A method, system, medium and equipment for obtaining a social and economic data investigation range in a river-shaped reservoir safety risk area

Abstract

The present application relates to a kind of river shape reservoir safety risk area social economic data investigation range acquisition method, system, medium and equipment, it includes: according to the multiple period remote sensing image of the area where the water level observation station of reservoir main dam upstream main dam is located and its synchronous water level monitoring data, water level elevation correction value is obtained to correct reservoir check flood level, flood control high water level;According to DEM data, the intersection of river channel line and reservoir management range surface in the direction of reservoir tail is calculated, i.e.the elevation of reservoir tail;According to the elevation of reservoir tail and the corrected reservoir check flood level, flood control high water level, according to the elevation reference value of the extraction of each area investigation range, according to the number of partition, along river channel, the reservoir area is partitioned, and according to the elevation reference value of the extraction of each area investigation range, the investigation range is extracted in each area, to obtain final investigation range.The present application can realize the fast, accurate acquisition of river shape reservoir safety risk area social economic data investigation range.

Description

Technical Field

[0001] This invention relates to the field of water conservancy data processing technology, and in particular to a method, system, medium, and equipment for obtaining socio-economic data survey scope within the safety risk zone of a river-shaped reservoir. Background Technology

[0002] The inundation area corresponding to the reservoir's check flood level, defining the maximum "safety risk zone" that poses a potential threat to the upstream socio-economic development, represents the theoretical maximum boundary for conducting socio-economic data surveys. However, for channel-shaped reservoirs, their inundation area is heavily influenced by both complex topography and dynamic backwater curves. Traditional methods for obtaining the survey area of ​​such reservoirs typically rely on hydraulic models and long-term historical hydrological, flood, cross-sectional monitoring, and channel gradient data to calculate the backwater curve. This method generally suffers from limitations such as high data acquisition difficulty, long cycle time, high cost, and complex technical implementation, making it impractical and unable to meet the need for rapid, batch acquisition of survey areas. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this invention is to provide a method, system, medium, and equipment for obtaining the survey scope of socio-economic data within the safety risk zone of a river-shaped reservoir, enabling rapid and accurate acquisition of the survey scope of socio-economic data within the safety risk zone of a river-shaped reservoir.

[0004] To achieve the above objectives, in a first aspect, the technical solution adopted by the present invention is as follows: a method for obtaining the survey scope of socio-economic data within the safety risk zone of a river-shaped reservoir, comprising: calculating a water level elevation correction value based on multi-period remote sensing images of the area near the water level observation station upstream of the main dam of the reservoir and its concurrent water level monitoring data; using the water level elevation correction value to correct the reservoir check flood level and flood control high water level, thereby unifying the reservoir check flood level, flood control high water level and DEM data elevation benchmark; calculating the elevation of the intersection point of the river line vector and the reservoir management area surface vector in the reservoir tail direction based on the DEM data, wherein the elevation of the intersection point in the reservoir tail direction is the reservoir tail elevation; calculating the number of reservoir zones and the elevation reference value extracted for the survey scope of each zone according to the set elevation difference based on the reservoir tail elevation and the corrected reservoir check flood level and flood control high water level; dividing the reservoir area into zones along the river according to the number of zones; and extracting the survey scope zone by zone according to the elevation reference value extracted for each zone to obtain the final survey scope.

[0005] Furthermore, based on multiple remote sensing images of the area near the main dam upstream of the reservoir's main dam, and concurrent water level monitoring data, water level elevation correction values ​​were calculated, including:

[0006] Select remote sensing images of the area where the water level observation station is located near the main dam upstream of the reservoir's main dam, and extract the water boundary line within a set range around the water level observation station;

[0007] Spatial overlay analysis was performed on the waterline extraction results and DEM data. The average elevation of the DEM grid covered by the waterline was used as the free water surface elevation of the water level observation station during image observation. Simultaneously, the water level monitoring values ​​of the water level observation station and the remote sensing image were obtained.

