Real-time detection device and method for groundwater solute concentration and flow direction

Abstract

The present disclosure proposes a real-time detection device and method for groundwater solute concentration and flow direction, the device includes a communication-connected water detection device and a data processing system; the water detection device includes a solute diffusion chamber, a gyro orientation device is arranged below the solute diffusion chamber, the solute diffusion chamber is used to diffuse and release tracer solutes and detect the tracer solute concentration, and the gyro orientation device is used to detect the direction of water flow. The water detection device I disclosed in the present disclosure can realize the simultaneous detection of groundwater solute concentration and water flow direction, and can control the solute delivery concentration, realizing intelligent delivery, and at the same time, a gyro orientation device is integrated at the bottom, and the water flow direction detection is integrated below the solute delivery device, thereby improving the integration of the device.

Description

Technical Field

[0001] The present disclosure relates to the technical field related to the field of water flow detection, and more specifically, to a real-time detection device and method for groundwater solute concentration and flow direction. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] The control of karst water gushing has become a top priority in engineering construction work. Therefore, it is necessary to first understand the impact of groundwater flow on hydrological and engineering geological conditions. The flow rate and direction of groundwater are related to the migration of solutes in underground rock and soil. The main means of water gushing control in karst areas is regional grouting. The diffusion of slurry has a significant impact on the grouting effect. Therefore, real-time detection of groundwater flow is related to the success or failure of karst water gushing control.

[0004] At present, the test methods for groundwater flow are pumping test and tracer test. In addition, there are many instruments and methods for measuring the flow direction and velocity of groundwater. The inventor found that the existing test equipment and methods have their own advantages and problems: the biggest advantage of the pumping test method is to measure the connectivity of groundwater in the area affected by pumping, which is convenient for calculating the permeability coefficient. The disadvantage is that it disturbs the original groundwater seepage field in the measured area, which is not conducive to obtaining the flow direction of groundwater; the biggest advantage of the tracer test method is that it can obtain the approximate runoff direction of groundwater in the measured area and the average flow velocity of the measured area. The disadvantage is that it takes many times to search for the boreholes for the tracer test, which is time-consuming and labor-intensive; there are also groundwater flow direction and velocity detection equipment and methods using microphotography and other similar methods. The biggest advantage is the visual detection of the environment in the borehole. The disadvantage is that the groundwater in the hole is turbid. Even if the groundwater in the hole can be clarified, the surrounding construction environment is required to be high during the detection. Therefore, higher requirements are put forward for the detection of the flow velocity and direction of groundwater in the borehole. Summary of the invention

[0005] In order to solve the above problems, the present disclosure proposes a real-time detection device and method for groundwater solute concentration and flow direction, which can realize the flow direction and flow characteristics of groundwater at different hole depths and provide technical guidance for finding the dominant water channel.

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

[0007] One or more embodiments provide a real-time detection device for groundwater solute concentration and flow direction, including a communication-connected water detection device and a data processing system; the water detection device includes a solute diffusion chamber, and a gyroscopic orientation device is arranged under the solute diffusion chamber. The solute diffusion chamber is used to diffuse and release tracer solutes and detect the tracer solute concentration, and the gyroscopic orientation device is used to detect the direction of water flow.

[0008] One or more embodiments provide a method for real-time detection of groundwater solute concentration and flow direction, comprising the following steps:

[0009] Lower the assembled water detection device to a predetermined position in the borehole to obtain the collected data;

[0010] According to the acquired solute concentration data, a solute concentration variation curve is obtained;

[0011] The slope change of the solute concentration change curve is calculated to obtain the permeability coefficient of the area near the borehole.

[0012] According to the first direction indicated by the gyroscopic orientation meter and the second direction indicated by the groundwater flow direction detection board, the angle between the first direction and the second direction is obtained, thereby determining the water flow direction.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The water detection device disclosed in the present invention can realize the simultaneous detection of groundwater solute concentration and water flow direction, and reversely calculate the permeability coefficient of the area according to the change of solute concentration over time. At the same time, a gyro orientation device is integrated at the lower end, and the water flow direction detection is integrated below the solute delivery device, thereby improving the integration of the device.

