A flood diversion area joint dispatch flood diversion strategy management method, system and medium

Abstract

The application relates to a flood diversion strategy management method and system for joint operation of a flood diversion and storage area, and a medium. The method comprises the following steps: obtaining high spatio-temporal resolution underlying surface data of each flood diversion and storage area, and constructing a two-dimensional hydrodynamic model; simulating and calculating the flood diversion and storage process of the flood diversion and storage area; determining the flood diversion and storage duration according to the design flood storage volume of different flood diversion and storage areas; simulating a flood scene set of each flood diversion and storage area according to different frequency flood conditions; constructing a knowledge graph for the operation of the flood diversion and storage area, and determining multiple flood diversion schemes; and based on a target function and a constraint condition, a target flood diversion scheme is obtained through comparison and selection. The application is started from the perspective of joint operation of flood diversion and storage of multiple flood diversion and storage areas, meets the rapid decision-making demand of key indicators for the operation of the flood diversion and storage area, and reduces the loss caused by flood disasters.

Description

Technical Field

[0001] The present application relates to the field of flood diversion management, and in particular to a method, system and medium for managing a flood diversion strategy for joint scheduling of flood storage areas. Background Art

[0002] As a crucial component of river flood control systems, flood diversion and storage areas, when facing regional flood threats, can, through coordinated use with river channels, levees, and reservoirs, play a crucial role in reducing flood peaks, storing excess floodwater, and enhancing the basin's overall flood resilience. Furthermore, they serve as the livelihoods of residents within the region. After more than 70 years of development, my country has established a relatively comprehensive flood diversion and storage area system. However, with the increasing number of flood control projects in the basin, the increasing number of schedulable project types, and the ever-expanding scope and scale of schedulable projects, the topological relationships within these projects are becoming increasingly complex. This is particularly true when basin-wide, excessive floods occur, and the timing and sequence of their activation become crucial. This raises the bar for ensuring the safety of people within the basin, optimizing and selecting flood control scheduling schemes, and evaluating the benefits of flood control and disaster reduction. In the past, flood diversion and storage area scheduling within a river basin has mostly remained at a relatively macro level, treating them as reservoirs and using water level-reservoir capacity curves to describe their scheduling. However, this simplification completely ignores the complexities of flood diversion and storage areas and fails to provide them with detailed (spatiotemporal inundation) information to evaluate their own flood diversion strategies. Therefore, there is an urgent need to analyze the activation strategies of flood diversion and storage areas in detail and develop more scientific and reasonable flood diversion scheduling plans, which can provide important technical support for flood prevention, disaster reduction, and comprehensive emergency management. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a method, system and medium for managing flood diversion strategies for joint scheduling of flood diversion areas. Based on the construction of a two-dimensional hydrodynamic model of the flood diversion area, a knowledge graph of the use of the flood diversion area group is constructed for flood conditions of different frequencies, and corresponding flood diversion scheduling optimization solutions are given, which can provide a reference for improving the utilization efficiency of the flood diversion area group and deploying flood diversion strategies.

[0004] To achieve the above objectives, this application provides the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides a method for managing a flood diversion strategy for joint scheduling of flood diversion areas, comprising the following steps:

[0006] Step 1: Obtain high temporal and spatial resolution underlying surface data for each flood storage area and construct a two-dimensional hydrodynamic model;

[0007] Step 2: Simulate and calculate the flood distribution and discharge process in the flood storage area;

[0008] Step 3: Determine flood distribution and flood discharge duration based on the designed flood storage capacity of different flood storage areas;

[0009] Step 4: Simulate flood scenario sets for each flood storage area based on flood conditions of different frequencies;

[0010] Step 5: Construct a knowledge graph for flood diversion and storage areas and determine multiple flood diversion plans;

[0011] Step 6: Based on the objective function and constraints, select the target flood diversion plan.

