Soil water collecting device and method

Abstract

The invention provides a soil water collecting device and method, and relates to the technical field of geological environment monitoring. A well is dug in a soil layer of a to-be-monitored area by means of a geological drilling technology, and a water pan is inserted into each soil layer through a monitoring well; a hole is formed in the well wall, so that a water sample in the target soil layer water pan flows into the monitoring well when the drainage switch is turned on, and water in the monitoring well is pumped through the water pumping device, so that water sample collection of the target soil layer can be completed. According to the soil water collecting device, the influence on the soil structure of the to-be-detected area is reduced to the maximum extent, the problem that a traditional leaching barrel method has great damage to soil is solved, and the problem that the influence of transverse movement of water cannot be considered is solved; therefore, the technical problem that an existing soil water collecting device cannot guarantee the accuracy of a soil water analysis result is effectively relieved, and moreover, by collecting water samples of different soil layers, full-profile monitoring of soil layer water migration can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of geological environment monitoring, and in particular 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 has become particularly important. As an important part of the geological environment, soil moisture has a significant impact on the stability of the ecosystem and biodiversity. Soil water monitoring technology can monitor the dynamic changes of soil moisture in real time and provide data support for the monitoring and protection of the geological environment. At the same time, by monitoring the changes in soil moisture, it is also possible to promptly detect problems such as soil pollution and degradation, which is of great significance for protecting land resources and maintaining ecological balance.

[0003] Figure 1 This is a schematic diagram of the principle of soil water collection using the leaching bucket method. Figure 1 As shown, the leaching bucket method is to artificially set up a leaching bucket to collect the leaching solution in the soil above it 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, and the moisture and solutes in the soil above infiltrate into the leaching bucket under the action of gravity, and then are collected and analyzed. However, due to the setting of the liquid collection membrane, the leaching bucket method cannot consider the influence of lateral migration of water, and the placement and sampling operations of the leaching bucket will cause a large degree of damage to the soil structure, affect the natural state of the soil, and cause changes in soil properties, thereby affecting the accuracy of the soil water analysis results. In summary, the existing soil water collection device has the technical problem of being unable to guarantee the accuracy of the soil water analysis results. Summary of the invention

[0004] The object 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 device cannot guarantee the accuracy of soil water analysis results.

[0005] In the first aspect, the present invention provides a soil water collection device, comprising: a monitoring well, a controller, a water pump, a water pipe, a partition, a high-elasticity airbag, a rotating 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 in a closed state by default; a well is drilled in the soil layer of the area to be measured by using geological drilling technology to obtain a monitoring well, and a well wall opening is provided 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 it 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-elasticity airbag is arranged below the partition; The bottom is detachably connected to the partition, and a cleaning brush is arranged around the rotating motor; the cleaning brush is in contact with the well wall; the controller is respectively connected to the water pump and the drainage switch; 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 rotating motor to drive the cleaning brush to clean the well wall, and after the cleaning is completed, the water pump is controlled 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, 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 water pump is controlled to extract the water sample in the monitoring well; wherein, the target soil layer represents any soil layer among all soil layers.

[0006] Optionally, the soil water collection device also includes: an inflator and an air duct; the inflator is connected to the high-elasticity airbag via the air duct, and the inflator is arranged on the surface of the monitoring well; a controller is connected to the 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 also used to control the inflator to inflate / deflate the high-elasticity airbag so that the partition moves to 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.

[0007] Optionally, the soil water collection device also includes: a magnetic trigger and a magnetic sensor; the magnetic trigger is arranged at the edge of the partition, and a magnetic sensor is arranged on each water receiving tray; all magnetic sensors are communicatively connected to the controller; when the partition 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 partition in the well based on the sensing signal.

[0008] Optionally, the soil water collection device also includes: a pressure sensor; the pressure sensor is arranged on the surface of the partition and is communicatively connected 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.

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

[0010] Optionally, the plurality of water receiving trays are staggered in the vertical direction.

[0011] Optionally, the water conduit includes: 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 pump extracts the water samples in the monitoring well through the soil water conduit.