[0015] The present invention can characterize the permeability coefficient of the area near the borehole by real-time monitoring of the concentration of the solvent added according to the change in the slope of the concentration curve, and can dynamically design the grouting curtain for water gushing control in the mine excavation (mine) foundation pit based on the permeability coefficient.

[0016] The advantages of the present disclosure and the advantages of additional aspects will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure but do not constitute a limitation of the present disclosure.

[0018] Figure 1 is a schematic structural diagram of a water detection device I according to Embodiment 1 of the present disclosure;

[0019] Figure 2 is a schematic diagram of the structure of the transmission device II of Example 1 of the present disclosure;

[0020] Figure 3 is a schematic diagram of the structure of a handheld data processing device 15 according to Embodiment 1 of the present disclosure;

[0021] Figure 4 is a schematic structural diagram of a torque spring 5 according to Embodiment 1 of the present disclosure;

[0022] FIG5 (a) is a first structural schematic diagram of a spherical container 2 according to Embodiment 1 of the present disclosure;

[0023] FIG5( b ) is a second structural schematic diagram of the spherical container 2 of Embodiment 1 of the present disclosure;

[0024] Figure 6 is a schematic structural diagram of a directional hinge-connected groundwater flow direction detection plate according to Embodiment 1 of the present disclosure;

[0025] Wherein: 1. top cover, 2. spherical container, 3. groove, 4. gyro orientation chamber, 5. rod, 6. fixed lifting ring, 7. pull ring, 8. solute diffusion chamber, 9. solute concentration detection element, 9.1. connecting rod, 10. gyro orientation instrument, 11. groundwater flow direction detection plate, 12. protective mesh, 14. data cable, 15. handheld data processing equipment, 16. first hole;

[0026] 13.1, pin plug, 13.2, fixing nut, 13.3, water blocking sleeve;

[0027] 5.1. Directional hinge. 5.11. Directional hinge housing. DETAILED DESCRIPTION

[0028] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof. It should be noted that, in the absence of conflict, the various embodiments in the present disclosure and the features in the embodiments can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0031] Example 1

[0032] In the technical solutions disclosed in one or more embodiments, Figure 1-6 As shown, a real-time detection device for groundwater solute concentration and flow direction includes a communication-connected water detection device I and a data processing system III; the water detection device I includes a solute diffusion chamber 8, and a gyroscopic orientation device is arranged under the solute diffusion chamber 8. The solute diffusion chamber 8 is used to diffuse and release tracer solutes and detect the tracer solute concentration, and the gyroscopic orientation device is used to detect the direction of water flow.

[0033] The water detection device I of this embodiment can realize the monitoring of groundwater solute concentration and the simultaneous detection of water flow direction. At the same time, a gyro orientation device is integrated at the bottom, and the water flow direction detection is integrated below the solute delivery device, which improves the integration of the device. The probe device I is used to detect the real-time change of the concentration of the solute carried by itself under the flushing of groundwater flow, as well as the flow direction of the water flow. The data processing system III is configured to: process and analyze the received data, draw the concentration change curve over time, and obtain the flow direction of the water flow.

[0034] A further technical solution is that the solute diffusion chamber 8 includes an outer shell, a spherical container 2 arranged in the outer shell and a solute concentration detection element 9 arranged inside the spherical container, a first hole 16 is arranged on the spherical container 2, a convex rail is arranged on the outer side of the spherical container 2, a groove 3 is arranged on the inner side of the outer shell, the convex rail cooperates with the groove 3, and the spherical container 2 is placed in the outer shell through the groove 3.

