstract

The present invention provides a soil water collection device and method, which relates to the technical field of geological environment monitoring. The present invention relies on geological drilling technology to drill wells in the soil layer of the area to be measured, inserts a water receiving tray in each soil layer through a monitoring well, and opens holes in the well wall so that the water sample in the water receiving tray of the target soil layer flows into the monitoring well when the drainage switch is opened, and then the water in the monitoring well is pumped out by a water pump to complete the water sample collection of the target soil layer. The soil water collection device minimizes the impact on the soil structure of the area to be measured, improves the problem of great damage to the soil by the traditional leaching bucket method, and the problem of inability to consider the influence of horizontal water movement, thereby effectively alleviating the technical problem that the existing soil water collection device cannot guarantee the accuracy of soil water analysis results. Moreover, by collecting water samples from different soil layers, it is also possible to realize the full-profile monitoring of water movement in the soil layer.

Description

Technical Field

[0001] The present invention relates to the technical field of geological environment monitoring, and particularly to a soil water collection device and method. Background Art

[0002] With the intensification of global climate change, the monitoring and protection of the geological environment have become particularly important. Soil moisture, as an important part of the geological environment, its changes have important impacts on the stability of the ecosystem and biodiversity. Soil water monitoring technology can monitor the dynamic changes of soil moisture in real time, providing data support for the monitoring and protection of the geological environment. At the same time, by monitoring the changes in soil moisture, problems such as soil pollution and degradation can be detected in a timely manner, which is of great significance for protecting land resources and maintaining ecological balance.

[0003] Figure 1 Fig. is a schematic diagram of the principle of realizing soil water collection by the leaching bucket method, as Figure 1 shown, the leaching bucket method is to collect the leaching solution in the soil above it by artificially setting up a leaching bucket to simulate the infiltration and leaching process of soil moisture under natural rainfall or irrigation conditions. The leaching bucket is usually placed below the soil body, and the water and solutes in the soil above it seep into the leaching bucket under the action of gravity and are then collected and analyzed. However, due to the setting of the liquid collection film, the leaching bucket method cannot consider the influence of lateral water movement. Moreover, the placement and sampling operations of the leaching bucket will cause a greater degree of damage to the soil structure, affecting the natural state of the soil and resulting in changes in soil properties, thereby affecting the accuracy of soil water analysis results. In summary, the existing soil water collection devices have the technical problem of being unable to ensure the accuracy of soil water analysis results. Summary of the Invention

[0004] The purpose of the present invention is to provide a soil water collection device and method to alleviate the technical problem that the existing soil water collection devices are unable to ensure the accuracy of soil water analysis results.

[0005] In a first aspect, the present invention provides a soil water collection device, comprising: a monitoring well, a controller, a water pump, a water conduit, a partition board, a highly elastic airbag, a rotary motor, a cleaning brush, and a plurality of water receiving trays; each water receiving tray is provided with a drainage switch, and the drainage switch is default in a closed state; a well is drilled in the soil layer of the area to be measured by using geological drilling technology to obtain the monitoring well, and a well wall opening is set for each soil layer on the well wall; a water receiving tray is inserted into each soil layer through the monitoring well, and the drainage switch of the water receiving tray is connected to the well wall opening of its corresponding soil layer; one end of the water conduit is connected to the water pump, and the other end is in contact connection with the surface of the partition board; the partition board is arranged at the bottom of the monitoring well and is tightly connected to the well wall; the water pump is arranged on the ground surface of the monitoring well; the highly elastic airbag is arranged below the partition board; the bottom of the rotary motor is detachably connected to the partition board, and the cleaning brush is arranged around the rotary motor; the cleaning brush is in contact connection with the well wall; the controller is respectively connected to the water pump and the drainage switch; before collecting the water sample of the target soil layer, the controller controls the highly elastic airbag to inflate and deflate repeatedly, so that the partition board moves up and down in the monitoring well, and at the same time controls the rotary motor to rotate to drive the cleaning brush to clean the well wall. After the cleaning is completed, the controller controls the water pump to pump out the sewage in the monitoring well; when it is determined to collect the water sample of the target soil layer, the controller controls the drainage switch on the target water receiving tray in the target soil layer to open, so that the soil water in the target water receiving tray flows into the monitoring well, and after a preset time period, the controller controls the water pump to pump out the water sample in the monitoring well; wherein, the target soil layer represents any one of all the soil layers.

