CN110530471B - Device and method for evaluating sea level rise based on hydrodynamic force - Google Patents
Device and method for evaluating sea level rise based on hydrodynamic force Download PDFInfo
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- CN110530471B CN110530471B CN201910945451.5A CN201910945451A CN110530471B CN 110530471 B CN110530471 B CN 110530471B CN 201910945451 A CN201910945451 A CN 201910945451A CN 110530471 B CN110530471 B CN 110530471B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2961—Acoustic waves for discrete levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
Abstract
The invention belongs to the field of sea level assessment, and particularly relates to a device and a method for assessing sea level rise based on hydrodynamic force, aiming at the problems that the existing device for assessing sea level rise based on hydrodynamic force is low in practicability and difficult to assess from different tide levels, flow rates and flow direction conditions. The evaluation device for sea level rise based on hydrodynamic force is reasonable in structure and convenient to operate, the evaluation device for sea level rise based on hydrodynamic force is high in practicability, a plurality of monitoring buoyancy tanks can collect data from different tide levels, flow speeds and flow directions, and evaluation results are accurate.
Description
Technical Field
The invention relates to the technical field of sea level assessment, in particular to a device and a method for assessing sea level rise based on hydrodynamic force.
Background
The climate change causes phenomena such as earth surface temperature rise, glacier melting and sea level rise, causes huge damage to natural environment where people depend to live, extreme climate events such as drought, flood, high temperature heat wave and typhoon are frequent and concurrent under the influence of climate change, China is one of developing countries which are most seriously affected by adverse effects of climate change, particularly coastal areas with the most vulnerable ecological environment in China, and is facing long-term influence and threat of sea level rise, and according to evaluation of the special committee on climate change (IPCC) between governments of the United nations for the sea level change condition in 1901 + 2010 in 2013: the average growth rate of sea level is 1.7mm/a, and the statistics of the Chinese sea level publication in 2014 show that: in 1980-2014, the average rising rate of the sea level in coastal areas in China is 3mm/a, which is slightly higher than the average level in the world, and the influence of the rising of the sea level on coastal areas is various, including the retreat of coastal erosion, the submergence and swamping of coastal plain low lands, the invasion of estuaries and underground brine, the marine power enhancement, particularly the erosion of coastal areas in the south of the mouth, and the siltation on shoals.
Disclosure of Invention
The invention aims to solve the defects that the evaluation device for the sea level rise based on hydrodynamic force is low in practicability and difficult to evaluate from different tide levels, flow speeds and flow direction conditions in the prior art, and provides an evaluation device and a method for the sea level rise based on hydrodynamic force.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an evaluation device based on hydrodynamic force rises to sea level, including a plurality of monitoring flotation tanks, a serial communication port, equal slidable mounting has the movable plate in a plurality of monitoring flotation tanks, the equal fixed mounting in bottom of a plurality of movable plates has the controller, a plurality of controllers pass through the internet access, the fixed orifices has been seted up on the bottom inner wall of monitoring flotation tank, slidable mounting has the removal post in the fixed orifices, the top fixed mounting of removal post is on the surface of movable plate, the rotation groove has been seted up to the bottom of removal post, it installs the rotation seat to rotate the inslot internal rotation, the bottom fixed mounting who rotates the seat has the controller, rotate a plurality of teeth of fixedly connected with on the seat, the recess has been seted up on the inner wall in rotation groove, fixed mounting has step motor in the recess, the transmission connection has the gear on step motor's the output shaft, gear and tooth meshing, respectively. The evaluation device can realize mutual communication and data transmission on a plurality of monitoring network controllers, can control the rotation and adjustment angle of the sonar through the flow direction of the flow meter at the bottom of the controller, always enables the axial direction of the cross section of the sonar to be parallel to the flow direction of the flow meter, effectively reduces the frequency of scanning the seabed form by the sonar, can predict the rising and falling of the sea level at the probe in advance, can monitor the flow direction and the flow speed of the water flow in the surrounding water area through the flow meter, and performs numerical value fitting and correction according to the monitoring experience.
Preferably, the bottom of the moving column is provided with an annular groove, the top of the controller is fixedly provided with a moving block, and the moving block is in sliding connection with the side wall of the annular groove. The controller drives the moving block to slide in the annular groove when rotating, and the position of the base can be stably controlled when moving.
Preferably, two threaded holes are formed in the top of the movable plate, the lead screws are installed in the two threaded holes in a threaded mode, the top ends of the two lead screws are installed on the inner wall of the top of the monitoring buoyancy tank in a rotating mode, and the first chain wheel is fixedly sleeved on the two lead screws. The first chain wheel drives the corresponding screw rod to rotate, the screw rod drives the movable plate to move, and the movable plate drives the movable column to move towards one side.
