Method for regulating the migration path of water hyacinth in a river channel

Abstract

The application discloses a river water hyacinth migration path regulation method, research and analysis are conducted on the water dynamic characteristics and structure of a river channel by establishing a water dynamic model and a particle tracing model, water flow movement and water hyacinth migration path in the river basin are simulated, and the migration path of the water hyacinth is precisely regulated by combining with a flow regulation facility, a micro water pump is connected to the upstream position of a PE pipe by the application, water is pumped into the PE pipe by the micro water pump, water is sprayed out of the downstream of the PE pipe at an inclined angle by means of the flow guide round holes which are opened at an angle of 45 degrees on the side of the PE pipe, so as to drive the water hyacinth in the river channel to move downstream for regulation, the migration path of the water hyacinth is regulated, the water hyacinth floating object is collected according to the set planned river route, and the water hyacinth is concentrated for treatment, so that the foundation is laid for realizing the ecological landscape regulation effect of a free river, clean water, green bank and beautiful scenery.

Description

Technical Field

[0001] This invention relates to the field of river water environment management technology, specifically a method for regulating the migration path of water hyacinth in rivers. Background Technology

[0002] Currently, water hyacinth in river channels mainly exhibits seasonal bursts of growth in upstream waters, then migrates downstream with the water flow, rapidly multiplying and spreading in suitable areas of downstream river channels. This gradually obstructs waterways, affecting navigation, blocking sluice gates, and severely impacting flood control safety. Furthermore, the rampant growth of water hyacinth restricts water flow, reduces dissolved oxygen levels, lowers pH, and increases CO2 concentration. The rotting of water hyacinth roots causes the water to become acidic and foul-smelling, exacerbating eutrophication and impacting the survival of aquatic animals, even leading to mass mortality. Water hyacinth can also accumulate heavy metals. After decomposing, water hyacinths sink to the bottom of the water, forming a layer with high heavy metal content, which directly kills benthic organisms. Water hyacinths cover the water surface, increasing evaporation and causing water resource loss. Existing salvage methods generally rely on manual and mechanical operations, which are labor-intensive and have poor overall effectiveness, making it difficult to meet the needs of large-scale remediation. According to relevant research results, the operation of water hyacinths is related to factors such as water power and wind power. Therefore, utilizing water power can improve the comprehensive management effect, change the current passive management status, facilitate the integrated development of related technologies, promote the centralized utilization of resources, and form a long-term mechanism.

[0003] Currently, the lack of means to regulate the migration path of water hyacinth in rivers makes it impossible to control its movement and thus hinders centralized harmless treatment. Furthermore, the inability to regulate its migration path allows water hyacinth to proliferate rapidly in the upstream sections and spread downstream, leading to its rapid reproduction and growth in the downstream areas and its tributaries. This makes it impossible to control the water hyacinth's spread through its migration path, increasing the difficulty of subsequent treatment. Therefore, it is necessary to regulate the migration path of water hyacinth in rivers. Summary of the Invention

[0004] This invention provides a method for regulating the migration path of water hyacinth in rivers. This method effectively solves the problem mentioned in the background art: the current lack of means to regulate the migration path of water hyacinth in rivers makes it impossible to control its migration path, thus hindering centralized harmless treatment. Furthermore, because the migration path of water hyacinth cannot be regulated, after an explosive growth in the upstream section, it spreads downstream using water flow, leading to rapid reproduction and growth of water hyacinth in the downstream section and its tributaries. This makes it impossible to control the migration and spread of water hyacinth, increasing the difficulty of subsequent water hyacinth treatment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for regulating the migration path of water hyacinth in river channels, which studies and analyzes the hydrodynamic characteristics and structure of river channels by establishing a hydrodynamic model and cooperating with a particle tracer model, and simulates the water flow movement and migration path of water hyacinth in the river basin, and achieves precise regulation of the migration path of water hyacinth by combining diversion and regulation facilities.

[0006] This control technique specifically includes the following steps:

[0007] S1. Monitoring and risk assessment of water hyacinth;

[0008] S2. Establish a hydrodynamic model of the river channel;

[0009] S3, Simulate the migration path of water hyacinth in the river channel;

[0010] S4. Install diversion pipe migration and diversion control facilities.

