A movable floating plate monitoring device and method for large-diameter multi-flow-state drainage pipes

Abstract

The present invention discloses a movable floating plate monitoring device and method for a large-diameter multi-flow-state drainage pipeline, including a monitoring floating plate platform, the monitoring floating plate platform including a floating plate and a fixed frame, the fixed frames are symmetrically provided on both sides of the floating plate, the pulley devices are symmetrically provided on both sides of the monitoring floating plate platform, the pulley devices are slidably connected to the floating rail, the floating rail includes a wire rope and a float, the two ends of the wire rope are respectively connected to the fixed anchors of two inspection well openings, the wire rope is provided with multiple floats, the floats are fixed to the lower end of the wire rope, the monitoring floating plate platform is provided with a brake fixing system and a driving device, the brake fixing system is installed on one side of the driving device, the brake fixing system includes a brake mechanism, a fixed pulley and a fixed rope, which can be stably fixed to any depth section of the entire pipe section, and the monitoring values of different pipeline depth sections can be stably and accurately obtained without going down into the well for installation and operation.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage pipe network monitoring, and in particular to a movable floating plate monitoring device and method for a large-diameter multi-flow-state drainage pipe. Background Art

[0002] Downstream areas of urban drainage pipe networks, especially those near lift pumping stations or sewage treatment plant inlet fronts, drainage or sewage interception mains, and river crossing pipe sections, often have large pipe diameters (greater than 2 meters), deep burial depths (about 10 meters or deeper), multiple flow regimes (affected by downstream pump gates, intermittent full / partial pipe flow, and static and reverse flow during periods when downstream pump gates are closed), long spacing (the distance between two inspection wells is greater than 100 meters), and eccentric inspection wells (the horizontal distance between the inspection well opening and the pipe section water inlet is several meters apart). In this case, conventional pipe network monitoring installation, whether it is L-shaped support rods or frogman installation, brings great difficulties. Even if the installation is successful, the subsequent regular operation and maintenance is even more difficult, which has become a pain point and difficulty in the industry. Summary of the Invention

[0003] The purpose of the present invention is to provide a movable floating plate monitoring device and method for large-diameter multi-flow state drainage pipelines to solve the problems raised in the above-mentioned background technology. Without the need for installation and maintenance in the well, it is possible to stably obtain monitoring values of different pipeline depth sections.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a movable floating plate monitoring device for a large-diameter multi-flow state drainage pipeline, comprising a monitoring floating plate platform, wherein the lower end of the monitoring floating plate platform is respectively provided with an underwater camera, a water quality analyzer, a bottom water level gauge and a flow rate meter from front to back, the monitoring floating plate platform comprises a floating plate and a fixed frame, the fixed frames are symmetrically provided on both sides of the floating plate, the pulley devices are symmetrically provided on both sides of the monitoring floating plate platform, the pulley devices are slidably connected to the floating rail, the floating rail comprises a left steel wire rope, a right steel wire rope and a plurality of floats, the left steel wire rope and the right steel wire rope have two ends. They are respectively connected to the fixed anchors of the two inspection wellheads, and the left steel wire rope and the right steel wire rope are respectively provided with multiple floats, and the floats are respectively fixed to the lower ends of the left steel wire rope and the right steel wire rope. A brake fixing system and a drive device are provided on the monitoring float platform, and the brake fixing system is installed on one side of the drive device. The brake fixing system includes a brake mechanism, a fixed pulley and a fixed rope. The brake mechanism is respectively installed on the floating rails on both sides of the monitoring float platform, and the fixed pulleys are symmetrically arranged on the floating plates on both sides of the monitoring float platform. The rear end of the fixed rope is provided with a drive device.

[0005] Preferably, the fixing frame includes a front fixing frame and a rear fixing frame, and the front fixing frame and the rear fixing frame are symmetrically arranged at the front and rear ends of the monitoring floating plate platform respectively, and the front fixing frame and the rear fixing frame are respectively installed with pulley devices.

[0006] Preferably, the pulley device includes a front pulley group and a rear pulley group, the front pulley group is installed on the front fixed frame, the rear pulley group is installed on the rear fixed frame, the rear pulley group and the front pulley group are respectively arranged on the left steel rope and the right steel rope, the front pulley group is horizontally clamped on the left steel rope and the right steel rope through the front symmetrical pulley, the rear pulley group is horizontally clamped on the left steel rope and the right steel rope through the rear symmetrical pulley, and the front symmetrical pulley and the rear symmetrical pulley are respectively arranged on the front fixed frame and the rear fixed frame.