[0006] Optionally, the soil water collection device further comprises: an air inflator and an air conduit; the air inflator is connected to the highly elastic airbag through the air conduit, and the air inflator is arranged on the ground surface of the monitoring well; the controller is connected to the air inflator, and before the controller controls the drainage switch on the target water receiving tray in the target soil layer to open, the controller is further configured to control the air inflator to inflate / deflate the highly elastic airbag, so that the partition board moves to between the target water receiving tray and the next water receiving tray; wherein, the next water receiving tray represents the water receiving tray in the adjacent soil layer below the target soil layer.

[0007] Optionally, the soil water collection device further comprises: a magnetic trigger and a magnetic inductor; the magnetic trigger is arranged at the edge of the partition board, and each water receiving tray is provided with a magnetic inductor; all the magnetic inductors are communicatively connected to the controller; when the partition board moves with the magnetic trigger into the sensing range of the target magnetic inductor, the target magnetic inductor sends an induction signal to the controller, so that the controller determines the position of the partition board in the well based on the induction signal.

[0008] Optionally, the soil water collection device further comprises: a pressure sensor; the pressure sensor is arranged on the surface of the partition board and is communicatively connected to the controller; the pressure sensor is used for measuring the water level data in the monitoring well and sending the water level data to the controller.

[0009] Optionally, each water receiving tray is further provided with: a water quality sensor; the water quality sensor is connected to the controller and is used for detecting the water quality of the soil water in the water receiving tray and sending the water quality data to the controller.

[0010] Optionally, the multiple water receiving trays are staggeredly distributed in the vertical direction.

[0011] Optionally, the water guide pipe includes: a sewage conduit and a soil water conduit; after the monitoring well is cleaned, the water pump extracts the sewage in the monitoring well through the sewage conduit; when collecting the water sample of the target soil layer, the water pump extracts the water sample in the monitoring well through the soil water conduit.

[0012] Optionally, an inert gas is provided inside the inflator.

[0013] In a second aspect, the present invention provides a method for collecting soil water, which is applied to the soil water collection device in any one of the foregoing embodiments, and includes: before collecting the water sample of the target soil layer, controlling the highly elastic airbag to inflate and deflate repeatedly so that the partition plate moves up and down in the monitoring well, and at the same time controlling the rotary motor to rotate to drive the cleaning brush to clean the well wall. After the cleaning is completed, controlling the water pump to extract the sewage in the monitoring well; when it is determined that the water sample of the target soil layer is to be collected, controlling the drain switch on the target water receiving tray in the target soil layer to open so that the soil water in the target water receiving tray flows into the monitoring well; wherein, the target soil layer represents any one of all soil layers; after a preset time period, controlling the water pump to extract the water sample in the monitoring well.

[0014] The soil water collection device provided by the present invention relies on geological drilling technology to drill wells in the soil layer of the area to be measured. A water receiving tray is inserted into each soil layer through the monitoring well, and holes are opened in the well wall so that the water sample in the water receiving tray of the target soil layer flows into the monitoring well when the drain switch is opened. Then, the water in the monitoring well is extracted by the water pump to complete the collection of the water sample of the target soil layer. The device minimizes the impact on the soil structure of the area to be measured, improves the problem of large soil damage caused by the traditional leaching bucket method, and the problem of being unable to consider the influence of horizontal water movement. Thus, it effectively alleviates the technical problem that the existing soil water collection device cannot guarantee the accuracy of the soil water analysis result. Moreover, by collecting the water samples of different soil layers, it is also possible to realize the full-profile monitoring of the water movement in the soil layer. Description of the Drawings

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 Schematic diagram of the principle for realizing soil water collection by the leaching bucket method;

[0017] Figure 2 Schematic diagram of the structure of a soil water collection device provided by an embodiment of the present invention;

[0018] Figure 3 Schematic diagram of the structure of a soil water collection device with a movable partition provided by an embodiment of the present invention;

[0019] Figure 4 Schematic diagram of the structure of a soil water collection device with a cleaning function provided by an embodiment of the present invention.

