A lake and reservoir ecological dredging method, system, device and storage medium

Abstract

The present invention discloses an ecological dredging method, system, device and storage medium for lakes and reservoirs. The method comprises: obtaining water quality information of lakes and reservoirs to be dredged, and constructing an ecological model of the lakes and reservoirs based on the water quality information; the ecological model is used to simulate the pollutant release law of the lakes and reservoirs to be dredged; partitioning the lakes and reservoirs according to the periodic dredging capacity, and determining the water quality change law of each partition at the water intake after dredging through the ecological model; marking the partitions as non-dredging points or dredging points according to the water quality change law; processing the marking results and the water quality change law through the optimal solution model to determine the optimal path for dredging the lakes and reservoirs. The embodiment of the present application can determine the optimal path for dredging lakes and reservoirs, improve the dredging efficiency, reduce the complexity of the dredging process, and reduce the impact of the dredging process on the water quality of the water intake. The method can be widely used in the field of water quality monitoring technology.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring, and in particular to an ecological dredging method, system, device and storage medium for lakes and reservoirs. Background Art

[0002] In the related art, too much dredging of lakes and reservoirs is done by draining the reservoir capacity during the dry season; or when the water level is low during the dry season, dredging is done on the water by using dredging boats. However, the former is not applicable to reservoirs with water supply and irrigation functions, while the latter is usually unable to quantitatively consider the impact of water disturbance on the water quality of the lake and reservoir water intake during the dredging process. For dredging of lakes and reservoirs with water quality requirements, the water intake location is generally temporarily restricted or changed. When the dredging is completed and the water quality is stable, the water is moved back to the original water intake. The operation is complicated and the water quality of the water intake cannot be guaranteed. Summary of the invention

[0003] The purpose of the present invention is to solve one of the technical problems existing in the prior art to at least a certain extent.

[0004] To this end, the object of the present invention is to provide an efficient ecological dredging method, system, device and storage medium for lakes and reservoirs.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the embodiments of the present invention include:

[0006] On the one hand, an embodiment of the present invention provides a method for ecological dredging of lakes and reservoirs, comprising the following steps:

[0007] The ecological dredging method of the lake and reservoir of the embodiment of the present invention comprises: obtaining water quality information of the lake and reservoir to be dredged, and constructing an ecological model of the lake and reservoir according to the water quality information; the water quality information includes topography, hydrology, and hydrological information, and the ecological model is used to simulate the pollutant release law of the lake and reservoir to be dredged; the lake and reservoir are divided into zones according to the periodic dredging capacity, and the water quality change law of each zone after dredging is determined through the ecological model; according to the water quality change law, the zone is marked as a non-dredging point or a dredging point; the marking result and the water quality change law are processed by the optimal solution model to determine the optimal path for dredging the lake and reservoir. The embodiment of the present application provides real-time feedback on the water quality of the water intake by constructing an ecological model; and determines the optimal path for dredging the lake and reservoir through the optimal solution model. The embodiment of the present application can determine the optimal path for dredging the lake and reservoir, improve the dredging efficiency, reduce the complexity of the dredging process, and reduce the impact of the dredging process on the water quality of the water intake.

[0008] In addition, the ecological dredging method for lakes and reservoirs according to the above embodiment of the present invention may also have the following additional technical features:

[0009] Furthermore, in the ecological dredging method for lakes and reservoirs of the embodiment of the present invention, the marking results and the water quality change law are processed by an optimal solution model to determine the optimal path for dredging the lakes and reservoirs, including:

[0010] According to the water quality change law, determining the constraint condition is that the water quality of the water intake is less than or equal to the preset water quality;

[0011] The optimization goal is to connect all desilting points with the shortest cumulative distance;

[0012] Determine the decision variable as the water quality change law, and determine the first optimal path of connecting all the desilting points in series through the first optimal solution model;

[0013] If the sum of the water quality changes corresponding to each desilting point under the first optimal path is less than or equal to the preset water quality, the optimal path for desilting the lake is determined to be the first optimal path.

