Joint scheduling flood diversion strategy management method and system for branch flood storage areas, and medium

Abstract

The invention relates to a branch flood storage area joint scheduling flood diversion strategy management method and system and a medium, and the method comprises the steps: obtaining high-temporal-spatial-resolution underlying surface data of each branch flood storage area, and constructing a two-dimensional hydrodynamic model; simulating and calculating flood dividing and returning processes of the flood dividing and storing areas; according to the designed flood storage volumes of the different branch flood storage areas, determining the flood division duration and the flood retreating duration; simulating a flood scene set of each branch flood storage area according to flood coming conditions of different frequencies; constructing a branch flood storage area application knowledge graph, and determining a plurality of flood diversion schemes; and based on the target function and the constraint condition, performing comparison and selection to obtain a target flood diversion scheme. According to the method, from the perspective of combined dispatching flood diversion of multiple branch flood storage areas, the rapid decision-making requirements of key indexes applied to the branch flood storage areas are met, and flood disaster loss is reduced.

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 a joint scheduling flood storage area. Background Art

[0002] As an important part of the river flood control system, the flood storage area can play an important role in reducing flood peaks, storing excess floods, and improving the overall flood resistance capacity of the basin through joint use with rivers, levees, reservoirs, etc. when the region is facing flood threats. On the other hand, it is also the home of the residents in the area. After more than 70 years of construction, my country has formed a relatively complete flood storage area system. With the increasing number of flood control projects in the basin, the increasing number of dispatchable project types, and the continuous expansion of dispatch objects and scales, the topological relationship of flood control projects has become increasingly complex. Especially when a basin-wide super-standard flood occurs, the timing and order of activation of the flood storage area group are particularly critical, which has put forward higher requirements for ensuring the safety of people's livelihood in the basin, optimizing and selecting flood control dispatching plans, and evaluating the benefits of flood control and disaster reduction. In the past, the scheduling of flood diversion and storage areas in the basin mostly remained at a relatively macroscopic generalization. The flood diversion and storage areas were regarded as reservoirs, that is, the water level-reservoir capacity curve was used to describe the scheduling process of the flood diversion and storage areas. However, this simplification completely ignored the complex situation of the flood diversion and storage areas and could not provide the flood diversion and storage areas with refined (temporal and spatial inundation) information to evaluate the pros and cons of their own flood diversion strategies. Therefore, it is urgent to analyze the activation strategy of the flood diversion and storage area group in detail and form a more scientific and reasonable flood diversion scheduling plan, which can provide important technical support for flood prevention and 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 flood diversion areas, a knowledge graph of the application of flood diversion area groups is constructed for flood conditions of different frequencies, and corresponding flood diversion scheduling optimization plans are given, which can provide a reference for improving the utilization efficiency of flood diversion area groups 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 flood diversion strategy management method for joint scheduling of flood diversion areas, comprising the following steps:

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

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

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

[0009] Step 4: Simulate the flood scenario set of each flood storage area according to different frequency flood conditions;

[0010] Step 5: Construct a knowledge graph of 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, obtaining high temporal and spatial resolution digital elevation DEM and land use type data of each flood storage area, assigning different roughness to each land use type, and modifying the DEM terrain data according to the location of the flood storage area and the measured data;

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

[0015] Step 13: Construct a two-dimensional hydrodynamic model and calibrate parameters:

[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 gravitational acceleration; 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 velocity, expressed as d is the total water depth d = h + ζ; u s 、v s is the source-sink flow rate; S xx , S xy, S yx , S yy is the wave radiation stress, also known as the residual momentum flow, τ bx , τ by is the component of bottom friction stress in the x and y directions.