[0012] The acquisition of high temporal and spatial resolution underlying surface data of each flood storage area and the construction of a two-dimensional hydrodynamic model are specifically as follows:

[0013] Step 11: Obtain high temporal and spatial resolution digital elevation DEM and land use type data for each flood diversion and storage area, assign different roughness to each land use type, and modify the DEM terrain data based on the location of the flood diversion and storage area and the measured data;

[0014] Step 12: Grid the area of ​​each flood storage area, adjust the grid quality according to the parameters of maximum grid area, minimum allowable angle, number of grids, and local maximum grid area, and perform spatial interpolation of the digital elevation DEM in the grid.

[0015] Step 13: Construct a two-dimensional hydrodynamic model and perform parameter calibration:

[0016] Continuity equation:

[0017]

[0018] Where t is time; u and v are the velocity components of the velocity vector V along the x and y directions; h is the water depth below the horizontal plane; ζ is the tide level; q is the source and sink flow,

[0019] Momentum equation:

[0020]

[0021] Where, f is the Coriolis coefficient, f = 2ωsinΦ, ω represents the Earth's rotational velocity, Φ is the local geographic latitude; g is the acceleration of gravity; ρ is the water density; ε x , ε y are the eddy viscosity coefficients of the water flow in the x and y directions, respectively. Here, they are isotropic, i.e., ε x =ε y =ε, which can be expressed as ε = kdU * , where U * is the friction flow velocity, expressed as d is the total water depth d=h+ζ; u s 、v s is the source-sink velocity; S xx 、S xy、S yx 、S yy is the wave radiation stress, also known as the residual momentum current, τ bx , τ by are the components of the bottom friction stress in the x and y directions.

[0022] The simulation calculation of flood distribution and flood discharge process in the flood storage area is as follows:

[0023] Step 21: Query the relevant flood diversion and storage area atlas data to determine the corresponding limit water levels for different flood diversion and storage areas and flood discharge gates. Based on the constructed two-dimensional hydrodynamic model of the flood diversion and storage area, set solid wall boundaries at all locations except the diversion and discharge gates. The gate width and bottom elevation are set according to the design engineering information. Comparison and correction are performed based on remote sensing interpretation data during the flood diversion process and the water volume in the flood diversion and storage area.

[0024] Step 22: simulate and calculate the flood distribution and discharge process under different frequency flood inflow conditions in each flood storage area, and count the changes in water flow conditions near important observation points in the flood storage area.

[0025] The specific duration of flood discharge and flood separation is determined according to the designed flood storage capacity of different flood storage areas:

[0026] Step 31: Query the relevant flood diversion area atlas data to determine the designed flood storage capacity. Based on the constructed two-dimensional hydrodynamic model of the flood diversion area, when the flood inflow at the diversion gate reaches the designed flood storage capacity, stop diversion and obtain the corresponding diversion duration. Among them, determine the diversion capacity V of the nth flood diversion area. p (n) size, arrange them according to the order of use of each flood diversion area, and accumulate them from sequence number 1 to sequence number n according to the order of use of the flood diversion area, and finally obtain the cumulative flood diversion volume V corresponding to the use of the nth flood diversion area P (n), the recursive formula is as follows:

[0027] V P (n) = V P (n-1)+V p (n),n>1

[0028] V P (1) = V p (1),n=1

[0029] Where V P (n) is the cumulative flood diversion capacity from the first to the nth flood diversion area, that is, the cumulative flood diversion capacity corresponding to the operation of the nth flood diversion area; V P (1) is the cumulative flood diversion volume corresponding to the operation of the first flood diversion area; V p (1) The flood diversion capacity of the first flood diversion area;

[0030] Step 32: Based on the constructed two-dimensional hydrodynamic model of the flood diversion area, each flood diversion area determines the flow changes near each main observation point during the flood diversion period, and draws a plane flow field atlas at different flood diversion periods.