Preferably, the meshing has same chain on two first sprockets, has seted up the motor groove on the top inner wall of monitoring flotation tank, and motor inslot fixed mounting has servo motor, and the transmission is connected with the second sprocket on servo motor's the output shaft, second sprocket and chain meshing. The servo motor drives the second chain wheel to rotate, the second chain wheel drives the chain to rotate, and the chain drives the first chain wheel to rotate.
Preferably, the inner walls of the two sides of the monitoring buoyancy tank are provided with sliding grooves, the two sides of the moving plate are fixedly provided with sliding blocks, and the sliding blocks are slidably arranged in the corresponding sliding grooves. The moving plate drives the sliding block to slide in the sliding groove when moving, and the position of the moving plate when moving can be stabilized.
Preferably, the battery is fixedly mounted on the upper surface of the moving plate. The storage battery provides power for the stepping motor, the sonar probe, the flow velocity meter and the servo motor.
Preferably, step motor, sonar probe, current meter and servo motor all with battery electric connection.
Preferably, a plurality of floating blocks are fixedly installed on the outer side of the monitoring buoyancy tank. The flotage can help monitor that the flotation tank floats more steadily on the waters.
A method for evaluating sea level rise based on hydrodynamic force is characterized by comprising the following steps:
s1: the multiple monitoring buoyancy tanks can be connected to the same network controller, so that mutual communication and data transmission can be realized, the multiple monitoring buoyancy tanks can be used for simultaneously monitoring the sea level height and the water flow direction, the storage battery provides a power supply for the stepping motor, the sonar probe, the flow velocity meter and the servo motor, and the monitoring buoyancy tank at the upstream of a water area drives the second chain wheel to rotate through the servo motor during tide rise;
s2: the second chain wheel drives the chain to rotate, the chain drives the first chain wheel to rotate, the first chain wheel drives the corresponding screw rod to rotate, the screw rod drives the moving plate to move, the moving plate drives the moving column to move upwards, the moving column drives the controller to move upwards, the controller slides out of the monitoring buoyancy tank, so that the sonar probe and the flow meter start to monitor the water area, the stepping motor drives the gear to rotate, the gear drives the rotating seat to rotate, and the rotating seat drives the controller to rotate;
s3: the controller drives the sonar probe and the current meter to rotate to positions, so that the sonar probe monitors the sea level height of the surrounding water area, the current meter monitors the water flow direction of the surrounding water area, when the tide moves back, the tide reaches the position of a downstream monitoring buoyancy tank again and is monitored and verified, the monitoring data of a plurality of monitoring buoyancy tanks form a closed loop, a three-dimensional tide numerical model is established based on an ECOMSED model of a public code, and the actual measurement data of the tide level, the flow speed, the flow direction and the like of a corresponding measuring point are verified, so that the simulation calculation result and the actual measurement data are higher in coincidence degree, the hydrodynamic environment change in a simulation zone can be well reflected, a basis is provided for further environmental research, and a formula is y = fX according to the monitoring data; carrying out numerical fitting and correction on B1.
S4: after the sea level rises, the high tide level is obviously increased, the increase value of the high tide level is gradually reduced upwards along the river channel, after the sea level rises, the upward propagation speed of the tide wave is higher, the upward propagation of the tide wave and the influence distance on the upstream river channel are farther, the positions of the tide flow boundary and the tide area boundary move upwards along with the rise of the sea level, after the sea level rises, the average flow of the rising tide and the falling tide of the south-north branch is increased, but the split flow ratio of the falling tide of the north branch is increased greatly, and the river trough of the north branch obtains more tide falling power.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the scheme, a plurality of monitoring floating boxes are connected to the same network controller, mutual communication and data transmission can be achieved, when tide rises, the monitoring floating boxes at the upstream of a water area drive a second chain wheel to rotate through a servo motor, a chain drives a first chain wheel to rotate, the first chain wheel drives a corresponding screw rod to rotate, and a moving plate drives a moving column to move upwards;
(2) according to the scheme, the control seat slides out of the monitoring buoyancy tank, so that the sonar probe and the current meter start to monitor the water area, the stepping motor drives the gear to rotate, the rotating seat drives the control seat to rotate, the sonar probe monitors the sea level height of the surrounding water area, and the current meter monitors the current direction of the surrounding water area;
(3) according to the scheme, numerical value fitting and correction are carried out according to the monitoring data, after the sea level rises, the added value of the high and high tide level is gradually reduced upwards along the river course, after the sea level rises, the upward propagation speed of the tide wave is higher, the positions of the tide flow boundary and the tide area boundary move upwards along with the rise of the sea level, the north branch tide falling split flow ratio is increased greatly, and the north branch river channel obtains more tide falling power.
