Single-hole underground water seepage vector monitoring device and method based on image recognition

Abstract

The invention provides a single-hole underground water seepage vector monitoring device and method based on image recognition. The device comprises an auxiliary structure, a vector tracking mechanism, a position monitoring assembly, a device reset mechanism, a main control circuit board and a lighting mechanism. On the basis of the image recognition technology, underground water seepage is regarded as three-dimensional flow, the flow speed and the flow direction of underground water at the measuring point position can be measured at the same time through a single-hole lowering instrument, the measuring device can control self-resetting, repeated and continuous measurement is achieved, and compared with simulation of two-dimensional underground water seepage through a magnetic field, the measuring structure is more accurate. The technical scheme of the invention has the advantages of low power consumption, simple structure, small volume, reliable performance and convenience in operation.

Description

Technical Field

[0001] The present invention relates to the technical field of groundwater seepage monitoring, and in particular to a single-hole groundwater seepage vector monitoring device and method based on image recognition. Background Art

[0002] Landslide geological disasters are widely distributed, occur frequently, and cause serious harm. They are one of the most serious types of geological disasters that endanger the people in my country. The sliding zone soil is soaked in groundwater, and the fine particles of the soil are continuously carried away by the seepage, resulting in strength reduction, which affects the overall stability of the landslide. Therefore, in order to accurately evaluate the corresponding relationship between groundwater seepage activity and the landslide evolution and disaster process, especially the initiation mechanism, the real-time observation of the three-dimensional flow velocity and direction of groundwater seepage can identify the recharge and migration characteristics of the landslide groundwater, which is an urgent need for current research institutes.

[0003] At present, a variety of methods have been developed to measure the velocity and direction of groundwater flow in a single hole. By capturing the characteristic information of various tracers such as temperature field, electric field, chemical field, radioactive elements, etc. that migrate with groundwater seepage in the borehole, the tracer method of seepage velocity and direction can be indirectly converted. Among them, China University of Geosciences (Wuhan) has proposed a variety of technical solutions with good results. For example, the Chinese invention patent with publication number CN 108362908 A uses magnetic field feature recognition technology to measure the velocity and direction of a single hole by assuming that water moves completely horizontally. However, the migration of groundwater seepage underground is very complicated. The aforementioned method is limited to two-dimensional information sensing due to its backward design concept. Even if it goes a step further than the traditional method, it still cannot fully and accurately reflect the three-dimensional change state of the seepage field.

[0004] Therefore, it is advanced to obtain the three-dimensional flow velocity and direction monitoring of the seepage in the local geological body based on the existing geological survey boreholes, which meets the urgent needs of theory. Therefore, researching and designing a single-hole groundwater seepage direction three-dimensional sensing device and method with low power consumption, simple structure, small size, reliable performance and convenient operation is not only necessary for landslide survey activities, but also an important technology. Summary of the invention

[0005] The purpose of the present invention is to address the defects of the prior art and provide a single-hole groundwater seepage vector monitoring device and method based on image recognition. Based on image recognition technology, groundwater seepage is regarded as three-dimensional flow. By lowering the instrument through a single hole, the flow velocity and flow direction of groundwater at the measuring point can be measured simultaneously. The measuring device can control its own reset to achieve repeated and continuous measurement. Compared with using magnetic field to simulate two-dimensional groundwater seepage, the measurement structure is more accurate.

[0006] According to a first aspect of the present invention, a single-hole groundwater seepage vector monitoring device based on image recognition is provided, comprising an auxiliary structure, a vector tracking mechanism, a position monitoring component, a device reset mechanism, a main control circuit board and a lighting mechanism, wherein the main control circuit board is connected to the device reset mechanism, the position monitoring component and the lighting mechanism, and the device reset mechanism is connected to the vector tracking mechanism; the auxiliary structure plays the role of structural support, structural reinforcement and safety protection, and the auxiliary structure has an upper end cover, an upper end shell, a water-passing bracket, a lower end shell and a lower end cover, wherein the upper end shell and the lower end shell are both cylindrical, wherein the upper end cover and the upper end cover shell are connected by threads, and the lower end shell and the lower end cover are also connected by threads, and the lower end shell and the upper end shell are connected by a water-passing bracket, and there are three water-passing brackets, which are evenly distributed between the outer surface of the upper end cover and the lower end shell, and a total of three water-passing windows are formed; the vector tracking mechanism is located in the water-passing bracket, and the vector tracking mechanism is a force-transmitting ball, wherein the force-transmitting ball is composed of foam, and the density of the force-transmitting ball is close to the density of water, and the force-transmitting ball can remain suspended in water; the position monitoring mechanism is used to monitor the position change of the vector tracking mechanism.

