Method and related device for determining suspension river treatment scheme
By building a three-dimensional geometric model of the hanging river and a digital twin system to simulate the bend straightening solution and selecting the best governance solution, the problem of low efficiency of hanging river management is solved, and the river safety and ecological environment are improved.
Patent Information
- Application Number
- CN202510541795.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2025-07-29
AI Technical Summary
The efficiency of hanging river management in the existing technology is low, and it cannot effectively solve the problems of riverbed elevation, increased flood risk, ecological environment damage and reduced river navigation safety.
By obtaining geographical and hydrological data of the hanging river, building a three-dimensional geometric model, simulating the process of bending and straightening, using a digital twin system to predict the governance effect, selecting the best solution for dredging, silting and shaping, including bending, dividing, ecological restoration and other means.
It improves the efficiency of hanging river management, reduces flood risk, restores the ecological environment, and improves the navigation capacity and ecological functions of the river.
Smart Images
Figure CN120387678A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of levee river treatment, and particularly to a method for determining a levee river treatment plan and related devices. Background Art
[0002] A river with a riverbed higher than the ground on both banks is called an "above-ground river" or "levee river". The development of the basin is controlled by the erosion and transportation of high-sediment rivers: in the middle and lower reaches where the river valley is open and relatively flat, a large amount of sediment accumulates, resulting in a continuous rise of the riverbed and a relative rise in the water level. In order to prevent water disasters, the levees on both banks are continuously raised. Over time, the riverbed is higher than the ground on both banks, becoming a levee river.
[0003] The levee river is a complex and long-existing geographical and environmental problem. In the prior art, the levee river treatment plan is mostly determined based on experience, and there are still cases where the achieved effect after implementation is not ideal. Therefore, the efficiency of levee river treatment in the prior art is relatively low. Summary of the Invention
[0004] In view of the above problems, this application provides a method for determining a levee river treatment plan and related devices to achieve the purpose of efficiently treating levee rivers. The specific solutions are as follows:
[0005] The first aspect of this application provides a method for determining a levee river treatment plan, including:
[0006] Obtain the geographical data of the target levee river, analyze the geographical data to obtain the hydrological data of the target levee river and the information of the river section to be treated of the target levee river; the information of the river section to be treated includes the information of the high-sedimentation-risk bend;
[0007] Input the geographical data, hydrological data and the information of the river section to be treated into the geographic information system platform to obtain a three-dimensional geometric model of the target levee river;
[0008] Input the geographical data, hydrological data and the information of the river section to be treated into the computational fluid dynamics tool to simulate the process of straightening the high-sedimentation-risk bend and obtain the simulation result;
[0009] Input the three-dimensional geometric model and the simulation result into the digital twin system to obtain the treatment prediction result of the target levee river;
[0010] Adopt a cut-off and straightening scheme that meets the expected treatment effect to dredge and shape the target levee river;
[0011] Input the on-site data obtained from the on-site data acquisition system into the digital twin system through the data transmission network to obtain the on-site monitoring result of the target levee river.
[0012] In a possible implementation, shaping includes cut-off and bifurcation. The process of shaping the target levee river includes:
[0013] Cut off the meander of the bend with high sedimentation risk, and set a dam at the entrance of the new river course after the cut-off.
[0014] Divide the target hanging river into a main river course and a braided river course. The water flow distribution ratio between the main river course and the braided river course is one of the three water flow distribution ratios of 6:4, 7:3, and 8:2 determined based on the river course function, ecological requirements, terrain condition data, and hydrological data in the river course information to be treated.
[0015] In a possible implementation, input the geographical data, hydrological data, and the information of the river course to be treated into a computational fluid dynamics tool to simulate the process of cutting off the meander of the bend with high sedimentation risk, and obtain simulation results, including:
[0016] Set the initial conditions and initial boundaries based on the geographical data, hydrological data, and the bend with high sedimentation risk.
[0017] Carry out the cut-off and straightening of the bend with high sedimentation risk based on the initial conditions and initial boundaries to obtain simulation results; the simulation results include the influence results of the cut-off and straightening on the water flow velocity and sediment transport of the bend with high sedimentation risk.
[0018] In a possible implementation, the process of dredging and cleaning the target hanging river includes:
[0019] Use a jet stirring device to treat the silt and silt loam in the target hanging river, and use a cutter device to treat the cohesive soil in the target hanging river.
[0020] In a possible implementation, it also includes ecological restoration;
[0021] Plant water-tolerant plants on both sides of the braided river course to form an ecological buffer zone, and the ecological buffer zone includes reeds and cattails.
[0022] In a possible implementation, it also includes dam body regulation;
[0023] The dams of the target hanging river include silt-retaining dams and control dams;
[0024] The silt-retaining dam is a dam body made of loess and wood fibers obtained by modular construction combined with 3D printing technology;
[0025] The control dam is a dam body composed of steel bars and concrete.
[0026] The second aspect of this application provides a device for determining a hanging river treatment plan, including:
[0027] An acquisition unit, configured to acquire the geographical data of the target hanging river, analyze the geographical data to obtain the hydrological data of the target hanging river and the information of the river course to be treated; the information of the river course to be treated includes the information of the bend with high sedimentation risk;
[0028] A geometric model construction unit for inputting geographical data, hydrological data, and information on the river course to be treated into a geographic information system platform to obtain a three-dimensional geometric model of the target meandering river;
[0029] A simulation unit for inputting geographical data, hydrological data, and information on the river course to be treated into a computational fluid dynamics tool to simulate the process of straightening a bend with high siltation risk and obtain a simulation result;
[0030] A digital twin unit for inputting the three-dimensional geometric model and the simulation result into a digital twin system to obtain a governance prediction result of the target meandering river;
[0031] A meandering river governance unit for dredging and shaping the target meandering river using a cut-off and straightening scheme that meets the expected governance effect;
[0032] A prediction unit for inputting the on-site data obtained from an on-site data acquisition system into a digital twin system through a data transmission network to obtain an on-site monitoring result of the target meandering river.
[0033] A third aspect of the present application provides a device for determining a meandering river governance scheme, including at least one processor and a memory connected to the processor, wherein:
[0034] The memory is used to store a computer program;
[0035] The processor is used to execute the computer program so that the device for determining a meandering river governance scheme can implement any one of the meandering river governance scheme determination methods described above.
[0036] A fourth aspect of the present application provides a computer program product, including computer-readable instructions, which, when running on an electronic device, enable the electronic device to implement any one of the meandering river governance scheme determination methods described above.
[0037] A fifth aspect of the present application provides a computer storage medium, which carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, they can enable the electronic device to implement any one of the meandering river governance scheme determination methods described above.