[0008] Calculate the difference between the free water surface elevation value of the water level observation station and the water level monitoring value during the same period when the image was captured;

[0009] Multiple remote sensing images and concurrent water level monitoring data were selected to obtain the differences between the free water surface elevation values ​​of a series of water level observation stations and the concurrent water level monitoring values. The average value of the differences corresponding to each remote sensing image was calculated and used as the water level elevation correction value.

[0010] Furthermore, the water level elevation correction value is used to correct the reservoir's check flood level and flood control high water level:

[0011]

[0012]

[0013] In the formula, The reservoir's check flood level before elevation correction; This refers to the reservoir's high flood control water level before elevation correction. The check flood level for the reservoir after elevation correction; This is the reservoir's high flood control water level after elevation correction; Based on The average error between the water level monitoring value and the free water surface elevation value obtained from the remote sensing image and the water level monitoring data of the same period upstream of the main dam of the reservoir.

[0014] Furthermore, the elevation of the reservoir tail is calculated as follows:

[0015] Through spatial analysis, the intersection point of the river channel line vector and the reservoir management area surface vector in the direction of the reservoir tail is obtained;

[0016] Calculate the average elevation of the DEM data around the intersection point, and use the average elevation as the reservoir tail elevation.

[0017] Furthermore, the number of zones in the library is calculated based on the set elevation difference, including:

[0018] Calculate the elevation of the reservoir tail With the reservoir flood control high water level after elevation correction elevation difference ;

[0019] Based on elevation difference and the reservoir check flood level after elevation correction Calculate the elevation reference values ​​extracted from the socio-economic data survey area at the reservoir tail along the reservoir channel line. The tail section is the last partition;

[0020] According to the set elevation difference and elevation reference values The number of zones in the storage area was calculated.

[0021] Furthermore, the number of reservoir zones is as follows:

[0022]

[0023] In the formula, This is the floor function; N is the number of library partitions; The set elevation difference;

[0024] Will As the elevation reference value extracted from the socio-economic survey area where the reservoir dam is located, the elevation reference value extracted from the socio-economic survey area of ​​Zone 1 is... , the 2nd, ..., the The elevation reference values ​​for each zone are based on the elevation difference. The steps increase progressively, with the first section being the section where the reservoir dam is located.

[0025] Furthermore, the scope of the investigation includes:

[0026] The initial zoning reference point is the intersection of the river channel vector and the reservoir dam, and the final zoning reference point is the intersection of the river channel vector and the reservoir management area surface vector in the direction of the reservoir tail. The reservoir area is divided into zones along the river according to the number of zones.

[0027] Based on the elevation reference values ​​extracted from the survey scope of each district, the survey scope is extracted district by district, and the extraction results of each district are merged to form the initial survey scope;

[0028] The initial survey area was merged with the reservoir management area, excluding the area downstream of the dam, to obtain the final survey area.

[0029] Secondly, the technical solution adopted by this invention is as follows: a system for acquiring socio-economic data survey scope within the safety risk zone of a river-shaped reservoir, comprising: a correction module: based on multi-period remote sensing images of the area near the main dam upstream of the reservoir's main dam and its concurrent water level monitoring data, calculating water level elevation correction values, and using these correction values ​​to correct the reservoir's check flood level and flood control high water level, thereby unifying the reservoir's check flood level, flood control high water level, and DEM data elevation benchmark; and a reservoir tail elevation acquisition module. Based on DEM data, the elevation of the intersection point of the river channel vector and the reservoir management area surface vector in the direction of the reservoir tail is calculated. The elevation of this intersection point in the direction of the reservoir tail is the reservoir tail elevation. The survey range determination module: Based on the reservoir tail elevation and the corrected reservoir check flood level and flood control high water level, the number of reservoir zones and the elevation reference value extracted for the survey range of each zone are calculated according to the set elevation difference. The reservoir area is divided into zones along the river according to the number of zones, and the survey range is extracted zone by zone according to the elevation reference value extracted for the survey range of each zone to obtain the final survey range.

[0030] Thirdly, the technical solution adopted by the present invention is: a computer-readable storage medium for storing one or more programs, wherein the one or more programs include instructions, which, when executed by a computing device, cause the computing device to perform any of the methods described above.

[0031] Fourthly, the technical solution adopted by the present invention is: a computing device comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for performing any of the methods described above.