[0007] Preferably, the brake mechanism includes a brake disc, a rubber block is provided on the inner side of the brake disc, and the rubber block can be connected to the left steel wire rope and the right steel wire rope. A clamp is provided on the outer side of the brake disc, and one end of the clamp is connected to the fixed rope.

[0008] Preferably, the brake disc is in an arc shape, and the rubber block is in an arc shape and closely adheres to the inner side of the brake disc.

[0009] Preferably, the driving device includes a water sailboard, a rotating rod is provided at the upper end of the water sailboard, the water sailboard is arranged at the lower end of the monitoring float platform, the rotating rod is installed at the rear end of the brake fixing system, a rotating shaft is fixed on the rotating rod, a rotating wheel is installed on the rotating shaft, and a start-stop rope is connected to the rotating wheel.

[0010] Preferably, the water sailboard can rotate at 90° or 0° to the direction of the water flow during the pulling of the start-stop rope.

[0011] Preferably, a rear pull rope is provided at the middle position of the front end of the monitoring floating plate platform, and the rear pull rope extends to the wellhead of the inspection wellhead.

[0012] Preferably, a plurality of the floats are equidistantly spaced on the left steel rope and the right steel rope, and the floats are arranged at the lower ends of the front pulley group and the rear pulley group.

[0013] Preferably, a method for using a movable floating plate monitoring device for a large-diameter multi-flow-state drainage pipe comprises the following steps:

[0014] S1: The device is equipped with two left and right steel wire ropes that pass through the entire drainage pipe. Floats are placed on the wire ropes, allowing them to float on the water surface, forming a floating track. The monitoring float platform is installed on the track. The entire wire rope floating track system can pass through the entire drainage pipe with the help of the wire ropes. During the monitoring process, the monitoring float platform can move along the floating track to any depth in the pipe according to monitoring requirements. The substances and conditions in the water are monitored using underwater cameras, water quality analyzers, bottom water level gauges, and flow rate meters.

[0015] S2: When the monitoring floating board platform needs to be fixed, the upper end of the water sailboard of the driving device is connected to the rotating shaft, and the water sailboard can be rotated from 90 degrees to 0 degrees. The direction of the water sailboard is parallel to the water flow. At this time, the water sailboard is basically not affected by the water flow. Through a set of brake fixing system configured on the monitoring floating board platform, the clamp is pulled by the fixed rope, and the clamp drives the rubber block in the brake disc. By configuring a set of brake mechanisms on both sides of the floating board platform, when the fixed rope is tightened, the fixed rope passes through the fixed pulley, driving the clamp inward, driving the rubber block of the brake disc to hold the wire rope floating rail tightly, so that the monitoring floating board platform can be stably fixed on the wire rope floating rail;

[0016] S3: When the monitoring float platform moves, the water sailboard rotates 90 degrees and is perpendicular to the direction of the water flow, and the fixed rope is loosened at the same time. At this time, the monitoring float platform can move forward or backward with the direction of the water flow under the action of the water sailboard; through the movement of the water sailboard, the monitoring float platform can be moved and fixed on the drainage pipe sections at different well depths, and the monitoring values of the sections with different pipe depths can be obtained; in the large-diameter, large-depth, full-pipe flow drainage pipeline with a distance of 100-120 meters between the upstream and downstream inspection wells, water quantity and quality monitoring instruments can be deployed at a position 50-60 meters in the middle to obtain accurate and representative monitoring data.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The entire wire rope floating rail system can pass through the entire drainage pipe with the help of wire rope, be lowered from the upstream inspection well, and pulled out from the downstream inspection well. At the same time, it is firmly fixed on the fixed anchors of the upstream and downstream inspection wells. With the help of the tension at the upstream and downstream ends and the buoyancy of the water surface, a guide rail is formed that floats stably on the water surface and is not affected by static or countercurrent. If the pipe is full of flow, the guide rail can be stably fixed on the top of the pipe.