[0035] The solute concentration detection element 9 of the solute diffusion chamber 8 first detects the initial concentration. As the water detection device I is flushed by the groundwater flow, the solute inside the spherical container 2 is washed away by the water flow, and the concentration gradually decreases. The permeability coefficient of the area is calculated based on the change of concentration over time.

[0036] When in use, the target solute is placed inside the spherical container 2. When the water detection device I is placed in the borehole, the solute diffuses out from the holes reserved around the spherical container 2 along with the flow of groundwater, and the solute concentration detection element 9 detects the solute concentration in the spherical container 2 in real time.

[0037] Optionally, as shown in FIG5 , which is a schematic diagram of the arrangement structure of the first hole 16 and the solute concentration detection element 9 , a plurality of first holes 16 may be arranged horizontally in a circle, and four holes are arranged in this embodiment.

[0038] Optionally, a solenoid valve may be provided in the first hole 16 to open and close the first hole 16 .

[0039] Furthermore, a remote control switch is included, and the solenoid valve is electrically connected to the remote control switch, and the first hole is opened or closed by controlling the remote control switch.

[0040] Optionally, a solute concentration detection element 9 is provided inside the spherical container 2 to detect the concentration inside the spherical container 2;

[0041] Optionally, the solute concentration detection element 9 is spherical or probe-shaped, and the detection element and the inner wall of the spherical container are connected by a connecting rod 9.1.

[0042] Optionally, as shown in FIG. 5 , the solute concentration detection element 9 may be provided one at the top and one at the bottom, and one at each of the four sides of the middle.

[0043] When in use, the solute concentration change can be measured in real time according to the solute concentration detection element 9 provided inside, so as to characterize the development of the fissures in the borehole and the connectivity of the fissures.

[0044] Optionally, a pull ring 7 is provided on the upper part of the spherical container 2, and the pull ring 7 is used to push the spherical container 2 into the solute diffusion chamber 8. A second hole is provided on the solute diffusion chamber 8. When the spherical container 2 is pushed into the solute diffusion chamber 8, the first hole 16 corresponds to the second hole, and the solute in the spherical container 2 diffuses from the hole into the external groundwater along with the water flow.

[0045] In this embodiment, the spherical container 2 is disposed in the shell, and the solvent is diffused into the shell for full dissolution by providing the first hole 16 and the second hole, thereby avoiding the phenomenon of the tracer adhering to the hole wall when the tracer is put into the borehole.

[0046] Furthermore, the outer shell of the solute diffusion chamber 8 includes a top cover 1 and a lower shell, and a third hole is set at the center of the top cover 1. The third hole can facilitate the access of the data line 14, and the solute concentration detection element 9 in the solute diffusion chamber 8 is communicatively connected with the data processing system III through the data line 14.

[0047] Optionally, a fixed lifting ring 6 may be further provided at the upper end of the top cover 1, and the fixed lifting ring 6 may be used to set a fixed pull rope to facilitate placement of the device at a predetermined position in the drill hole.

[0048] Optionally, the outer shell of the solute diffusion chamber 8 may be configured to be cylindrical.

[0049] In some embodiments, the gyro orientation device includes a gyro orientation meter 10 , a torque spring, a rod 5 , and a groundwater flow direction detection plate 11 , and the gyro orientation meter 10 is connected to the groundwater flow direction detection plate 11 via the torque spring and the rod 5 .

[0050] A specific implementation scheme also includes a gyro orientation chamber 4, which is used to set a gyro orientation instrument 10. The lower end of the gyro orientation instrument 10 extends out of the gyro orientation chamber 4 through a sealing cap, and the extended part of the gyro orientation instrument 10 is connected to a torque spring, a rod 5 and a groundwater flow direction detection plate 11.

[0051] In this embodiment, the gyro orientation chamber 4 is arranged at the lower end of the solute diffusion chamber 8 and is spaced apart from the solute diffusion chamber 8. The gyro orientation chamber 4 and the solute diffusion chamber 8 are arranged in the same housing and can be spaced apart by a partition.