[0038] With the above technical solutions, the method and related device for determining the suspension river treatment solution provided by this application obtain the geographical data of the target suspension river. After analyzing the geographical data, the hydrological data of the target suspension river and the information of the river section to be treated are obtained. The geographical data, hydrological data, and the information of the river section to be treated are respectively input into the geographic information system platform and the computational fluid dynamics tool, and the three-dimensional geometric model of the target suspension river and the simulation results of straightening the meandering section with high sedimentation risk of the target suspension river are obtained respectively. The three-dimensional geometric model and the simulation results are input into the digital twin system to obtain the prediction results of the suspension river treatment. The target suspension river is treated with the cut-off and straightening scheme that meets the expected treatment effect in the prediction results, and the on-site data is input into the digital twin system for on-site monitoring. In this application, the digital twin system is used to predict the treatment results of each suspension river treatment solution first, and then the best treatment solution is selected from them for implementation, which improves the efficiency of the suspension river treatment. BRIEF DESCRIPTION OF THE DRAWINGS
[0039] In combination with the accompanying drawings and referring to the following specific embodiments, the above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the original components and elements are not necessarily drawn to scale.
[0040] Figure 1 It is a schematic flowchart of a method for determining the suspension river treatment solution provided by this application;
[0041] Figure 2 It is a schematic structural diagram of a device for determining the suspension river treatment solution provided by this application;
[0042] Figure 3 It is a schematic structural diagram of a device for determining the suspension river treatment solution provided by this application. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0043] The following describes the embodiments of the present application in combination with the accompanying drawings in the embodiments of the present application. The terms used in the embodiments of the present application are only for explaining the specific embodiments of the present application, and are not intended to limit the present application.
[0044] The following describes the embodiments of the present application in combination with the accompanying drawings. Those skilled in the art know that with the development of technology and the emergence of new scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
[0045] In the description, claims and the above-mentioned drawings of this application, terms such as "first", "second", etc. are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, which is only a way of distinguishing objects with the same attributes when describing embodiments of this application. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, so that a process, method, system, product or device including a series of units does not have to be limited to those units, but may include other units that are not clearly listed or are inherent to these processes, methods, products or devices.
[0046] A meandering river is a complex and long-standing geographical and environmental problem, with the following issues:
[0047] Issue 1: Due to the deposition of a large amount of sediment in the river channel, the riverbed keeps rising, increasing the flood risk;
[0048] Issue 2: As the riverbed rises, the surrounding wetland environment is damaged, biodiversity decreases, and ecological functions are impaired;
[0049] Issue 3: The sediment deposition makes the river channel shallower, affecting the safety and efficiency of ship passage and restricting the development of water transportation.
[0050] Based on the above problems, in the prior art, the meandering river treatment plan is often formulated based on experience, but the ideal treatment effect cannot be achieved after the implementation of the meandering river treatment plan formulated based on experience, resulting in low efficiency of meandering river treatment in the prior art.
[0051] This application provides a method for determining a meandering river treatment plan and related devices, and implements the plan after determining the best meandering river treatment plan to solve the above problems brought by the existence of meandering rivers.
[0052] Optionally, refer to Figure 1 , a schematic flowchart of a method for determining a meandering river treatment plan provided by this application.
[0053] As Figure 1 shown, the method for determining a meandering river treatment plan includes the following steps:
[0054] Step 101: Obtain the geographical data of the target meandering river, analyze the geographical data to obtain the hydrological data of the target meandering river and the information of the river channel to be treated of the target meandering river; the information of the river channel to be treated includes the information of the high-sedimentation-risk bend.
[0055] Optionally, collect the geographical data of the target meandering river. The geographical data mainly includes the topographic and geomorphic data of the meandering river and remote sensing images obtained through a geographic information system. Then, by analyzing the topographic and geomorphic data and remote sensing images of the target meandering river, obtain the hydrological data of the target meandering river and the information of the river section to be treated. The information of the river section to be treated includes the information of the bend with high sedimentation risk.
[0056] Specifically, the hydrological data can also be referred to as hydrological conditions, including water depth, flow velocity, sediment concentration, water quality, water temperature, and evaporation. Among them, water quality includes the analyzed chemical components (such as dissolved oxygen, pH value, conductivity, nutrients nitrogen and phosphorus, heavy metals, etc.) and biological indicators (such as the structure of the microbial community in water, the density of phytoplankton, etc., which are indicators that can be used to reflect the ecological health status), and so on.
[0057] Hydrological conditions are mainly used to evaluate the water flow dynamics, sediment transport, and flood risk. The core contents include runoff and sediment transport, water flow velocity and scouring characteristics, water level and groundwater relationship, water quality and suspended solids.
[0058] Runoff and sediment transport include annual runoff, annual sediment transport, and sediment particle size composition. Water flow velocity and scouring characteristics include flow velocity distribution and scouring intensity during the flood season. Water level and groundwater relationship include water level dynamics and groundwater seepage; water quality and suspended solids include sediment concentration and water quality parameters, and so on.
[0059] It should be noted that the information of the river section to be treated includes not only the information of the sedimentation bend but also the topographic condition data of the target meandering river.
[0060] Specifically, the topographic condition data is mainly used for the river channel morphology, riverbed evolution, and potential risk areas of the target meandering river, and mainly includes riverbed elevation and morphology, riverbank structure and stability, and river channel spatial distribution.
[0061] Riverbed elevation and morphology include the longitudinal profile of the riverbed, the cross-section of the riverbed, and the characteristics of the secondary meandering river. Among them, the longitudinal profile of the riverbed mainly measures the elevation change along the river channel, analyzes the riverbed uplift rate and longitudinal slope; the cross-section of the riverbed includes the height difference between the main channel and the floodplain, such as the main channel in the Kaifeng section is 7-8 meters higher than the floodplain and the transverse slope of the floodplain lip; the characteristics of the secondary meandering river include the transverse slope structure with the main channel floodplain lip high and the embankment root low-lying, and three-dimensional topographic data needs to be obtained through satellite remote sensing or geographic information system technology.
[0062] Riverbank structure and stability mainly include riverbank type and riverbank stability. Among them, riverbank types include gentle slope type, steep slope type, or vertical type, and riverbank types affect the erosion and collapse risks; riverbank stability analyzes whether there are potential hazards in the embankment foundation due to seepage or piping through geological exploration.
[0063] The spatial distribution of the river channel includes the floodplain area and distribution, and the underwater topography. Among them, the floodplain area and distribution reflect the inundation range during the flood period and the sediment deposition potential; the underwater topography is used to obtain the thickness of riverbed siltation and the morphological changes through sonar or detectors.
[0064] Step 102: Input the geographical data, hydrological data, and information of the river channel to be treated into the geographic information system platform to obtain a three-dimensional geometric model of the target hanging river.
[0065] Optionally, construct a three-dimensional geometric model of the target hanging river on the geographic information system platform according to the topographic and geomorphic data of the target hanging river, the information of high-siltation-risk bends in the river channel information to be treated, and the hydrological data.