[0011] According to the above technical solution, in S1, water hyacinth monitoring and risk assessment refers to monitoring the floating water hyacinth in the treated river channel through monitoring equipment, analyzing the cause of the water hyacinth outbreak through monitoring data, and conducting risk assessment on the floating water hyacinth in the river channel.

[0012] When analyzing the specific causes of water hyacinth outbreaks, the analysis mainly considers multiple aspects, including local meteorological factors, hydrological factors, nutrient-rich elements in the water, water pollution, and biological factors, to comprehensively analyze and manage the formation of water hyacinth in the river. Risk assessment is also conducted based on the growth characteristics of water hyacinth in the river.

[0013] According to the above technical solution, in S2, establishing a river channel hydrodynamic model refers to studying and analyzing the hydrodynamic characteristics and structure of the river channel through the establishment of a hydrodynamic model.

[0014] When establishing a hydrodynamic model of a river channel, the boundaries of the river channel to be studied are first delineated, the study area of ​​the river channel is divided, a computational grid is generated, underwater elevation data is interpolated, underwater topography is created, boundary conditions are set, model parameters are calibrated, and river water level, river water temperature, and river flow velocity are verified.

[0015] By conducting relevant two-dimensional hydrodynamic simulation studies, we can comprehensively study the hydrodynamic characteristics and structure of river channels, and provide a reliable dynamic field for the river drift movement and ecological model of water hyacinth.

[0016] According to the above technical solution, in S3, simulating the migration path of water hyacinth in a river channel refers to simulating and calculating the water flow movement and migration path of water hyacinth in a river basin by coupling a Lagrange particle tracer model on the basis of a hydrodynamic model. This includes building a water quality model framework, determining the simulated substances and physical processes, coupling the hydrodynamic model and checking the mass conservation, and calibrating the model parameters.

[0017] The main principle of the Lagrange particle tracer model is to use the flow field results calculated in real time by the hydrodynamic model, and rely on the particle motion trajectory to clearly show the spatial water flow motion, thereby reflecting the spatial distribution and migration path of floating objects in the water.

[0018] By comprehensively investigating the movement and changes of water flow within the river channel and combining this with scenario simulation, the aim is to ultimately investigate the specific migration process of floating objects carried by the water flow in different river areas within the river channel space.

[0019] According to the above technical solution, in S4, setting up the diversion pipe migration diversion and control facility mainly refers to setting up the interception diversion and control facility in the control point area of ​​the river gate according to the simulation results of the tracer particles, controlling the floating water hyacinth to drift and collect according to the set planned river route, and then carrying out harmless centralized treatment.

[0020] When using diversion and regulation facilities to intercept, divert, and regulate the path of water hyacinth, a PE conduit structure suspended in the river water is mainly used to regulate the movement path of water hyacinth in the treated river.

[0021] According to the above technical solution, the wall thickness of the PE conduit is 10 cm, the diameter of the PE conduit is 40 cm, and a flow guide hole with an angle of 45 degrees to the conduit axis is opened at the midpoint of one side of the PE conduit. The diameter of the flow guide hole is 3 cm, and the flow guide holes are opened at equal intervals of 1 meter along the midpoint of one side of the PE conduit. After the flow guide holes are opened, the water spray direction of their openings points to the downstream of the river.

[0022] According to the above technical solution, when the PE conduit is laid out, its length is mainly determined based on the width of the river outlet and the water flow conditions. The hydrodynamic field is simulated and calculated according to the Lagrange particle tracer model in step S3, and the length of the PE conduit float and its extension direction are determined based on the simulation results.

[0023] According to the above technical solution, a collar is embedded in the inner center of the PE conduit, and a hexagonal prism is embedded and slidably connected within the collar. Six matching grooves are opened on the inner wall of the collar, and the edges of the hexagonal prism are correspondingly matched and connected within the matching grooves. The PE conduit moves up and down along the outer edge of the hexagonal prism through the collar, thereby adjusting the height of the PE conduit according to the water level of the treated river, so that the PE conduit is suspended on the water surface. A stop bar is connected to the top of the hexagonal prism by screws. The stop bar mainly restricts the position of the collar to prevent it from coming off, and the height of the stop bar is equal to the historical highest water level of the treated river.