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

[0013] In a second aspect, the present invention provides a soil water collection method, which is applied to the soil water collection device of any one of the aforementioned embodiments, including: before collecting water samples from the target soil layer, controlling the high-elasticity airbag to be repeatedly inflated and deflated so that the partition moves up and down in the monitoring well, and at the same time controlling the rotation of the rotating motor to drive the cleaning brush to clean the well wall, and after the cleaning is completed, controlling the 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 drainage switch on the target water receiving tray in the target soil layer to be opened, so that the soil water in the target water receiving tray flows into the monitoring well; wherein the target soil layer represents any soil layer among all soil layers; after a preset time period, controlling the 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 dig wells in the soil layer of the area to be tested, inserts a water receiving tray into each soil layer through the monitoring well, and opens a hole 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 turned on, and then the water in the monitoring well is extracted by a pump to complete the water sample collection of the target soil layer. The device minimizes the impact on the soil structure of the area to be tested, improves the problem of the traditional leaching bucket method being highly destructive to the soil, and the problem of being unable to consider the impact of the lateral migration of water, thereby effectively alleviating the technical problem of the existing soil water collection device that cannot guarantee the accuracy of the soil water analysis results, and by collecting water samples from different soil layers, it can also achieve full-profile monitoring of the migration of water in the soil layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the principle of soil water collection using the leaching bucket method; Figure 2 A schematic diagram of the structure of a soil water collection device provided by an embodiment of the present invention; Figure 3 A schematic structural diagram of a soil water collection device with a movable partition provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a soil water collection device with a cleaning function provided by an embodiment of the present invention.

[0017] Icons: 100- monitoring well; 101- controller; 102- pump; 103- water pipe; 104- partition; 105- water tray; 106- drain switch; 107- inflator; 108- air pipe; 109- high elastic airbag; 110- magnetic trigger; 111- magnetic sensor; 112- rotating motor; 113- cleaning brush; 114- pressure sensor; 115- water quality sensor. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0021] Embodiment 1 Figure 2A schematic diagram of the structure of a soil water collection device provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, the device includes: a monitoring well 100, a controller 101, a pump 102, a water pipe 103, a partition 104 and a plurality of water receiving trays 105; each water receiving tray 105 is provided with a drainage switch 106, and the drainage switch 106 is in a closed state by default.

[0022] A well is drilled in the soil layer of the area to be monitored by using geological drilling technology to obtain a monitoring well 100, and a well wall opening is set on the well wall for each soil layer.

[0023] 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 well wall opening of the soil layer where the water receiving tray 105 is located.

[0024] One end of the water pipe 103 is connected to the water pump 102 , and the other end is in contact with the surface of the partition 104 ; the partition 104 is set at the bottom of the monitoring well 100 and is tightly connected to the well wall; the water pump 102 is set on the surface of the monitoring well 100 .

[0025] The controller 101 is connected to the water pump 102 and the drainage switch 106 respectively.

[0026] When it is determined that water samples of the target soil layer are to be collected, 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 pump 102 to extract water samples from the monitoring well 100; wherein the target soil layer represents any soil layer among all soil layers.

[0027] In view of the problem of great damage to soil structure when collecting soil water using the leaching bucket method, the embodiment of the present invention proposes to dig wells in the soil layer of the area to be tested by relying on geological drilling technology, and then insert a water receiving tray 105 into each soil layer through the monitoring well 100, use the water receiving tray 105 to store the water that penetrates into the soil layer from the ground, and set a well wall opening 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 digging a pit of a certain depth in the area to be tested, then placing a leaching bucket and finally backfilling the soil, the soil water collection device of this embodiment can reduce the destructiveness to the soil structure and avoid changes in soil properties, thereby ensuring the accuracy of the soil water analysis results.

[0028] To collect water samples from the target soil layer, the controller 101 first controls the drainage switch 106 on the water receiving tray 105 in the soil layer to open, so that the soil water in the water receiving tray 105 flows into the monitoring well 100 through the openings in the well wall. In the embodiment of the present invention, a partition 104 is provided at the bottom of the monitoring well 100, and the partition 104 is tightly connected to the well wall to prevent the soil water flowing into the monitoring well 100 from leaking from the gap between the partition 104 and the well wall. After a preset time period, it can be considered that the drainage volume of the target water receiving tray meets the preset sampling requirements, and the pump 102 is started to extract water samples from the monitoring well 100 through the water pipe 103. The collection device can place water samples from different soil layers in different sampling bottles, and then send them to the laboratory for further testing.

[0029] The existing leaching bucket method can only collect soil water in a specific area. The device provided by the present invention can set a water collection tray 105 for each soil layer. Therefore, by collecting the soil water in each water collection tray 105 separately, the stratified collection of soil water in the test area can be completed, thereby realizing full-profile monitoring of soil layer water migration.

[0030] 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 the connection mode, 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 soil water of all soil layers can be automatically collected, the complexity of manual operation can be reduced, the work efficiency can be improved, the labor cost can be reduced, and human errors can be avoided.

[0031] The soil water collection device provided in the embodiment of the present invention relies on geological drilling technology to dig wells in the soil layer of the area to be tested, inserts a water receiving tray 105 in each soil layer through the monitoring well 100, and opens a hole in the well wall so that the water sample in the water receiving tray 105 of the target soil layer flows into the monitoring well 100 when the drainage switch 106 is turned on, and then the water in the monitoring well 100 is extracted by the pump 102 to complete the water sample collection of the target soil layer. The device minimizes the impact on the soil structure of the area to be tested, improves the problem of the traditional leaching bucket method being highly destructive to the soil, and the problem of being unable to consider the impact of the lateral migration of water, thereby effectively alleviating the technical problem of the existing soil water collection device that cannot guarantee the accuracy of the soil water analysis results, and by collecting water samples from different soil layers, it can also achieve full-profile monitoring of soil layer water migration.