[0066] Specifically, constructing a three-dimensional geometric model of the target hanging river includes the following steps:
[0067] Step 1: Data preparation and preprocessing.
[0068] 1> Data collection and integration.
[0069] Obtain the topographic and geomorphic data, river channel information, and hydrological data of the target hanging river.
[0070] Exemplarily, the topographic and geomorphic data may include the digital elevation model (DEM, Digital Elevation Model), digital orthophoto map (DOM, Digital Orthophoto Map), and riverbank topographic profile of the target hanging river area, which are used to construct the basic topographic framework;
[0071] The river channel information correspondingly extracts the spatial coordinates, river channel boundary lines, and historical siltation data of high-siltation-risk bends, and marks parameters such as the bend curvature radius and river width;
[0072] The hydrological data integrates the flow rate, flow velocity, sediment concentration, and water level dynamic data detected by hydrological stations, and analyzes the water flow dynamic characteristics in combination with the historical flood inundation range.
[0073] 2> Data preprocessing.
[0074] First, unify the coordinates, convert the data from different sources to the same coordinate system, and the coordinate system can be WGS-84 or CGCS2000; then perform data fusion, fill the missing areas of the DEM through interpolation, spatialize the discrete hydrological station data, and generate a continuous hydrological field distribution.
[0075] Step 2: Topographic modeling and river channel morphology reconstruction.
[0076] 1> Basic topographic modeling.
[0077] Generate a three-dimensional terrain surface based on DEM, identify steep and gentle slope areas through contour extraction and slope analysis, and simulate the natural riverbank morphology;
[0078] Then process the highly silted bends, adjust the cross-sectional shape of the river channel according to the bend curvature, increase the width of the floodplain on the outer side of the bend to simulate the siltation effect, and fit the water surface line of the bend using the catenary equation.
[0079] 2> River channel boundary modeling.
[0080] Generate a polygon mesh using the river channel centerline and shoreline, and simulate the mainstream line deviation in combination with a hydrodynamic model (such as Mike 21) to dynamically adjust the river channel boundary;
[0081] For the characteristic areas of the secondary suspended river, such as the high elevation of the main channel beach lip, conduct local refined modeling to reflect the longitudinal and transverse siltation differences of the riverbed.
[0082] Step Three: Hydrological dynamics and sediment transport simulation.
[0083] 1> Hydrological model construction.
[0084] Establish a one-dimensional / two-dimensional hydrodynamic model based on hydrological data to simulate the water level and flow velocity distributions under different discharges, and identify high-risk inundation areas;
[0085] In combination with a sediment transport model, input runoff, sediment concentration, and particle size distribution data to predict the river channel siltation rate and spatial distribution.
[0086] 2> Dynamic interactive feedback.
[0087] Feed back the hydrological simulation results (such as scour depth, siltation thickness) to the terrain model, and dynamically update the riverbed elevation and riverbank morphology through a parametric modeling tool (such as 3D Analyst in ArcGIS Pro).
[0088] Step Four: Generation of three-dimensional geometric model.
[0089] 1> Parametric modeling.
[0090] Use a GIS plug-in to construct the terrain surface and generate a three-dimensional entity of the river channel cross-section through the "extrusion" function;
[0091] Conduct local subdivision modeling for the highly silted bends, and use triangulation or regular grids to represent complex surfaces.
[0092] 2> Model optimization and verification.
[0093] Conduct topological checks to ensure seamless connection between the river channel boundary and the terrain and avoid geometric conflicts;
[0094] Conduct accuracy verification, compare the elevation error of the model through on-site measurement points, and adjust the difference algorithm or locally encrypt the sampling points.
[0095] Step Five: Visualization and analysis application.
[0096] 1> Multi-dimensional visualization.
[0097] Overlay terrain hillshading, hydrological field, and sedimentation risk level color scale to generate a multi-layer three-dimensional scene;
[0098] Support interactive query, click on any point to display attributes such as elevation, flow velocity, and silt thickness.
[0099] Step 103: Input geographical data, hydrological data, and information on the river channel to be treated into a computational fluid dynamics tool, simulate the process of straightening a bend with high sedimentation risk, and obtain the simulation results.
[0100] Step 103 can be carried out simultaneously with Step 102, prior to Step 102, or after Step 102. In this application, no specific requirements are made regarding the execution sequence of Step 102 and Step 103.
[0101] Optionally, input geographical data, hydrological data, and information on the river channel to be treated into CFD (Computational Fluid Dynamics Software), and simulate the process of straightening a bend with high sedimentation risk in this software to obtain the simulation results.
[0102] Specifically, set the initial conditions and initial boundaries based on geographical data, hydrological data, and the bend with high sedimentation risk, and straighten the bend with high sedimentation risk based on the initial conditions and initial boundaries to obtain the simulation results.
[0103] The initial conditions include the water level reflecting the static state of the river at the initial moment of simulation, the flow velocity reflecting the dynamic state of the river at the initial moment of simulation, sediment concentration, etc. For the sediment content of a suspended river, set the sediment concentration distribution at the start of the simulation, which helps to simulate the transport process of sediment in the river.
[0104] The initial boundaries include the setting of the upstream boundary, the downstream boundary, and the solid wall boundary. Set the water level change of the upstream section as the upstream boundary condition, and set the water level change of the downstream section as the downstream boundary setting. The setting of this boundary condition can reflect the influence of the downstream water level on the flow of the suspended river. The setting of the solid wall boundary is mainly to set the riverbank and riverbed of the suspended river as a non-slip solid wall boundary.
[0105] It should be noted that in this application, the simulation of the cut-off value selection scheme for high-sedimentation-risk bends of various target suspended rivers is realized based on CFD, and the impacts of different cut-off value selection schemes on the water flow velocity and sediment transport of high-sedimentation bends are predicted.
[0106] Step 104: Input the three-dimensional geometric model and the simulation results into the digital twin system to obtain the governance prediction results of the target suspended river.
[0107] Input the three-dimensional geometric model of the target suspended river and the simulation results of each cut-off value selection scheme simulated by CFD into the digital twin system to obtain the governance prediction results corresponding to the cut-off value selection scheme for high-sedimentation-risk bends.
[0108] In this application, the digital twin system is used to simulate the governance effects of various cut-off and straightening schemes for high-sedimentation-risk bends in the target suspended river. Based on the simulation results, without any human cost, the relatively optimal cut-off value selection scheme is selected, greatly saving the input of human cost and time cost.
[0109] Step 105: Use the cut-off value selection scheme that meets the expected governance effect to dredge and shape the target suspended river.
[0110] According to the simulation results of CFD, select the relatively optimal cut-off value selection scheme for each high-sedimentation-risk bend. The optimal cut-off value selection scheme is the cut-off value selection scheme that meets the expected governance effect. Use the optimal cut-off and straightening scheme to govern each high-sedimentation-risk bend in the target suspended river, including dredging and shaping specifically.