[0014] Furthermore, in one embodiment of the present invention, the marking results and the water quality change law are processed by an optimal solution model to determine the optimal path for desilting the lake, including:

[0015] According to the water quality variation law, determining the optimization target as the optimal water quality of the water intake;

[0016] The constraint condition is determined to be that all desilting points are connected and the cumulative distance is less than or equal to the preset distance;

[0017] Determine the decision variable as the water quality change law, and determine the second optimal path with the least impact on the water quality of the water intake through processing with the second optimal solution model;

[0018] If the sum of water quality changes corresponding to each desilting point under the second optimal path is less than or equal to the preset water quality, and the cumulative distance is less than or equal to the preset distance, the optimal path for desilting the lake is determined to be the second optimal path.

[0019] Furthermore, in one embodiment of the present invention, the method further comprises:

[0020] If the water quality requirement of the water intake cannot be met, the partition of the lake is adjusted, and the partition is marked as a non-dredging point or a desilting point according to the water quality change law;

[0021] Alternatively, if the water quality requirements of the water intake cannot be met, preventive and control operations are added during the dredging process.

[0022] Furthermore, in one embodiment of the present invention, constructing an ecological model of a lake or reservoir according to the water quality information includes:

[0023] If the water depth of the lake is greater than or equal to the preset water depth, a three-dimensional ecological model of the lake is constructed; alternatively, a two-dimensional ecological model of the lake is constructed; the three-dimensional ecological model is used to characterize the coupling relationship between hydrodynamics, water temperature and water ecology, and the two-dimensional ecological model is used to characterize the coupling relationship between hydrodynamics and water quality.

[0024] Furthermore, in one embodiment of the present invention, the method further comprises:

[0025] Calibrate and verify the ecological model according to the water quality information;

[0026] If the verification result is inconsistent with the actual situation, the ecological model is optimized.

[0027] Further, in one embodiment of the present invention, marking the partition as a non-desilting point or a desilting point includes:

[0028] If the water quality of the water intake is greater than or equal to the preset water quality after the current partition is desilted at any time, the current partition will be marked as a non-desilting point;

[0029] Alternatively, mark the current partition as the desilting point.

[0030] On the other hand, an embodiment of the present invention provides an ecological dredging system for lakes and reservoirs, comprising:

[0031] The first module is used to obtain water quality information of the lake to be desilted and to construct an ecological model of the lake based on the water quality information; the water quality information includes topography, hydrology, and hydrological information, and the ecological model is used to simulate the pollutant release law of the lake to be desilted;

[0032] The second module is used to divide the lake into zones according to the periodic desilting capacity, and determine the water quality change law of the water intake of each zone after desilting through the ecological model;

[0033] The third module is used to mark the partition as a non-desilting point or a desilting point according to the water quality change law;

[0034] The fourth module is used to process the marking results and the water quality change law through the optimal solution model to determine the optimal path for dredging the lake.

[0035] On the other hand, an embodiment of the present invention provides an ecological dredging device for a lake or reservoir, comprising:

[0036] at least one processor;

[0037] at least one memory for storing at least one program;

[0038] When the at least one program is executed by the at least one processor, the at least one processor implements the above-mentioned ecological dredging method for lakes and reservoirs.

[0039] On the other hand, an embodiment of the present invention provides a storage medium, in which a program executable by a processor is stored. When the program executable by the processor is executed by the processor, it is used to implement the above-mentioned ecological dredging method for lakes and reservoirs.

