Calculation method of reservoir inundation processing data table

Abstract

The invention relates to the technical field of electric digital data processing, in particular to a calculation method of a reservoir inundation processing data table, which comprises the following steps of: acquiring hydrological basic data, and calculating difference data according to the hydrological basic data; the difference values are screened according to a preset difference value threshold value, and backwater tail end section data are calculated according to a screening result; performing secondary screening on the hydrological basic data according to the backwater tail end section data, and calculating end point section data according to a screening result; and the backwater tail end section data and the end point section data are corrected and then output. The method has the effect of improving the calculation efficiency of the reservoir inundation treatment range.

Description

Technical Field

[0001] The invention relates to the technical field of electric digital data processing, in particular to a calculation method for a reservoir flooding processing data table. Background Art

[0002] The reservoir inundation area includes the inundation area below the normal water level of the reservoir, as well as the area above the normal water level of the reservoir that is temporarily inundated by reservoir flood backwater, wind and waves, ship waves, ice jams, etc. During the planning and design stage of the hydropower project, it is necessary to determine the scope of reservoir inundation treatment so as to treat the farmland, houses, etc. in the potentially affected areas. To determine the scope of reservoir inundation treatment, it is necessary to calculate the reservoir inundation treatment data table, which includes the mileage from the dam, the multi-year average flow water surface elevation, the natural flood water surface elevation, the design flood backwater elevation, the safety superelevation elevation, etc.

[0003] At present, the reservoir inundation processing data table usually collects and summarizes the basic hydrological data of the area where the reservoir is to be built, and then manually calculates the data based on the summarized information. During the calculation process, calculation errors are prone to occur or the elevation comparison adjustment steps between frequencies are omitted, resulting in a decrease in the accuracy of the calculation results and low calculation efficiency. Summary of the invention

[0004] In order to improve the calculation efficiency of a reservoir flooding processing data table, the present invention provides a calculation method for a reservoir flooding processing data table.

[0005] The present invention provides a method for calculating a reservoir flooding treatment data table, which adopts the following technical solution:

[0006] A method for calculating a reservoir flooding processing data table comprises the following steps:

[0007] Obtain basic hydrological data and calculate differential data based on the basic hydrological data;

[0008] The difference is screened according to a preset difference threshold, and the backwater end section data is calculated according to the screening result;

[0009] Perform secondary screening of the basic hydrological data based on the backwater end section data, and calculate the end section data based on the screening results;

[0010] The return water end section data and the endpoint section data are corrected and then output.

[0011] In a specific feasible implementation scheme, the basic hydrological data include section number, mileage from the dam, multi-year average flow water surface elevation, natural flood water surface elevation, design flood backwater elevation, and safe superelevation elevation.

[0012] In a specific feasible implementation scheme, the backwater end section data includes the mileage of the backwater end section from the dam, the multi-year average flow water surface line elevation of the backwater end section, the natural flood water surface line elevation of the backwater end section, the design flood backwater elevation of the backwater end section, the safe superelevation elevation of the backwater end section and the flooding treatment elevation of the backwater end section.

[0013] In a specific implementation scheme, the difference is screened according to a preset difference threshold, and the backwater end section data is calculated according to the screening result, including the following steps:

[0014] If the difference is equal to the difference threshold, the basic hydrological data and the difference data under this condition are used as the backwater end section data for subsequent calculations;

[0015] If it does not exist, select two differences of difference 1>0.3>difference 2, where difference 1 is the difference closest to 0.3 in the interval greater than 0.3, and difference 2 is the difference closest to 0.3 in the interval less than 0.3; calculate the backwater end section data based on the hydrological basic data and difference data of difference 1 and difference 2.

[0016] In a specific feasible implementation plan, the calculation formula for the design flood backwater elevation of the backwater end section is: E 13 =E 12 +(E 14 -E 12 )*(F 12 -0.3) / (F 12 -F 14 ),

[0017] In the above formula, E 13 Design flood backwater elevation for the backwater end section;

[0018] E 12 is the design flood backwater elevation corresponding to the difference of 1;

[0019] E 14 is the design flood backwater elevation corresponding to the difference of 2;

[0020] F 12 The difference is 1;

[0021] F 14 The difference is 2.