[0111] Next, the dredging process and the shaping process in the governance process of the target suspended river are introduced in sequence.
[0112] For the dredging process, in this application, a jet mixing device is used to treat silt and silty soil, and a cutter device is used to treat cohesive soil in the target suspended river.
[0113] Specifically, in the dredging process, a hull with a modular assembly design is used. The hull mainly includes a main floating body and an operation floating body. Exemplarily, the total length of the hull is 30 meters, the molded breadth of the ship is 7.3 meters, the molded depth of the ship is 1.8 meters, and the draft is 1.1 meters. Based on this hull with a modular assembly design, the dredging depth can be 6 meters, and the maximum dredging width can be 21 meters.
[0114] It should be noted that using a hull with a modular assembly design is convenient for highway transportation dimensions, transportation, and assembly. In this application, equipment manufacturing and assembly are carried out first. The modular equipment manufacturing and pre-installation are completed at the shipyard and then transported to the construction site for rapid assembly and commissioning. The diesel generator set of the hull is installed in the side floating box at the bow, with a total power of 600 kW to meet the power demand of all shipboard equipment.
[0115] At the tail (main floating body) of the hull, a three-pile double-carriage hydraulic system, a hydraulic mechanism (with a power of 150 kW, which is responsible for driving the bridge to move, operating the cutter, and lifting the steel piles), and a plate-frame bridge are installed. At the head (working floating body) of the hull, a mud pump and a high-pressure flushing water pump are installed. Among them, a flange is installed at the front end of the plate-frame bridge, and through the flange, the plate-frame bridge is connected to the jet mixing device or the cutter device. Among them, the width of the jet mixing device is 7.3 meters, and the jet mixing device is equipped with high-pressure water jet nozzles.
[0116] It should be noted that installing the three-pile double-carriage hydraulic system in this application can achieve the stable and precise positioning of the ship and can operate under the conditions that the flow velocity does not exceed 0.5 m / s and the wave height does not exceed 0.3 m; in terms of the mud pump and the high-pressure flushing water pump, equipment with a power of 200 kW is adopted. When cooperating with the cutter device for construction, the flow rate can reach 2300 m³ / h, the maximum conveying distance is 200 meters, and the sand output is 450 - 650 m³ / h. While when cooperating with the jet mixing device, the clear water flow rate is 800 m³ / h to ensure sufficient water volume to achieve efficient sediment suspension, and the pressure is 6 bar to provide sufficient pressure to effectively disturb the riverbed surface.
[0117] The "three piles" in the three-pile double-carriage hydraulic system refer to the three support piles or positioning piles configured at the stern of the ship. These piles usually have a large cross-sectional area and depth and can be firmly inserted into the soil of the riverbed or the bottom of the river to provide a stable support point for the ship. Through these three support piles, the hull can achieve a more stable positioning on the water surface, reducing the swaying and displacement caused by external factors such as water flow and wind and waves. The "double carriages" refer to the two moving platforms or carriages set at the stern of the ship. These carriages are usually connected to the support piles and can move up and down or left and right along the support piles. The design of the carriages usually takes into account the bearing capacity and stability to ensure that when the ship makes dynamic adjustments, it can move smoothly and maintain the stability of the hull. The configuration of the double carriages allows the hull to make fine adjustments on the horizontal plane, further improving the positioning accuracy and stability of the ship. The hydraulic system is the key part to realize the actions and control of the three-pile double-carriage stable system. It uses the pressure energy of the liquid to transfer energy and control the movement. In this system, the hydraulic system transmits power to the three piles and the double carriages through components such as control valves, pumps, and hydraulic cylinders to realize their lifting, moving, and positioning functions. The advantages of the hydraulic system include high power density, good control performance, and easy implementation of automatic control, etc., which makes it an ideal choice for the hull dynamic stability system;
[0118] The front end of the plate - framed bridge is installed with a flange, through which the plate - framed bridge is connected to the jet mixing device or the cutter device. Among them, the width of the jet mixing device is 7.3 meters to ensure that it can cover a relatively wide riverbed area. The jet mixing device is equipped with high - pressure water jet nozzles, which achieve suspended dredging by disturbing the riverbed sediment. The cutter device is designed specifically for the excavation of conventional soil containing cohesive soil and sandy soil, with strong adaptability.
[0119] The jet mixing device uses high - pressure water jets to disturb the riverbed surface. Through hydrodynamic principles, sediment particles are suspended in the water body, and then are pumped and transported to the designated discharge area by means of a mud pump. This process significantly weakens the cohesion of the riverbed silt, reduces the resistance in the dredging operation, and thus improves the efficiency of the dredging operation.
[0120] Exemplarily, the jet mixing device in this application is equipped with 20 - 24 high - pressure water jet nozzles, with a spacing of 30 cm, which can achieve the maximum disturbance effect. The nozzle angle is set to 30° downward inclination to ensure that sediment particles are more effectively suspended in the water body. The disturbance depth of silt and silt loam is between 0.5 - 1.2 meters to ensure that relatively loose soil can be effectively treated. The nozzles are made of 316L stainless steel, with excellent wear resistance and corrosion resistance to extend the service life of the device. The main structural frame is made of high - strength aluminum alloy material to reduce the equipment weight, improve the stability and operation convenience of the equipment. It is equipped with a flow control valve and a pressure sensor to achieve real - time dynamic adjustment of different working conditions and ensure that the device is always in the best working state.
[0121] The working process of the jet mixing device is as follows:
[0122] Start the high - pressure flushing water pump to provide high - pressure water flow to the nozzles, preparing for disturbing the riverbed surface. The water jets disturb the riverbed surface, making the sediment particles suspended, creating conditions for subsequent sediment extraction and transportation. Use the mud pump in the cabin to transport the suspended sediment through the conveying pipe to the shore or the designated discharge point to complete the dredging and silt removal operation;
[0123] The jet mixing device is suitable for treating relatively loose soil such as silt and silt loam, effectively dealing with these difficult - to - handle soils, and is suitable for scenarios such as inland waterway dredging and shallow - water channel silt removal, improving the navigability of the waterway and the quality of the ecological environment.
[0124] Next, the cutter device for treating cohesive soil in the target suspended river is introduced.