[0040] The method provided by the embodiment of the present invention includes: obtaining water quality information of the lake to be desilted, and constructing an ecological model of the lake based on the water quality information; the water quality information includes topography, hydrology, and hydrological information, and the ecological model is used to simulate the pollutant release law of the lake to be desilted; the lake is divided into zones according to the periodic desilting capacity, and the water quality change law of each zone after desilting is determined through the ecological model; the zone is marked as a non-desilting point or a desilting point according to the water quality change law; the marking result and the water quality change law are processed by the optimal solution model to determine the optimal path for desilting the lake. The embodiment of the present application provides real-time feedback on the water quality of the water intake by constructing an ecological model; and determines the optimal path for desilting the lake through the optimal solution model. The embodiment of the present application can determine the optimal path for desilting the lake, improve the desilting efficiency, reduce the complexity of the desilting process, and reduce the impact of the desilting process on the water quality of the water intake. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the embodiments of the present invention or the drawings of related technical solutions in the prior art are introduced below. It should be understood that the drawings introduced below are only for the convenience of clearly describing some embodiments of the technical solutions of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 A schematic diagram of a flow chart of an embodiment of the ecological dredging method for lakes and reservoirs provided by the present invention;

[0043] Figure 2 A schematic diagram of a flow chart of another embodiment of the ecological dredging method for lakes and reservoirs provided by the present invention;

[0044] Figure 3 A schematic diagram of the marking results of an embodiment of the partition marking provided by the present invention;

[0045] Figure 4 A schematic structural diagram of an embodiment of an ecological dredging system for lakes and reservoirs provided by the present invention;

[0046] Figure 5A schematic structural diagram of an embodiment of an ecological dredging device for lakes and reservoirs provided by the present invention. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limitations of the present invention. For the step numbers in the following embodiments, they are only provided for the convenience of explanation, and the order between the steps is not limited in any way, and the execution order of each step in the embodiment can be adaptively adjusted according to the understanding of those skilled in the art.

[0048] Almost all reservoirs in the world are facing the problem of siltation. According to estimates, a reservoir in a certain place has lost a total storage capacity of about 4.8 billion m due to siltation. 3 , the siltation rate is 11%, which is one-third of the domestic water use. The reduction in the functionality, safety and comprehensive benefits of reservoirs caused by siltation has become a technical problem that needs to be solved urgently. Different from river dredging, lake and reservoir dredging also faces problems such as poor hydrodynamic conditions and deep water. In recent years, with the continuous development of dredging methods and technologies, lake and reservoir dredging has become more feasible. However, for lakes and reservoirs with water quality requirements (such as reservoirs with water supply functions), there is still a lack of a systematic ecological dredging method to achieve lake and reservoir dredging while ensuring the water quality of the water intake.

[0049] Current technology has not yet solved the problem of ecological dredging of lakes and reservoirs with water quality requirements. Too many existing lake and reservoir dredging operations are carried out by draining the reservoir capacity during the dry season; or when the water level is low during the dry season, dredging operations are carried out on the water by dredging ships. The former cannot be applied to reservoirs with water supply and irrigation functions, and the latter usually cannot quantitatively consider the impact of water disturbance on the water quality of the lake and reservoir water intake during the dredging process. In actual practice, for the dredging of lakes and reservoirs with water quality requirements, the water intake location is generally temporarily restricted or changed. When the dredging is completed and the water quality is stable, the water is moved back to the original water intake. A few will use numerical models to simulate and study several comparison schemes, and then determine a recommended scheme, but the optimality of the scheme cannot be guaranteed. For this reason, this application combines numerical simulation and optimization models to transform the dredging of lakes and reservoirs with water quality requirements into an optimization problem for solution, and then obtain the optimal dredging scheme under the premise of ensuring the water quality of the lake and reservoir water intake.

[0050] The ecological dredging method and system of lakes and reservoirs proposed in an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. First, the ecological dredging method of lakes and reservoirs proposed in an embodiment of the present invention will be described with reference to the accompanying drawings.