The evaluation device for sea level rise based on hydrodynamic force is reasonable in structure and convenient to operate, the evaluation device for sea level rise based on hydrodynamic force is high in practicability, a plurality of monitoring buoyancy tanks can collect data from different tide levels, flow speeds and flow directions, and evaluation results are accurate.
Drawings
Fig. 1 is a closed-loop diagram of an apparatus for evaluating sea level elevation based on hydrodynamic force according to the present invention;
fig. 2 is a schematic structural diagram of an apparatus for evaluating sea level rise based on hydrodynamic force according to the present invention;
FIG. 3 is a schematic structural view of part A of the present invention;
FIG. 4 is a schematic structural view of part B of the present invention;
fig. 5 is a schematic structural view of part C of the present invention.
In the figure: 1. monitoring the buoyancy tank; 2. moving the plate; 3. moving the column; 4. a rotating groove; 5. a rotating seat; 6. a stepping motor; 7. a gear; 8. a controller; 9. a sonar probe; 10. a storage battery; 12. a flow rate meter; 13. a screw rod; 14. a first sprocket; 15. a chain; 16. a servo motor; 17. a second sprocket; 18. a moving block; 19. a chute; 20. a slide block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1-5, an assessment device for sea level rise based on hydrodynamic force comprises a plurality of monitoring buoyancy tanks 1, and is characterized in that a movable plate 2 is slidably mounted in each of the monitoring buoyancy tanks 1, controllers are fixedly mounted at the bottoms of the movable plates 2, the controllers are connected through a network, a fixed hole is formed in the inner wall of the bottom of each monitoring buoyancy tank 1, a movable column 3 is slidably mounted in the fixed hole, the top end of the movable column 3 is fixedly mounted on the surface of the movable plate 2, a rotating groove 4 is formed in the bottom of the movable column 3, a rotating seat 5 is rotatably mounted in the rotating groove 4, a controller 8 is fixedly mounted at the bottom of the rotating seat 5, a plurality of teeth are fixedly connected to the rotating seat 5, a groove is formed in the inner wall of the rotating groove 4, a stepping motor 6 is fixedly mounted in the groove, a gear 7 is rotatably connected to an output shaft of the stepping motor 6, and the, the controller 8 is fixedly provided with a sonar probe 9 and a flow velocity meter 12. The evaluation device can realize mutual communication and data transmission on a plurality of monitoring network controllers, can control the rotation and adjustment angle of the sonar through the flow direction of the flow meter at the bottom of the controller, always enables the axial direction of the cross section of the sonar to be parallel to the flow direction of the flow meter, effectively reduces the frequency of scanning the seabed form by the sonar, can predict the rising and falling of the sea level at the probe in advance, can monitor the flow direction and the flow speed of the water flow in the surrounding water area through the flow meter, and performs numerical value fitting and correction according to the monitoring experience.
An annular groove is formed in the bottom of the moving column 3, a moving block 18 is fixedly mounted at the top of the controller 8, and the moving block 18 is in sliding connection with the side wall of the annular groove. The controller drives the moving block to slide in the annular groove when rotating, and the position of the base can be stably controlled when moving.
Two screw holes are formed in the top of the moving plate 2, screw rods 13 are installed in the two screw holes in a threaded mode, the top ends of the two screw rods 13 are installed on the inner wall of the top of the monitoring buoyancy tank 1 in a rotating mode, and first chain wheels 14 are installed on the two screw rods 13 in a fixed sleeved mode. The first chain wheel drives the corresponding screw rod to rotate, the screw rod drives the movable plate to move, and the movable plate drives the movable column to move towards one side.
The meshing has same chain 15 on two first sprockets 14, has seted up the motor groove on the top inner wall of monitoring flotation tank 1, and motor inslot fixed mounting has servo motor 16, and the transmission is connected with second sprocket 17 on servo motor 16's the output shaft, and second sprocket 17 meshes with chain 15. The servo motor drives the second chain wheel to rotate, the second chain wheel drives the chain to rotate, and the chain drives the first chain wheel to rotate.
The inner walls of the two sides of the monitoring buoyancy tank 1 are provided with sliding grooves 19, the two sides of the moving plate 2 are fixedly provided with sliding blocks 20, and the sliding blocks 20 are slidably arranged in the corresponding sliding grooves 19. The moving plate drives the sliding block to slide in the sliding groove when moving, and the position of the moving plate when moving can be stabilized.