[0007] Preferably, the position monitoring mechanism includes an upper rotating frame, an upper waterproof camera, a lower rotating frame and a lower waterproof camera, the upper waterproof camera is fixed on the upper rotating frame, and the lower waterproof camera is fixed on the lower waterproof frame. When the upper rotating frame and the lower rotating frame rotate, the upper waterproof camera and the lower waterproof camera rotate accordingly, and the lower rotating frame and the lower rotating motor, the upper rotating frame and the upper rotating motor are all connected by belts.

[0008] Preferably, the position monitoring mechanism also includes an upper transparent partition and a lower transparent partition. The upper waterproof camera observes and records the vector tracking mechanism through the upper transparent partition, and the lower waterproof camera takes real-time photos through the lower transparent partition to record the vector tracking mechanism. The upper waterproof camera and the lower waterproof camera process the information obtained by the camera to obtain accurate position changes of the vector tracking mechanism.

[0009] Preferably, the resetting mechanism of the device includes a wire-reeling machine, a wire-reeling wire and a wire hook, the wire-reeling machine is installed in a cavity formed by the lower end shell and the lower end cover, the wire-reeling machine is connected to the wire-reeling wire, and the other end of the wire-reeling wire is connected to a vector tracking mechanism, when the output of the wire-reeling machine rotates, the wire-reeling wire is reeled in or released, and the vector tracking mechanism follows the reeling in or releasing.

[0010] Preferably, the lighting mechanism provides a lighting system for the device, including a cable and a lighting lamp, and the connection between the cable and the upper end housing is sealed using a waterproof sealant.

[0011] A second aspect of the present invention provides a single-hole groundwater seepage vector monitoring method, using any of the above-mentioned single-hole groundwater seepage vector monitoring devices based on image recognition, specifically comprising the following steps: S1 After determining the survey location, drill a detection hole. When measuring, first lower the monitoring device into the detection hole by pulling it with a cable rope, adjust the depth of the monitoring device, ensure that groundwater flows through the detection hole at the measuring point, wait for the monitoring device to stabilize, and then determine its initial direction; S2 energizes the monitoring device through the cable rope and starts the measurement. The entire measurement process is automatically controlled by the main control circuit board. The groundwater seepage enters the detection hole through the permeable stratum and flows slowly. At this time, the main control circuit board controls the retractable wire machine to rotate, the retractable wire is loosened, and the force transfer ball moves under the action of the seepage. The length of the retractable wire should control the movement of the force transfer ball in the water-passing bracket; The upper waterproof camera and the lower waterproof camera of S3 jointly capture the moving direction and distance of the force-transmitting ball in the water-passing bracket. Based on the three-dimensional modeling of the image, the initial and final spatial positions of the force-transmitting ball in a monitoring cycle are determined, so as to accurately track the three-dimensional spatial position change of the force-transmitting ball by vector, thereby obtaining the three-dimensional flow velocity and direction of groundwater seepage, and transmitting it to the main control circuit board; S4 After a monitoring cycle is completed, the main control circuit board controls the pay-off and take-up machine to rotate in reverse, the pay-off and take-up wires are tightened, and the force transmission ball is pulled back to the initial position for the next measurement cycle. At the same time, the depth position of the monitoring device can be changed during the next measurement to continue measuring the next measuring point.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention fully considers the real monitoring environment of groundwater flow velocity and direction in landslide survey. The measuring device can realize single-hole monitoring of groundwater seepage velocity and direction, regard groundwater seepage as three-dimensional flow, and use image capture technology to judge the displacement change of the monitoring device through image acquisition and recognition, and then convert it into groundwater seepage, making the measurement more accurate and scientific.

[0013] 2. The present invention uses a suspended force-transmitting ball and a waterproof camera to perform real-time three-dimensional modeling and imaging of the water flow, thereby realizing real-time follow-up tracking of the three-dimensional sensing of the groundwater seepage direction, realizing non-contact measurement, and consuming less resistance. The monitoring process will not affect the tracking of the flow velocity and direction, and the tracking accuracy of the water flow is high.

[0014] 3. The measuring device of the present invention has the advantages of simple structure, small size and low power consumption, and can detect the velocity and direction of underground seepage at any time. Compared with the traditional measurement method, it will not pollute the environment, nor harm the health of operators, and is low in cost and easy to implement. It can measure the velocity and direction of seepage at different depths in different boreholes, and the operation process is also simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a cross-sectional structural diagram of the present invention.