[0051] Reference Figure 1In an embodiment of the present invention, a method for ecological dredging of lakes and reservoirs is provided. The method for ecological dredging of lakes and reservoirs in the embodiment of the present invention can be applied to a terminal, a server, or software running in a terminal or a server. The terminal can be a tablet computer, a laptop computer, a desktop computer, etc., but is not limited thereto. The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. The method for ecological dredging of lakes and reservoirs in the embodiment of the present invention mainly includes the following steps:

[0052] S100: Obtain water quality information of the lake or reservoir to be desilted, and construct an ecological model of the lake or reservoir based on the water quality information; the water quality information includes topography, hydrology, and hydrological information, and the ecological model is used to simulate the pollutant release law of the lake or reservoir to be desilted;

[0053] S200: The lake is divided into different zones according to the periodic desilting capacity, and the water quality change pattern of each zone at the water intake after desilting is determined through the ecological model;

[0054] S300: Mark the partition as a non-desilting point or a desilting point according to the law of water quality change;

[0055] S400: The marking results and water quality change patterns are processed through the optimal solution model to determine the optimal path for dredging the lake.

[0056] In some possible implementations, the water quality change rule in the embodiment of the present application may be the impact on the water quality of the water intake several days after desilting in a certain partition. The impact may be whether the water quality of the water intake after the change meets the requirements, or does not meet the requirements. It can be understood that the optimization problem usually includes three elements: decision variables, objective functions, and constraints. In the embodiment of the present application, the water quality of the water intake not exceeding the standard can be used as a constraint condition, and the optimization goal is to connect all "desilting points" with the shortest cumulative distance, and fi (tj) is used as a decision variable to convert the problem into an optimization problem; or all "desilting points" can be connected and the cumulative distance is less than a certain threshold as a constraint condition, and the water quality of the water intake is the best as the optimization goal, and fi (tj) is used as a decision variable to convert the problem into an optimization problem. The algorithm of the optimization model can be selected from exhaustive method, ant colony algorithm, D-star algorithm or other artificial intelligence algorithms according to actual needs.

[0057] This application proposes an ecological dredging plan that meets the water quality requirements of lakes and reservoirs. By combining numerical simulation with optimization models, a scientific dredging plan can be formulated on the premise of meeting the water quality requirements of lake and reservoir water intakes, and the shortest dredging path can be achieved to save dredging costs.

[0058] Optionally, in one embodiment of the present invention, the marking results and the water quality change law are processed by an optimal solution model to determine the optimal path for desilting the lake, including:

[0059] According to the law of water quality change, the constraint condition is determined to be that the water quality at the water intake is less than or equal to the preset water quality;

[0060] The optimization goal is to connect all desilting points with the shortest cumulative distance;

[0061] The decision variable is determined to be the law of water quality change, and the first optimal path of connecting all desilting points in series is determined through the first optimal solution model processing;

[0062] If the sum of the water quality changes corresponding to each desilting point under the first optimal path is less than or equal to the preset water quality, the optimal path for desilting the lake is determined to be the first optimal path.

[0063] Optionally, in one embodiment of the present invention, the marking results and the water quality change law are processed by an optimal solution model to determine the optimal path for desilting the lake, including:

[0064] According to the law of water quality change, the optimization target is determined to be the optimal water quality at the water intake;

[0065] The constraint condition is determined to be that all desilting points are connected and the cumulative distance is less than or equal to the preset distance;

[0066] Determine the decision variable as the law of water quality change, and determine the second optimal path with the least impact on the water quality of the water intake through the second optimal solution model;

[0067] If the sum of the water quality changes corresponding to each desilting point under the second optimal path is less than or equal to the preset water quality, and the cumulative distance is less than or equal to the preset distance, the optimal path for desilting the lake is determined to be the second optimal path.

[0068] In some possible implementations, the optimal solution model in the embodiment of the present application may include a first optimal solution model and a second optimal solution model. The first optimal path is the shortest path connecting all silt removal points in series, and the second optimal path is the optimal path when the water quality of the water intake is the optimal water quality.

[0069] Optionally, in one embodiment of the present invention, the method further comprises:

[0070] If the water quality requirements of the water intake cannot be met, adjust the zoning of the lake and reservoir, and return to mark the zone as a non-dredging point or a desilting point according to the law of water quality changes;

[0071] Alternatively, if the water quality requirements at the intake cannot be met, additional preventive operations can be performed during the dredging process.