[0031] The specific flood scenario set for simulating each flood storage area according to different frequency flood conditions is:

[0032] Step 41: for the flood flow conditions of different frequencies in the target river section, based on the constructed two-dimensional hydrodynamic model of the flood diversion and storage area, simulate and calculate the two-dimensional hydrodynamic change process in the flood diversion and storage area;

[0033] Step 42: Based on the flood diversion and storage area flow simulation results under different flood flow frequencies obtained in step 42, a flood diversion and storage area flooding scenario set is formed. The scenario set includes flood diversion durations at different observation points within the flood diversion and storage area inundated by the design flood level of the flood diversion and storage area.

[0034] The construction of flood diversion and storage areas uses a knowledge graph and determines multiple flood diversion schemes as follows:

[0035] Step 51: Based on the aforementioned flood diversion scenario sets under different flood frequency conditions, different flood diversion and storage plans are formulated in combination with existing scheduling rules. Under the conditions of the specific frequency design flood level, the activation timing and activation order of each flood diversion and storage area are determined;

[0036] Step 52: Based on the activation timing and activation sequence of the flood diversion and storage area groups described in step 51, a knowledge graph of the use of the flood diversion and storage area groups is constructed, including the flood magnitude, the spatial topological relationship of the flood diversion and storage area groups, and a dataset of changes in water flow conditions at major observation points in each flood diversion and storage area.

[0037] Step 53: Based on the contents of steps 51 and 52, the schemes of sequential activation or simultaneous activation of flood diversion and storage area groups are sorted out, and the response relationship between flood diversion and storage area groups under different flood diversion scheduling schemes is analyzed to form a flood diversion scheduling scheme set.

[0038] The target flood diversion scheme obtained by comparison based on the objective function and constraint conditions is specifically:

[0039] Step 61: Based on the objective function and constraints of the joint scheduling of the flood diversion and storage area group, the present invention uses the expected flood resource volume to characterize the utilization potential of the flood diversion and storage area group. The calculation formula is as follows:

[0040]

[0041] Where p i is a flood recurrence period; W ui For a flood storage area, p i The flood water volume; n is the number of flood recurrence periods, pi+1 is the ratio p i A flood recurrence period of a higher magnitude; W ui+1 For a flood storage area, p i+1 of flood water inundation;

[0042] Step 62: Based on the objective function and constraints, select a target solution from the flood diversion solution set that can effectively address the timing, duration, and safety of flood diversion, achieve flood diversion, and thus meet the target needs of the flood control and rescue departments.

[0043] In a second aspect, an embodiment of the present application provides a flood diversion and storage area joint scheduling flood diversion strategy management system, comprising:

[0044] Model building module, used to obtain high-temporal and spatial resolution underlying surface data of each flood storage area and construct a two-dimensional hydrodynamic model;

[0045] The simulation calculation module is used to simulate the flood distribution and discharge process in the flood storage area;

[0046] Duration determination module, used to determine flood distribution and flood discharge duration according to the designed flood storage capacity of different flood storage areas;

[0047] Flood scenario simulation module, used to simulate flood scenarios for each flood storage area based on flood conditions of different frequencies;

[0048] A flood diversion scheme construction module is used to construct a knowledge graph of flood diversion and storage area applications and determine multiple flood diversion schemes;

[0049] The comparison module is used to compare and select the target flood diversion plan based on the objective function and constraints.

[0050] In a third aspect, an embodiment of the present application provides a computer-readable storage medium storing program code, which, when executed by a processor, implements the steps of the method for managing the joint scheduling and flood diversion strategy of flood diversion areas as described above.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] This application builds a two-dimensional hydrodynamic model of flood diversion and storage areas. By simulating and calculating the flow conditions of floods with varying frequencies in the study area, it presents the flood diversion process within each flood diversion and storage area, visually displaying information such as the inundation range and diversion duration. Furthermore, by integrating existing flood diversion and scheduling strategies, a detailed knowledge map of flood diversion operations within the flood diversion and storage area group under varying inflow conditions is developed, along with corresponding flood diversion and scheduling schemes that fully utilize the flood diversion capacity and efficiency of the flood diversion and storage areas. The proposed route is clear, the implementation process is straightforward, and the technical means are feasible. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0054] Figure 1 It is a flow chart of the method of the present invention.