The battery 10 is fixedly mounted on the upper surface of the moving plate 2. The storage battery provides power for the stepping motor, the sonar probe, the flow velocity meter and the servo motor.
The stepping motor 6, the sonar probe 9, the flow meter 12 and the servo motor 16 are all electrically connected with the storage battery.
A plurality of floating blocks are fixedly arranged on the outer side of the monitoring buoyancy tank 1. The flotage can help monitor that the flotation tank floats more steadily on the waters.
Example 2:
a method for evaluating sea level rise based on hydrodynamic force is characterized by comprising the following steps:
s1: the multiple monitoring buoyancy tanks 1 are connected to the same network controller, so that mutual communication and data transmission can be realized, the multiple monitoring buoyancy tanks 1 can monitor the sea level height and the water flow direction at the same time, the storage battery provides power for the stepping motor 6, the sonar probe 9, the flow rate meter 12 and the servo motor 16, and the monitoring buoyancy tanks 1 at the upstream of a water area drive the second chain wheel 17 to rotate through the servo motor 16 during tide rise;
s2: the second chain wheel 17 drives the chain 15 to rotate, the chain 15 drives the first chain wheel 14 to rotate, the first chain wheel 14 drives the corresponding screw rod 13 to rotate, the screw rod 13 drives the moving plate 2 to move, the moving plate 2 drives the moving column 3 to move upwards, the moving column 3 drives the controller 8 to move upwards, the controller 8 slides out of the monitoring buoyancy tank 1, so that the sonar probe 9 and the flow velocity meter 12 start to monitor a water area, the stepping motor 6 drives the gear 7 to rotate, the gear 7 drives the rotating seat 5 to rotate, and the rotating seat 5 drives the controller 8 to rotate;
s3: the controller 8 drives the sonar probe 9 and the current meter 12 to rotate, so that the sonar probe 9 monitors the sea level height of the surrounding water area, the current meter 12 monitors the water flow direction of the surrounding water area, when the tide moves back, the tide reaches the position of the downstream monitoring buoyancy tank 1 and is monitored and verified again, the monitoring data of the monitoring buoyancy tanks 1 form a closed loop, a three-dimensional tide numerical model is established based on an ECOMSED model of open codes, and the coincidence degree of simulated calculation results and measured data is higher through verifying the measured data of the tide level, the flow speed, the flow direction and the like of corresponding measuring points, so that hydrodynamic environmental change in a simulation zone can be better reflected, a basis is provided for further environmental research, and a formula is y = fX according to the monitoring data; carrying out numerical fitting and correction on B1.
S4: after the sea level rises, the high tide level is obviously increased, the increase value of the high tide level is gradually reduced upwards along the river channel, after the sea level rises, the upward propagation speed of the tide wave is higher, the upward propagation of the tide wave and the influence distance on the upstream river channel are farther, the positions of the tide flow boundary and the tide area boundary move upwards along with the rise of the sea level, after the sea level rises, the average flow of the rising tide and the falling tide of the south-north branch is increased, but the split flow ratio of the falling tide of the north branch is increased greatly, and the river trough of the north branch obtains more tide falling power.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. An assessment device for sea level rise based on hydrodynamic force comprises a plurality of monitoring buoyancy tanks (1) and is characterized in that a movable plate (2) is slidably mounted in each monitoring buoyancy tank (1), controllers are fixedly mounted at the bottoms of the movable plates (2) and are connected through a network, a fixed hole is formed in the inner wall of the bottom of each monitoring buoyancy tank (1), a movable column (3) is slidably mounted in the fixed hole, the top end of the movable column (3) is fixedly mounted on the surface of each movable plate (2), a rotating groove (4) is formed in the bottom of each movable column (3), a rotating seat (5) is rotatably mounted in each rotating groove (4), a controller (8) is fixedly mounted at the bottom of each rotating seat (5), a plurality of teeth are fixedly connected to each rotating seat (5), a groove is formed in the inner wall of each rotating groove (4), and a stepping motor (6) is fixedly mounted in each groove, an output shaft of the stepping motor (6) is in transmission connection with a gear (7), the gear (7) is meshed with teeth, and a sonar probe (9) and a flow meter (12) are fixedly mounted on the controller (8) respectively;
an annular groove is formed in the bottom of the moving column (3), a moving block (18) is fixedly mounted at the top of the controller (8), and the moving block (18) is connected with the side wall of the annular groove in a sliding mode;
the top of the moving plate (2) is provided with two threaded holes, screw rods (13) are installed in the two threaded holes in a threaded mode, the top ends of the two screw rods (13) are rotatably installed on the inner wall of the top of the monitoring buoyancy tank (1), and first chain wheels (14) are fixedly sleeved on the two screw rods (13);
the two first chain wheels (14) are meshed with the same chain (15), the inner wall of the top of the monitoring buoyancy tank (1) is provided with a motor groove, a servo motor (16) is fixedly installed in the motor groove, the output shaft of the servo motor (16) is in transmission connection with a second chain wheel (17), and the second chain wheel (17) is meshed with the chain (15);
the monitoring floating box is characterized in that sliding grooves (19) are formed in the inner walls of the two sides of the monitoring floating box (1), sliding blocks (20) are fixedly mounted on the two sides of the moving plate (2), and the sliding blocks (20) are slidably mounted in the corresponding sliding grooves (19).