[0032] In an alternative embodiment, Figure 3 As shown, the soil water collection device further includes: an aerator 107 and an air guide tube 108 .

[0033] The inflator 107 is connected to the high elastic airbag 109 via an air guide tube 108 , and the inflator 107 is disposed on the surface of the monitoring well 100 .

[0034] The controller 101 is connected to the inflator 107. Before the controller 101 controls the drainage switch 106 on the target water receiving tray 105 in the target soil layer to open, the controller 101 is also used to control the inflator 107 to inflate / deflate the high-elasticity airbag 109 so that the partition 104 moves to 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.

[0035] Taking into account the situation that there are many soil layers and the monitoring well 100 is deep, if the water collecting pan 105 in the soil layer close to the ground drains water into the monitoring well 100, then since the water collecting pan 105 is far away from the bottom of the monitoring well 100, the soil water discharged from the water collecting pan 105 needs to travel a long distance to reach the bottom of the well, and it is inevitable that a large amount of soil water will splash onto the well wall, resulting in a waste of soil water samples.

[0036] In order to solve the above problems, the embodiment of the present invention adds an inflator 107, an air guide tube 108 and a high elastic airbag 109 to the device. If the inflator 107 is used to inflate the high elastic airbag 109, the high elastic airbag 109 can be expanded, thereby pushing the partition 104 on the top thereof to move upward; if the inflator 107 is used to deflate the high elastic airbag 109, the high elastic airbag 109 can be contracted, thereby pulling the partition 104 on the top thereof to move downward. In order to improve the safety of the soil water collection device, an inert gas can be optionally provided in the inflator 107.

[0037] When determining to collect soil water in the target soil layer, the controller 101 inflates / deflates the high-elasticity airbag 109 according to the current position of the partition 104, so that the partition 104 moves to 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 104, reducing water sample splashing, and avoiding water sample waste.

[0038] The correspondence between the inflation / deflation volume of the high-elasticity airbag 109 and the moving distance of the partition 104 can be determined through actual measurement before starting sampling, or a ranging sensor connected to the controller 101 can be placed on the partition 104 to realize the reporting of the underground position of the partition 104.

[0039] In an optional implementation, the soil water collection device further includes: a magnetic trigger 110 and a magnetic sensor 111 .

[0040] The magnetic trigger 110 is disposed on the edge of the partition 104 , and a magnetic sensor 111 is disposed on each water receiving tray 105 .

[0041] All magnetic sensors 111 are in communication connection with the controller 101 .

[0042] When the diaphragm 104 carrying the magnetic trigger 110 moves 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 diaphragm 104 in the well based on the sensing signal.

[0043] The combination of the magnetic trigger 110 and the magnetic sensor 111 can be used to determine the position of the partition 104 in the well. Taking the test area having two soil layers as an example, when it is necessary to collect water samples in the water receiving tray of the lower soil layer (recorded as the lower water receiving tray), the partition 104 is kept at the bottom of the monitoring well 100 (that is, below the lower water receiving tray), and the controller 101 controls the drainage switch 106 of the lower water receiving tray to open, so that the stored water flows into the monitoring well 100. After a preset time period, the drainage is completed, and the controller 101 issues a command to extract the water at the bottom of the monitoring well 100 through the water pipe 103 to complete the preservation of the water samples in the lower soil layer.

[0044] After the water sample collection of the lower soil layer is completed, the water in the monitoring well 100 is evacuated. The inflator 107 inflates the high elastic airbag 109 through the air guide tube 108, so that the partition 104 moves slowly upward along the monitoring well 100. When the partition 104 moves to the vicinity of the lower water receiving tray, the magnetic sensor 111 in the lower water receiving 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 receiving tray. The aerator 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 receiving tray is greater than the effective sensing distance, and the partition 104 has not moved to the sensing range of the magnetic sensor 111 in the upper water receiving tray (the upper soil layer water receiving tray), the phenomenon manifested is that the sensing signal received by the controller 101 changes from being present to being absent, thereby determining that the partition 104 is currently between the lower water receiving tray and the upper water receiving tray. At this time, stop inflating and keep the partition 104 in this position. According to the sampling process described above, collect water samples in the upper water receiving tray.

[0045] The embodiment of the present invention does not specifically limit the order of collecting soil water samples, and the user can set it according to actual needs, either from top to bottom or from bottom to top.