[0052] Furthermore, a protective mesh 12 is connected to the lower end of the groundwater flow direction detection plate 11 to protect the groundwater flow direction detection plate 11 from moving in the borehole and colliding with objects in the borehole, thereby avoiding damage to the groundwater flow direction detection plate 11.

[0053] The direction of the groundwater flow direction detection plate 11 is fixed, and optionally, it also includes a directional hinge 5.1. One end of the rod 5, the directional hinge 5.1 and the groundwater flow direction detection plate 11 are connected in sequence, and the rotation direction of the groundwater flow direction detection plate 11 can be limited by the directional hinge 5.1.

[0054] It is achievable to further include a cross bar 5.2, a directional hinge 5.1 is arranged on the end 5.3 of the rod 5, the directional hinge 5.1 is connected to the groundwater flow direction detection plate 11 through the cross bar 5.2, the groundwater flow direction detection plate 11 is washed by the water flow to make a directional movement around the cross bar 5.2, and after the cross bar 5.2 and the end 5.3 are connected, the rotation relative to the end 5 of the rod 5 is realized through the built-in directional hinge 5.1.

[0055] like Figure 6 As shown, when in use, the directional hinge 5.1 hinges and limits the groundwater flow direction detection plate 11 to only rotate up and down in the vertical plane, and the rotation angle can be measured by the torque of the torque spring. The groundwater flow direction detection plate 11 can rotate around the hinge when subjected to force, and can automatically reset when the force disappears. The circle of the directional hinge 5.1 in the figure indicates the setting position area of ​​the directional hinge 5.1.

[0056] The water detection device I of this embodiment has a simple structure and can realize the flow direction and flow characteristics of groundwater from below the pull rope to different hole depths of the drilled hole.

[0057] In some embodiments, the water detection device I is connected to the data processing system III via a transmission device, and the structure of the transmission device can be as follows: Figure 2 shown.

[0058] Optionally, the transmission device II includes a data cable 14 and a data cable socket 13, the data cable socket 13 is arranged at both ends of the data cable 14, one end of the data cable 14 is sealed and connected to the spherical container 2 through the data cable socket 13, and the other end of the data cable 14 is connected to the data processing system III.

[0059] A specific structure, the data line socket 13 includes a pin plug 13.1, a fixing nut 13.2 and a water blocking sleeve 13.3, one end of the pin plug 13.1 is connected to the data line 14, the fixing nut 13.2 is arranged on the outside of the pin plug 13.1, the water blocking sleeve 13.3 is arranged at one end of the fixing nut 13.2, and the inner side of the fixing nut 13.2 can be provided with an internal thread.

[0060] When in use, after the fixing nut 13.2 is tightened, the water blocking sleeve 13.3 is pulled down along the lower end of the data line 14 until the fixing nut 13.2 is tightly covered. The material of the water blocking sleeve 13.3 can be waterproof rubber with good flexibility.

[0061] Furthermore, it also includes a handheld data processing device 15, and the data processing system III is arranged in the handheld data processing device 15.

[0062] Optionally, the handheld data processing device 15 includes a display area and an operation area.

[0063] In this embodiment, the input end of the data line 14 is connected to the spherical container 2, and the connection is reliable and sealed. The output end of the data line 14 is connected to the handheld data processing device 15, and the connection is tight, and the data transmission is reliable. The data line 14 uses a conventional data line to meet the conditions of stable data transmission, good durability, good corrosion resistance, etc. The data line 14 can be fixed with a nylon rope, and a small card is set on each meter of the nylon rope to facilitate the measurement of the lowering depth of the probe.