[0055] Figure 2 It is a schematic diagram of the topological relationship of the flood diversion and storage areas of the present invention.

[0056] Figure 3 It is a knowledge application diagram of the flood diversion and scheduling scheme of the flood storage area of ​​the present invention. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0058] The terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0059] The terms "first," "second," etc. are only used to distinguish one entity or operation from another entity or operation, and are not to be understood as indicating or implying relative importance, nor are they to be understood as requiring or implying any actual relationship or order between these entities or operations.

[0060] like Figure 1 As shown, the present invention provides a method for managing flood diversion strategies for joint scheduling of flood diversion areas, which specifically includes: obtaining high-temporal and spatial resolution underlying surface data of each flood diversion area, constructing a two-dimensional hydrodynamic model, simulating and calculating the flood diversion and discharge process of the flood diversion area, determining the flood diversion and discharge duration according to the designed flood storage capacity of different flood diversion areas, simulating a set of flood scenarios for each flood diversion area according to flood conditions with different frequencies, constructing a knowledge graph for the use of flood diversion areas, and determining multiple flood diversion schemes and obtaining a target flood diversion scheme through comparison based on the objective function and constraints.

[0061] Step 1: Obtain high-temporal and spatial resolution underlying surface data for each flood storage area and construct a two-dimensional hydrodynamic model.

[0062] Step 11: Obtain high temporal and spatial resolution digital elevation DEM and land use type data for each flood diversion area, assign different roughness to each land use type, and modify the DEM terrain data based on the location of the flood diversion area and measured data.

[0063] Step 12: Grid the area of ​​each flood storage area, adjust the grid quality according to parameters such as the maximum grid area, minimum allowable angle, number of grids, and local maximum grid area, and perform spatial interpolation of the digital elevation DEM in the grid.

[0064] Step 13: Construct a two-dimensional hydrodynamic model and perform parameter calibration:

[0065] Continuity equation:

[0066]

[0067] Where t is time; u and v are the velocity components of the velocity vector V along the x and y directions; h is the water depth below the horizontal plane; ζ is the tide level; and q is the source-sink flow rate.

[0068] Momentum equation:

[0069]

[0070] Where, f is the Coriolis coefficient, f = 2ωsinΦ, ω represents the Earth's rotational velocity, Φ is the local geographic latitude; g is the acceleration of gravity; ρ is the water density; ε x , ε y are the eddy viscosity coefficients of the water flow in the x and y directions, respectively. Here, they are isotropic, i.e., ε x =ε y =ε, which can be expressed as ε = kdU * , where U * is the friction flow velocity, expressed as d is the total water depth (d = h + ζ); u s 、v s is the source-sink velocity; Sxx, Sxy, Syx, Syy are the wave radiation stresses (also known as residual momentum current). τ bx , τ by are the components of the bottom friction stress in the x and y directions.

[0071] Step 2: Simulate and calculate the flood distribution and discharge process in the flood storage area.

[0072] Step 21. Query the relevant flood diversion and storage area atlas data to determine the corresponding limited water levels for different flood diversion and storage areas and flood discharge gates. Based on the constructed two-dimensional hydrodynamic model of the flood diversion and storage area, set solid wall boundaries at all locations except the diversion and discharge gates. The gate width and bottom elevation are set according to the design engineering information, and compared and corrected based on the remote sensing interpretation data during the flood diversion process and the water volume in the flood diversion and storage area.

[0073] Step 22: Simulate and calculate the flood distribution and discharge process under different frequency flood flow conditions in each flood storage area, and count the changes in water flow conditions (water level, flow velocity) near important observation points in the flood storage area (including safety stations, flood distribution and discharge transfer roads, residential areas, power drainage stations, etc.).

[0074] Step 3: Determine the duration of flood distribution and flood discharge based on the designed flood storage capacity of different flood storage areas.