[0020] Reference numerals: 100 - monitoring well; 101 - controller; 102 - water pump; 103 - water conduit; 104 - partition; 105 - water receiving tray; 106 - drainage switch; 107 - inflator; 108 - air conduit; 109 - highly elastic airbag; 110 - magnetic trigger; 111 - magnetic inductor; 112 - rotating motor; 113 - cleaning brush; 114 - pressure sensor; 115 - water quality sensor. Specific embodiments

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0023] The following will, with reference to the drawings, elaborate on some embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0024] Embodiment 1

[0025] Figure 2 This is a schematic structural diagram of a soil water collection device provided by an embodiment of the present invention. As Figure 2 shown, the device includes: a monitoring well 100, a controller 101, a water pump 102, a water conduit 103, a partition 104, and a plurality of water receiving trays 105; a drainage switch 106 is provided on each water receiving tray 105, and the drainage switch 106 is default in a closed state.

[0026] Using geological drilling technology to drill a well in the soil layer of the area to be measured, the monitoring well 100 is obtained, and a wellbore opening is set for each soil layer on the well wall.

[0027] A water receiving tray 105 is inserted into each soil layer through the monitoring well 100, and the drainage switch 106 of the water receiving tray 105 is connected to the wellbore opening of its corresponding soil layer.

[0028] One end of the water conduit 103 is connected to the water pump 102, and the other end is in contact connection with the surface of the partition 104; the partition 104 is arranged at the bottom of the monitoring well 100 and is tightly connected to the well wall; the water pump 102 is arranged on the ground surface of the monitoring well 100.

[0029] The controller 101 is respectively connected to the water pump 102 and the drainage switch 106.

[0030] In the case of determining to collect the water sample of the target soil layer, the controller 101 controls the drainage switch on the target water receiving tray in the target soil layer to open, so that the soil water in the target water receiving tray flows into the monitoring well 100, and after a preset time period, controls the water pump 102 to extract the water sample in the monitoring well 100; wherein, the target soil layer represents any one of all soil layers.

[0031] In view of the problem of great damage to the soil structure when collecting soil water by the leaching bucket method, the embodiment of the present invention proposes to rely on geological drilling technology to drill a well in the soil layer of the area to be measured, and then insert a water receiving tray 105 into each soil layer through the monitoring well 100. The water receiving tray 105 is used to store the water infiltrated from the ground into the soil layer, and a wellbore opening is set for each soil layer on the well wall to provide a channel for the soil water stored in the water receiving tray 105 to flow into the monitoring well 100. Obviously, compared with the method of first excavating a pit with a certain depth in the area to be measured, then placing a leaching bucket and finally backfilling the soil, the soil water collection device of this embodiment can reduce the damage to the soil structure and avoid the change of soil properties, thus ensuring the accuracy of the soil water analysis results.

[0032] To collect the water sample of the target soil layer, the controller 101 first controls the drainage switch 106 on the water collecting tray 105 in the soil layer to open, so that the soil water in the water collecting tray 105 flows into the monitoring well 100 through the opening in the well wall. In the embodiment of the present invention, a partition plate 104 is provided at the bottom of the monitoring well 100, and the partition plate 104 is tightly connected to the well wall to prevent the soil water flowing into the monitoring well 100 from leaking through the gap between the partition plate 104 and the well wall. After a preset time period, it can be considered that the drainage volume of the target water collecting tray reaches the preset sampling requirement, then the water pump 102 is started, and the water sample in the monitoring well 100 is extracted through the water conduit 103. This collecting device can place the water samples of different soil layers in different sampling bottles and then send them to the laboratory for further testing uniformly.