[0072] In some possible implementations, if the water quality requirements of the water intake cannot be met, it indicates that the current dredging cannot meet the water intake requirements of the water intake, and the water supply of the water intake cannot be guaranteed while dredging. At this time, the zoning of the lake reservoir can be adjusted, and a feasible dredging path can be found again, or prevention and control operations can be increased during the dredging process. Of course, those skilled in the art can also take other feasible ways to reduce the impact on the water quality of the water intake during the dredging process.

[0073] Optionally, in one embodiment of the present invention, an ecological model of a lake or reservoir is constructed based on water quality information, including:

[0074] If the water depth of the lake is greater than or equal to the preset water depth, a three-dimensional ecological model of the lake is constructed; alternatively, a two-dimensional ecological model of the lake is constructed; the three-dimensional ecological model is used to characterize the coupling relationship between hydrodynamics, water temperature and water ecology, and the two-dimensional ecological model is used to characterize the coupling relationship between hydrodynamics and water quality.

[0075] In some possible implementations, it is understandable that for lakes and reservoirs with a water depth greater than the preset water depth, a corresponding three-dimensional hydrodynamic-water temperature-water ecology coupling model can be established if conditions permit, and this application does not make specific limitations. The three-dimensional ecological model in the embodiment of the present application can be a three-dimensional hydrodynamic-water temperature-water ecology coupling model, and the two-dimensional ecological model can be a two-dimensional hydrodynamic-water quality model. The mathematical model established in the embodiment of the present application is the best with a three-dimensional hydrodynamic-water temperature-water ecology coupling model, and at least a two-dimensional hydrodynamic-water quality model is required. Among them, hydrodynamics is the basis of the model. For lakes and reservoirs with larger water depths, a water temperature-water ecology model should be established simultaneously to reflect the temperature stratification changes, and then reflect the influence of temperature on the transport, diffusion and degradation of pollutants during ecological dredging; the parameters considered in the water ecology model mainly depend on the type of pollutants studied, and it is recommended to be scientifically determined based on isotope tests or urban tests; if there are fewer influencing factors, it can be simplified to a water quality model, which can be generalized by giving explanations and diffusion coefficients.

[0076] Optionally, in one embodiment of the present invention, the method further comprises:

[0077] Calibrate and validate the ecological model based on water quality information;

[0078] If the verification result does not match the actual situation, optimize the ecological model.

[0079] Optionally, in one embodiment of the present invention, marking a partition as a non-desilting point or a desilting point includes:

[0080] If the water quality of the water intake is greater than or equal to the preset water quality after the current partition is desilted at any time, the current partition will be marked as a non-desilting point;

[0081] Alternatively, mark the current partition as the desilting point.

[0082] The dredging method provided by the present application is described in detail below with reference to a specific embodiment. Figure 2 , an example is given to illustrate the specific use of this method:

[0083] Step S21, collect and organize the hydrological, water temperature, topographic and water quality data of the lakes and reservoirs to be desilted. If necessary, synchronous observation tests should be carried out for subsequent numerical model calibration and verification.

[0084] Step S22: Use the collected lake and reservoir topography to establish a three-dimensional hydrodynamic-water temperature-water ecology model, and use the collected or synchronous observation data to calibrate and verify the established three-dimensional hydrodynamic-water temperature-water ecology model. If necessary, conduct in-situ or urban experiments to obtain the release pattern of sediment pollutants under artificial disturbance conditions such as dredging.

[0085] Step S23: Figure 3 As shown in the figure, the reservoir is divided into zones according to the daily desilting capacity, and the established mathematical model is used to analyze the change law of water quality at the water intake after desilting in each desilting zone under the most unfavorable condition, fi(tj), where fi(tj) represents the impact of the i-th zone on the water intake after desilting on the jth day.