[0075] Step 31: Query the relevant flood diversion area atlas data to determine the designed flood storage capacity. Based on the constructed two-dimensional hydrodynamic model of the flood diversion area, when the flood inflow at the diversion gate reaches the designed flood storage capacity, stop diversion and obtain the corresponding diversion duration. Among them, the diversion capacity V of the nth flood diversion area is determined. p (n) size, and arrange them according to the order of use of each flood diversion area. According to the order of use of the flood diversion area, start from sequence number 1 to sequence number n and finally get the cumulative flood diversion volume V corresponding to the use of the nth flood diversion area. P (n), the recursive formula is as follows:

[0076] V P (n) = V P (n-1)+V p (n),n>1

[0077] V P (1) = V p (1),n=1

[0078] Where V P (n) is the cumulative flood diversion capacity from the first to the nth flood diversion area, that is, the cumulative flood diversion capacity corresponding to the operation of the nth flood diversion area; V P (1) is the cumulative flood diversion volume corresponding to the operation of the first flood diversion area; V p (1) The flood diversion capacity of the first flood diversion area.

[0079] Step 32: Based on the constructed two-dimensional hydrodynamic model of the flood diversion area, during the flood diversion period, each flood diversion area determines the water flow changes near the main observation points (including safety platforms, flood diversion and transfer roads, residential areas, and power drainage stations), and draws a plane flow field atlas for different flood diversion periods.

[0080] Step 4: Simulate flood scenario sets for each flood storage area based on flood conditions of different frequencies.

[0081] Step 41: for the flood flow conditions of different frequencies in the target river section, based on the constructed two-dimensional hydrodynamic model of the flood diversion and storage area, simulate and calculate the two-dimensional hydrodynamic change process in the flood diversion and storage area.

[0082] Step 42: Based on the water flow simulation results of the flood diversion area under the flood flow conditions of different frequencies obtained in step 42, a flood diversion scenario set of the flood diversion area is formed. The scenario set includes information such as the flood diversion duration at different observation points in the flood diversion area and the inundation area of ​​the flood diversion area at the design flood level.

[0083] Step 5: Construct a knowledge graph for flood diversion areas and determine multiple flood diversion plans.

[0084] Step 51: Based on the aforementioned flood diversion scenario sets of flood storage areas under different flood frequency conditions, different flood diversion and storage plans are formulated in combination with existing scheduling rules. Under the conditions of the specific frequency design flood level, the activation timing and activation order of each flood storage area are determined.

[0085] Step 52: Based on the activation timing and activation sequence of the flood diversion and storage area groups described in step 51, a knowledge graph of the use of the flood diversion and storage area groups is constructed, including flood magnitude, spatial topological relationships of the flood diversion and storage area groups, and a dataset of changes in water flow conditions at major observation points in each flood diversion and storage area.

[0086] Step 53: Based on the contents of steps 51 and 52, the schemes of sequential activation or simultaneous activation of flood diversion and storage area groups are sorted out, and the response relationship between flood diversion and storage area groups under different flood diversion scheduling schemes is analyzed to form a flood diversion scheduling scheme set.

[0087] Step 6: Based on the objective function and constraints, select the target flood diversion plan.

[0088] Step 61: Based on the objective function and constraints of the joint scheduling of the flood diversion and storage area group, the present invention uses the expected flood resource volume to characterize the utilization potential of the flood diversion and storage area group. The calculation formula is as follows:

[0089]

[0090] Where p i is a flood recurrence period, a; W ui For a flood storage area, p i The flood water volume of the flood is m3; n is the number of flood recurrence periods, p i+1 is the ratio p i The return period of floods of a higher magnitude, a; W ui+1 For a flood storage area, p i+1 The flood water volume, m3.

[0091] Step 62: Based on the above content, on the basis of the objective function and constraints, select a target solution from the flood diversion solution set that can effectively respond to the timing, duration and safety of flood diversion, realize flood diversion, and thus meet the target needs of the flood control and rescue departments.