[0033] The existing leaching bucket method can only collect the soil water in a specific area. The device provided by the present invention can set a water collecting tray 105 for each soil layer. Therefore, by separately collecting the soil water in each water collecting tray 105, the layered collection of the soil water in the area to be measured can be completed, so as to realize the full-profile monitoring of the water movement in the soil layer.

[0034] In the embodiment of the present invention, the connection between the controller 101 and other structures in the device can be a wired connection or a wireless connection. The embodiment of the present invention does not specifically limit its connection method, and the user can set it according to actual needs. Optionally, the controller 101 is implemented by a single-chip microcomputer. By pre-writing a control program, the automatic collection of the soil water of all soil layers can be realized, reducing the complexity of manual operation, improving work efficiency, reducing labor costs, and avoiding human errors.

[0035] The soil water collecting device provided by the embodiment of the present invention relies on geological drilling technology to drill wells in the soil layer of the area to be measured, inserts a water collecting tray 105 in each soil layer through the monitoring well 100, and opens an opening in the well wall so that the water sample in the water collecting tray 105 of the target soil layer flows into the monitoring well 100 when the drainage switch 106 is opened, and then the water in the monitoring well 100 is extracted by the water pump 102 to complete the collection of the water sample of the target soil layer. This device maximally reduces the impact on the soil structure of the area to be measured, improves the problems of large soil damage and inability to consider the influence of lateral water movement in the traditional leaching bucket method, and thus effectively alleviates the technical problem that the existing soil water collecting device cannot guarantee the accuracy of the soil water analysis result. And by collecting the water samples of different soil layers, the full-profile monitoring of the water movement in the soil layer can also be realized.

[0036] In an optional embodiment, as Figure 3 shown, the soil water collecting device further includes: an air inflator 107 and a water conduit 108.

[0037] The inflator 107 is connected to the highly elastic airbag 109 through an air duct 108, and the inflator 107 is arranged on the ground surface of the monitoring well 100.

[0038] The controller 101 is connected to the inflator 107. Before the controller 101 controls the drain switch 106 on the target water receiving tray 105 in the target soil layer to open, the controller 101 is further configured to control the inflator 107 to inflate / deflate the highly elastic airbag 109, so that the partition plate 104 moves between the target water receiving tray and the next water receiving tray; wherein, the next water receiving tray refers to the water receiving tray in the adjacent soil layer below the target soil layer.

[0039] Considering the situation of a large number of soil layers and a relatively deep monitoring well 100, if the water in the water receiving tray 105 in the soil layer close to the ground drains into the monitoring well 100, then since the distance between the water receiving tray 105 and the bottom of the monitoring well 100 is relatively far, the soil water drained from the water receiving tray 105 needs to travel a long distance to reach the bottom of the well, and inevitably a large amount of soil water will splash onto the well wall, resulting in waste of soil water samples.

[0040] To solve the above problems, the embodiment of the present invention adds an inflator 107, an air duct 108 and a highly elastic airbag 109 to the device. If the inflator 107 is used to inflate the highly elastic airbag 109, the highly elastic airbag 109 can be inflated, and then the partition plate 104 on its top can be pushed to move upward; if the inflator 107 is used to deflate the highly elastic airbag 109, the highly elastic airbag 109 can be contracted, and then the partition plate 104 on its top can be pulled to move downward. Optionally, in order to improve the safety of the soil water collection device, an inert gas is provided in the inflator 107.

[0041] When it is determined to collect the soil water in the target soil layer, the controller 101 inflates / deflates the highly elastic airbag 109 according to the current position of the partition plate 104, so that the partition plate 104 moves between the target water receiving tray and the next water receiving tray, thereby shortening the distance for the soil water in the target soil layer to reach the partition plate 104, reducing water sample splashing, and avoiding waste of water samples.