2. The hydrodynamic force-based sea level elevation assessment device according to claim 1, wherein the upper surface of the moving plate (2) is fixedly mounted with a battery (10) and a photovoltaic inverter (11).
3. The device for assessing sea level rise based on hydrodynamic force of claim 1, wherein the stepping motor (6), the sonar probe (9), the flow meter (12) and the servo motor (16) are electrically connected with the storage battery.
4. The hydrodynamic force based sea level elevation assessment device according to claim 1, wherein a plurality of buoyancy blocks are fixedly mounted on the outside of the monitoring buoyancy tank (1).
5. The method for hydrodynamic assessment of a device for assessment of sea level elevation as claimed in claim 1, comprising the steps of:
s1: the multiple monitoring buoyancy tanks (1) are connected to the same network controller, mutual communication and data transmission can be achieved, the multiple monitoring buoyancy tanks (1) can monitor sea level height and water flow direction simultaneously, the storage battery provides power for the stepping motor (6), the sonar probe (9), the flow rate meter (12) and the servo motor (16), and when tide rises, the monitoring buoyancy tank (1) at the upstream of a water area drives the second chain wheel (17) to rotate through the servo motor (16);
s2: the second chain wheel (17) drives the chain (15) to rotate, the chain (15) drives the first chain wheel (14) to rotate, the first chain wheel (14) drives the corresponding screw rod (13) to rotate, the screw rod (13) drives the movable plate (2) to move, the movable plate (2) drives the movable column (3) to move upwards, the movable column (3) drives the controller (8) to move upwards, the controller (8) slides out of the monitoring buoyancy tank (1) so that the sonar probe (9) and the flow velocity meter (12) start to monitor a water area, the stepping motor (6) drives the gear (7) to rotate, the gear (7) drives the rotating seat (5) to rotate, and the rotating seat (5) drives the controller (8) to rotate;
s3: the controller (8) drives the sonar probe (9) and the current meter (12) to rotate, so that the sonar probe (9) monitors the sea level height of the surrounding water area, the current meter (12) monitors the current flow direction of the surrounding water area, when the tide goes back, the tide reaches the position of the downstream monitoring buoyancy tank (1), the tide is monitored and verified again, the monitoring data of the monitoring buoyancy tanks (1) form a closed loop, a three-dimensional tide numerical model is established based on an ECOMSED model of a public code, and the actual measurement data of the tide level, the current speed, the current direction and the like of a corresponding measurement point are verified, so that the coincidence degree of a simulated calculation result and the actual measurement data is high, the hydrodynamic environmental change in a simulation section can be well reflected, and a basis is provided for further environmental research;
s4: after the sea level rises, the high tide level is obviously increased, the increase value of the high tide level is gradually reduced upwards along the river channel, after the sea level rises, the upward propagation speed of the tide wave is higher, the upward propagation of the tide wave and the influence distance on the upstream river channel are farther, the positions of the tide flow boundary and the tide area boundary move upwards along with the rise of the sea level, after the sea level rises, the average flow of the rising tide and the falling tide of the south-north branch is increased, but the split flow ratio of the falling tide of the north branch is increased greatly, and the river trough of the north branch obtains more tide falling power.
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| CN206394821U (en) * | 2016-12-22 | 2017-08-11 | 中国电建集团中南勘测设计研究院有限公司 | Floating marine hydrological observation device |
| CN108917860A (en) * | 2018-05-22 | 2018-11-30 | 赵彦增 | Discharge of river testing method based on laser point cloud of taking photo by plane |
| CN109405931A (en) * | 2018-10-17 | 2019-03-01 | 天津大学 | A method of tide monitoring is carried out using multifunction floating mark |
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