[0024] According to the above technical solution, a drive motor is installed at the bottom of the river channel through a protective box, and a reduction gearbox is connected to the top of the drive motor. After the output shaft of the drive motor is decelerated by the reduction gearbox, the output shaft drives the hexagonal prism to rotate. The rotation of the hexagonal prism drives the collar and PE pipe to rotate synchronously, thereby adjusting the water spray direction of the PE pipe. Furthermore, by adjusting the angle and position of the PE pipe, the PE pipe will not affect the normal navigation of the waterway.

[0025] According to the above technical solution, after the position of the PE conduit on the river surface is restricted, a miniature water pump is connected to the middle of the upstream of the PE conduit. The miniature water pump pumps water into the PE conduit, and at the same time, the water is sprayed out through the nozzle through the guide hole opened at a 45-degree angle to the side of the PE conduit, so as to drive the water hyacinth in the river to move downstream, thereby realizing the control of the movement path of the water hyacinth.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. By monitoring and risk assessing water hyacinth, it is convenient to monitor water hyacinth in the treated river channels. At the same time, the monitoring data can be used to analyze the causes of water hyacinth outbreaks and to conduct risk assessments of water hyacinth floating in the river channels. Furthermore, by comprehensively analyzing multiple aspects of local river channel meteorological factors, hydrological factors, eutrophic elements in the water body, water pollution in the river channel, and biological factors, the treatment of the treated river channels can be carried out, ensuring the accuracy of the judgment of the causes of water hyacinth formation in the treated river channels, and also improving the accuracy of the risk assessment of water hyacinth in the river channels.

[0028] 2. By establishing a hydrodynamic model, it is convenient to study and analyze the hydrodynamic characteristics and structure of the treated river channel. This facilitates a comprehensive study of the hydrodynamic characteristics and structure of the treated river channel, providing a reliable dynamic field for the river drift movement and ecological model of water hyacinth. Furthermore, by coupling a Lagrange particle tracer model on the basis of the hydrodynamic model, it is convenient to simulate and calculate the water flow movement and migration path of water hyacinth in the river basin, better reflecting the spatial distribution and migration path of floating objects in the water body. This makes it easier to determine the specific migration process of floating water hyacinth in the river channel, providing technical support for subsequent interception and control, and facilitating better path control of water hyacinth in the river channel.

[0029] 3. By setting up intercepting PE pipes in the control point area of ​​the river gate, it is convenient to transport, collect and centrally process floating water hyacinths along a set route. When using PE pipes for interception and control, the inner ring of the PE pipe allows the ring to move up and down along the outer side of the hexagonal prism, which facilitates the adjustment of the position and height of the PE pipe according to the water level. This ensures that the PE pipe is always suspended above the water in the treated river, allowing the PE pipe to better intercept and control the water on the surface of the treated river.

[0030] Furthermore, the drive motor and gearbox facilitate the low-speed rotation of the hexagonal prism, thereby enabling the hexagonal prism to drive the collar and PE conduit to rotate. This allows for adjustment of the position and angle of the PE conduit, thereby changing the direction of water spray and guiding through the PE conduit. This facilitates better path adjustment and ensures that the PE conduit does not obstruct the normal passage of waterways and navigation channels.

[0031] By adjusting the height and angle of the PE conduit as described above, the position of the PE conduit becomes more flexible, making it easier to adapt to actual needs and meet the requirements of river management. At the same time, it can manage the river without affecting the normal passage of waterways and navigation channels, facilitating better management work.