[0042] The corresponding relationship between the inflation / deflation amount of the highly elastic airbag 109 and the moving distance of the partition plate 104 can be determined by actual measurement before starting the sampling, or alternatively, a ranging sensor communicatively connected to the controller 101 can be placed on the partition plate 104 to report the position of the partition plate 104 underground.

[0043] In an optional embodiment, the soil water collection device further includes: a magnetic trigger 110 and a magnetic inductor 111.

[0044] The magnetic trigger 110 is arranged at the edge of the partition plate 104, and a magnetic inductor 111 is arranged on each water receiving tray 105.

[0045] All magnetic sensors 111 are communicatively connected to the controller 101.

[0046] When the partition 104 moves the magnetic trigger 110 into the sensing range of the target magnetic sensor, the target magnetic sensor sends a sensing signal to the controller 101, so that the controller 101 determines the position of the partition 104 underground based on the sensing signal.

[0047] The combination of the magnetic trigger 110 and the magnetic sensor 111 can be used to determine the position of the partition 104 underground. Taking the case where the area to be measured has two soil layers as an example, when it is necessary to collect the water sample in the water collecting tray of the lower soil layer (denoted as the lower water collecting tray), keep the partition 104 at the bottom of the monitoring well 100 (that is, below the lower water collecting tray). The controller 101 controls the drain switch 106 of the lower water collecting tray to open, and the stored water flows into the monitoring well 100. After the drainage ends after a preset time period, the controller 101 issues a command to pump the water at the bottom of the monitoring well 100 through the water conduit 103 to complete the preservation of the water sample of the lower soil layer.

[0048] After collecting the water sample of the lower soil layer, the water in the monitoring well 100 is emptied. The inflator 107 inflates the highly elastic airbag 109 through the air duct 108, so that the partition 104 slowly moves upward along the monitoring well 100. When the partition 104 moves near the lower water collecting tray, the magnetic sensor 111 in the lower water collecting tray and the magnetic trigger 110 on the partition 104 are within the effective sensing distance. At this time, the controller 101 will receive the sensing signal sent by the magnetic sensor 111, and the staff can determine that the position of the partition 104 in the monitoring well 100 is at the lower water collecting tray. The inflator 107 continues to inflate to make the partition 104 continue to rise. When the distance between the magnetic trigger 110 and the magnetic sensor 111 in the lower water collecting tray is greater than the effective sensing distance, and the partition 104 has not moved into the sensing range of the magnetic sensor 111 in the upper water collecting tray (the water collecting tray of the upper soil layer), the phenomenon shown is that the sensing signal received by the controller 101 changes from having to having no signal. From this, it can be determined that the partition 104 is currently between the lower water collecting tray and the upper water collecting tray. At this time, stop inflating and keep the partition 104 at this position. According to the sampling process described above, collect the water sample in the upper water collecting tray.

[0049] The embodiments of the present invention do not specifically limit the sampling order of the soil water samples, and users can set it according to actual needs, which can be from top to bottom or from bottom to top.

[0050] In an optional embodiment, as Figure 4 shown, the soil water collection device further includes: a rotary motor 112 and a cleaning brush 113.

[0051] The bottom of the rotary motor 112 is detachably connected to the partition plate 104, and a cleaning brush 113 is arranged around the rotary motor 112; the cleaning brush 113 is in contact connection with the well wall.

[0052] The controller 101 is connected to the rotary motor 112. After determining to clean the monitoring well 100 and inject water into the monitoring well 100, the controller 101 controls the inflator 107 to repeatedly inflate and deflate the highly elastic airbag 109, so that the partition plate 104 moves up and down in the monitoring well 100. At the same time, the controller 101 controls the rotary motor 112 to rotate to drive the cleaning brush 113 to clean the well wall.