[0064] The water detection device I of this embodiment is connected to the data processing system III. When the borehole encounters groundwater during the drilling process, the water detection device I is placed in the borehole. After the water detection device I reaches the predetermined position in the borehole, the solute in the spherical container gradually changes under the scouring and carrying of the groundwater, and the groundwater flow direction detection plate rotates in the horizontal and vertical directions under the scouring of the groundwater. The data obtained by the water detection device I is transmitted to the data processing system through the transmission device for processing and analysis to obtain the flow direction and flow characteristics of the groundwater. The concentration curve obtained by the detection can be used to quantitatively analyze and characterize the development of connected fissures at different depths of the borehole; according to the change of the slope of the concentration curve, the permeability coefficient of the area near the borehole can be characterized, and the grouting curtain for the water gushing control of the mine excavation (mine) foundation pit can be dynamically designed based on the permeability coefficient; by studying the permeability of the slurry, the slurry diffusion can be dynamically controlled, the grouting efficiency can be improved, the grouting materials can be saved, and the economic benefits can be improved.

[0065] Example 2

[0066] The difference from Example 1 is that this example provides a real-time detection method for groundwater solute concentration and flow direction, comprising the following steps:

[0067] Step 1: lower the assembled water detection device I to a predetermined position in the borehole to obtain collected data;

[0068] Step 2: obtaining a solute concentration change curve according to the acquired solute concentration data;

[0069] Step 3: Calculate the slope change of the solute concentration change curve to obtain the permeability coefficient of the area near the borehole.

[0070] Step 4: Based on the first direction indicated by the gyroscopic orientation meter 10 and the second direction indicated by the groundwater flow direction detection board 11, the angle between the first direction and the second direction is obtained to determine the water flow direction.

[0071] Furthermore, the angle between the first direction and the second direction is used to characterize the relative relationship between the second direction and the first direction, thereby being able to determine the direction of the water flow.

[0072] This embodiment can characterize the permeability coefficient of the area near the borehole by real-time monitoring of the concentration of the solvent, according to the change in the slope of the concentration curve, and dynamically design the grouting curtain for the treatment of water inrush in the mine excavation (mine) foundation pit based on the permeability coefficient. The same water detection device I integrates the monitoring of tracer placement and water flow direction, thereby improving the test efficiency. Studying the permeability of the slurry can improve the dynamic control of the slurry diffusion, improve the grouting efficiency, save grouting materials, and improve the economic benefits.

[0073] Optionally, before data collection, the method of lowering the assembled water detection device I to a predetermined position in the borehole comprises the following steps:

[0074] Step 11: placing the target solute into the spherical container 2, then closing the spherical container 2, and slowly placing the spherical container 2 along the groove 3 on the inner wall of the solute diffusion chamber 8 until it reaches the bottom;

[0075] Step 12: Connect the spherical container 2 to the data cable 14, tighten the fixing nut 13.2, and then push the water blocking sleeve 13.3 to the outside of the fixing nut 13.2 to check whether the entire port is covered and installed firmly;

[0076] Step 13: Fasten the water detection device I formed in step 1 with a nylon rope;

[0077] Step 14: Connect the output end of the data line 14 to the handheld data processing device 15 and verify that the data transmission is stable;

[0078] Step 15: Tie the data cable 14 and the nylon rope securely with waterproof tape every two meters to ensure that they do not fall off after being immersed in water;

[0079] Step 16: Place the water detection device I into the groundwater of the borehole. After the water detection device I reaches the predetermined position, turn on the remote control switch of the first hole around the spherical container 2, set the closed first hole to an open state, and turn on the switch of the handheld data processing device 15 to start data collection.

[0080] Furthermore, the handheld data processing device 15 can be used for analysis and drawing, and a curve showing the change of solute concentration over time can be displayed on the display screen. At the same time, the direction indicated by the gyroscopic compass 10 and the direction indicated by the groundwater flow direction detection board 11 can be displayed, and the angle between the two can be displayed. Finally, a detection report can be issued to complete the detection.