[0032] This invention, by adopting the above technical solution, has the following advantages: Based on DEM data, and combined with reservoir characteristic water levels and water level monitoring information near the upstream of the reservoir dam, this invention can quickly and in batches extract the survey scope of socio-economic data within the safety risk zone of a river-shaped reservoir. Compared with existing technologies:

[0033] 1. This invention overcomes the dependence on long-term historical hydrological, flood, cross-sectional monitoring and river slope data.

[0034] 2. This invention processes the data in sections along the river channel, rather than using a uniform water level value for flat cutting, thus fully considering the impact of topography and reservoir backwater on the extraction results.

[0035] 3. The method for rapidly extracting socio-economic data survey scope within the safety risk zone of river-shaped reservoirs in this invention can quickly and in batches obtain the required survey scope of reservoirs, making it more operable and more efficient.

[0036] In summary, this invention improves accuracy while also enabling rapid and efficient extraction of socio-economic data survey scope within the safety risk zone of river-shaped reservoirs. Attached Figure Description

[0037] Figure 1 This is a flowchart of the method for obtaining the scope of socio-economic data survey within the safety risk zone of a river-shaped reservoir in this invention.

[0038] Figure 2 This is a schematic diagram of the partitioning in an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram illustrating the extraction results of the socio-economic survey scope of each region in an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the initial survey scope after merging the results of the socio-economic survey scope extraction of each region in this embodiment of the invention;

[0041] Figure 5 This is a schematic diagram illustrating the final survey scope obtained by merging the initial survey scope with the reservoir management scope upstream of the dam in an embodiment of the present invention. Detailed Implementation

[0042] To address the problems of existing techniques for extracting the scope of socio-economic data within the safety risk zone of river-shaped reservoirs, which rely on long-term data such as historical hydrological data, flood data, cross-sectional monitoring data, and river slope, resulting in long technical cycles, high costs, and poor real-time performance, this invention provides a method, system, medium, and equipment for acquiring the survey scope of socio-economic data within the safety risk zone of river-shaped reservoirs. Based on a high-precision DEM, and combined with basic spatial data such as reservoir characteristic water levels, reservoir dam, reservoir channel line, and reservoir management area vector, as well as multi-period remote sensing images and concurrent water level monitoring data, this invention rapidly extracts the survey scope of socio-economic data within the safety risk zone of river-shaped reservoirs. This solves the problem that, due to the distribution of river-shaped reservoirs in hilly and mountainous areas, the survey scope of socio-economic data is significantly affected by reservoir backwater, making it difficult to determine the survey scope.

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] In one embodiment of the present invention, a method for obtaining the survey scope of socio-economic data within the safety risk zone of a river-shaped reservoir is provided. In this embodiment, as shown... Figure 1 As shown, the method includes the following steps:

[0046] 1) Elevation correction of reservoir check flood level and flood control high water level: Based on multiple remote sensing images of the corresponding area of ​​the water level observation station near the main dam upstream of the reservoir main dam and the water level monitoring data of the same period, the elevation correction value is calculated to correct the reservoir check flood level and flood control high water level, so as to unify the elevation benchmark of the reservoir check flood level and flood control high water level with the DEM data.

[0047] 2) Calculate the reservoir tail elevation: Based on the DEM data, calculate the elevation of the intersection point of the river channel vector and the reservoir management area surface vector in the direction of the reservoir tail; the elevation of the intersection point in the direction of the reservoir tail is the reservoir tail elevation.

[0048] 3) Obtaining the survey scope: Based on the reservoir tail elevation and the corrected reservoir check flood level and flood control high water level, calculate the number of reservoir zones and the elevation reference values ​​extracted for the survey scope of each zone according to the set elevation difference. Divide the reservoir area into zones along the river according to the number of zones, and extract the survey scope for each zone according to the elevation reference values ​​extracted for the survey scope of each zone to obtain the final survey scope. This provides technical support for flood control scheduling and effectively coordinates and reduces socio-economic losses in the reservoir safety risk zone when facing flood disasters.