[0053] After reaching the preset cleaning duration, the controller 101 controls the inflator 107 to deflate the highly elastic airbag 109, and at the same time controls the rotary motor 112 to stop rotating, so that the partition plate 104 returns to the bottom of the well. Then the controller 101 controls the water pump 102 to extract the sewage in the monitoring well 100.

[0054] Considering that the monitoring well 100 is in a dark and humid environment for a long time, if water samples are not collected for a long time, then fluff will grow on the well wall of the monitoring well 100, which will cause pollutants to accumulate on the fluff on the well wall. In order to ensure the cleanliness of the collected water samples and reduce the risk of the collected water samples being contaminated. In the embodiment of the present invention, a rotary motor 112 and a cleaning brush 113 are also added to the collection device to have the function of cleaning the fluff on the well wall. By regularly cleaning and maintaining the well wall, the well wall is kept clean and smooth, and the problem that the detection data is inaccurate due to the water sample being contaminated is avoided.

[0055] Specifically, the bottom of the rotary motor 112 is detachably connected to the partition plate 104. Before cleaning the well wall, the rotary motor 112 with a cleaning brush 113 around it is installed on the partition plate 104. After cleaning the well wall, the rotary motor 112 can be detached from the partition plate 104 to avoid affecting the water sample collection.

[0056] Optionally, the process of cleaning the well wall is as follows: the highly elastic airbag 109 deflates and shrinks to the bottom of the monitoring well 100 to ensure that the partition plate 104, the rotary motor 112, etc. are all at the bottom position of the monitoring well 100. A large amount of clean water is injected into the monitoring well 100 through the water conduit 103. A pressure sensor can also be set above the rotary motor 112 to detect the height of the water body in real time to ensure that the height of the water is higher than the position of the rotary motor 112. Next, the controller 101 controls the rotary motor 112 to rotate in both forward and reverse directions to drive the cleaning brush 113 to clean the impurities on the well wall. While the cleaning brush 113 is cleaning the well wall, the inflator 107 slowly inflates the highly elastic airbag 109 through the air conduit 108 to push the partition plate 104 upward, so that the cleaning brush 113 rotates continuously and cleans the well wall from bottom to top.

[0057] After moving to the upper part of the monitoring well 100 from the bottom, control the inflator 107 to exhaust the highly elastic airbag 109, so that the cleaning brush 113 moves from top to bottom to complete the work of cleaning the well wall again. During the cleaning process, the up-and-down movement can be stopped, the rotation of the rotating motor 112 is paused, the turbid water polluted by impurities is pumped and discharged through the water guide pipe 103, clean water is re-injected, and then the work of cleaning the well wall is started to achieve thorough cleaning of the well wall. According to the actual situation of fluff or other impurities polluting the well wall, multiple up-and-down reciprocating motions can be performed. Finally, after the water body is pumped out, the cleaning of the entire well wall is completed.

[0058] In order to further avoid the pollution of soil water by the collection environment, in an optional implementation manner, the water guide pipe 103 includes: a sewage conduit and a soil water conduit. After cleaning the monitoring well 100, the water pump 102 pumps the sewage in the monitoring well 100 through the sewage conduit; when collecting the water sample of the target soil layer, the water pump 102 pumps the water sample in the monitoring well 100 through the soil water conduit.

[0059] In an optional implementation manner, the soil water collection device further includes: a pressure sensor 114.

[0060] The pressure sensor 114 is arranged on the surface of the partition 104 and is communicatively connected to the controller 101.

[0061] The pressure sensor 114 is used to measure the water level data in the monitoring well 100 and send the water level data to the controller 101.

[0062] The pressure sensor 114 is used to measure the water level height injected into the monitoring well 100 and feedback the water level data to the controller 101. Combining with the diameter of the monitoring well 100, the water volume can be determined. Optionally, when collecting soil water, the controller 101 can send a pumping command to the water pump 102 after determining that the water discharged from the water receiving tray 105 reaches the preset water volume.