[0125] The general reamer device uses a rotating reamer to cut cohesive soil and sandy soil, and transports the excavated sediment to the discharge area through a slurry pump. This process can effectively destroy the soil layer structure and improve the efficiency of excavation operations. The blades of the reamer include 6 - 8 pieces, arranged in a spiral layout to ensure uniform cutting of the soil layer. The blade diameter is 1.5 - 2 meters to adapt to medium - fine sand, coarse sand, and cohesive soil, ensuring the adaptability of the reamer to different soil types. The power source is hydraulic drive with a power of 150kW, providing sufficient power for the rotation of the reamer. The reamer speed is 20 - 40 rpm, adjustable to adapt to different soil types and working conditions. The maximum excavation depth is 6 meters, capable of handling deeper soil layers. The excavation width is 2.5 - 3.5 meters (affected by the swing angle of the bridge), ensuring that the reamer device can cover a relatively wide side - bank area. The reamer blades are made of high - manganese steel, with excellent wear resistance and impact resistance to extend the service life of the reamer. The tip of the cutter head is coated with tungsten carbide to enhance the cutting force and improve the cutting efficiency of the reamer. The reamer device is designed for cohesive soil, capable of efficiently destroying hardened soil layers and improving the excavation operation efficiency. The reamer device can rotate 30°, covering the side - bank area to adapt to the changing working environment, and cooperate with the slurry pump to quickly transport the excavated sediment to the shore or the designated discharge point, improving the operation efficiency.
[0126] The working process of the reamer device is as follows:
[0127] The hydraulic system starts, and the reamer rotates at a preset speed to prepare for soil cutting. The reamer blades cut the soil layer, breaking cohesive soil or sandy soil to create conditions for sediment transportation, and cooperate with the in - hold slurry pump to discharge the excavated sediment through the pipeline to the shore, completing the dredging operation.
[0128] The reamer device is applicable to soil types such as cohesive soil, medium - fine sand, and coarse sand, and can effectively handle these difficult - to - handle soil types. It is applicable to scenarios such as side - bank reinforcement and deep - water dredging operations, improving the river channel stability and the quality of the ecological environment.
[0129] Next, introduce the slurry pump and high - pressure water jet pump installed at the head of the hull.
[0130] A single slurry pump, which can also be used as a high - pressure water jet pump, realizes function conversion through a pipeline switching mechanism, thereby improving the use efficiency and operation flexibility of the equipment. It is made of high - chromium alloy material, with excellent wear - resistance and corrosion - resistance characteristics to extend the service life of the pump body. It adopts a multi - blade streamline impeller design to improve the transportation efficiency and reduce energy consumption.
[0131] The pump casing is designed in a cylindrical shape and made of high-strength alloy steel, ensuring its stability and reliability under harsh working conditions. This design not only has good wear resistance but also excellent pressure resistance, capable of withstanding the working pressure in a high-pressure environment. The diameter of the pump casing is approximately 1.5 meters, and the depth is 0.8 meters. The internal space design is sufficient to accommodate the impeller and fluid, ensuring the hydrodynamic performance inside the pump body. The reasonable design of the internal space helps to improve the efficiency and stability of the pump. To further extend the service life of the equipment, the inner wall of the pump casing is treated with an anti-corrosion coating. This coating can effectively resist the erosion of various chemical substances, ensuring that the pump casing maintains good performance during long-term use. The impeller is installed at the center of the pump casing and connected to the pump casing through the main shaft. This design ensures that the impeller can evenly contact the fluid during rotation, improving the efficiency of the pump. The number of blades of the impeller is 6, evenly distributed radially. This design helps to reduce the backflow phenomenon of the fluid in the pump, thereby improving the efficiency of the pump. The curvature of the blades is optimized to ensure smoother fluid flow inside the pump, further improving the working efficiency of the pump.
[0132] The inlet of the pump casing is located at the lower part and arranged in a tangential direction. This arrangement can effectively guide the sediment-laden fluid into the pump, reduce the impact of the fluid on the pump casing, and improve the suction efficiency of the pump. The outlet of the pump casing is set at the upper part and directly connected to the conveying pipeline. This design ensures that the treated sediment can be discharged smoothly, improving the pumping efficiency of the pump. The pump body forms a strong suction force through the rotation of the impeller, sucking the sediment mixture in the riverbed into the pump. The streamlined design inside the pump casing ensures the efficient flow of the fluid in the pump, thus smoothly discharging the fluid into the conveying pipeline;
[0133] When designing the pipeline switching mechanism, it is equipped with an automatic control valve system to achieve rapid switching between the sediment suction and high-pressure jet modes, enhancing the convenience and efficiency of operation. The hydraulic control system is used to achieve rapid switching, and its response time is less than 2 seconds, ensuring that the equipment can quickly adapt to the requirements of different working conditions.
[0134] High-pressure water jet nozzle design:
[0135] The nozzle is usually installed on the spraying arm. The total width of the spraying arm is 7.3 meters, ensuring that the nozzle can cover a wide enough working area. The spraying arm is made of high-strength aluminum alloy material, which not only has a lightweight design but also has good corrosion resistance, enabling it to maintain stable performance in harsh working environments. The spraying arm is installed at the front end of the working bridge, and its working range can be flexibly adjusted through the angle adjustment device to adapt to different working environments. A total of 10 nozzles are arranged on the spraying arm, and these nozzles are evenly distributed along the spraying arm to ensure the uniformity of the spraying effect. The spacing between each nozzle is about 0.8 meters, covering the entire width area of the spraying arm to ensure the comprehensiveness of the spraying effect. The flow rate of a single nozzle is about 80 m³ / h, and the total flow rate reaches 800 m³ / h. This high-flow design ensures the high efficiency of the spraying operation. The working pressure of the nozzle is 6 bar, and this high-pressure design can ensure that the water flow has sufficient energy to efficiently disturb the silt and silty soil. The nozzle is made of 316L stainless steel material, which has good wear resistance and can adapt to the high-pressure working environment to ensure the service life of the nozzle. The nozzle injects high-pressure water flow into the riverbed surface, and through the disturbing action of the water flow, the sediment deposited on the riverbed surface is suspended. The suspended sediment is then sucked into the pump body and transported to the designated discharge area through the conveying pipeline.
[0136] For the shaping process, it includes cutoff meander and bifurcation. Cutoff meander is an engineering measure to truncate the winding river course by artificial or natural means, shorten the river course length, and make the water flow tend to be straight. Its core principle is to utilize the scouring force of the water flow to widen the new river course and reduce the bend resistance; bifurcation refers to the phenomenon that the river forms multiple branches due to sediment deposition and water flow bifurcation.
[0137] Optionally, cutoff meander is carried out for the bend with high siltation risk, and a dam body is set at the entrance of the new river course after cutoff meander. Moreover, the target suspended river is divided into the main river course and the bifurcated river course, and the water flow distribution ratio between the main river course and the bifurcated river course is determined to be one of the three water flow distribution ratios of 6:4, 7:3, and 8:2 according to the topographic condition data and hydrological data in the river course to be treated.
[0138] It should be noted that the water flow distribution ratio between the main river course and the bifurcated river course is the result of comprehensive consideration based on hydraulic principles, river course treatment experience, and ecological requirements.
[0139] Taking the water flow distribution ratio of 7:3 as an example, the determination of this ratio comprehensively considers hydraulic balance, sediment transport, and ecological requirements.