[0032] 4. A miniature water pump is connected upstream of the PE conduit to facilitate pumping water into the PE conduit. Simultaneously, the water is sprayed at an angle downstream of the PE conduit through a 45-degree side guide hole, which drives the water hyacinths in the river to move downstream in a controlled manner. This allows for the regulation of the water hyacinths' movement path, ensuring that the floating water hyacinths drift and collect along a pre-planned river route for centralized treatment. This lays the foundation for achieving the ecological landscape restoration effect of unobstructed rivers, clear water, green banks, and beautiful scenery. Attached Figure Description

[0033] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0034] In the attached diagram:

[0035] Figure 1 This is a schematic diagram of the control technology of the present invention;

[0036] Figure 2 This is a schematic diagram of the PE catheter flow control of the present invention;

[0037] Figure 3 This is a transverse arrangement diagram of the PE conduit of the present invention. Detailed Implementation

[0038] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0039] Example: Figure 1 As shown, the present invention provides a technical solution, a method for regulating the migration path of water hyacinth in a river. By establishing a hydrodynamic model and cooperating with a particle tracer model, the hydrodynamic characteristics and structure of the river are studied and analyzed, and the water flow and migration path of water hyacinth in the river basin are simulated. Combined with diversion and regulation facilities, the migration path of water hyacinth is precisely regulated.

[0040] This control technique specifically includes the following steps:

[0041] S1. Monitoring and risk assessment of water hyacinth;

[0042] S2. Establish a hydrodynamic model of the river channel;

[0043] S3, Simulate the migration path of water hyacinth in the river channel;

[0044] S4. Install diversion pipe migration and diversion control facilities.

[0045] Based on the above technical solution, in S1, water hyacinth monitoring and risk assessment refers to monitoring the floating water hyacinth in the treated river channel through monitoring equipment, analyzing the cause of the water hyacinth outbreak through monitoring data, and conducting risk assessment on the floating water hyacinth in the river channel.

[0046] When analyzing the specific causes of water hyacinth outbreaks, the analysis mainly considers multiple aspects, including local meteorological factors, hydrological factors, nutrient-rich elements in the water, water pollution, and biological factors, to comprehensively analyze and manage the formation of water hyacinth in the river. Risk assessment is also conducted based on the growth characteristics of water hyacinth in the river.

[0047] Based on the above technical solution, in S2, establishing a river channel hydrodynamic model refers to studying and analyzing the hydrodynamic characteristics and structure of the river channel through the establishment of a hydrodynamic model.

[0048] When establishing a hydrodynamic model of a river channel, the boundaries of the river channel to be studied are first delineated, the study area of ​​the river channel is divided, a computational grid is generated, underwater elevation data is interpolated, underwater topography is created, boundary conditions are set, model parameters are calibrated, and river water level, river water temperature, and river flow velocity are verified.

[0049] By conducting relevant two-dimensional hydrodynamic simulation studies, we can comprehensively study the hydrodynamic characteristics and structure of river channels, and provide a reliable dynamic field for the river drift movement and ecological model of water hyacinth.

[0050] Based on the above technical solution, in S3, simulating the migration path of water hyacinth in a river channel refers to simulating and calculating the water flow movement and migration path of water hyacinth in a river basin by coupling a Lagrange particle tracer model on the basis of a hydrodynamic model. This includes building a water quality model framework, determining the simulated substances and physical processes, coupling the hydrodynamic model and checking the mass conservation, and calibrating the model parameters.

[0051] The main principle of the Lagrange particle tracer model is to use the flow velocity field results calculated in real time by the hydrodynamic model, and rely on the particle motion trajectory to clearly show the spatial water flow motion, thereby reflecting the spatial distribution and migration path of floating objects in the water.

[0052] By comprehensively investigating the movement and changes of water flow within the river channel and combining this with scenario simulation, the aim is to ultimately investigate the specific migration process of floating objects carried by the water flow in different river areas within the river channel space.

[0053] like Figure 2-3 As shown, based on the above technical solution, in S4, setting up the diversion pipe migration diversion and control facility mainly refers to setting up the interception diversion and control facility in the control point area of ​​the river gate according to the simulation results of the tracer particles, controlling the floating water hyacinth to drift and collect according to the set planned river route, and then carrying out harmless centralized treatment.

[0054] When using diversion and regulation facilities to intercept, divert, and regulate the path of water hyacinth, a PE conduit structure suspended in the river water is mainly used to regulate the movement path of water hyacinth in the treated river.