[0092] like Figure 2 and Figure 3 As shown, the specific steps of the embodiment are as follows:

[0093] Step 1: First, obtain high-temporal-resolution digital elevation DEMs and land use data for flood diversion embankments 1# to 5#. Different roughness values ​​are assigned to each land use type. The DEM terrain data is modified based on the location of the flood diversion area and measured data. Next, mesh the area of ​​each flood diversion embankment. Mesh quality is adjusted based on parameters such as maximum grid area, minimum allowable angle, number of grid cells, and local maximum grid area. The digital elevation DEM is spatially interpolated within the meshes. Finally, a two-dimensional hydrodynamic model of each flood diversion embankment is constructed and its parameters calibrated.

[0094] Step 2: First, consult the atlas data for flood diversion and flood discharge dikes 1# to determine the corresponding limiting water levels for the diversion and discharge gates. Based on the constructed two-dimensional hydrodynamic model of the flood diversion and flood discharge area, solid wall boundaries are set at all diversion and discharge gates, with the width and bottom elevation of the gates set according to the design conditions. Calibration is performed based on remote sensing interpretation data during the flood diversion process and the water volume in the flood diversion and flood discharge area. Next, simulate the diversion and discharge processes of each flood diversion and flood discharge dike under different flood flow frequencies, and statistically analyze the changes in flow conditions (water level and flow velocity) near key observation points within the flood diversion and flood discharge area (including safety platforms, diversion and discharge transfer roads, residential areas, and power stations).

[0095] Step 3: First, consult the atlas data for flood diversion embankments 1# to 5# to determine the designed flood storage capacity. Based on the constructed two-dimensional hydrodynamic model of the flood diversion area, when the flood inflow at the diversion inlet reaches the designed flood storage capacity, flood diversion is stopped and the corresponding flood diversion duration is calculated. Next, during the simulation of flood diversion at each flood diversion embankment, the water flow changes near key observation points (including safety platforms, flood diversion and transfer roads, residential areas, and power stations) are determined, and planar flow field atlases are drawn for different flood diversion durations.

[0096] Step 4: First, based on the constructed 2D hydrodynamic model of the flood diversion area, simulate the 2D hydrodynamic changes of flood diversion dikes 1# to 5# for different flood flow frequencies in the target river section. Next, compile a set of flood diversion scenarios for the flood diversion area. This scenario set includes information such as the duration of flood diversion at different observation points within the flood diversion area and the inundation area under the design flood level of the flood diversion area.

[0097] Step 5: First, based on the established flood diversion scenario set for each flood diversion embankment, different flood diversion and storage schemes are formulated in conjunction with existing scheduling rules. Under the conditions of a specific frequency design flood level, the timing and order of activation of each flood diversion embankment are determined. Secondly, a knowledge graph for the operation of flood diversion embankments 1# to 5# is constructed, including flood magnitudes, the spatial topological relationships of flood diversion embankment groups, and a dataset of water flow condition changes at key observation points within each flood diversion embankment. Then, scenarios for sequential or simultaneous activation of each flood diversion embankment are organized, and the response relationships between flood diversion embankment groups under different flood diversion scheduling schemes are analyzed to form a set of flood diversion scheduling schemes.

[0098] Step 6: First, based on the objective function and constraints for the joint operation of each flood diversion and storage embankment, the expected flood resource volume is used to characterize the utilization potential of the flood diversion and storage area group. Second, based on the objective function and constraints, a target solution that effectively addresses the timing, duration, and safety of flood diversion is selected from the flood diversion solution set to achieve flood diversion.

[0099] The embodiment of the present application provides a flood diversion and storage area joint scheduling flood diversion strategy management system, including:

[0100] Model building module, used to obtain high-temporal and spatial resolution underlying surface data of each flood storage area and construct a two-dimensional hydrodynamic model;

[0101] The simulation calculation module is used to simulate the flood distribution and discharge process in the flood storage area;

[0102] Duration determination module, used to determine flood distribution and flood discharge duration according to the designed flood storage capacity of different flood storage areas;

[0103] Flood scenario simulation module, used to simulate flood scenarios for each flood storage area based on flood conditions of different frequencies;

[0104] A flood diversion scheme construction module is used to construct a knowledge graph of flood diversion and storage area applications and determine multiple flood diversion schemes;

[0105] The comparison module is used to compare and select the target flood diversion plan based on the objective function and constraints.