[0140] From the perspective of hydraulic balance, considering that the main channel needs to carry most of the water flow to ensure the normal functioning of its shipping, flood control, and ecological functions. The 7:3 ratio can ensure that the main channel has sufficient water volume, avoiding excessive slowdown of the water flow in the main channel due to excessive diversion, which may cause sediment deposition; the 30% water flow diverted to the braided channels can effectively relieve the pressure on the main channel while preventing excessive erosion of the braided channels due to excessive flow.
[0141] From the perspective of sediment transportation, the main channel needs to maintain a relatively high flow velocity to maintain sediment transport capacity and prevent sedimentation. The 7:3 ratio can ensure that the flow velocity in the main channel is appropriate, neither causing sediment deposition due to too low flow nor exacerbating erosion due to too high flow. The 30% flow in the braided channels can play a role in assisting sediment transport while preventing sedimentation in the braided channels due to too low flow.
[0142] From the perspective of ecological needs, the main channel needs to maintain a relatively high water volume to support the stability of aquatic habitats and ecosystems; the 30% flow in the braided channels can provide sufficient water sources for the riparian vegetation, while forming diverse habitats to promote ecological restoration.
[0143] In addition, the water flow distribution ratio can be adjusted according to specific circumstances, taking into account river channel functions, topographic conditions, and hydrological conditions.
[0144] Considering from the aspect of river channel functions: If the main channel needs to undertake more shipping or flood control tasks, the distribution ratio of the main channel can be appropriately increased, and the water flow distribution ratio of the main channel and the braided channels can be set at 8:2.
[0145] If the braided channels need to undertake more ecological restoration or landscape functions, the distribution ratio of the braided channels can be appropriately increased, and the water flow distribution ratio of the main channel and the braided channels can be set at 6:4. Considering from the aspect of topographic conditions: If the terrain of the braided channels is lower and natural diversion is likely to occur, the ratio of the braided channels can be appropriately increased; if the terrain of the main channel is higher and more water flow is needed to maintain the river channel functions, the ratio of the main channel can be increased.
[0146] Considering from the aspect of hydrological condition data:
[0147] During the flood season, the ratio of the braided channels can be appropriately increased to relieve the flood control pressure on the main channel; during the dry season, the ratio of the braided channels can be appropriately reduced to ensure sufficient water volume in the main channel.
[0148] Considering from the aspect of ecological needs: If the ecological environment of the braided channels needs to be repaired with emphasis, the ratio of the braided channels can be appropriately increased; if the ecological system of the main channel needs to be protected, the ratio of the main channel can be appropriately increased.
[0149] The setting of the water flow distribution ratio between the main river channel and the bifurcated river channels can optimize the ecological environment while ensuring the smoothness of the main waterway, promoting the health and sustainable development of the river.
[0150] In summary, the dredging and sediment removal process provided by this application uses multi-dimensional dredging sensing equipment to monitor key evidence such as water depth, flow velocity, and sediment concentration in real time, and uses machine learning and big data analysis algorithms to realize the automatic planning and optimization of the dredging path. In addition, through the wireless network module, data sharing and shore-end remote operation can be achieved, supporting manual / automatic operation modes at the ship end and the shore end. The jet stirring device is used to treat silt and silt loam, and the cutter head is used to treat cohesive soil. When bifurcating the meandering river, the water flow distribution ratio between the main river channel and the bifurcated channels suitable for the meandering river is determined, and water-tolerant plants are planted along the bifurcated channels. The width of the bifurcated river channels is 50 - 100 meters, which can reduce sediment deposition, expand the restoration of wetland areas, improve the navigability of the river channels, drive the development of coastal logistics, reduce flood losses, and save treatment costs.
[0151] Optionally, the method for determining the meandering river treatment plan provided by this application also includes an ecological restoration part.
[0152] Specifically, taking the water flow distribution ratio of 7:3 between the main river channel and the bifurcated river channels as an example, the width of the bifurcated river channels is generally 50 - 100 meters, and water-tolerant plants are planted on both sides of the bifurcated river channels to form an ecological buffer zone, and the ecological buffer zone includes reeds and cattails.
[0153] Next, the dam body set at the entrance of the new river channel is introduced.
[0154] The method for determining the meandering river treatment plan provided by this application also includes the regulation of the dam body.
[0155] Specifically, the dam bodies of the target meandering river include sediment retention dams and control dams.
[0156] The sediment retention dam is a dam body composed of loess and wood fibers obtained by modular construction combined with 3D printing technology. Among them, the particle size of the loess is 0.05 - 2 mm, and the compressive strength of the compacted loess can reach or exceed 2.5 MPa. When constructing the sediment retention dam, a 3D printing modular construction process is adopted, with a thickness of 0.5 meters for each layer and layer-by-layer compaction.
[0157] Specifically, the process of constructing using 3D printing technology includes:
[0158] Design the specific location, size, and shape of the check dam in detail, and prepare the corresponding 3D printing materials, which are mainly a mixture of loess and wood fibers. Then, transport the 3D printing equipment to the construction site and install and debug it. Ensure that the working area of the printer covers the entire construction range of the check dam, calibrate the thickness of each layer, and print the check dam layer by layer according to the pre-set design model. After each layer of printing is completed, use a special compaction device to compact the layer.
[0159] An automatic control valve is installed at the bottom of the check dam, which, combined with sediment discharge during the flood period, effectively reduces the sediment transport volume downstream.
[0160] The control dam is a dam body composed of steel bars and concrete. It adopts a multi-functional gate, including flood discharge, sediment discharge, and ecological flow regulation, etc.
[0161] In summary, setting a dam body at the entrance of the new river course after cut-off can effectively prevent the phenomenon of siltation. Moreover, the addition of wood fibers can enhance the tensile performance of the dam body, extend the service life of the dam body, adopt the layer-by-layer compaction process, reduce the sediment transport volume downstream, improve the stability of the riverbed, enhance the sense of security of the residents along the bank, and promote the coordinated development of the regional economy and ecology.
[0162] Step 106: Input the on-site data obtained from the on-site data acquisition system into the digital twin system through the data transmission network to obtain the on-site monitoring results and on-site governance prediction results of the target hanging river.
[0163] Optionally, establish a data transmission network, and input the on-site data collected by the on-site data acquisition system into the digital twin system through this data transmission network to obtain the on-site monitoring results and governance prediction results of the target hanging river.
[0164] In the prior art, discrete sensors and manual monitoring are usually adopted. However, the data acquisition frequency is low and the coverage range is limited, making it difficult to achieve comprehensive and real-time monitoring. While the digital twin system adopted in this application can realize real-time monitoring and long-term prediction of the treatment effect of the hanging river.
[0165] Specifically, the digital twin system integrates a variety of sensors (such as water level sensors, flow velocity sensors, sediment monitoring devices, etc.) through the Internet of Things (IoT) technology to achieve all-weather and full-coverage data acquisition. The data is transmitted to the digital twin platform in real time, dynamically updating the model state to ensure that the system always reflects the latest situation of the river course.