[0019] 2. A monitoring floating plate platform is configured for use with a wire rope floating rail that passes through a drainage pipe. The platform is made of engineering plastic, which is strong and stable and has a density lower than that of water. It can be stably fixed on the water surface with the floating rail.

[0020] 3. A set of brake discs are configured on each side of the floating platform. When the brake elastic fixing rope is tightened, the fixing rope passes through the fixed pulley, drives the clamp inward, and drives the brake rubber block to hold the wire rope floating rail tightly, so that the monitoring floating platform can be stably fixed on the wire rope floating rail.

[0021] 4. The monitoring floating platform can be moved and fixed on drainage pipe sections of different depths, and can obtain monitoring values of sections of different pipe depths; for large-diameter, deep-buried, full-flow drainage pipes with upstream and downstream inspection wells 100-120 meters apart, water quantity and quality monitoring instruments can be deployed at a position 50-60 meters in the middle to obtain accurate and representative monitoring data.

[0022] 5. The float downstream of the monitoring float platform can be directly fixed on the wire rope. The front end of the float upstream of the float platform is connected to the float platform through the float forward rope. The float rear pull rope is set at the back. The floats are connected with ropes and can slide on the float rail. In this way, the floats can move forward and backward with the monitoring float platform, and are arranged at a certain interval to ensure that the float rail can float stably on the water surface.

[0023] 6. The monitoring platform can be stably fixed at any depth section of the entire drainage pipe; the monitoring floating platform can be equipped with flow rate meters, water level meters, water quality analyzers, and underwater cameras as needed. Without the need for installation and maintenance in the well, the monitoring values of different pipeline depth sections can be obtained stably and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structural principle of the movable floating plate monitoring device of the present invention.

[0025] Figure 2 This is a side view of the structure of the movable floating plate monitoring device of the present invention.

[0026] Figure 3 This is a schematic diagram of the structural principle of the monitoring floating plate platform of the present invention.

[0027] Figure 4 This is a schematic diagram of the structural principle of the brake fixing system of the present invention.

[0028] Figure numerals: 1. Monitoring float platform, 2. Underwater camera, 3. Water quality analyzer, 4. Bottom water level meter, 5. Flow rate meter, 6. Float, 7. Fixed frame, 8. Pulley device, 9. Floating rail, 10. Left wire rope, 11. Right wire rope, 12. Float, 13. Fixed anchor, 14. Braking fixing system, 15. Driving device, 16. Braking mechanism, 17. Fixed pulley, 18. Fixed rope, 19. Front fixed frame, 20. Rear fixed frame, 21. Front pulley group, 22. Rear pulley group, 23. Front symmetrical pulley, 24. Rear symmetrical pulley, 25. Brake disc, 26. Rubber block, 27. Hoop, 28. Water sailboard, 29. Turntable, 30. Rotating shaft, 31. Rotating wheel, 32. Start and stop rope, 33. Rear pull rope. DETAILED DESCRIPTION

[0029] The following content describes the specific embodiments of the present invention in detail with reference to the accompanying drawings.

[0030] Example 1:

[0031] A movable floating plate monitoring device for a large-diameter multi-flow state drainage pipeline includes a monitoring floating plate platform 1. The lower end of the monitoring floating plate platform 1 is respectively provided with an underwater camera 2, a water quality analyzer 3, a bottom water level gauge 4 and a flow rate meter 5 from front to back. The monitoring floating plate platform 1 includes a floating plate 6 and a fixed frame 7. The fixed frames 7 are symmetrically provided on both sides of the floating plate 1. The pulley devices 8 are symmetrically provided on both sides of the monitoring floating plate platform 1. The pulley devices 8 are slidably connected to the floating rail 9. The floating rail 9 includes a left wire rope 10, a right wire rope 11 and a plurality of floats 12. The ends of the left wire rope 10 and the right wire rope 11 are respectively connected to the fixed anchors 13 of the two inspection wellheads. The left steel wire rope 10 and the right steel wire rope 11 are respectively provided with a plurality of floats 12, and the floats 12 are respectively fixed to the lower ends of the left steel wire rope 10 and the right steel wire rope 11. A brake fixing system 14 and a driving device 15 are provided on the monitoring floating plate platform 1. The brake fixing system 14 is installed on one side of the driving device. The brake fixing system 14 includes a brake mechanism 16, a fixed pulley 17 and a fixed rope 18. The brake mechanism 16 is respectively installed on the floating rails 9 on both sides of the monitoring floating plate platform 1. The fixed pulley 17 is symmetrically arranged on both sides of the floating plate 6 of the monitoring floating plate platform 1. The rear end of the brake fixing system 14 is provided with a driving device 15;