[0049] In step 1) above, the water level elevation correction value is calculated based on multiple remote sensing images of the area near the water level observation station upstream of the main dam of the reservoir, and the water level monitoring data of the same period, including the following steps:

[0050] 1.1) Select remote sensing images of the area where the water level observation station is located near the main dam upstream of the reservoir's main dam, and extract the water boundary line within a set range around the water level observation station; in this embodiment, the set range is within 1KM.

[0051] 1.2) Spatial overlay analysis was performed on the waterline extraction results and DEM data. The average elevation of the DEM grid covered by the waterline was used as the free water surface elevation of the water level observation station during image observation. Simultaneously, the water level monitoring values ​​of the water level observation station and the remote sensing image were obtained.

[0052] 1.3) Calculate the difference between the free water surface elevation value of the water level observation station and the water level monitoring value during the same period when the image was captured.

[0053] In this embodiment, the specific calculation formula is as follows:

[0054]

[0055] In the formula, For the selected remote sensing image period, For the first The free water surface elevation value of the water level observation station near the main dam upstream of the reservoir's main dam when the remote sensing image was captured; For the first The number of DEM grids covered by the waterline within 1KM around the water level observation station near the upstream main dam of the reservoir during the imaging of the remote sensing image. For the first When imaging remote sensing images, The first DEM raster The elevation value of each grid cell.

[0056] If the reservoir's check flood level, flood control high water level, and water level monitoring data from the upstream main dam observation station use the same elevation datum, and there are inconsistencies with the elevation datum of the DEM data, it is necessary to uniformly convert the elevation datum of the reservoir's check flood level and flood control high water level to the elevation datum used in the DEM data.

[0057] 1.4) Using the same method as steps 1.1) to 1.3), select multiple periods of remote sensing images and concurrent water level monitoring data to obtain the difference between a series of free water surface elevation values ​​of water level observation stations and concurrent water level monitoring values. Calculate the average value of the difference corresponding to each period of remote sensing images and use this average value as the water level elevation correction value.

[0058] Specifically, the average error is:

[0059]

[0060] In the formula, This represents the total number of periods of the selected multi-period remote sensing images; For the first Water level monitoring values ​​from a water level observation station near the main dam upstream of the reservoir's main dam during the period of remote sensing image imaging; For based on The average error between the water level monitoring value and the free water surface elevation value obtained from the remote sensing image and the water level monitoring data of the same period upstream of the main dam of the reservoir.

[0061] In step 1) above, the reservoir check flood level and flood control high water level are corrected using the water level elevation correction value, specifically as follows:

[0062]

[0063]

[0064] In the formula, The reservoir's check flood level before elevation correction; This refers to the reservoir's high flood control water level before elevation correction. The reservoir check flood level is obtained after elevation correction; This is the high water level for flood control of the reservoir obtained after elevation correction.

[0065] In step 2) above, calculating the elevation of the reservoir tail includes the following steps:

[0066] 2.1) Through spatial analysis, the intersection point of the river channel line vector and the reservoir management area surface vector in the direction of the reservoir tail is obtained.

[0067] 2.2) Calculate the average elevation of the DEM data around the intersection point and use the average elevation as the tail elevation of the reservoir.

[0068] In this embodiment, geographic information technology is used to extract the intersection point of the river channel line vector and the reservoir management area surface vector in the direction of the reservoir tail, as well as the reservoir management area line vector within a 100m radius of the intersection point. The extracted reservoir management area line vector is spatially overlaid with DEM data, and the average elevation of the DEM raster covered by the reservoir management area line vector is used as the elevation of the intersection point of the river channel line vector and the reservoir management area surface vector in the direction of the reservoir tail.

[0069]

[0070] In the formula, This represents the total number of DEM grids covered by the reservoir management area line vector within 100m of the intersection point of the river channel line vector and the reservoir management area surface vector in the direction of the reservoir tail. The first vector coverage of the reservoir management area Elevation values ​​of each DEM raster; It represents the elevation of the intersection point of the river channel vector and the reservoir management area surface vector in the direction of the reservoir tail.

[0071] In step 3) above, the elevation reference values ​​extracted according to the set elevation difference calculation database area number and the survey scope of each area include the following steps:

[0072] 3.1.1) Calculate the elevation of the reservoir tail. With the reservoir flood control high water level after elevation correction elevation difference .