[0017] Figure 3 It is a schematic diagram of the monitoring principle of the present invention.

[0018] Figure 4 It is a flow chart of the present invention.

[0019] In the figure: 1. Auxiliary structure; 11. Upper end cover; 12. Upper end shell; 13. Water-passing bracket; 14. Lower end shell; 15. Lower end cover; 16. Water-passing window; 2. Vector tracking mechanism; 3. Position monitoring component; 31. Upper rotating frame; 32. Upper waterproof camera; 33. Lower waterproof camera; 34. Lower rotating frame; 35. Upper rotating motor; 36. Upper transparent partition; 37. Lower transparent partition; 38. Lower rotating motor; 4. Device reset mechanism; 41. Wire-reeling machine; 42. Wire-reeling; 43. Wire-harnessing hook; 5. Main control circuit board; 6. Lighting mechanism; 61. Cable; 62. Lighting lamp. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for exemplary descriptions and cannot be understood as limitations on this patent; in order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted; the positional relationship described in the drawings is only used for exemplary descriptions and cannot be understood as limitations on this patent.

[0021] As an embodiment of the present invention, see the attached Figure 1 and Figure 2The present embodiment provides a single-hole groundwater seepage vector monitoring device based on image recognition, including an auxiliary structure 1, a vector tracking mechanism 2, a position monitoring component 3, a device reset mechanism 4, a main control circuit board 5 and a lighting mechanism 6, wherein the main control circuit board 5 is connected to the device reset mechanism 4, the position monitoring component 3 and the lighting mechanism 6, and the device reset mechanism 4 is connected to the vector tracking mechanism 2; the auxiliary structure 1 plays the role of structural support, structural reinforcement and safety protection, and the auxiliary structure 1 has an upper end cover 11, an upper end shell 12, a water-passing bracket 13, a lower end shell 14 and a lower end cover 15, and the upper end shell 12 The upper end cover 11 and the lower end shell 15 are both cylindrical, wherein the upper end cover 11 and the upper end cover shell 12 are connected by threads, the lower end shell 14 and the lower end cover 15 are also connected by threads, and the lower end shell 14 and the upper end shell 12 are connected by water-passing brackets 13. There are three water-passing brackets 13, which are evenly distributed between the upper end cover 12 and the lower end shell 14, forming a total of three water-passing windows 16; the vector tracking mechanism 2 is located in the water-passing brackets 13, the vector tracking mechanism 2 is a force-transmitting ball, and the force-transmitting ball is composed of foam. The density of the force-transmitting ball is close to the density of water, and the force-transmitting ball can remain suspended in water; the position monitoring mechanism 3 is used to monitor the position change of the vector tracking mechanism 2.

[0022] In the above embodiment, in order to avoid the influence and interference on the groundwater seepage, the water-passing support is small enough to ignore the influence on the water flow at the observation point while being able to support the upper and lower parts, and the water-passing window 16 is as large as possible.

[0023] In some preferred embodiments, Figure 2 As shown, the position monitoring mechanism 3 includes an upper rotating frame 31, an upper waterproof camera 32, a lower rotating frame 34 and a lower waterproof camera 33. The upper waterproof camera 32 is fixed on the upper rotating frame 31, and the lower waterproof camera 33 is fixed on the lower waterproof frame 34. When the upper rotating frame 31 and the lower rotating frame 34 rotate, the upper waterproof camera 32 and the lower waterproof camera 33 rotate accordingly. The lower rotating frame 34 and the lower rotating motor 38, the upper rotating frame 31 and the upper rotating motor 35 are all connected by belts.

[0024] In some preferred embodiments, Figure 2 As shown, the position monitoring mechanism 3 also includes an upper transparent partition 36 and a lower transparent partition 37. The upper waterproof camera 32 observes and records the vector tracking mechanism 2 through the upper transparent partition 36, and the lower waterproof camera 33 takes real-time photos through the lower transparent partition 37 to record the vector tracking mechanism 2. The upper waterproof camera 32 and the lower waterproof camera 33 process the information obtained by the camera to obtain the accurate position change of the vector tracking mechanism 2.

[0025] In other preferred embodiments, Figure 2As shown, the device reset mechanism 4 includes a wire-reeling machine 41, a wire-reeling wire 42 and a wire-binding hook 43. The wire-reeling machine 41 is installed in a cavity formed by the lower end shell 14 and the lower end cover 15. The wire-reeling machine 41 is connected to the wire-reeling wire 42, and the other end of the wire-reeling wire 42 is connected to the vector tracking mechanism 2. When the wire-reeling machine 41 outputs rotation, the wire-reeling wire 42 is reeled in or released, and the vector tracking mechanism 2 follows the reeling in or releasing.