[0166] It should be noted that for the digital twin system provided in this application, its model construction includes data input and model functions. In terms of data input, it can monitor data in real time. The data monitored in real time specifically includes riverbed topography, hydrology, sediment distribution, etc. In terms of model functions, it can predict the changing trend of the riverbed and simulate the effects of different treatment schemes. In terms of function expansion, it can combine unmanned aerial vehicle (UAV) remote sensing technology to regularly update the three-dimensional model of the river channel. Moreover, this system can also provide a visualization interface to support decision-makers in quickly selecting treatment schemes.
[0167] Thus, it can be seen that the digital twin system can integrate multi-source data (such as remote sensing data, meteorological data, terrain data, etc.), break data islands, and achieve comprehensive and multi-dimensional analysis. Through visualization technology, it intuitively presents the treatment effects, facilitating decision-makers to quickly understand and respond. At the same time, the digital twin system supports real-time monitoring of treatment effects, promptly discovers abnormal situations (such as local siltation, abnormal flow velocity, etc.), and dynamically adjusts treatment schemes.
[0168] In summary, for the method for determining the treatment scheme of the suspended river provided in this application, geographical data of the target suspended river is obtained, and after analyzing this geographical data, the hydrological data of the target suspended river and the information of the river channel to be treated are obtained. The geographical data, hydrological data, and the information of the river channel to be treated are respectively input into a geographical information system platform and a computational fluid dynamics tool to obtain the three-dimensional geometric model of the target suspended river and the simulation results of straightening the meandering section with high siltation risk of the target suspended river. The three-dimensional geometric model and the simulation results are input into the digital twin system to obtain the prediction results of the suspended river treatment. The target suspended river is treated using the cut-off and straightening scheme that meets the expected treatment effect in the prediction results, and the on-site data is input into the digital twin system for on-site monitoring. In this application, the digital twin system is used to first predict the treatment results of each suspended river treatment scheme, and then select the best treatment scheme for implementation, improving the efficiency of the suspended river treatment.
[0169] It should be noted that for the suspended river treatment method involved in this application, in terms of comprehensive benefits, it can at least reduce sediment siltation by 200 million tons per year and restore wetland area up to 1,000 hectares. In terms of economic benefits, it improves the navigability of the river channel, drives the development of coastal logistics, reduces flood losses, and saves treatment costs. In terms of social benefits, it enhances the sense of security of coastal residents and promotes the coordinated development of regional economy and ecology.
[0170] Optionally, an intelligent early warning system can also be set up in this application. The system includes an early warning mechanism, and the early warning mechanism includes threshold setting and data integration. In terms of threshold setting, it automatically alarms when the water level exceeds the warning line by 50 cm. In terms of data integration, it combines sediment concentration and flow velocity to evaluate potential risks.
[0171] The method for determining the suspended river treatment plan provided by the present application is introduced above. The device for executing the method for determining the suspended river treatment plan will be introduced below.
[0172] See Figure 2 , the structural schematic diagram of the device for determining the suspended river treatment plan provided by the present application. As Figure 2 shown, the device includes:
[0173] An acquisition unit 10, a geometric model construction unit 20, a simulation unit 30, a digital twin unit 40, a suspended river treatment unit 50, and a prediction unit 60; where:
[0174] The acquisition unit 10 is configured to acquire the geographical data of the target suspended river, analyze the geographical data to obtain the hydrological data of the target suspended river and the information of the river section to be treated of the target suspended river; the information of the river section to be treated includes the information of the high-sedimentation-risk bend.
[0175] The geometric model construction unit 20 is configured to input the geographical data, hydrological data, and the information of the river section to be treated into a geographic information system platform to obtain a three-dimensional geometric model of the target suspended river.
[0176] The simulation unit 30 is configured to input the geographical data, hydrological data, and the information of the river section to be treated into a computational fluid dynamics tool to simulate the process of straightening the high-sedimentation-risk bend and obtain a simulation result.
[0177] The digital twin unit 40 is configured to input the three-dimensional geometric model and the simulation result into a digital twin system to obtain a treatment prediction result of the target suspended river.
[0178] The suspended river treatment unit 50 is configured to dredge and shape the target suspended river by using a cut-off and diversion scheme that meets the expected treatment effect.
[0179] The prediction unit 60 is configured to input the on-site data acquired from an on-site data acquisition system into the digital twin system through a data transmission network to obtain an on-site monitoring result of the target suspended river.
[0180] In an embodiment, the shaping in the suspended river treatment unit 50 includes cut-off and bifurcation. The suspended river treatment unit 50 is specifically configured to:
[0181] Cut off the high-sedimentation-risk bend and set a dam at the entrance of the new river section after cut-off;
[0182] Divide the target suspended river into a main river section and a bifurcated river section, and the water flow distribution ratio between the main river section and the bifurcated river section is one of the three water flow distribution ratios of 6:4, 7:3, and 8:2 determined according to the river function, ecological requirements, terrain condition data, and hydrological data in the information of the river section to be treated.
[0183] In one embodiment, the simulation unit 30 is specifically configured to:
[0184] Set initial conditions and initial boundaries based on geographical data, hydrological data, and high-siltation-risk bends;
[0185] Straighten the high-siltation-risk bends based on the initial conditions and initial boundaries to obtain simulation results; the simulation results include the influence results of the straightening on the water flow velocity and sediment transport in the high-siltation-risk bends.
[0186] In one embodiment, the levee governance unit 50 is specifically configured to:
[0187] Use a jet stirring device to treat the silt and silt loam in the target levee, and use a cutter device to treat the cohesive soil in the target levee.
[0188] In one embodiment, the device for determining the levee governance plan further includes an ecological restoration unit, which is specifically configured to:
[0189] Plant water-tolerant plants on both sides of the braided river to form an ecological buffer zone, and the ecological buffer zone includes reeds and cattails.
[0190] In one embodiment, the device for determining the levee governance plan further includes a dam body regulation unit, which is specifically configured to:
[0191] The dam body of the target levee includes a check dam and a control dam;
[0192] The check dam is a dam body made of loess and wood fibers obtained by modular construction combined with 3D printing technology;
[0193] The control dam is a dam body composed of steel bars and concrete.
[0194] In the embodiments of the present application, a device for determining a levee governance plan is further provided. Refer to Figure 3 As shown, it shows a schematic structural diagram of a device for determining a levee governance plan provided by the present application. The device for determining a levee governance plan in the embodiments of the present application may include, but is not limited to, fixed terminals such as mobile phones, laptop computers, PDAs (Personal Digital Assistants), PADs (Tablet Computers), desktop computers, and the like. Figure 3 The shown device for determining a levee governance plan is only an example, and should not impose any limitations on the functions and usage scope of the embodiments of the present application.