[0055] Based on the above technical solution, the wall thickness of the PE conduit is 10 cm, the diameter of the PE conduit is 40 cm, and a flow guide hole with an angle of 45 degrees to the conduit axis is opened at the midpoint of one side of the PE conduit. The diameter of the flow guide hole is 3 cm, and the flow guide holes are opened at equal intervals of 1 meter along the midpoint of one side of the PE conduit. After the flow guide holes are opened, the direction of water spray from their openings points downstream of the river.

[0056] Based on the above technical solution, when the PE conduit is laid out, its length is mainly determined according to the width of the river outlet and the water flow conditions. The hydrodynamic field is simulated and calculated according to the Lagrange particle tracer model in step S3, and the length of the PE conduit float and its extension direction are determined according to the simulation results.

[0057] Based on the above technical solution, a collar is embedded in the inner center of the PE conduit, and a hexagonal prism is embedded in the collar for a sliding connection. Six matching grooves are opened on the inner wall of the collar, and the edges of the hexagonal prism are all matched and connected in the matching grooves. The PE conduit moves up and down by the collar along the outer edge of the hexagonal prism, thereby adjusting the height of the PE conduit according to the water level of the treated river, so that the PE conduit is suspended on the water surface. A stop bar is connected to the top of the hexagonal prism by screws. The stop bar mainly restricts the position of the collar to prevent it from falling out, and the height of the stop bar is equal to the historical highest water level of the treated river.

[0058] Based on the above technical solution, a drive motor is installed at the bottom of the river channel through a protective box, and a reduction gearbox is connected to the top of the drive motor. After the output shaft of the drive motor is reduced in speed by the reduction gearbox, the output shaft drives the hexagonal prism to rotate. The rotation of the hexagonal prism drives the collar and PE pipe to rotate synchronously, thereby adjusting the water spray direction of the PE pipe. Furthermore, by adjusting the angle and position of the PE pipe, the PE pipe will not affect the normal navigation of the waterway.

[0059] Based on the above technical solution, after the position of the PE conduit on the river surface is restricted, a miniature water pump is connected to the middle of the upstream of the PE conduit. The miniature water pump pumps water into the PE conduit, and at the same time, the water is sprayed out through the nozzle through the guide hole opened at a 45-degree angle to the side of the PE conduit, so as to drive the water hyacinth in the river to move downstream, thereby realizing the control of the movement path of the water hyacinth.

[0060] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for regulating the migration path of water hyacinth in river channels, characterized by: By establishing a hydrodynamic model and combining it with a particle tracer model, we can study and analyze the hydrodynamic characteristics and structure of the river channel, simulate the water flow and migration path of water hyacinth in the river basin, and combine it with diversion and control facilities to achieve precise control of the migration path of water hyacinth. This control method specifically includes the following steps: S1. Monitoring and risk assessment of water hyacinth; S2. Establish a hydrodynamic model of the river channel; S3, Simulate the migration path of water hyacinth in the river channel; S4. Install diversion and diversion control facilities for the diversion pipe migration; When using diversion and control facilities to intercept and guide water hyacinth and regulate its path, a PE conduit structure suspended in the river water is used to regulate the movement path of the water hyacinth in the treated river. The PE conduit has a wall thickness of 10 cm and a diameter of 40 cm. A diversion hole with an angle of 45 degrees to the conduit axis is opened at the midpoint of one side of the PE conduit. The diameter of the diversion hole is 3 cm. The diversion holes are opened at equal intervals of 1 meter along the midpoint of one side of the PE conduit. After the diversion holes are opened, the water spray direction of their openings points downstream of the river. The PE conduit has a collar embedded in its inner center, and a hexagonal prism is embedded in the collar for a sliding connection. Six grooves are provided on the inner wall of the collar, and the edges of the hexagonal prism are all connected to the grooves. The PE conduit moves up and down along the outer edge of the hexagonal prism through the collar, thereby adjusting the height of the PE conduit according to the water level of the river being treated, so that the PE conduit is suspended on the water surface. A stop bar is connected to the top of the hexagonal prism by screws. The stop bar restricts the position of the collar to prevent it from coming off, and the height of the stop bar is equal to the historical highest water level of the river being treated. A drive motor is installed at the bottom of the river channel through a protective box, and a gearbox is connected to the top of the drive motor. After the output shaft of the drive motor is reduced in speed by the gearbox, the output shaft drives the hexagonal prism to rotate. The rotation of the hexagonal prism drives the collar and PE pipe to rotate synchronously, thereby adjusting the water spray direction of the PE pipe. By adjusting the angle and position of the PE pipe, the PE pipe will not affect the normal navigation of the waterway. After the position of the PE conduit on the river surface is restricted, a miniature water pump is connected to the middle of the upstream of the PE conduit. The miniature water pump pumps water into the PE conduit, and at the same time, the water is sprayed out through the nozzle through the guide hole opened at a 45-degree angle to the side of the PE conduit, so as to drive the water hyacinth in the river to move downstream, thereby controlling the movement path of the water hyacinth.