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

[0023] Step 21, query the relevant flood diversion and storage area atlas data, determine the limited water levels corresponding to the flood diversion and storage areas and the flood discharge gates, and based on the constructed two-dimensional hydrodynamic model of the flood diversion and storage area, set solid wall boundaries at all flood diversion and discharge gates, and set the gate width and bottom elevation according to the design engineering information, and make comparisons and corrections based on the remote sensing interpretation data during the flood diversion process and the water volume of the flood diversion and storage area;

[0024] Step 22: simulate and calculate the flood distribution and flood discharge process under different frequency flood flow 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 discharge determined according to the designed flood storage capacity of different flood storage areas is:

[0026] Step 31, query the relevant flood diversion area atlas data, determine the designed flood storage capacity, and based on the constructed two-dimensional hydrodynamic model of the flood diversion area, stop flood diversion when the flood inflow at the diversion gate reaches the designed flood storage capacity, and obtain the corresponding flood diversion duration, wherein the flood diversion capacity V of the nth flood diversion area is determined 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 volume from the first to the nth flood diversion area, that is, the cumulative flood diversion volume 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 and storage area, each flood diversion and storage area determines the change of water flow 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, respectively simulate and calculate the two-dimensional hydrodynamic change process in the flood diversion and storage area;

[0033] Step 42, according to the water flow simulation results of the flood diversion and storage area under the flood flow conditions of different frequencies obtained in step 42, a flood diversion scenario set of the flood diversion and storage area is formed, wherein the scenario set includes the flood diversion duration of different observation points in the flood diversion and storage area and the flooded area information of the design flood level of the flood diversion and storage area;

[0034] The construction of the flood diversion area uses a knowledge graph and determines a variety of flood diversion schemes as follows:

[0035] Step 51: Based on the aforementioned flood diversion scenario set of flood diversion and storage areas under different flood frequency conditions, different flood diversion and storage plans are formulated in combination with existing dispatching rules, and under the condition of a specific frequency design flood level, the activation timing and activation sequence 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 group described in step 51, construct a knowledge graph of the application of the flood diversion and storage area group, including flood magnitude, spatial topological relationship of the flood diversion and storage area group, and a data set 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 step 51 and step 52, the schemes of sequential activation or simultaneous activation of flood diversion and storage area groups are organized, and the response relationship between flood diversion and storage area groups under different flood diversion and scheduling schemes is analyzed to form a flood diversion and 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 constraint conditions of the joint scheduling of the flood storage and diversion area group, the present invention uses the expected flood resource volume to characterize the utilization potential of the flood storage and diversion area group. The calculation formula is as follows:

[0040]

[0041] In the formula, p i is a flood return period; W ui For a flood storage area, p i The flood water volume of the flood; n is the number of flood return periods, pi+1 For ratio p i A flood recurrence period of one order of magnitude higher; 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 deal with the timing, duration and safety of flood diversion, realize 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, including:

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

[0045] The simulation calculation module is used to simulate and calculate the flood distribution and flood 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] The flood scenario simulation module is used to simulate the flood scenario of each flood storage area according to different frequency flood conditions;

[0048] The flood diversion scheme construction module is used to construct a knowledge graph of flood diversion and storage area applications and determine a variety of 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, wherein the computer-readable storage medium stores program code, and when the program code is executed by a processor, the steps of the method for managing the joint scheduling and flood diversion strategy of flood diversion areas as described above are implemented.

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

[0052] This application relies on the construction of a two-dimensional hydrodynamic model of flood diversion and storage area groups. By simulating and calculating the flow conditions of floods with different frequencies in the study area, the diversion process in each flood diversion and storage area is given, which can intuitively display information such as the inundation range and diversion duration. Furthermore, combined with the existing flood diversion scheduling strategy, a detailed knowledge map of flood diversion application of flood diversion and storage area groups under different flow conditions is given, and corresponding flood diversion scheduling plans are proposed, which can fully utilize the diversion capacity and efficiency of flood diversion and storage areas. The route plan is clear, the implementation process is clear, 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 drawings required for use in the embodiments of the present application will be briefly introduced below. 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 related drawings can be obtained based on these drawings without paying 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 area of ​​the present invention.

[0056] Figure 3 It is a knowledge application diagram of flood diversion and dispatching scheme of flood storage areas 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 drawings in the embodiments of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0058] The terms "comprises," "comprising," or any other variation 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 explicitly 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 exclude 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 should not be understood as indicating or implying relative importance, nor should they be understood as requiring or implying any such 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 flood discharge process of the flood diversion area, determining the flood diversion and flood discharge duration according to the designed flood storage capacity of different flood diversion areas, simulating the flood scenario set of 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 comparing and selecting multiple steps of obtaining a target flood diversion scheme based on the objective function and constraints.