[0073] Specifically, elevation difference for:

[0074]

[0075] In the formula, It is the elevation difference between the point where the reservoir channel line vector and the reservoir management area surface vector intersect in the direction of the reservoir tail and the high water level for flood control obtained after elevation correction.

[0076] 3.1.2) Based on elevation difference and the reservoir check flood level after elevation correction Calculate the elevation reference values ​​extracted from the socio-economic data survey area at the tail end of the reservoir (i.e., the last sub-region) along the reservoir channel line. The tail section is the last partition.

[0077] Specifically, elevation reference values for:

[0078]

[0079] In the formula, The elevation reference value is extracted from the socio-economic data survey area at the tail of the reservoir along the reservoir channel line. This is an adjustment coefficient, an empirical value, ranging from 1 to 2. For projects with upstream reservoirs, it is generally taken as 1.

[0080] 3.1.3) According to the set elevation difference and elevation reference value The number of zones in the storage area was calculated.

[0081] In this embodiment, the set elevation difference The elevation difference is 1-2.5 m.

[0082] Among them, the number of reservoir zones for:

[0083]

[0084] In the formula, This is the floor function.

[0085] Will As the elevation reference value extracted from the socio-economic survey area where the reservoir dam is located, the elevation reference value extracted from the socio-economic survey area of ​​Zone 1 ; the 2nd, ..., the Elevation reference values ​​for each zone ( , ..., According to the elevation difference Step-by-step increase, that is:

[0086]

[0087]

[0088]

[0089] ...

[0090]

[0091] For example, assuming the high flood control water level of the reservoir is obtained after elevation correction. m, the reservoir check flood level obtained after elevation correction. m, the elevation of the intersection point of the river channel vector and the reservoir management area surface vector obtained by the aforementioned method in the direction of the reservoir tail. 4m; Set height difference It is 2m, that is Set the adjustment coefficient to 1, that is... Then the number of partitions can be calculated. .

[0092] =

[0093] =

[0094] =

[0095] =

[0096] In step 3) above, obtaining the scope of the investigation includes the following steps:

[0097] 3.2.1) The intersection of the river channel vector and the reservoir dam is used as the initial partitioning reference point, and the intersection of the river channel vector and the reservoir management area surface vector in the direction of the reservoir tail is used as the final partitioning reference point. The reservoir area is partitioned along the river according to the number of partitions.

[0098] In this embodiment, the number of partitions The corresponding partition diagram is as follows: Figure 2 As shown.

[0099] 3.2.2) Based on the elevation reference values ​​extracted from the survey scope of each district, the survey scope is extracted for each district, and the extraction results of each district are merged to form the initial survey scope.

[0100] In this embodiment, a schematic diagram of the socio-economic survey scope extraction results for each sub-region is shown below.Figure 3 As shown in the diagram. The initial survey area formed after the merger is illustrated below. Figure 4 As shown.

[0101] 3.2.3) The initial survey area is merged with the reservoir management area upstream of the dam (i.e., combined), and the downstream area of ​​the dam is discarded to obtain the final survey area.

[0102] In this embodiment, a schematic diagram of the final survey scope is shown below. Figure 5 As shown.

[0103] In summary, this invention overcomes the dependence of traditional hydraulic modeling methods on long-term historical hydrological data, flood data, cross-sectional monitoring data, and river slope data. It has good operability and can quickly and accurately obtain the scope of socio-economic data surveys within the safety risk zone of river-shaped reservoirs. This provides data support for the survey of socio-economic data of towns, villages, farmland, highways, railways, hospitals, schools, scenic spots, etc. within the safety risk zone of reservoirs.

[0104] In one embodiment of the present invention, a system for obtaining the scope of socio-economic data surveys within the safety risk zone of a river-shaped reservoir is provided, comprising:

[0105] Correction module: Based on multiple remote sensing images of the area near the main dam upstream of the reservoir's main dam and the water level monitoring data from the same period, the water level elevation correction value is calculated and obtained. The water level elevation correction value is used to correct the reservoir's check flood level and flood control high water level, so as to unify the reservoir's check flood level, flood control high water level and DEM data elevation benchmark.