[0063] In an optional implementation manner, a water quality sensor 115 is further arranged in each water receiving tray 105.

[0064] The water quality sensor is connected to the controller 101 and is used to detect the water quality of the soil water in the water receiving tray 105 and send the water quality data to the controller 101.

[0065] After a water quality sensor is set in each water receiving tray 105, each water quality sensor can perform real-time water quality detection on the soil water in the water receiving tray 105. For example, after agricultural irrigation, water migrates and diffuses from top to bottom in the soil. When it seeps through the first soil layer, the water receiving tray 105 in the soil layer will intercept and collect the infiltrated water. The water quality sensors 115 distributed on the water receiving tray 105 can start working after contacting the soil water, detect the water quality, and transmit the water quality data to the controller 101 for storage. Similarly, the water receiving tray 105 in the second soil layer intercepts and collects the soil water that has infiltrated into the layer. The water quality sensor performs water quality detection on the soil water collected in the water receiving tray 105 in real time, obtains water quality data and sends it to the controller 101. Based on this, the soil water collection device can realize in-situ real-time detection of soil water and water sample collection, effectively improving the efficiency of soil water collection and analysis. Moreover, in-situ water quality detection can improve the accuracy of water quality detection results compared with water quality detection after sampling.

[0066] In the embodiment of the present invention, in order to prevent the water storage in the upper water receiving tray 105 from affecting the water penetration in the lower soil layer, and further affecting the water quality of the soil water in the lower water receiving tray 105, in an optional implementation, multiple water receiving trays 105 are staggered in the vertical direction. That is, the positions of any two water receiving trays 105 in the vertical direction do not overlap. For example, if two water receiving trays 105 are set, they can be placed left and right (180 degrees apart), if there are three water receiving trays 105, they can be 120 degrees apart, if there are four water receiving trays 105, they can be 90 degrees apart, and so on.

[0067] In summary, the embodiments of the present invention combine soil moisture collection with geological drilling technology, and pioneered an in-situ real-time collection method and device for water quality information of the entire soil profile, breaking through the constraints of traditional methods such as large soil disturbance, poor accuracy, and data lag, and the device can realize automated water sample collection and detection processes, reducing the complexity of manual operations, improving work efficiency, and reducing human errors. By being equipped with high-precision sensors and detection technology, it is possible to monitor and record water quality parameters in the soil in real time in situ, providing reliable data support for scientific research and geological environment management.

[0068] Embodiment 2

[0069] The embodiment of the present invention further provides a soil water collection method, which is applied to the soil water collection device provided in the above embodiment 1. The soil water collection method provided in the embodiment of the present invention is specifically introduced below. The method specifically includes the following contents:

[0070] When it is determined to collect a water sample from the target soil layer, control the drainage switch on the target water collection tray in the target soil layer to open, so that the soil water in the target water collection tray flows into the monitoring well; wherein, the target soil layer represents any one of all soil layers; after a preset time period, control the water pump to extract the water sample in the monitoring well.

[0071] The method and principle of collecting soil water by using the soil water collection device have been described in detail above, and will not be elaborated here.