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

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

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

[0064] Step 13: Construct a two-dimensional hydrodynamic model and calibrate parameters:

[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 tidal 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 gravitational acceleration; 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 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 wave radiation stresses (also known as residual momentum flow). τ bx , τ by is the component of 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 limited water levels corresponding to 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, solid wall boundaries are set at all flood 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 flood 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 according to 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 the 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, the cumulative flood diversion volume V corresponding to the use of the nth flood diversion area is finally obtained. 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 volume from the first to the nth flood diversion area, that is, the cumulative flood diversion volume 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) is 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 and storage areas, during the flood diversion process, each flood diversion and storage area determines the water flow changes near the main observation points (including safety platforms, flood diversion and transfer roads, residential areas, power drainage stations, etc.), and draws plane flow field atlases at different flood diversion duration stages.

[0080] Step 4: Simulate the flood scenario set of each flood storage area according to different frequency flood conditions.

[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, wherein the scenario set includes information such as the flood diversion duration of different observation points in the flood diversion area and the inundation area of ​​the flood diversion area under the design flood level.

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

[0084] Step 51, according to the aforementioned flood diversion scenario set of flood storage areas under different frequency flood conditions, different flood diversion and storage plans are formulated in combination with existing scheduling rules, and under the condition of specific frequency design flood level, the activation time 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 group described in step 51, construct a knowledge graph of the application of the flood diversion and storage area group, including flood magnitude, spatial topological relationship of the flood diversion and storage area group, and a data set 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 step 51 and step 52, the schemes of sequential activation or simultaneous activation of flood diversion and storage area groups are organized, and the response relationship between flood diversion and storage area groups under different flood diversion and scheduling schemes is analyzed to form a flood diversion and 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 constraint conditions of the joint scheduling of the flood storage and diversion area group, the present invention uses the expected flood resource volume to characterize the utilization potential of the flood storage and diversion area group. The calculation formula is as follows:

[0089]

[0090] In the formula, p i is a flood return period, a; W ui For a flood storage area, p i The flood water volume, m3; n is the number of flood return periods, p i+1 For 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: According to the contents of claims 1-6, based on the objective function and constraints, a target scheme is selected from the flood diversion scheme set to effectively deal with the timing, duration and safety of flood diversion, so as to achieve flood diversion and meet the target needs of 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 the high-temporal and spatial resolution digital elevation DEM and land use type data of 1#~5# flood diversion embankments, assign different roughness to each land use type, and modify the DEM terrain data according to the location of the flood diversion area and the measured data. Secondly, grid the range of each flood diversion embankment, adjust the grid quality according to the parameters such as the maximum grid area, the minimum allowable angle, the number of grids, and the local maximum grid area, and perform spatial interpolation of the digital elevation DEM in the divided grid. Then, construct a two-dimensional hydrodynamic model of each flood diversion embankment and perform parameter calibration.

[0094] Step 2: First, query the atlas data of 1#~5# flood diversion and flood discharge gates to determine the limited water level corresponding to the diversion and flood discharge gates. Based on the constructed two-dimensional hydrodynamic model of the flood diversion and flood discharge area, set the solid wall boundary except for the diversion and flood discharge gates. The gate width and bottom elevation are set according to the design engineering information, and compared and corrected according to the remote sensing interpretation data and the water volume of the flood diversion and flood discharge area during the diversion process. Secondly, simulate and calculate the diversion and flood discharge process of each flood diversion and flood discharge embankment under different frequency flood flow conditions, and count the changes in water flow conditions (water level, flow rate) near important observation points in the flood diversion and flood discharge area (including safety platforms, diversion and flood discharge transfer roads, residential areas, power drainage stations, etc.).

[0095] Step 3: First, query the atlas data of 1#~5# flood diversion embankments 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 the diversion and obtain the corresponding diversion duration. Secondly, in the process of simulating the diversion of each flood diversion embankment, judge the flow changes near each major observation point (including safety platform, diversion and flood transfer road, residential area, power drainage station, etc.), and draw the plane flow field atlas of different diversion duration stages.