[0106] Reservoir Tail Elevation Acquisition Module: Based on DEM data, calculate the elevation of the intersection point of the river channel vector and the reservoir management area surface vector in the direction of the reservoir tail. The elevation of this intersection point in the direction of the reservoir tail is the reservoir tail elevation.

[0107] The survey scope determination module calculates the number of reservoir zones and the elevation reference value extracted for each zone based on the reservoir tail elevation, the corrected reservoir check flood level, and the flood control high water level. It then divides the reservoir area into zones along the river based on the number of zones and extracts the survey scope for each zone according to the elevation reference value extracted for each zone to obtain the final survey scope.

[0108] In the above embodiments, based on multiple remote sensing images of the area near the main dam upstream of the reservoir's main dam and concurrent water level monitoring data, a water level elevation correction value is calculated, including:

[0109] Select remote sensing images of the area where the water level observation station is located near the main dam upstream of the reservoir's main dam, and extract the water boundary line within a set range around the water level observation station;

[0110] Spatial overlay analysis was performed on the waterline extraction results and DEM data. The average elevation of the DEM grid covered by the waterline was used as the free water surface elevation of the water level observation station during image observation. Simultaneously, the water level monitoring values ​​of the water level observation station and the remote sensing image were obtained.

[0111] Calculate the difference between the free water surface elevation value of the water level observation station and the water level monitoring value during the same period when the image was captured;

[0112] Multiple remote sensing images and concurrent water level monitoring data were selected to obtain the differences between the free water surface elevation values ​​of a series of water level observation stations and the concurrent water level monitoring values. The average value of the differences corresponding to each remote sensing image was calculated and used as the water level elevation correction value.

[0113] In this embodiment, the water level elevation correction value is used to correct the reservoir check flood level and flood control high water level:

[0114]

[0115]

[0116] In the formula, The reservoir's check flood level before elevation correction; This refers to the reservoir's high flood control water level before elevation correction. The check flood level for the reservoir after elevation correction; This is the reservoir's high flood control water level after elevation correction; For based on The average error between the water level monitoring value and the free water surface elevation value obtained from the remote sensing image and the water level monitoring data of the same period upstream of the main dam of the reservoir.

[0117] In the above embodiment, the reservoir tail elevation is calculated as follows: through spatial analysis, the intersection point of the river channel vector and the reservoir management area surface vector in the direction of the reservoir tail is obtained; the average elevation of the DEM data around the intersection point is calculated, and the average elevation is used as the reservoir tail elevation.

[0118] In the above embodiments, calculating the number of zones in the library based on the set elevation difference includes:

[0119] Calculate the elevation of the reservoir tail With the reservoir flood control high water level after elevation correction elevation difference ;

[0120] Based on elevation difference and the reservoir check flood level after elevation correction Calculate the elevation reference values ​​extracted from the socio-economic data survey area at the reservoir tail along the reservoir channel line. The tail section is the last partition;

[0121] According to the set elevation difference and elevation reference values The number of zones in the storage area was calculated.

[0122] In this embodiment, the number of warehouse zones is:

[0123]

[0124] In the formula, This is the floor function; N is the number of library partitions; The set elevation difference;

[0125] Will As the elevation reference value extracted from the socio-economic survey area where the reservoir dam is located, the elevation reference value extracted from the socio-economic survey area of ​​Zone 1 is... , the 2nd, ..., the The elevation reference values ​​for each zone are based on the elevation difference. Step-by-step increase.

[0126] In the above embodiments, obtaining the scope of the investigation includes:

[0127] The initial zoning reference point is the intersection of the river channel vector and the reservoir dam, and the final zoning reference point is the intersection of the river channel vector and the reservoir management area surface vector in the direction of the reservoir tail. The reservoir area is divided into zones along the river according to the number of zones.

[0128] Based on the elevation reference values ​​extracted from the survey scope of each district, the survey scope is extracted district by district, and the extraction results of each district are merged to form the initial survey scope;

[0129] The initial survey area was merged with the reservoir management area, excluding the area downstream of the dam, to obtain the final survey area.