[0022] In a specific feasible implementation scheme, the calculation formula for the natural flood water surface elevation at the backwater end section is: D 13 =D 12 +(D 14 -D 12 )*(F 12 -0.3) / (F 12 -F 14),

[0023] In the above formula, D 13 It is the elevation of the natural flood water surface at the backwater end section;

[0024] D 12 is the natural flood water surface elevation corresponding to a difference of 1;

[0025] D 14 is the natural flood water surface elevation corresponding to the difference of 2.

[0026] In a specific feasible implementation plan, the calculation formula for the multi-year average flow water surface elevation of the backwater end section is: C 13 =C 12 +(C 14 -C 12 )*(F 12 -0.3) / (F 12 -F 14 ),

[0027] In the above formula, C 13 The multi-year average flow water surface elevation of the backwater end section;

[0028] C 12 is the multi-year average flow water surface elevation corresponding to a difference of 1;

[0029] C 14 It is the multi-year average flow water surface elevation corresponding to the difference of 2.

[0030] In a specific feasible implementation plan, the calculation formula of the distance between the backwater end section and the dam is: 13 =B 12 +(B 14 -B 12 )*(F 12 -0.3) / (F 12 -F 14 ),

[0031] In the above formula, B 13 The distance between the backwater end section and the dam;

[0032] B 12 is the mileage from the dam corresponding to the difference of 1;

[0033] B 14 is the mileage from the dam corresponding to the difference 2;

[0034] Backwater end section safe super elevation G 13 Consistent with the safe super elevation;

[0035] The calculation formula for the flooding treatment elevation of the backwater end section is: H 13 =MAX(E13 , G 13 ),

[0036] In the above formula, H 13 It is the flooding treatment elevation of the backwater end section.

[0037] In a specific feasible implementation plan, the hydrological basic data is secondary screened according to the backwater end section data, and the end section data is calculated according to the screening results, including the following steps:

[0038] Screening and backwater end section flooding treatment elevation H 13 The two closest multi-year average flow water surface elevations, multi-year average flow water surface elevation 1>H 13 > Multi-year average flow water surface elevation 2;

[0039] The terminal section data is calculated based on the multi-year average flow water surface line elevation 1 and the multi-year average flow water surface line elevation 2.

[0040] In a specific possible implementation scheme, the terminal section data includes the mileage of the terminal section from the dam, the multi-year average flow water surface elevation of the terminal section, and the submerged elevation of the terminal section;

[0041] The calculation formula for the distance between the terminal section and the dam is: 16 =B 15 +(B 17 -B 15 )*(C 15 -C 16 ) / (C 15 -C 17 ),

[0042] In the above formula, B 16 is the distance between the terminal section and the dam;

[0043] B 15 is the mileage from the dam corresponding to elevation 1;

[0044] B 17 is the mileage from the dam corresponding to elevation 2;

[0045] C 15 is elevation 1;

[0046] C 17 The elevation is 2.

[0047] In summary, the present invention has the following beneficial effects:

[0048] Importing basic hydrological data can automatically calculate the reservoir inundation treatment elevation of each section and frequency, automatically match and compare the treatment elevations of flood control objects of different frequencies in the same section, and automatically perform result corrections, greatly improving the efficiency and accuracy of reservoir inundation treatment elevation calculations. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a flow chart of the calculation method of flood frequency data table. DETAILED DESCRIPTION

[0050] The following combination Figure 1 The present invention is described in further detail.

[0051] Reference Figure 1 , a method for calculating a reservoir flooding processing data table comprises the following steps:

[0052] S100, obtaining basic hydrological data and difference data.

[0053] The basic hydrological data include section number, mileage from the dam, multi-year average flow water surface elevation, natural flood water surface elevation, design flood backwater elevation, safety superelevation elevation, etc. The difference data include difference and submergence treatment elevation.

[0054] The calculation formula for the difference is: Difference = design flood backwater elevation - natural flood water surface elevation; the calculation formula for the submergence treatment elevation is: submergence treatment elevation = MAX (design flood backwater elevation, safety superelevation elevation).

[0055] S200, screening the difference according to a preset difference threshold, and calculating the backwater end section data.