[0096] Step 4: First, based on the constructed two-dimensional hydrodynamic model of the flood diversion area, the two-dimensional hydrodynamic change process of the 1#~5# flood diversion dikes is simulated for the flood flow conditions of different frequencies in the target river section. Secondly, a flood diversion scenario set of the flood diversion area is formed, which includes information such as the flood diversion duration at different observation points in the flood diversion area and the flooded area of ​​the flood diversion area under the design flood level.

[0097] Step 5: First, according to the established flood diversion scenario set of each flood diversion and storage embankment, different flood diversion and storage plans are formulated in combination with the existing dispatching rules, and the activation time and activation order of each flood diversion and storage area are determined under the condition of the specific frequency design flood level. Secondly, the application knowledge graph of 1#~5# flood diversion and storage embankments is constructed, including flood magnitude, spatial topological relationship of flood diversion and storage area groups, and data sets of changes in water flow conditions at major observation points in each flood diversion and storage embankment. Then, the schemes of sequential activation or simultaneous activation of each flood diversion and storage embankment are sorted out, and the response relationship between flood diversion and storage area groups under different flood diversion and scheduling schemes is analyzed to form a set of flood diversion and scheduling schemes.

[0098] Step 6: First, based on the objective function and constraints of the joint dispatch 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. Secondly, based on the objective function and constraints, a target plan that can effectively respond to the timing, duration and safety of flood diversion is selected from the flood diversion plan 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 build a two-dimensional hydrodynamic model;

[0101] The simulation calculation module is used to simulate and calculate the flood distribution and flood 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] The flood scenario simulation module is used to simulate the flood scenario of each flood storage area according to different frequency flood conditions;

[0104] The flood diversion scheme construction module is used to construct a knowledge graph of flood diversion and storage area applications and determine a variety of 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, which stores program code. When the program code is executed by a processor, the steps of the flood diversion strategy management method for joint scheduling of flood diversion areas are implemented as described above.

[0107] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may 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 may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include 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 generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. 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 capable of directing a computer or other programmable data processing device to operate 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 A 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 operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0111] In a typical configuration, a computing device includes one or more processors (CPU), 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 include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. 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 disk read-only memory (CD-ROM), digital versatile disk (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 temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0114] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope 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 of each flood storage area and construct a two-dimensional hydrodynamic model; Step 2: Simulate and calculate the flood distribution and flood discharge process in the flood storage area; Step 3: Determine the duration of flood distribution and flood discharge according to the designed flood storage capacity of different flood storage areas; Step 4: Simulate the flood scenario set of each flood storage area according to different frequency flood conditions; Step 5: Construct a knowledge graph of 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 plan.

2. A flood diversion strategy management method for joint scheduling of flood diversion areas as claimed in 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, obtaining high temporal and spatial resolution digital elevation DEM and land use type data of each flood storage area, assigning different roughness to each land use type, and modifying the DEM terrain data according to the location of the flood storage area and the measured data; Step 12: Grid each flood storage area, adjust the grid quality according to the maximum grid area, minimum allowable angle, number of grids, and local maximum grid area parameters, and perform spatial interpolation of the digital elevation DEM in the grids; Step 13: Construct a two-dimensional hydrodynamic model and calibrate parameters: Continuity equation: Where, t is time; u, v is the velocity component 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, Momentum equation: Where, f is the Coriolis coefficient, f = 2ωsinΦ, ω represents the Earth's rotational velocity, Φ is the local geographic latitude; g is the gravitational acceleration; 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 velocity, expressed as d is the total water depth d = h + ζ; u s 、v s is the source-sink flow rate; S xx , S xy , S yx , S yy is the wave radiation stress, also known as the residual momentum flow, τ bx , τ by is the component of bottom friction stress in the x and y directions.