[0130] The system provided in this embodiment is used to execute the above-described method embodiments. For specific processes and details, please refer to the above embodiments, which will not be repeated here.

[0131] In one embodiment of the present invention, a computing device is provided. This computing device can be a terminal and may include a processor, a communication interface, memory, a display screen, and an input device. The processor, communication interface, and memory communicate with each other via a communication bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. When the computer programs are executed by the processor, they implement the methods described in the above embodiments. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The communication interface is used for wired or wireless communication with external terminals. Wireless communication can be achieved through Wi-Fi, a management network, NFC (Near Field Communication), or other technologies. The display screen can be a liquid crystal display (LCD) or an e-ink display. The input device can be a touch layer covering the display screen, or buttons, a trackball, or a touchpad mounted on the casing of the computing device, or an external keyboard, touchpad, or mouse. The processor can call logical instructions stored in the memory.

[0132] Furthermore, the logical instructions in the aforementioned memory can be implemented as software functional units and sold or used as independent products, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0133] In one embodiment of the present invention, a computer program product is provided, the computer program product including a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, and when the program instructions are executed by a computer, the computer is able to perform the methods provided in the above-described method embodiments.

[0134] In one embodiment of the present invention, a non-transitory computer-readable storage medium is provided, which stores server instructions that cause a computer to perform the methods provided in the above embodiments.

[0135] The computer-readable storage medium provided in the above embodiments has a similar implementation principle and technical effect to the above method embodiments, and will not be described again here.

[0136] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0137] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0138] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for obtaining a survey range of social and economic data in a safety risk zone of a river-type reservoir, characterized in that, The application relates to a method for obtaining a surveying range of a reservoir, and belongs to the technical field of reservoir management. According to multi-period remote sensing images of a region where a water level observation station near an upstream main dam of a reservoir is located and synchronous water level monitoring data, a water level elevation correction value is calculated, the water level elevation correction value is used to correct a reservoir checking flood level and a flood control high water level, and the reservoir checking flood level and the flood control high water level are unified with a DEM data elevation datum, including the following steps: remote sensing images of a region where a water level observation station near an upstream main dam of a reservoir is located are selected, and a water edge line in a set range around the water level observation station is extracted; spatial overlay analysis is carried out on the water edge line extraction result and DEM data, the average elevation of DEM grids covered by the water edge line is taken as a free water surface elevation value of the water level observation station at the time of image observation, and a water level monitoring value of the water level observation station at the same period as the remote sensing images is synchronously obtained; the difference between the free water surface elevation value of the water level observation station at the time of image observation and the water level monitoring value at the same period is calculated; a series of water level observation station free water surface elevation value and water level monitoring value difference values are obtained by selecting multi-period remote sensing images and synchronous water level monitoring data, the average value of the difference values corresponding to each period of remote sensing images is calculated, and the average value is taken as the water level elevation correction value; According to the DEM data, the elevation of the intersection point of the river line vector and the reservoir management range surface vector in the reservoir tail direction is calculated, and the intersection point in the reservoir tail direction is the reservoir tail elevation; According to the reservoir tail elevation and the corrected reservoir checking flood level and flood control high water level, the number of reservoir area partitions and the elevation reference values extracted from the surveying ranges of the partitions are calculated according to a set height difference, the reservoir area is partitioned along the river channel according to the number of partitions, and the surveying ranges are extracted from each partition according to the elevation reference values extracted from the surveying ranges of the partitions, so that the final surveying range is obtained; The acquisition of the surveying range includes: taking the intersection point of the river line vector and the reservoir dam as an initial partition reference point, taking the intersection point of the river line vector and the reservoir management range surface vector in the reservoir tail direction as a final partition reference point, and partitioning the reservoir area along the river channel according to the number of partitions; According to the elevation reference values extracted from the surveying ranges of the partitions, the surveying ranges are extracted from each partition, and the extraction results of the partitions are combined to form an initial surveying range; The initial surveying range is fused with the reservoir management range, and the downstream area of the dam is removed, so that the final surveying range is obtained; The number of reservoir area partitions is calculated according to a set height difference, including: Calculate the reservoir tail elevation H 管理库尾 The elevation difference ΔH of the reservoir flood control high water level H 防洪高 corrected by elevation: ΔH = H 管理库尾 - H 防洪高 ; Based on the elevation difference ΔH and the reservoir checking flood level H after elevation correction 校核 , the elevation reference value H extracted along the reservoir river line direction in the social and economic data investigation range of the tail area of the reservoir is calculated 库尾区 , wherein the tail area of the reservoir is the last partition; wherein the elevation reference value H 库尾区 is: H 库尾区 =H 校核 +exp×ΔH, exp is the adjustment coefficient; According to the set height difference and the height reference value H 库尾区 The number of library area partitions N is calculated as follows: N= floor (H 库尾区 - H 校核 ) / D) + 1; In the formula, floor is a floor function; N is the number of library area partitions; and D is a set height difference.