[0032] By passing the steel wire rope floating rail 9 and the monitoring float platform 1 through the drainage pipe, the entire system can float stably on the water surface. When the pipe is full, it can be stably fixed on the top of the pipe and will not be affected by the water flow state. At the same time, by loosening and tightening the brake fixing rope 18 of the monitoring float platform 1, the monitoring platform 1 can be stably fixed to any depth section of the entire drainage pipe; the monitoring float platform 1 can be equipped with a flow rate flow meter 5, a water level meter 4, a water quality analyzer 3, and an underwater camera 2 as needed, and can stably and accurately obtain monitoring values of different pipeline depth sections without going down to the well for installation and operation.

[0033] The fixing frame 7 includes a front fixing frame 19 and a rear fixing frame 20, which are symmetrically arranged at the front and rear ends of the monitoring floating platform 1, and the pulley devices 8 are respectively installed on the front fixing frame 19 and the rear fixing frame 20.

[0034] The pulley device 8 includes a front pulley group 21 and a rear pulley group 22, the front pulley group 21 is mounted on the front fixed frame 19, the rear pulley group 22 is mounted on the rear fixed frame 20, the rear pulley group 22 and the front pulley group 21 are respectively arranged on the left steel rope 10 and the right steel rope 11, the front pulley group 21 is horizontally clamped on the left steel rope 10 and the right steel rope 11 respectively through the front symmetrical pulley 23, the rear pulley group 22 is horizontally clamped on the left steel rope 10 and the right steel rope 11 respectively through the rear symmetrical pulley 24, the front symmetrical pulley 23 and the rear symmetrical pulley 24 are respectively arranged on the front fixed frame and the rear fixed frame;

[0035] Floats 12 are arranged at intervals on the left and right steel wire rope float rails to ensure that the left and right steel wire rope float rails 9 float stably on the water surface; the float 12 downstream of the monitoring float platform 1 can be directly fixed on the left and right steel wire ropes, and the front end of the float upstream of the float platform is connected to the float platform through the float forward rope, and a float rear pull rope is set at the back. The floats are connected with ropes and can slide on the float rails, so that the floats 12 can move forward and backward with the monitoring float platform, and are arranged at a certain interval to ensure that the float rails can float stably on the water surface.

[0036] The brake mechanism 16 includes a brake disc 25 , a rubber block 26 is provided on the inner side of the brake disc 25 , and the rubber block 26 can be connected to the left steel wire rope 10 and the right steel wire rope 11 , and a clamp 27 is provided on the outer side of the brake disc 25 , and one end of the clamp 27 is connected to the fixed rope 18 .

[0037] The brake disc 25 is in an arc shape, and the rubber block 26 is in an arc shape and closely adheres to the inner side of the brake disc.

[0038] The driving device 15 includes a water sailboard 28, a rotating rod 29 is provided at the upper end of the water sailboard 28, the water sailboard 28 is arranged at the lower end of the monitoring floating platform 1, and the rotating rod 29 is installed at the rear end of the brake fixing system 14. A rotating shaft 30 is fixed on the rotating rod 29, and a rotating wheel 31 is installed on the rotating shaft 30, and a start-stop rope 32 is connected to the rotating wheel.

[0039] The water sailboard 28 can rotate at 90° or 0° relative to the water flow direction when the start / stop rope 32 is pulled.

[0040] A rear pull rope 33 is provided at the middle position of the front end of the monitoring floating platform 1 , and the rear pull rope 33 extends to the wellhead of the inspection wellhead.

[0041] The plurality of floats 12 are respectively and equidistantly arranged on the left steel rope 10 and the right steel rope 11 , and the floats 12 are arranged at the lower ends of the front pulley group 21 and the rear pulley group 22 .