[0056] The difference threshold is 0.3, and the working condition with a difference of 0.3 is screened. If there is a working condition with a difference of 0.3, the hydrological basic data and the difference data under this working condition are used as the backwater end section data, and subsequent calculations are performed directly; if there is no working condition with a difference of 0.3, two differences of difference 1>0.3>difference 2 are selected, and difference 1 is the difference closest to 0.3 in the interval greater than 0.3, and difference 2 is the difference closest to 0.3 in the interval less than 0.3.

[0057] The backwater end section data are inserted between the two sets of hydrological basic data and the difference data corresponding to the two differences. The backwater end section data include the distance from the backwater end section to the dam, the multi-year average flow water surface elevation of the backwater end section, the natural flood water surface elevation of the backwater end section, the design flood backwater elevation of the backwater end section, the safe superelevation elevation of the backwater end section, and the flooding treatment elevation of the backwater end section.

[0058] The calculation formula for the design flood backwater elevation of the backwater end section is: E 13 =E 12 +(E 14 -E 12 )*(F 12 -0.3) / (F 12 -F14 ),

[0059] In the above formula, E 13 Design flood backwater elevation for the backwater end section;

[0060] E 12 is the design flood backwater elevation corresponding to the difference of 1;

[0061] E 14 is the design flood backwater elevation corresponding to the difference of 2;

[0062] F 12 The difference is 1;

[0063] F 14 The difference is 2.

[0064] The calculation formula for the natural flood water surface elevation at the backwater end section is: D 13 =D 12 +(D 14 -D 12 )*(F 12 -0.3) / (F 12 -F 14 ),

[0065] In the above formula, D 13 It is the elevation of the natural flood water surface at the backwater end section;

[0066] D 12 is the natural flood water surface elevation corresponding to a difference of 1;

[0067] D 14 is the natural flood water surface elevation corresponding to the difference of 2.

[0068] The calculation formula for the multi-year average flow water surface elevation of the backwater end section is: C 13 =C 12 +(C 14 -C 12 )*(F 12 -0.3) / (F 12 -F 14 ),

[0069] In the above formula, C 13 The multi-year average flow water surface elevation of the backwater end section;

[0070] C 12 is the multi-year average flow water surface elevation corresponding to a difference of 1;

[0071] C 14 It is the multi-year average flow water surface elevation corresponding to the difference of 2.

[0072] The calculation formula for the distance between the backwater end section and the dam is: 13 =B 12 +(B 14 -B 12 )*(F 12 -0.3) / (F 12 -F 14 ),

[0073] In the above formula, B 13 The distance between the backwater end section and the dam;

[0074] B 12 is the mileage from the dam corresponding to the difference of 1;

[0075] B 14 is the mileage from the dam corresponding to the difference of 2.

[0076] Backwater end section safe super elevation G 13 Consistent with the safe superelevation elevation.

[0077] The calculation formula for the flooding treatment elevation of the backwater end section is: H 13 =MAX(E 13 , G 13 ),

[0078] In the above formula, H 13 is the flooding treatment elevation of the backwater end section. In the difference data, the values ​​of the flooding treatment elevation corresponding to all differences less than 0.3 are updated to the same value as H 13 The values ​​are consistent.

[0079] S300, performing secondary screening on the basic hydrological data according to the flooding treatment elevation of the backwater terminal section, and calculating the terminal section data.

[0080] Screening and backwater end section flooding treatment elevation H 13 The two closest multi-year average flow water surface elevations, multi-year average flow water surface elevation 1>H 13 > Multi-year average flow water surface line elevation 2. For the sake of convenience, multi-year average flow water surface line elevation 1 is referred to as elevation 1, and multi-year average flow water surface line elevation 2 is referred to as elevation 2. The terminal section data is inserted between the two hydrological basic data corresponding to elevation 1 and elevation 2. The terminal section data includes the terminal section mileage from the dam, the multi-year average flow water surface line elevation of the terminal section, and the terminal section submerged elevation.

[0081] Multi-year average flow water surface elevation C at the end section 16 =H 13 ,

[0082] Among them, C 16 is the multi-year average flow water surface elevation of the terminal section;

[0083] The calculation formula for the distance between the terminal section and the dam is: 16 =B 15 +(B 17 -B 15 )*(C 15 -C 16 ) / (C 15 -C 17 ),

[0084] In the above formula, B 16 The distance between the terminal section and the dam;

[0085] B 15 is the mileage from the dam corresponding to elevation 1;

[0086] B 17 is the mileage from the dam corresponding to elevation 2;

[0087] C 15 is elevation 1;

[0088] C 17 The elevation is 2.