[0086] Step S24: If a desilting zone has an impact on the water quality of the water intake exceeding a threshold on a certain day, it is marked as a non-desilting point, and the rest are marked as desilting points (such as Figure 3 The shaded part, of course, the marking form of the partition can be adjusted according to actual needs).

[0087] Step S25: Taking the water quality of the water intake not exceeding the standard as the constraint condition, connecting all "desilting points" with the shortest cumulative distance as the optimization goal, and fi(tj) as the decision variable, the problem can be transformed into an optimization problem, and the optimization model can be used to obtain the optimal solution that meets the constraints. For the specific process, see Figure 2 .

[0088] Step S26, or with the constraint condition of connecting all "desilting points" and the cumulative distance being less than a certain threshold, with the best water quality at the water intake as the optimization goal, and fi(tj) as the decision variable, the problem can be transformed into an optimization problem, and the optimization model can be used to obtain the optimal solution that meets the constraints. For the specific process, see Figure 2 .

[0089] Step S27: If the above method cannot obtain the optimal solution in each case, it means that there is no optimal solution under this background condition, and it is necessary to re-explore the optimal solution by optimizing the dredging point settings, taking preventive measures, improving the dredging conditions, etc.

[0090] The embodiments of the present application can propose the best dredging path that meets the water quality conditions of lakes and reservoirs, or the best water quality dredging plan that meets certain dredging path (construction period) requirements by combining mathematical models and optimization algorithms. The results can be widely promoted and applied to the dredging of lakes and reservoirs with water quality requirements, improving the dredging efficiency and restoring the reservoir capacity while ensuring the regional water quality.

[0091] In summary, the method adopted in the embodiment of the present application includes: obtaining water quality information of the lakes and reservoirs to be desilted, and constructing an ecological model of the lakes and reservoirs based on the water quality information; the water quality information includes topography, hydrology, and hydrological information, and the ecological model is used to simulate the pollutant release law of the lakes and reservoirs to be desilted; the lakes and reservoirs are divided into zones according to the periodic desilting capacity, and the water quality change law of each zone at the water intake after desilting is determined through the ecological model; according to the water quality change law, the zone is marked as a non-desilting point or a desilting point; the marking results and the water quality change law are processed through the optimal solution model to determine the optimal path for desilting the lakes and reservoirs. The embodiment of the present application provides real-time feedback on the water quality of the water intake by constructing an ecological model; and determines the optimal path for desilting the lakes and reservoirs through the optimal solution model. The embodiment of the present application can determine the optimal path for desilting the lakes and reservoirs, improve the desilting efficiency, reduce the complexity of the desilting process, and reduce the impact of the desilting process on the water quality of the water intake.

[0092] Secondly, refer to the attached Figure 4 An ecological dredging system for lakes and reservoirs proposed according to an embodiment of the present invention is described.

[0093] Figure 4 Schematic diagram of the structure of an ecological dredging system for a lake or reservoir according to an embodiment of the present invention. The system specifically includes:

[0094] The first module 410 is used to obtain water quality information of the lake or reservoir to be desilted, and to construct an ecological model of the lake or reservoir based on the water quality information; the water quality information includes topography, hydrology, and hydrological information, and the ecological model is used to simulate the pollutant release law of the lake or reservoir to be desilted;

[0095] The second module 420 is used to divide the lake into zones according to the periodic desilting capacity, and determine the water quality change law of the water intake of each zone after desilting through the ecological model;

[0096] The third module 430 is used to mark the partition as a non-desilting point or a desilting point according to the law of water quality change;

[0097] The fourth module 440 is used to process the marking results and the water quality change law through the optimal solution model to determine the optimal path for dredging the lake.

[0098] It can be seen that the contents of the above method embodiments are all applicable to the present system embodiments, the functions specifically implemented by the present system embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0099] Reference Figure 5 The embodiment of the present invention provides an ecological dredging device for lakes and reservoirs, comprising:

[0100] at least one processor 510;

[0101] At least one memory 520, used to store at least one program;

[0102] When at least one program is executed by at least one processor 510, the at least one processor 510 implements the ecological dredging method for lakes and reservoirs.