[0106] An embodiment of the present application provides a computer-readable storage medium storing program code. When the program code is executed by a processor, the steps of the flood diversion and storage area joint scheduling flood diversion strategy management method as described above are implemented.

[0107] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0108] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0109] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0110] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0111] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0112] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0113] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0114] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A flood diversion strategy management method for joint scheduling of flood diversion areas, characterized in that: The following steps are involved: Step 1: Obtain high temporal and spatial resolution underlying surface data for each flood storage area and construct a two-dimensional hydrodynamic model; Step 2: Simulate and calculate the flood distribution and discharge process in the flood storage area; Step 3: Determine flood distribution and flood discharge duration based on the designed flood storage capacity of different flood storage areas; Step 4: Simulate flood scenario sets for each flood storage area based on different frequency flood conditions; Step 5: Construct a knowledge graph for flood diversion and storage areas and determine multiple flood diversion plans; Step 6: Based on the objective function and constraints, select the target flood diversion scheme; The target flood diversion scheme obtained by comparison based on the objective function and constraint conditions is specifically: Step 61: Based on the objective function and constraints of the joint operation of the flood diversion and storage area group, the expected flood resource volume is used to characterize the utilization potential of the flood diversion and storage area group. The calculation formula is as follows: ， Where, is a flood recurrence period; Corresponding to a flood storage area of flood water inundation; is the number of flood return periods; For comparison A flood recurrence period of one magnitude higher; Corresponding to a flood storage area of flood water inundation; Step 62: Based on the objective function and the constraints, a target solution that can effectively address the timing, duration, and safety of flood diversion is selected from the flood diversion solution set to achieve flood diversion, thereby meeting the target requirements of the flood control and emergency rescue departments. The simulation calculation of flood distribution and flood discharge process in the flood storage area is as follows: Step 21: Query the relevant flood diversion and storage area atlas data to determine the corresponding limit water levels for different flood diversion and storage areas and flood discharge gates. Based on the constructed two-dimensional hydrodynamic model of the flood diversion and storage area, set solid wall boundaries at all locations except the diversion and discharge gates. The gate width and bottom elevation are set according to the design engineering information. Comparison and correction are performed based on remote sensing interpretation data during the flood diversion process and the water volume in the flood diversion and storage area. Step 22: simulate and calculate the flood distribution and discharge process of each flood storage area under different flood inflow frequencies, and calculate the changes in water flow conditions near important observation points in the flood storage area; The specific duration of flood discharge and flood relief determined according to the designed flood storage capacity of different flood storage areas is: Step 31: Query the relevant flood diversion area atlas data to determine the designed flood storage capacity. Based on the constructed two-dimensional hydrodynamic model of the flood diversion area, when the flood inflow at the diversion gate reaches the designed flood storage capacity, stop diversion and obtain the corresponding diversion duration. Among them, determine the flood diversion capacity of the nth flood diversion area. Arrange them according to the order of use of each flood diversion area, and accumulate them from sequence number 1 to sequence number n according to the order of use of the flood diversion area, and finally get the cumulative flood diversion capacity corresponding to the use of the nth flood diversion area , the recursive formula is as follows: ， Where, is the cumulative flood diversion capacity from the 1st to the nth flood diversion area, that is, the cumulative flood diversion capacity corresponding to the use of the nth flood diversion area; The corresponding cumulative flood diversion volume when the first flood diversion area is in use; is the flood diversion capacity of the first flood diversion area; Step 32: Based on the constructed two-dimensional hydrodynamic model of the flood diversion and storage area, the flow changes near each main observation point in each flood diversion and storage area during the flood diversion duration are determined, and a plane flow field atlas is drawn for different flood diversion duration stages; The specific flood scenario set for simulating each flood storage area according to different frequency flood conditions is: Step 41: for the flood flow conditions of different frequencies in the target river section, based on the constructed two-dimensional hydrodynamic model of the flood diversion and storage area, simulate and calculate the two-dimensional hydrodynamic change process in the flood diversion and storage area; Step 42: Based on the water flow simulation results of the flood diversion area under the flood flow conditions of different frequencies obtained in step 41, a flood diversion scenario set of the flood diversion area is formed. The scenario set includes the flood diversion duration of different observation points in the flood diversion area and the inundation area information of the design flood level of the flood diversion area.