[0072] In addition, in each embodiment of the present invention, each functional unit may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0073] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. 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, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0074] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0075] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and may 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 situations.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A soil water collection device, characterized in that: include: A monitoring well, a controller, a water pump, a water pipe, a baffle, a high-elastic airbag, a rotating motor, a cleaning brush and a plurality of water receiving trays; each of the water receiving trays is provided with a drainage switch, and the drainage switch is in a closed state by default; Using geological drilling technology to dig a well in the soil layer of the area to be tested to obtain the monitoring well, and setting a well wall opening on the well wall for each soil layer; A water receiving tray is inserted into each soil layer through the monitoring well, and the drainage switch of the water receiving tray is connected to the well wall opening of the soil layer where the water receiving tray is located; One end of the water pipe is connected to the water pump, and the other end is in contact with the surface of the partition; the partition is arranged at the bottom of the monitoring well and is tightly connected to the well wall; the water pump is arranged on the surface of the monitoring well; the high elastic airbag is arranged below the partition; the bottom of the rotating motor is detachably connected to the partition, and the cleaning brush is arranged around the rotating motor; the cleaning brush is in contact with the well wall; The controller is connected to the water pump and the drainage switch respectively; Before collecting water samples from the target soil layer, the controller controls the high-elastic airbag to repeatedly inflate and deflate so that the partition moves up and down in the monitoring well, and at the same time controls the rotation of the rotary motor to drive the cleaning brush to clean the well wall. After the cleaning is completed, the pump is controlled to extract the sewage in the monitoring well; When it is determined that water samples of the target soil layer are to be collected, the controller controls the drainage switch on the target water receiving tray in the target soil layer to open, so that the soil water in the target water receiving tray flows into the monitoring well, and after a preset time period, controls the pump to extract water samples from the monitoring well; wherein the target soil layer represents any soil layer among all soil layers.

2. The soil water collection device according to claim 1, characterized in that: The soil water collection device also includes: an aerator and an air guide tube; The inflator is connected to the high-elasticity airbag through the air guide tube, and the inflator is arranged on the surface of the monitoring well; The controller is connected to the inflator. Before the controller controls the drainage switch on the target water receiving tray in the target soil layer to open, the controller is also used to control the inflator to inflate / deflate the high-elasticity airbag so that the partition moves between the target water receiving tray and the next water receiving tray; wherein the next water receiving tray refers to the water receiving tray in the adjacent soil layer below the target soil layer.

3. The soil water collection device according to claim 2, characterized in that: The soil water collection device also includes: a magnetic trigger and a magnetic sensor; The magnetic trigger is arranged on the edge of the partition, and each water receiving tray is provided with a magnetic sensor; All of the magnetic sensors are in communication connection with the controller; When the diaphragm carrying the magnetic trigger moves into the sensing range of the target magnetic sensor, the target magnetic sensor sends a sensing signal to the controller, so that the controller determines the position of the diaphragm in the well based on the sensing signal.

4. The soil water collection device according to claim 1, characterized in that: The soil water collection device further comprises: a pressure sensor; The pressure sensor is arranged on the surface of the partition and is in communication connection with the controller; The pressure sensor is used to measure the water level data in the monitoring well and send the water level data to the controller.

5. The soil water collection device according to claim 1, characterized in that: Each of the water receiving trays is also provided with: a water quality sensor; The water quality sensor is connected to the controller and is used for detecting the water quality of soil water in the water receiving tray and sending water quality data to the controller.

6. The soil water collection device according to claim 1, characterized in that: The plurality of water receiving trays are staggered and distributed in a vertical direction.

7. The soil water collection device according to claim 1, characterized in that: The water conduit comprises: a sewage conduit and a soil water conduit; After the monitoring well is cleaned, the pump extracts the sewage in the monitoring well through the sewage conduit; When collecting water samples from the target soil layer, the water pump extracts the water samples from the monitoring well through the soil water conduit.

8. The soil water collection device according to claim 2, characterized in that: An inert gas is arranged in the inflator.

9. A soil water collection method, characterized in that: The soil water collection device used in any one of claims 1 to 8 comprises: Before collecting water samples from the target soil layer, the high-elastic airbag is controlled to be repeatedly inflated and deflated so that the partition moves up and down in the monitoring well, and the rotary motor is controlled to rotate to drive the cleaning brush to clean the well wall. After the cleaning is completed, the pump is controlled to extract the sewage in the monitoring well; When it is determined that a water sample of a target soil layer is to be collected, a drainage switch on a target water receiving tray in the target soil layer is controlled to be turned on so that soil water in the target water receiving tray flows into a monitoring well; wherein the target soil layer refers to any soil layer among all soil layers; After a preset time period, the pump is controlled to extract water samples from the monitoring well.

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