[0103] Similarly, the contents of the above method embodiments are all applicable to the present device embodiments. The functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0104] An embodiment of the present invention also provides a computer-readable storage medium, which stores a program executable by a processor. When the program executable by the processor is executed by the processor, it is used to execute the above-mentioned ecological dredging method for lakes and reservoirs.

[0105] Similarly, the contents of the above method embodiments are all applicable to the present storage medium embodiments. The functions specifically implemented by the present storage medium embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0106] In some selectable embodiments, the function / operation mentioned in the block diagram may not occur in the order mentioned in the operation diagram. For example, depending on the function / operation involved, the two boxes shown in succession can actually be executed substantially simultaneously or the boxes can sometimes be executed in reverse order. In addition, the embodiment presented and described in the flow chart of the present invention is provided by way of example, for the purpose of providing a more comprehensive understanding of technology. The disclosed method is not limited to the operation and logic flow presented herein. Selectable embodiments are expected, wherein the order of various operations is changed and the sub-operation of a part for which is described as a larger operation is performed independently.

[0107] In addition, although the present invention is described in the context of functional modules, it should be understood that, unless otherwise specified, one or more of the functions and / or features can be integrated into a single physical device and / or software module, or one or more functions and / or features can be implemented in a separate physical device or software module. It is also understood that a detailed discussion of the actual implementation of each module is unnecessary for understanding the present invention. More specifically, in view of the properties, functions and internal relationships of the various functional modules in the device disclosed herein, the actual implementation of the module will be understood within the conventional skills of the engineer. Therefore, those skilled in the art can implement the present invention set forth in the claims without excessive experimentation using ordinary techniques. It is also understood that the specific concepts disclosed are merely illustrative and are not intended to limit the scope of the present invention, which is determined by the full scope of the appended claims and their equivalents.

[0108] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several programs to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0109] The logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable programs for implementing the logical functions, and may be embodied in any computer-readable medium for use by a program execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch and execute a program from a program execution system, device or apparatus), or in conjunction with such program execution systems, devices or apparatuses. For purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use by a program execution system, device or apparatus, or in conjunction with such program execution systems, devices or apparatuses.

[0110] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0111] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable program execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0112] In the above description of this specification, the description with reference to the terms "one embodiment / example", "another embodiment / example" or "certain embodiments / examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0113] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

[0114] The above is a specific description of the preferred implementation of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A method for ecological dredging of lakes and reservoirs, characterized in that: The following steps are involved: Acquire water quality information of the lake or reservoir to be desilted, and construct an ecological model of the lake or reservoir based on the water quality information; the water quality information includes topography, hydrology, and hydrological information, and the ecological model is used to simulate the pollutant release law of the lake or reservoir to be desilted; The lake is divided into zones according to the periodic desilting capacity, and the water quality change pattern of the water intake of each zone after desilting is determined through the ecological model; According to the water quality change law, the partition is marked as a non-dredging point or a dredging point; The marking results and the water quality change law are processed through the optimal solution model to determine the optimal path for desilting the lake; The marking results and the water quality change law are processed by an optimal solution model to determine the optimal path for desilting the lake, including: According to the water quality change law, determining the constraint condition is that the water quality of the water intake is less than or equal to the preset water quality; The optimization goal is to connect all desilting points with the shortest cumulative distance; Determine the decision variable as the water quality change law, and determine the first optimal path of connecting all the desilting points in series through the first optimal solution model; If the sum of the water quality changes corresponding to the desilting points under the first optimal path is less than or equal to the preset water quality, determining that the optimal path for desilting the lake is the first optimal path; or, According to the water quality variation law, determining the optimization target as the optimal water quality of the water intake; The constraint condition is determined to be that all desilting points are connected and the cumulative distance is less than or equal to the preset distance; Determine the decision variable as the water quality change law, and determine the second optimal path with the least impact on the water quality of the water intake through processing with the second optimal solution model; If the sum of water quality changes corresponding to each desilting point under the second optimal path is less than or equal to the preset water quality, and the cumulative distance is less than or equal to the preset distance, the optimal path for desilting the lake is determined to be the second optimal path.