[0042] A method for using a movable floating plate monitoring device for a large-diameter multi-flow-state drainage pipe comprises the following steps:

[0043] S1: The device is equipped with two left and right steel wire ropes 10 and 11 that pass through the entire drainage pipe. Floats 12 are placed on the left and right steel wire ropes 10 and 11, allowing them to float on the water surface, forming a floating rail 9. The monitoring floating platform 1 is installed on the rail. The entire steel wire rope floating rail system can pass through the entire drainage pipe with the help of steel wire ropes. During the monitoring process, the substances and conditions in the water are monitored according to the monitoring requirements, and monitoring is carried out through underwater cameras, water quality analyzers, bottom water level gauges, and flow rate meters;

[0044] S2: When the monitoring floating plate platform 1 needs to be fixed, the upper end of the water sailboard 28 of the driving device 15 is connected to the rotating shaft, and the water sailboard 29 can be rotated from 90 degrees to 0 degrees. The direction of the water sailboard 29 is parallel to the water flow. At this time, the water sailboard 29 is basically not affected by the flow of water. A brake fixing system is configured for the monitoring floating plate platform 1. The clamping hoop 27 is pulled by the fixing rope 18, and the clamping hoop 27 drives the rubber block 26 in the brake disc 25. By configuring a set of brake mechanisms 16 on both sides of the floating plate platform, when the fixing rope is tightened, the fixing rope drives the clamping hoop 27 to retract inward through the fixed pulley, driving the rubber block 26 of the brake disc to hold the wire rope floating rail tightly, so that the monitoring floating plate platform 1 can be stably fixed on the wire rope floating rail 9;

[0045] S3: When the monitoring float platform 1 needs to move, the water sailboard 29 is rotated 90 degrees and perpendicular to the direction of the water flow, and the brake elastic fixing rope 18 is released at the same time. At this time, the monitoring float platform 1 can move forward or backward with the direction of the water flow under the action of the water sailboard 29; through the advancement of the water sailboard, the monitoring float platform can be moved and fixed on the drainage pipe sections with different depths, and the monitoring values of the pipe sections with different depths can be obtained; in the large-diameter, large-depth, full-pipe flow drainage pipeline with a distance of 100-120 meters between the upstream and downstream inspection wells, water quantity and quality monitoring instruments can be deployed at a position 50-60 meters in the middle to obtain accurate and representative monitoring data.

[0046] Example 2:

[0047] The monitoring float platform is equipped with a brake elastic fixing rope 18, a start-stop rope and a rear pull rope that can be used in combination; for example, a spring is configured on the brake disc so that the brake rope is held tightly when it is released, and the brake pad is released when the brake rope is tightened. At this time, the brake elastic fixing rope can be used as a rear pull rope; the water sailboard system can also act as a rear pull rope when it is upstream to simplify the pull rope system; the system can also be equipped with an electronic control system to control the rotation of the water sailboard and the brake fixing system through electric / electromagnetic equipment, so that the system only needs to be equipped with one cable; the water sailboard system under the electronic control system can also be replaced by an electric drive system to push the monitoring float platform forward and backward.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions are deemed to be within the scope of protection of the present invention.