[0026] In the present invention, the lighting mechanism 6 provides a lighting system for the device, including a cable 61 and a lighting lamp 62. The connection between the cable 61 and the upper housing 12 is sealed with a waterproof sealant.

[0027] In the embodiment of the present invention, the main control circuit board 5 is the control center of the monitoring device, which includes position monitoring, position control, data storage and communication functions. The specific functions are to control the sampling of the waterproof camera, calculate the position and moving speed of the force transmission ball, and control the retractable wire machine to retract and release the pull wire connected to the force transmission ball. The main control circuit board 5 is located in the cavity formed by the upper end cover 11 and the upper end cover shell 12. The main control circuit board 5 is a single-chip microcomputer system.

[0028] As another preferred embodiment of the present invention, this embodiment provides a single-hole groundwater seepage vector monitoring method, using any one of the above embodiments of a single-hole groundwater seepage vector monitoring device based on image recognition, see the attached Figure 3 and attached Figure 4 , specifically including the following steps: S1 After determining the survey location, drill the detection hole 8. When measuring, first pull the monitoring device into the detection hole 8 by the cable rope 61, adjust the depth of the monitoring device, ensure that groundwater flows through the detection hole 8 at the measuring point, wait for the monitoring device to stabilize, and then determine its initial direction; S2 powers on the monitoring device through the cable 61 to start the measurement. The entire measurement process is automatically controlled by the main control circuit board 5. The groundwater seepage flows through the permeable stratum 7 into the detection hole 8 and flows slowly. At this time, the main control circuit board 5 controls the retractable wire machine 41 to rotate, the retractable wire 42 is relaxed, and the force transfer ball moves under the action of the seepage. The length of the retractable wire 42 should control the movement of the force transfer ball in the water-passing bracket 13. S3 The upper waterproof camera 32 and the lower waterproof camera 33 jointly capture the moving direction and distance of the force-transmitting ball in the water-passing bracket 13, and determine the initial spatial position and final spatial position of the force-transmitting ball in a monitoring cycle based on the three-dimensional modeling of the image, so as to accurately track the three-dimensional spatial position change of the force-transmitting ball by vector, thereby obtaining the three-dimensional flow velocity and direction of the seepage of groundwater, and transmitting it to the main control circuit board 5; S4 After a monitoring cycle is completed, the main control circuit board 5 controls the reel-and-reel machine 41 to rotate in the reverse direction, the reel-and-reel wire 42 is tightened, and the force transmission ball is pulled back to the initial position for the next measurement cycle. At the same time, the depth position of the monitoring device can be changed during the next measurement to continue measuring the next measuring point.

[0029] The present invention fully considers the real monitoring environment of groundwater flow velocity and direction in landslide survey, and the measuring device can realize single-hole deployment monitoring of groundwater seepage velocity and direction. The water flow is tracked and followed by a suspended force-transmitting ball and a waterproof camera position sensor to realize non-contact measurement, with less resistance consumption. The monitoring process will not affect the tracking of the flow velocity and direction, and the tracking accuracy of the water flow is high. The measuring device has the advantages of simple structure, small size and low power consumption, and can detect the flow velocity and direction of underground seepage at any time. Compared with traditional measurement methods, it will not pollute the environment, nor will it harm the health of operators, and it is low-cost and easy to implement. It can measure the flow velocity and direction of seepage at different depths in different boreholes, and the operation process is also simpler.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A single-hole groundwater seepage vector monitoring device based on image recognition, characterized in that: The invention comprises an auxiliary structure (1), a vector tracking mechanism (2), a position monitoring component (3), a device reset mechanism (4), a main control circuit board (5) and a lighting mechanism (6), wherein the main control circuit board (5) is connected to the device reset mechanism (4), the position monitoring component (3) and the lighting mechanism (6), and the device reset mechanism (4) is connected to the vector tracking mechanism (2); the auxiliary structure (1) plays the role of structural support, structural reinforcement and safety protection, and the auxiliary structure (1) has an upper end cover (11), an upper end shell (12), a water passing bracket (13), a lower end shell (14) and a lower end cover (15), and the upper end shell (12) and the lower end shell (15) are both The invention is cylindrical, wherein the upper end cover (11) and the upper end cover shell (12) are connected by threads, the lower end shell (14) and the lower end cover (15) are also connected by threads, and the lower end shell (14) and the upper end shell (12) are connected by water-passing brackets (13). There are three water-passing brackets (13) in total, which are evenly distributed between the upper end cover (12) and the lower end shell (14), and a total of three water-passing windows (16) are formed; the vector tracking mechanism (2) is located in the water-passing brackets (13), and the vector tracking mechanism (2) is a force-transmitting ball, which is composed of foam, and the density of the force-transmitting ball is close to the density of water, and the force-transmitting ball can remain suspended in water; the position monitoring mechanism (3) is used to monitor the position change of the vector tracking mechanism (2).