2. The ecological dredging method for lakes and reservoirs according to claim 1, characterized in that: The method further comprises: If the water quality requirement of the water intake cannot be met, the partition of the lake is adjusted, and the partition is marked as a non-dredging point or a desilting point according to the water quality change law; Alternatively, if the water quality requirements of the water intake cannot be met, preventive and control operations are added during the dredging process.

3. The ecological dredging method for lakes and reservoirs according to claim 1, characterized in that: The step of constructing an ecological model of a lake or reservoir according to the water quality information includes: If the water depth of the lake is greater than or equal to the preset water depth, a three-dimensional ecological model of the lake is constructed; alternatively, a two-dimensional ecological model of the lake is constructed; the three-dimensional ecological model is used to characterize the coupling relationship between hydrodynamics, water temperature and water ecology, and the two-dimensional ecological model is used to characterize the coupling relationship between hydrodynamics and water quality.

4. The ecological dredging method for lakes and reservoirs according to claim 1, characterized in that: The method further comprises: Calibrate and verify the ecological model according to the water quality information; If the verification result is inconsistent with the actual situation, the ecological model is optimized.

5. The ecological dredging method for lakes and reservoirs according to claim 1, characterized in that: Marking the subarea as a non-desilting point or a desilting point includes: If the water quality of the water intake is greater than or equal to the preset water quality after the current partition is desilted at any time, the current partition will be marked as a non-desilting point; Alternatively, mark the current partition as the desilting point.

6. An ecological dredging system for lakes and reservoirs, characterized in that: include: The first module is used to obtain water quality information of the lake to be desilted and to construct an ecological model of the lake based on the water quality information; the water quality information includes topography, hydrology, and hydrological information, and the ecological model is used to simulate the pollutant release law of the lake to be desilted; The second module is used to divide the lake into zones according to the periodic desilting capacity, and determine the water quality change law of the water intake of each zone after desilting through the ecological model; The third module is used to mark the partition as a non-desilting point or a desilting point according to the water quality change law; The fourth module is used to process the marking results and the water quality change law through the optimal solution model to determine the optimal path for dredging the lake; The fourth module is used to: According to the water quality change law, determining the constraint condition is that the water quality of the water intake is less than or equal to the preset water quality; The optimization goal is to connect all desilting points with the shortest cumulative distance; Determine the decision variable as the water quality change law, and determine the first optimal path of connecting all the desilting points in series through the first optimal solution model; If the sum of the water quality changes corresponding to the desilting points under the first optimal path is less than or equal to the preset water quality, determining that the optimal path for desilting the lake is the first optimal path; or, According to the water quality variation law, determining the optimization target as the optimal water quality of the water intake; The constraint condition is determined to be that all desilting points are connected and the cumulative distance is less than or equal to the preset distance; Determine the decision variable as the water quality change law, and determine the second optimal path with the least impact on the water quality of the water intake through processing with the second optimal solution model; If the sum of water quality changes corresponding to each desilting point under the second optimal path is less than or equal to the preset water quality, and the cumulative distance is less than or equal to the preset distance, the optimal path for desilting the lake is determined to be the second optimal path.

7. An ecological dredging device for lakes and reservoirs, characterized in that: include: at least one processor; at least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the ecological dredging method for lakes and reservoirs as described in any one of claims 1 to 5.

8. A computer-readable storage medium storing a program executable by a processor, characterized in that: The program executable by the processor is used to implement the ecological dredging method for lakes and reservoirs as described in any one of claims 1 to 5 when executed by the processor.

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