[0089] End section flooding treatment elevation H 16 =H 13 ;

[0090] Delete the design flood backwater elevation, natural flood water surface elevation, difference, safety superelevation elevation and flooding treatment elevation corresponding to elevation 2.

[0091] S400, the calculation result is corrected and output.

[0092] Calculate the backwater end section data and endpoint section data at different frequencies such as 1%, 2%, 3.33%, 5%, 10%, and 20%.

[0093] When the flooding treatment elevation of the backwater end section with a frequency of 20% is greater than the flooding treatment elevation of the terminal section with a frequency of 5%, the flooding treatment elevation of the terminal section with a frequency of 5% is set to be equal to the flooding treatment elevation of the backwater end section with a frequency of 20%, and the flooding treatment elevations behind the secondary flooding treatment elevation at a frequency of 5% are all unified as the flooding treatment elevation of the backwater end section with a frequency of 20%; the mileage of the terminal section at a frequency of 5% is set to be equal to the mileage of the terminal section at a frequency of 20%, and the multi-year average flow water surface line elevation of the terminal section at a frequency of 5% is set to be equal to the multi-year average flow water surface line elevation of the terminal section at a frequency of 20%.

[0094] The corrected data are visualized and output in the form of tables, line graphs, etc., to obtain data tables of different flood frequencies such as 1%, 2%, 3.33%, 5%, 10%, and 20%.

[0095] To facilitate understanding, further explanation is provided below with reference to specific cases.

[0096] S100, obtaining basic hydrological data and difference data.

[0097] Table 1 shows the basic hydrological data collected and the difference data calculated.

[0098] Table 1

[0099]

[0100] S200, screening the difference according to a preset difference threshold, and calculating the backwater end section data.

[0101] Insert the calculated return water end section data between section numbers DM06 and DM05, and update Table 1 to the following Table 2.

[0102] Table 2

[0103]

[0104]

[0105] S300, performing secondary screening on the basic hydrological data according to the flooding treatment elevation of the backwater terminal section, and calculating the terminal section data.

[0106] Insert the calculated end point section data between section numbers DM05 and DM04, and update Table 2 to the following Table 3.

[0107] Table 3

[0108]

[0109]

[0110] S400, the calculation result is corrected and output.

[0111] According to steps S100 - S300 , a data table of 20% flood frequency can also be calculated, as shown in Table 4 for details.

[0112] Table 4

[0113]

[0114]

[0115] By analyzing and comparing the data in Table 3 and Table 4, it is found that the flooding treatment elevation of the backwater end section that meets the 20% frequency (114.76) is greater than the flooding treatment elevation of the terminal section that meets the 5% frequency (112.28), so the data in Table 3 are corrected to obtain Table 5, and the data in Table 4 are corrected to obtain Table 6. For ease of understanding, the data before correction are retained in Table 5 and Table 6 and distinguished by the section number, and only the corrected data are actually output.

[0116] Table 5

[0117]

[0118]

[0119] Table 6

[0120]

[0121] The data outputs in Tables 5 and 6 are data tables for 5% and 20% flood frequencies.

[0122] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for calculating a reservoir flooding processing data table, characterized in that: The steps include: Obtain basic hydrological data and calculate differential data based on the basic hydrological data; The difference is screened according to a preset difference threshold, and the backwater end section data is calculated according to the screening result; Perform secondary screening of the basic hydrological data based on the backwater end section data, and calculate the end section data based on the screening results; The return water end section data and the endpoint section data are corrected and then output.

2. The method for calculating the reservoir flooding processing data table according to claim 1, characterized in that: The basic hydrological data include section number, mileage from the dam, multi-year average flow water surface elevation, natural flood water surface elevation, design flood backwater elevation, and safe superelevation elevation.