Claims

1. A movable floating plate monitoring device for a large-diameter multi-flow-state drainage pipe, comprising a monitoring floating plate platform, characterized in that: The lower end of the monitoring float platform is respectively provided with an underwater camera, a water quality analyzer, a bottom water level gauge and a flow rate meter from front to back. The monitoring float platform includes a float and a fixed frame, and the fixed frame is symmetrically provided on both sides of the float, and pulley devices are symmetrically provided on both sides of the monitoring float platform. The pulley device is slidably connected to the floating rail, and the floating rail includes a left steel wire rope, a right steel wire rope and a plurality of floats, and the two ends of the left steel wire rope and the right steel wire rope are respectively connected to the fixed anchors of the two inspection well openings, and the left steel wire rope and the right steel wire rope are respectively provided with a plurality of floats, and the floats are respectively fixed to the lower ends of the left steel wire rope and the right steel wire rope, and a brake fixing system and a driving device are provided on the monitoring float platform, and the brake fixing system is installed on one side of the driving device, and the brake fixing system includes a brake mechanism, a fixed pulley and a fixed rope, and the brake mechanism is respectively installed on the floating rails on both sides of the monitoring float platform, and the fixed pulleys are symmetrically arranged on both sides of the floating plate of the monitoring float platform, and a driving device is provided at the rear end of the brake fixing system; The fixing frame includes a front fixing frame and a rear fixing frame, the front fixing frame and the rear fixing frame are symmetrically arranged at the front and rear ends of the monitoring floating plate platform, and the front fixing frame and the rear fixing frame are respectively installed with pulley devices; The pulley device includes a front pulley group and a rear pulley group, the front pulley group is installed on the front fixed frame, the rear pulley group is installed on the rear fixed frame, the rear pulley group and the front pulley group are respectively arranged on the left steel rope and the right steel rope, the front pulley group is horizontally clamped on the left steel rope and the right steel rope respectively through the front symmetrical pulley, the rear pulley group is horizontally clamped on the left steel rope and the right steel rope respectively through the rear symmetrical pulley, and the front symmetrical pulley and the rear symmetrical pulley are respectively arranged on the front fixed frame and the rear fixed frame; The brake mechanism includes a brake disc, a rubber block is provided on the inner side of the brake disc, and the rubber block can be connected to the left steel wire rope and the right steel wire rope. A clamp is provided on the outer side of the brake disc, and one end of the clamp is connected to the fixed rope. The driving device includes a water sailboard, a rotating rod is provided at the upper end of the water sailboard, the water sailboard is arranged at the lower end of the monitoring floating plate platform, a rotating shaft is fixedly provided on the rotating rod, a rotating wheel is installed on the rotating shaft, and a start-stop rope is connected to the rotating wheel; The water sailboard can rotate at 90° or 0° relative to the direction of the water flow during the pulling process of the start-stop rope.

2. The movable floating plate monitoring device for a large-diameter multi-flow-state drainage pipe according to claim 1 is characterized in that: The brake disc is in an arc shape, and the rubber block is in an arc shape and closely adheres to the inner side of the brake disc.

3. The movable floating plate monitoring device for a large-diameter multi-flow-state drainage pipe according to claim 1 is characterized in that: A rear pull rope is provided at the middle position of the front end of the monitoring floating plate platform, and the rear pull rope extends to the wellhead of the inspection wellhead.

4. The movable floating plate monitoring device for a large-diameter multi-flow-state drainage pipe according to claim 1, characterized in that: A plurality of floats are respectively arranged at equal intervals on the left steel rope and the right steel rope, and the floats are arranged at the lower ends of the front pulley group and the rear pulley group.

5. A method for using a movable floating plate monitoring device for a large-diameter multi-flow-state drainage pipe, characterized in that: The movable floating plate monitoring device is the movable floating plate monitoring device according to any one of claims 1 to 4, comprising the following steps: S1: The device is equipped with two left and right steel wire ropes that pass through the entire drainage pipe. Floats are placed on the steel wire ropes, allowing them to float on the water surface, forming a floating track. The monitoring platform is installed on the track. The entire steel wire rope floating track system uses the steel wire ropes to pass through the entire drainage pipe. During the monitoring process, the substances and conditions in the water are monitored according to the monitoring requirements. The monitoring is carried out using underwater cameras, water quality analyzers, bottom water level gauges, and flow rate meters. S2: When monitoring needs to be stopped, the upper end of the water sailboard of the driving device is connected to the rotating shaft, and the water sailboard is rotated from 90° to 0°. The direction of the water sailboard is usually parallel to the water flow. At this time, the water sailboard is basically not affected by the flow direction of the water flow. This is completed by a brake fixing system configured on the monitoring floating plate platform. The clamp is pulled by the fixed rope, and the clamp drives the rubber block in the brake disc. By configuring a set of brake mechanisms on both sides of the monitoring floating plate platform, when the fixed rope is tightened, the fixed rope passes through the fixed pulley, driving the clamp inward, driving the rubber block of the brake disc to hold the wire rope floating rail tightly, so that the monitoring floating plate platform is stably fixed on the wire rope floating rail; S3: During the mobile detection process, the water sailboard rotates 90 degrees and is perpendicular to the direction of the water flow, and the fixing rope is loosened at the same time. At this time, the monitoring float platform and the water sailboard move forward or backward with the direction of the water flow under the action of the water flow; through the advancement of the water sailboard, the monitoring float platform can be moved and fixed to the drainage pipe sections at different well depths to obtain monitoring values of the sections at different pipe depths.

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