2. A flood diversion strategy management method for joint scheduling of flood diversion areas according to claim 1, characterized in that: The acquisition of high temporal and spatial resolution underlying surface data of each flood storage area and the construction of a two-dimensional hydrodynamic model are specifically as follows: Step 11: Obtain high temporal and spatial resolution digital elevation DEM and land use type data for each flood diversion and storage area, assign different roughness to each land use type, and modify the DEM terrain data based on the location of the flood diversion and storage area and the measured data; Step 12: Grid the area of ​​each flood storage area, adjust the grid quality according to the parameters of maximum grid area, minimum allowable angle, number of grids, and local maximum grid area, and perform spatial interpolation of the digital elevation DEM in the grid. Step 13: Construct a two-dimensional hydrodynamic model and perform parameter calibration: Continuity equation: ， Where, For time; 、 Flow velocity vector along The velocity component in the direction; h is the water depth below the horizontal plane; is the tide level; q is the source-sink flow, Momentum equation: ， ， Where f is the Kochia coefficient, , represents the geostrophic speed, is the local geographical latitude; is the acceleration due to gravity; is the water density; They are The eddy viscosity coefficient of the water flow in the direction is isotropic here, that is, , which can be expressed as ,in is the friction flow velocity, expressed as , Full water depth ; is the source-sink flow velocity; is the wave radiation stress, also known as the residual momentum current, are the components of the bottom friction stress in the x and y directions.

3. A flood diversion strategy management method for joint scheduling of flood diversion areas according to claim 1, characterized in that: The construction of flood diversion and storage areas uses a knowledge graph and determines multiple flood diversion schemes as follows: Step 51: Based on the aforementioned flood diversion scenario sets under different flood frequency conditions, different flood diversion and storage plans are formulated in combination with existing scheduling rules. Under the conditions of the specific frequency design flood level, the activation timing and activation order of each flood diversion and storage area are determined; Step 52: Based on the activation timing and activation sequence of the flood diversion and storage area groups described in step 51, a knowledge graph of the flood diversion and storage area groups is constructed, including flood magnitude, spatial topological relationships of the flood diversion and storage area groups, and a dataset of water flow condition changes at major observation points within each flood diversion and storage area. Step 53: Based on the contents of steps 51 and 52, the sequential or simultaneous activation schemes of the flood diversion and storage area groups are sorted out, and the response relationships between the flood diversion and storage area groups under different flood diversion scheduling schemes are analyzed to form a flood diversion scheduling scheme set.

4. A flood diversion strategy management system for joint scheduling of flood diversion areas, characterized in that: include, Model building module, used to obtain high-temporal and spatial resolution underlying surface data of each flood storage area and construct a two-dimensional hydrodynamic model; The simulation calculation module is used to simulate the flood distribution and discharge process in the flood storage area; Duration determination module, used to determine flood distribution and flood discharge duration according to the designed flood storage capacity of different flood storage areas; Flood scenario simulation module, used to simulate flood scenarios for each flood storage area based on flood conditions of different frequencies; A flood diversion scheme construction module is used to construct a knowledge graph of flood diversion and storage area applications and determine multiple flood diversion schemes; The comparison module is used to compare and select the target flood diversion plan based on the objective function and constraints.

5. A computer-readable storage medium, characterized in that The computer-readable storage medium stores program codes, and when the program codes are executed by a processor, the steps of the method for managing the joint scheduling and flood diversion strategy of flood diversion and storage areas according to any one of claims 1 to 3 are implemented.

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