3. A flood diversion strategy management method for joint scheduling of flood diversion areas as claimed in claim 2, characterized in that: The simulation calculation of flood storage area flood distribution and flood discharge process is specifically as follows: Step 21, query the relevant flood diversion and storage area atlas data, determine the limited water levels corresponding to the flood diversion and storage areas and the flood discharge gates, and based on the constructed two-dimensional hydrodynamic model of the flood diversion and storage area, set solid wall boundaries at all flood diversion and discharge gates, and set the gate width and bottom elevation according to the design engineering information, and make comparisons and corrections based on the remote sensing interpretation data during the flood diversion process and the water volume of the flood diversion and storage area; Step 22: simulate and calculate the flood distribution and flood discharge process under different frequency flood flow conditions in each flood storage area, and count the changes in water flow conditions near important observation points in the flood storage area.

4. A flood diversion strategy management method for joint scheduling of flood diversion areas as claimed in claim 3, characterized in that: The specific duration of flood discharge and flood discharge determined according to the designed flood storage capacity of different flood storage areas is: Step 31, query the relevant flood diversion area atlas data, determine the designed flood storage capacity, and based on the constructed two-dimensional hydrodynamic model of the flood diversion area, stop flood diversion when the flood inflow at the diversion gate reaches the designed flood storage capacity, and obtain the corresponding flood diversion duration, wherein the flood diversion capacity V of the nth flood diversion area is determined 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: V P (n)=V P (n-1)+V p (n),n>1 V P (1)=V p (1),n=1 Where V P (n) is the cumulative flood diversion volume from the first to the nth flood diversion area, that is, the cumulative flood diversion volume 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; Step 32: Based on the constructed two-dimensional hydrodynamic model of the flood diversion and storage area, each flood diversion and storage area determines the change of water flow near each main observation point during the flood diversion period, and draws a plane flow field atlas at different flood diversion periods.

5. A flood diversion strategy management method for joint scheduling of flood diversion areas as claimed in claim 4, characterized in that: 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, respectively 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 42, a flood diversion scenario set of the flood diversion area is formed, wherein the scenario set includes the flood diversion duration of different observation points in the flood diversion area and the inundation area information of the designed flood level of the flood diversion area.

6. A flood diversion strategy management method for joint scheduling of flood diversion areas as claimed in claim 5, characterized in that: The construction of the flood diversion area uses a knowledge graph and determines a variety of flood diversion schemes as follows: Step 51: Based on the aforementioned flood diversion scenario set of flood diversion and storage areas under different flood frequency conditions, different flood diversion and storage plans are formulated in combination with existing dispatching rules, and under the condition of a specific frequency design flood level, the activation timing and activation sequence 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 group described in step 51, construct a knowledge graph of the application of the flood diversion and storage area group, including flood magnitude, spatial topological relationship of the flood diversion and storage area group, and a data set of changes in water flow conditions at major observation points in each flood diversion and storage area. Step 53: Based on the contents of step 51 and step 52, the schemes of sequential activation or simultaneous activation of flood diversion and storage area groups are organized, and the response relationship between flood diversion and storage area groups under different flood diversion and scheduling schemes is analyzed to form a flood diversion and scheduling scheme set.

7. A flood diversion strategy management method for joint scheduling of flood diversion areas as claimed in claim 6, characterized in that: 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 constraint conditions of the joint scheduling of the flood storage and diversion area group, the present invention uses the expected flood resource volume to characterize the utilization potential of the flood storage and diversion area group. The calculation formula is as follows: In the formula, p i is a flood return period; W ui For a flood storage area, p i The flood water volume of the flood; n is the number of flood return periods, p i+1 For ratio p i A flood recurrence period of one order of magnitude higher; W ui+1 For a flood storage area, p i+1 of flood water inundation; Step 62: Based on the objective function and constraints, select a target solution from the flood diversion solution set that can effectively deal with the timing, duration and safety of flood diversion, realize flood diversion, and thus meet the target needs of the flood control and rescue departments.

8. 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 build a two-dimensional hydrodynamic model; The simulation calculation module is used to simulate and calculate the flood distribution and flood 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; The flood scenario simulation module is used to simulate the flood scenario of each flood storage area according to different frequency flood conditions; The flood diversion scheme construction module is used to construct a knowledge graph of flood diversion and storage area applications and determine a variety of flood diversion schemes; The comparison module is used to compare and select the target flood diversion plan based on the objective function and constraints.

9. 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 as described in any one of claims 1 to 7 are implemented.

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