2. The method of claim 1, wherein the method comprises: obtaining the range of the social and economic data in the safety risk zone of the riverway-shaped reservoir. The water level elevation correction value is used to correct the reservoir checking flood level and the flood control high water level: H 校核 = h 校核 -Δ h ; H 防洪高 = h 防洪高 -Δ h ; In the formula, h 校核 is the reservoir check flood level before elevation correction; h 防洪高 is the reservoir flood control high water level before elevation correction; H 校核 is the reservoir check flood level after elevation correction; 防洪高 is the reservoir flood control high water level after elevation correction; Δ h is the average error of the water level monitoring value of the water level observation station near the main dam of the reservoir and the free water surface elevation value based on n period remote sensing images and synchronous water level monitoring data.

3. The method of claim 1, wherein the method further comprises: determining the range of the social and economic data to be collected based on the riverway shape of the reservoir. The calculation of the reservoir tail elevation is: The intersection point of the river line vector and the reservoir management range surface vector in the reservoir tail direction is obtained through spatial analysis; The average elevation of the DEM data around the intersection point is calculated, and the average elevation is taken as the reservoir tail elevation.

4. The method of claim 1, wherein the method further comprises: determining the range of the social and economic data to be collected based on the riverway shape of the reservoir. H 校核 As the elevation reference value of the social and economic survey range of the area where the reservoir dam is located, the elevation reference value of the social and economic survey range of the first subarea is H 第1分区 , the elevation reference values of the second, …, N-1th subareas are increased in steps of the height difference D, wherein the first subarea is the subarea where the reservoir dam is located.

5. A system for obtaining the scope of social and economic data survey in the safety risk area of a river-shaped reservoir, which is used to implement the method for obtaining the scope of social and economic data survey in the safety risk area of a river-shaped reservoir according to any one of claims 1 to 4, characterized in that, The application relates to a method for obtaining a surveying range of a reservoir, and belongs to the technical field of reservoir management. The correction module is used for calculating a water level elevation correction value according to multi-period remote sensing images of a region where a water level observation station near an upstream main dam of a reservoir is located and synchronous water level monitoring data, correcting a reservoir checking flood level and a flood control high water level by using the water level elevation correction value, and unifying the reservoir checking flood level and the flood control high water level with a DEM data elevation datum. The reservoir tail elevation obtaining module: according to DEM data, the elevation of the intersection point of the river line vector and the reservoir management range surface vector in the tail direction of the reservoir is calculated, and the elevation of the intersection point in the tail direction of the reservoir is the tail elevation of the reservoir; The investigation range determining module: according to the tail elevation of the reservoir, the corrected reservoir check flood level and the flood control high water level, the number of subareas of the reservoir area and the elevation reference value of the investigation range of each subarea are calculated according to the set height difference, the reservoir area is processed by subarea along the river according to the number of subareas, and the investigation range is extracted by subarea according to the elevation reference value of the investigation range of each subarea, so as to obtain the final investigation range.

6. A computer-readable storage medium storing one or more programs, the one or more programs comprising instructions that when executed by a computer cause the computer to perform a method comprising: The one or more programs include instructions that, when executed by a computing device, cause the computing device to perform any of the methods of claims 1-4.

7. A computing device, comprising: Comprise: One or more processors, memories, and one or more programs, wherein one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs include instructions for executing any of the methods of claims 1-4.

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