[0195] As Figure 3As shown, the device for determining the levee treatment plan may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 601, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 602 or the program loaded from the storage device 608 into the random access memory (RAM) 603. When the device for determining the levee treatment plan is powered on, various programs and data required for the operation of the device for determining the levee treatment plan are also stored in the RAM 603. The processing device 601, the ROM 602, and the RAM 603 are connected to each other through a bus 604. The input / output (I / O) interface 605 is also connected to the bus 604.
[0196] Generally, the following devices may be connected to the I / O interface 605: an input device 606 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 607 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 608 including, for example, a memory card, a hard disk, etc.; and a communication device 609. The communication device 609 can allow the device for determining the levee treatment plan to communicate with other devices wirelessly or wiredly to exchange data. Although Figure 3 a device for determining the levee treatment plan with various devices is shown, it should be understood that it is not required to implement or have all the shown devices. More or fewer devices can be alternatively implemented or had.
[0197] In an embodiment of the present application, there is also provided a computer program product including computer-readable instructions, which when running on an electronic device, cause the electronic device to implement any of the methods for determining the levee treatment plan provided in the embodiments of the present application.
[0198] In an embodiment of the present application, there is also provided a computer storage medium, which carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, can cause the electronic device to implement any of the methods for determining the levee treatment plan provided in the embodiments of the present application.
[0199] In addition, it should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the device embodiments provided in the present application, the connection relationships between the modules indicate that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines.
[0200] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general hardware. Of course, it can also be implemented by dedicated hardware including application-specific integrated circuits, dedicated CPUs, dedicated memories, dedicated components, etc. Generally, functions accomplished by computer programs can be easily implemented by corresponding hardware, and the specific hardware structures for implementing the same function can also be diverse, such as analog circuits, digital circuits, or dedicated circuits. However, for the present application, in more cases, software program implementation is a better embodiment. Based on such understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk, or optical disc, etc., and includes several instructions to enable a computer device (which can be a personal computer, training device, or network device, etc.) to execute the methods described in various embodiments of the present application.
[0201] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product.
[0202] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center in a wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that a computer can store, or a data storage device such as a training device or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid-state drive (SSD)).
Claims
1. A method for determining a governance plan for a hanging river, characterized in that, Including: Obtain the geographical data of the target meandering river, and analyze the geographical data to obtain the hydrological data of the target meandering river and the information of the river section to be treated of the target meandering river; The information of the river section to be treated includes the information of bends with high sedimentation risk; Input the geographical data, the hydrological data and the information of the river section to be treated into a geographic information system platform to obtain a three-dimensional geometric model of the target meandering river; Input the geographical data, the hydrological data and the information of the river section to be treated into a computational fluid dynamics tool to simulate the process of straightening the bend with high sedimentation risk, and obtain a simulation result; Input the three-dimensional geometric model and the simulation result into a digital twin system to obtain a governance prediction result of the target meandering river; Adopt a cut-off and bifurcation plan that meets the expected governance effect to dredge and shape the target meandering river; Input the on-site data obtained from the on-site data acquisition system into the digital twin system through a data transmission network to obtain the on-site monitoring result of the target meandering river.
2. The method for determining the scheme for harnessing the hanging river according to claim 1, characterized in that, The shaping includes cut-off and bifurcation. The process of shaping the target meandering river includes: Cut off the bend with high sedimentation risk, and set a dam at the entrance of the new river channel after cut-off; Divide the target meandering river into a main river channel and a bifurcated river channel. The water flow distribution ratio between the main river channel and the bifurcated river channel is one of the three water flow distribution ratios of 6:4, 7:3 and 8:2 determined according to the river channel function, ecological demand, terrain condition data in the information of the river section to be treated and the hydrological data.
3. The method for determining the scheme for harnessing the hanging river according to claim 1, characterized in that, Input the geographical data, the hydrological data and the information of the river section to be treated into a computational fluid dynamics tool to simulate the process of straightening the bend with high sedimentation risk, and obtain a simulation result, including: Set initial conditions and initial boundaries according to the geographical data, the hydrological data and the bend with high sedimentation risk; Based on the initial conditions and initial boundaries, straighten the bend with high sedimentation risk to obtain the simulation result; the simulation result includes the influence result of the cut-off on the water flow velocity and the influence result of sediment transport of the bend with high sedimentation risk.
4. The method for determining the scheme for harnessing the hanging river according to claim 1, characterized in that, The process of dredging the target meandering river includes: Use a jet mixing device to treat the silt and silt loam in the target meandering river, and use a cutter device to treat the cohesive soil in the target meandering river.
5. The method for determining the scheme for harnessing the hanging river according to claim 2, wherein, It also includes ecological restoration; Plant water-tolerant plants on both sides of the bifurcated river channel to form an ecological buffer zone, and the ecological buffer zone includes reed and cattail.
6. The method for determining the scheme for harnessing the hanging river according to claim 1, characterized in that, It also includes dam body regulation; The dam bodies of the target meandering river include sediment retention dams and control dams; The sediment retention dam is a dam body made of loess and wood fibers obtained by modular construction combined with 3D printing technology; The control dam is a dam body composed of steel bars and concrete.
7. An apparatus for determining a scheme for harnessing a hanging river, characterized in that, Including: An acquisition unit for acquiring the geographical data of the target meandering river, and analyzing the geographical data to obtain the hydrological data of the target meandering river and the information of the river section to be treated of the target meandering river; the information of the river section to be treated includes the information of bends with high sedimentation risk; A geometric model construction unit for inputting the geographical data, the hydrological data, and the information of the river course to be treated into a geographic information system platform to obtain a three-dimensional geometric model of the target hanging river; A simulation unit for inputting the geographical data, the hydrological data, and the information of the river course to be treated into a computational fluid dynamics tool to simulate the process of straightening the meandering bend with high siltation risk and obtain a simulation result; A digital twin unit for inputting the three-dimensional geometric model and the simulation result into a digital twin system to obtain a governance prediction result of the target hanging river; A hanging river treatment unit for dredging and shaping the target hanging river by adopting a cut-off and straightening scheme that meets the expected treatment effect; A prediction unit for inputting the on-site data obtained from the on-site data acquisition system into the digital twin system through a data transmission network to obtain an on-site monitoring result of the target hanging river.
8. An equipment for determining a scheme for harnessing a hanging river, characterized in that, Comprising at least one processor and a memory connected to the processor, wherein: The memory is used for storing a computer program; The processor is used for executing the computer program so that the device for determining the hanging river treatment scheme can implement the method for determining the hanging river treatment scheme according to any one of claims 1 to 6.
9. A computer program product, characterized in that, Comprising computer-readable instructions, when the computer-readable instructions run on an electronic device, enabling the electronic device to implement the method for determining the hanging river treatment scheme according to any one of claims 1 to 6.
10. A computer storage medium, characterized in that, The storage medium carries one or more computer programs, when the one or more computer programs are executed by an electronic device, enabling the electronic device to implement the method for determining the hanging river treatment scheme according to any one of claims 1 to 6.