[0081] The concentration calculation method in step 3 is: at a certain moment, a concentration detection element detects the concentration of the solution as , there are 6 concentration detection elements in the spherical container, and the average value of the 6 detection elements at a certain moment is taken as the detection value at a certain moment:

[0082]

[0083] In the formula ;

[0084] To determine the direction of water flow, first calculate the angle of the torque spring. The angle calculated by the torque spring is divided into two parts, one part is the horizontal angle of the groundwater flow direction detection plate 11, and the other part is the vertical angle of the groundwater flow direction detection plate 11. The combined direction indicated by the two calculation formulas is the second direction. A torque spring is provided at the fixed position of the direction detection plate to measure the vertical angle; a torque spring is also provided on the gyroscope and the rod connecting the direction detection plate to measure the horizontal angle.

[0085] The torsion spring angle is calculated as Figure 4 As shown, the calculation process is as follows:

[0086]

[0087]

[0088] In the formula, Expressed as the working torque of the groundwater dynamic water detection plate ( );

[0089] is the deformation angle under working torque ( 0 );

[0090] is the torque spring stiffness ( / ( 0 ));

[0091] is the rigidity modulus of the wire;

[0092] is the wire diameter (mm);

[0093] is the outer diameter (mm);

[0094] is the difference between the outer diameter and the wire diameter (mm);

[0095] is the number of torque spring coils;

[0096] is the force arm during operation (mm).

[0097] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

[0098] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A real-time detection device for groundwater solute concentration and flow direction, characterized in that: It includes a water detection device with communication connection and a data processing system; the water detection device includes a solute diffusion chamber, a gyro orientation device is arranged under the solute diffusion chamber, the solute diffusion chamber is used to diffuse and release tracer solute and detect the tracer solute concentration, and the gyro orientation device is used to detect the direction of water flow; The solute diffusion chamber comprises a shell, a spherical container arranged in the shell, and a solute concentration detection element arranged inside the spherical container, a first hole is arranged on the spherical container, a convex track is arranged on the outer side of the spherical container, a groove is arranged on the inner side of the shell, the convex track matches the groove, and the spherical container is placed in the shell through the groove; The gyro orientation device comprises a gyro orientation instrument, a torque spring, a rod and a groundwater flow direction detection plate, wherein the gyro orientation instrument is connected to the groundwater flow direction detection plate through the torque spring; To determine the direction of water flow, the rotation angle of the torque spring is calculated. The rotation angle calculated by the torque spring is divided into two parts, one part is the horizontal rotation angle of the direction detection plate, and the other part is the vertical rotation angle of the direction detection plate. A torque spring is provided at the fixed position of the direction detection plate to measure the vertical angle; a torque spring is also provided on the gyroscope and the rod connecting the direction detection plate to measure the horizontal angle.

2. The real-time detection device for groundwater solute concentration and flow direction according to claim 1, characterized in that: Also included is a handheld data processing device, wherein the data processing system is arranged in the handheld data processing device.

3. The real-time detection device for groundwater solute concentration and flow direction according to claim 1, characterized in that: The first hole is also provided with an electromagnetic valve for opening and closing the first hole; a remote control switch is also included, wherein the electromagnetic valve is electrically connected to the remote control switch, and the first hole is opened or closed by controlling the remote control switch.

4. The real-time detection device for groundwater solute concentration and flow direction according to claim 1, characterized in that: Solute concentration detection elements are arranged on the top, bottom and surrounding sides of the spherical container.

5. The real-time detection device for groundwater solute concentration and flow direction according to claim 1, characterized in that: The shell of the solute diffusion chamber includes a top cover and a lower shell. A third hole is arranged at the center of the top cover. The third hole is used to connect a data line, and the solute concentration detection element in the solute diffusion chamber is connected to the data processing system through the data line.

6. The real-time detection device for groundwater solute concentration and flow direction according to claim 1, characterized in that: A fixed lifting ring is arranged at the upper end of the top cover, and the fixed lifting ring is used for arranging a fixed pull rope.

7. The real-time detection device for groundwater solute concentration and flow direction according to claim 1, characterized in that: The gyro orientation device also includes a gyro orientation chamber, which is used to set a gyro orientation instrument. The lower end of the gyro orientation instrument extends out of the gyro orientation chamber through a sealing cap, and the extended part of the gyro orientation instrument is connected to a torque spring and a groundwater flow direction detection plate.