3. The method for calculating the reservoir flooding processing data table according to claim 1, characterized in that: The backwater end section data include the mileage of the backwater end section from the dam, the multi-year average flow water surface line elevation of the backwater end section, the natural flood water surface line elevation of the backwater end section, the design flood backwater elevation of the backwater end section, the safe superelevation elevation of the backwater end section and the flooding treatment elevation of the backwater end section.

4. The method for calculating the reservoir flooding processing data table according to claim 3, characterized in that: The difference is screened according to a preset difference threshold, and the backwater end section data is calculated according to the screening result, including the following steps: If the difference is equal to the difference threshold, the basic hydrological data and the difference data under this condition are used as the backwater end section data for subsequent calculations; If it does not exist, select two differences of difference 1>0.3>difference 2, where difference 1 is the difference closest to 0.3 in the interval greater than 0.3, and difference 2 is the difference closest to 0.3 in the interval less than 0.3; calculate the backwater end section data based on the hydrological basic data and difference data of difference 1 and difference 2.

5. The method for calculating the reservoir flooding processing data table according to claim 4, characterized in that: The calculation formula for the design flood backwater elevation of the backwater end section is: E 13 =E 12 +(E 14 -E 12 )*(F 12 -0.3) / (F 12 -F 14 ), In the above formula, E 13 Design flood backwater elevation for the backwater end section; E 12 is the design flood backwater elevation corresponding to the difference of 1; E 14 is the design flood backwater elevation corresponding to the difference of 2; F 12 The difference is 1; F 14 The difference is 2.

6. The method for calculating the reservoir flooding processing data table according to claim 5, characterized in that: The calculation formula for the natural flood water surface elevation at the backwater end section is: D 13 =D 12 +(D 14 -D 12 )*(F 12 -0.3) / (F 12 -F 14 ), In the above formula, D 13 It is the elevation of the natural flood water surface at the backwater end section; D 12 is the natural flood water surface elevation corresponding to a difference of 1; D 14 is the natural flood water surface elevation corresponding to the difference of 2.

7. The method for calculating the reservoir flooding processing data table according to claim 6, characterized in that: The calculation formula for the multi-year average flow water surface elevation of the backwater end section is: C 13 =C 12 +(C 14 -C 12 )*(F 12 -0.3) / (F 12 -F 14 ), In the above formula, C 13 The multi-year average flow water surface elevation of the backwater end section; C 12 is the multi-year average flow water surface elevation corresponding to a difference of 1; C 14 It is the multi-year average flow water surface elevation corresponding to the difference of 2.

8. The method for calculating the reservoir flooding processing data table according to claim 7, characterized in that: The calculation formula for the distance between the backwater end section and the dam is: 13 =B 12 +(B 14 -B 12 )*(F 12 -0.3) / (F 12 -F 14 ), In the above formula, B 13 The distance between the backwater end section and the dam; B 12 is the mileage from the dam corresponding to the difference of 1; B 14 is the mileage from the dam corresponding to the difference 2; Backwater end section safe super elevation G 13 Consistent with the safe super elevation; The calculation formula for the flooding treatment elevation of the backwater end section is: H 13 =MAX(E 13 , G 13 ), In the above formula, H 13 It is the flooding treatment elevation of the backwater end section.

9. The method for calculating the reservoir flooding processing data table according to claim 1, characterized in that: The hydrological basic data is screened again according to the backwater end section data, and the end section data is calculated according to the screening results, including the following steps: Screening and backwater end section flooding treatment elevation H 13 The two closest multi-year average flow water surface elevations, multi-year average flow water surface elevation 1>H 13 > Multi-year average flow water surface elevation 2; The terminal section data is calculated based on the multi-year average flow water surface line elevation 1 and the multi-year average flow water surface line elevation 2.

10. The method for calculating the reservoir flooding processing data table according to claim 9, characterized in that: The terminal section data include the distance from the terminal section to the dam, the multi-year average flow water surface elevation of the terminal section, and the submerged elevation of the terminal section; The calculation formula for the distance between the terminal section and the dam is: 16 =B 15 +(B 17 -B 15 )*(C 15 -C 16 ) / (C 15 -C 17 ), In the above formula, B 16 is the distance between the terminal section and the dam; B 15 is the mileage from the dam corresponding to elevation 1; B 17 is the mileage from the dam corresponding to elevation 2; C 15 is elevation 1; C 17 The elevation is 2.

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