[0046] In an alternative embodiment, Figure 4 As shown, the soil water collection device further includes: a rotating motor 112 and a cleaning brush 113 .

[0047] The bottom of the rotating motor 112 is detachably connected to the partition 104 , and a cleaning brush 113 is arranged around the rotating motor 112 ; the cleaning brush 113 is in contact with and connected to the well wall.

[0048] The controller 101 is connected to the rotating motor 112. After determining to clean the monitoring well 100 and injecting water into the monitoring well 100, the controller 101 controls the inflator 107 to repeatedly inflate and deflate the high-elasticity airbag 109 to make the partition 104 move up and down in the monitoring well 100. At the same time, the controller 101 controls the rotating motor 112 to rotate to drive the cleaning brush 113 to clean the well wall.

[0049] After reaching the preset cleaning time, the controller 101 controls the inflator 107 to deflate the high-elasticity airbag 109 and controls the rotating motor 112 to stop rotating so that the partition 104 returns to the bottom of the well. Then the controller 101 controls the pump 102 to extract the sewage in the monitoring well 100.

[0050] 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, fluff will grow on the wall of the monitoring well 100, which will cause pollutants to accumulate on the wall. In order to ensure the cleanliness of the collected water samples and reduce the risk of contamination of the collected water samples. The embodiment of the present invention also adds a rotating motor 112 and a cleaning brush 113 to the collection device to have the function of cleaning the fluff on the wall. By regularly cleaning and maintaining the wall, the wall can be kept clean and smooth to avoid the problem of inaccurate detection data due to contamination of water samples.

[0051] Specifically, the bottom of the rotating motor 112 is detachably connected to the partition 104. Before cleaning the well wall, the rotating motor 112 with a cleaning brush 113 around it is installed on the partition 104. After cleaning the well wall, the rotating motor 112 can be removed from the partition 104 to avoid affecting the water sample collection.

[0052] Optionally, the process of cleaning the well wall is as follows: the high elastic airbag 109 is deflated and retracted to the bottom of the monitoring well 100, ensuring that the partition 104 and the rotating motor 112 are at the bottom of the monitoring well 100 at the same time, and a large amount of clean water is injected into the monitoring well 100 through the water pipe 103. A pressure sensor can also be set on the upper part of the rotating motor 112 to detect the height of the water in real time to ensure that the water height is higher than the position of the rotating motor 112. Next, the controller 101 controls the rotating motor 112 to rotate in both forward and reverse directions, driving 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 high elastic airbag 109 through the air pipe 108, pushing the partition 104 to move upward, so that the cleaning brush 113 rotates continuously and cleans the well wall from bottom to top.

[0053] After moving from the bottom to the upper part of the monitoring well 100, the inflator 107 is controlled to exhaust the high 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, and the rotation motor 112 can be suspended. The turbid water contaminated by impurities is extracted and discharged through the water pipe 103, and the clean water is re-injected, and the work of cleaning the well wall is started again to achieve a thorough cleaning of the well wall. According to the actual situation of the well wall lint or other impurities contamination, multiple up and down movements can be performed. Finally, after the water is extracted, the cleaning of the entire well wall is completed.

[0054] In order to further prevent soil water from being polluted by the collection environment, in an optional embodiment, the water pipe 103 includes: a sewage pipe and a soil water pipe. After the monitoring well 100 is cleaned, the pump 102 extracts the sewage in the monitoring well 100 through the sewage pipe; when collecting water samples of the target soil layer, the pump 102 extracts the water samples in the monitoring well 100 through the soil water pipe.

[0055] In an optional implementation, the soil water collection device further includes: a pressure sensor 114 .

[0056] The pressure sensor 114 is disposed on the surface of the partition 104 and is communicatively connected with the controller 101 .

[0057] The pressure sensor 114 is used to measure water level data in the monitoring well 100 and send the water level data to the controller 101 .

[0058] The pressure sensor 114 is used to measure the height of the water level injected into the monitoring well 100, and feed the water level data back to the controller 101. The water volume can be determined in combination with the diameter of the monitoring well 100. Optionally, when collecting soil water, the controller 101 can send a pumping command to the pump 102 after determining that the water discharged from the water receiving tray 105 reaches a preset water volume.

[0059] In an optional implementation, each water receiving tray 105 is further provided with a water quality sensor 115 .

[0060] 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 .

[0061] 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.

[0062] 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.

[0063] 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.

[0064] Embodiment 2 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: When it is determined that water samples from the target soil layer are to be collected, the drainage switch on the target water receiving tray in the target soil layer is controlled 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 soil layer among all soil layers; after a preset time period, the pump is controlled to extract water samples from the monitoring well.

[0065] The method and principle of collecting soil water using a soil water collection device have been described in detail above and will not be repeated here.

[0066] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0067] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0068] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0069] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] 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 it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, 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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