2. The method for regulating the migration path of water hyacinth in river channels according to claim 1, characterized in that: In S1, water hyacinth monitoring and risk assessment refers to monitoring the floating water hyacinth in the treated river channel using monitoring equipment, analyzing the cause of the water hyacinth outbreak through monitoring data, and conducting a risk assessment of the floating water hyacinth in the river channel. When analyzing the specific causes of water hyacinth outbreaks, we comprehensively analyze the formation of water hyacinth in rivers from multiple aspects, including local meteorological factors, hydrological factors, nutrient elements in the water, water pollution in the river, and biological factors. We also conduct risk assessments based on the growth characteristics of water hyacinth in rivers.

3. The method for regulating the migration path of water hyacinth in river channels according to claim 1, characterized in that: In S2, establishing a river channel hydrodynamic model refers to studying and analyzing the hydrodynamic characteristics and structure of the river channel through the establishment of a hydrodynamic model. When establishing a hydrodynamic model of a river channel, the boundaries of the river channel to be studied are first delineated, the study area of ​​the river channel is divided, a computational grid is generated, underwater elevation data is interpolated, underwater topography is created, boundary conditions are set, model parameters are calibrated, and river water level, river water temperature, and river flow velocity are verified. By conducting relevant simulation studies on two-dimensional hydrodynamics, we can comprehensively study the hydrodynamic characteristics and structure of the river channel and provide a reliable dynamic field for the river drift movement and ecological model of water hyacinth.

4. The method for regulating the migration path of water hyacinth in river channels according to claim 3, characterized in that: In S3, simulating the migration path of water hyacinth in a river channel refers to simulating and calculating the water flow movement and migration path of water hyacinth in a river basin by coupling a Lagrange particle tracer model on the basis of a hydrodynamic model. This includes building a water quality model framework, determining the simulated substances and physical processes, coupling the hydrodynamic model and checking the mass conservation, and calibrating the model parameters. The principle of the Lagrange particle tracer model is to use the flow velocity field results calculated in real time by the hydrodynamic model, and rely on the particle motion trajectory to clearly show the spatial water flow motion, thereby reflecting the spatial distribution and migration path of floating objects in the water. By comprehensively investigating the movement and changes of water flow within the river channel and combining this with scenario simulation, the aim is to ultimately investigate the specific migration process of floating objects carried by the water flow in different river areas within the river channel space.

5. The method for regulating the migration path of water hyacinth in river channels according to claim 1, characterized in that: In S4, setting up a diversion pipe migration and diversion control facility refers to setting up an interception and diversion control facility in the control point area of ​​the river gate according to the simulation results of the tracer particles, controlling the floating water hyacinth to drift and collect according to the set planned river route, and then carrying out harmless centralized treatment.

6. The method for regulating the migration path of water hyacinth in river channels according to claim 5, characterized in that: When the PE conduit is laid out, its length is determined according to the width of the river outlet and the water flow conditions. The hydrodynamic field is simulated and calculated based on the Lagrange particle tracer model in step S3, and the length of the PE conduit float and its extension direction are determined based on the simulation results.

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