8. The real-time detection device for groundwater solute concentration and flow direction according to claim 1, characterized in that: The lower end of the groundwater flow direction detection plate is connected with a protective mesh.

9. The real-time detection device for groundwater solute concentration and flow direction according to claim 1, characterized in that: The gyro orientation device also includes an orientation hinge. One end of the rod, the orientation hinge and the groundwater flow direction detection plate are connected in sequence, and the rotation direction of the groundwater flow direction detection plate is limited by the orientation hinge.

10. The real-time detection device for groundwater solute concentration and flow direction according to claim 1, characterized in that: The gyro orientation chamber and the solute diffusion chamber are arranged in the same shell, the gyro orientation chamber of the gyro orientation device is arranged at the lower end of the solute diffusion chamber, and the gyro orientation chamber is separated from the solute diffusion chamber.

11. The real-time detection device for groundwater solute concentration and flow direction according to claim 1, characterized in that: The water detection device is connected to the data processing system through a transmission device, which includes a data cable and a data cable socket. The data cable sockets are arranged at both ends of the data cable. The data cable socket includes a pin plug, a fixing nut and a water-blocking sleeve. The fixing nut is arranged on the outside of the pin plug, and the water-blocking sleeve is arranged on the outside of the fixing nut.

12. A real-time detection method for groundwater solute concentration and flow direction, characterized in that: The steps include: Lower the assembled water detection device to a predetermined position in the borehole to obtain the collected data; The water detection device includes a solute diffusion chamber, and a gyro orientation device is arranged under the solute diffusion chamber; According to the acquired solute concentration data, a solute concentration variation curve is obtained; Calculate the slope change of the solute concentration change curve to obtain the permeability coefficient of the area near the borehole; According to the first direction indicated by the gyroscopic orientation instrument and the second direction indicated by the groundwater flow direction detection board, the angle between the first direction and the second direction is obtained, thereby determining the water flow direction; The solute diffusion chamber comprises a shell, a spherical container arranged in the shell, and a solute concentration detection element arranged inside the spherical container, a first hole is arranged on the spherical container, a convex track is arranged on the outer side of the spherical container, a groove is arranged on the inner side of the shell, the convex track matches the groove, and the spherical container is placed in the shell through the groove; The gyro orientation device comprises a gyro orientation instrument, a torque spring, a rod and a groundwater flow direction detection plate, wherein the gyro orientation instrument is connected to the groundwater flow direction detection plate through the torque spring; To determine the direction of water flow, the angle of rotation of the torque spring is calculated. The angle calculated by the torque spring is divided into two parts, one part is the horizontal angle of rotation of the groundwater flow direction detection plate, and the other part is the vertical angle of rotation of the groundwater flow direction detection plate. The combined direction indicated by the two calculation formulas is the second direction. A torque spring is provided at the fixed position of the direction detection plate to measure the vertical angle; a torque spring is also provided on the gyroscope and the rod connecting the direction detection plate to measure the horizontal angle.

13. The real-time detection method for groundwater solute concentration and flow direction according to claim 12, characterized in that: The method of lowering the assembled water detection device to a predetermined position in a borehole comprises the following steps: Placing the target solute into a spherical container, closing the spherical container, and placing the spherical container into the solute diffusion chamber along the groove on the inner wall of the solute diffusion chamber; Connect the spherical container to the data cable, tighten the fixing nut, and push the water-blocking sleeve to the outside of the fixing nut; Connect the output end of the data line to the handheld data processing device and verify that the data transmission is stable; Place the water detection device into the groundwater of the borehole. After the water detection device reaches the predetermined position, turn on the remote control switch of the first hole of the spherical container, set the closed first hole to the open state, and turn on the switch of the handheld data processing device to start data collection.

Images