2. A single-hole groundwater seepage vector monitoring device based on image recognition according to claim 1, characterized in that: The position monitoring mechanism (3) comprises an upper rotating frame (31), an upper waterproof camera (32), a lower rotating frame (34) and a lower waterproof camera (33); the upper waterproof camera (32) is fixed on the upper rotating frame (31), and the lower waterproof camera (33) is fixed on the lower waterproof frame (34); when the upper rotating frame (31) and the lower rotating frame (34) rotate, the upper waterproof camera (32) and the lower waterproof camera (33) rotate accordingly; the lower rotating frame (34) and the lower rotating motor (38), the upper rotating frame (31) and the upper rotating motor (35) are all connected via belts.

3. A single-hole groundwater seepage vector monitoring device based on image recognition according to claim 2, characterized in that: The position monitoring mechanism (3) further comprises an upper transparent partition (36) and a lower transparent partition (37); the upper waterproof camera (32) observes and records the vector tracking mechanism (2) through the upper transparent partition (36); the lower waterproof camera (33) photographs in real time through the lower transparent partition (37) and records the vector tracking mechanism (2); the upper waterproof camera (32) and the lower waterproof camera (33) perform matching processing on the information obtained by the photography to obtain accurate position changes of the vector tracking mechanism (2).

4. A single-hole groundwater seepage vector monitoring device based on image recognition according to claim 1, characterized in that: The device reset mechanism (4) comprises a wire-reeling machine (41), a wire-reeling wire (42) and a wire-binding hook (43). The wire-reeling machine (41) is installed in a cavity formed by a lower end housing (14) and a lower end cover (15). The wire-reeling machine (41) is connected to the wire-reeling wire (42). The other end of the wire-reeling wire (42) is connected to a vector tracking mechanism (2). When the wire-reeling machine (41) outputs rotation, the wire-reeling wire (42) is reeled in or released, and the vector tracking mechanism (2) is reeled in or released accordingly.

5. A single-hole groundwater seepage vector monitoring device based on image recognition according to claim 1, characterized in that: The lighting mechanism (6) provides a lighting system for the device, and comprises a cable (61) and a lighting lamp (62). The connection between the cable (61) and the upper housing (12) is sealed using a waterproof sealant.

6. A single-hole groundwater seepage vector monitoring method, characterized in that: The single-hole groundwater seepage vector monitoring device based on image recognition according to any one of claims 1 to 5 specifically comprises the following steps: S1 After determining the survey location, drill a detection hole (8). When measuring, first lower the monitoring device into the detection hole (8) by pulling it with a cable rope (61), adjust the depth of the monitoring device, ensure that groundwater flows through the detection hole (8) at the measuring point, wait for the monitoring device to stabilize, and then determine its initial direction; S2 powers on the monitoring device through the cable (61) to start the measurement. The entire measurement process is automatically controlled by the main control circuit board (5). The groundwater seepage flows through the permeable stratum (7) into the detection hole (8) and flows slowly. At this time, the main control circuit board (5) controls the retractable wire machine (41) to rotate, the retractable wire (42) is relaxed, and the force transmission ball moves under the action of the seepage. The length of the retractable wire (42) should control the movement of the force transmission ball in the water-passing bracket (13); The upper waterproof camera (32) and the lower waterproof camera (33) of S3 jointly capture the moving direction and distance of the force-transmitting ball in the water-passing bracket (13), and determine the initial spatial position and the final spatial position of the force-transmitting ball in a monitoring cycle based on the three-dimensional modeling of the image, so as to accurately vector-track the three-dimensional spatial position change of the force-transmitting ball to obtain the three-dimensional flow velocity and direction of the groundwater seepage, and transmit it to the main control circuit board (5); S4 After a monitoring cycle is completed, the main control circuit board (5) controls the reel-and-reel machine (41) to rotate in the reverse direction, the reel-and-reel wire (42) is tightened, and the force transmission ball is pulled back to the initial position to carry out the next measurement cycle. At the same time, the depth position of the monitoring device can be changed during the next measurement to continue measuring the next measurement point.

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