CN116384124B - River basin design flood calculation method based on process segmentation - Google Patents
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Abstract
The invention provides a river basin design flood calculation method based on process segmentation, which comprises the following steps that an upstream flood process is forward-evolved, the assimilation of a control section of an upstream corresponding flood process is controlled, the segmentation of the section design flood process is controlled, and the upstream corresponding design flood process is reversely inverted; the problems of unbalanced upstream and downstream design water quantity, different peak quantity frequencies and the like existing in the existing method calculation can be avoided, and the accuracy and rationality of the river basin design flood calculation can be improved.
Description
Technical Field
The invention relates to the technical field of hydrologic computation, in particular to a river basin design flood computing method based on process segmentation.
Background
The flood design is the design basis of various water conservancy planning and water conservancy and hydropower engineering. At present, design flood calculation methods related to flood frequency calculation, flood process line amplification and the like are mature, and the method aims at single-station design flood calculation. Along with the water conservancy and hydropower development of the river basin, reservoir regulation causes difficulty and meaningless calculation of the design flood of the downstream control section of the reservoir, and the regional composition of the design flood above the control section, namely the river basin design flood, needs to be planned.
The most commonly used area composition of the design flood in China is a typical flood composition method or a same-frequency flood composition method, the upstream flood processes of the two flood composition methods are typical by adopting the same flood process, and the design flood of a certain area upstream and the design flood of a control section are amplified in the same-frequency combination mode according to the control section flood peak or flood multiple ratio. Because the typical flood process of the upstream section does not consider the along-range flattening and time propagation of the flood process, when the control section flood peak flood volume is multiplied, the problems of unbalance of the upstream and downstream design flood processes, different peak volumes, over-frequency of design flood of the upstream section and the like cannot be avoided.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a river basin design flood calculation method based on process segmentation.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention provides a river basin design flood calculation method based on process segmentation, which comprises the following steps:
s1, forward evolution of an upstream flood process;
s2, assimilating control sections of corresponding upstream flood processes;
s3, controlling the section design flood process segmentation;
s4, reversely inverting the upstream corresponding flood design process.
Further, the S1 specifically includes: flood process line Q of upstream section i (t) calculating to a control section by adopting a river course flood evolution method to obtain a corresponding upstream flood process Q of the control section si (t)＝U i Q i (t) wherein,
n i obtaining the number of river arithmetic coefficients; u (u) i Is the coefficient of calculation.
Further, the S2 specifically is: statistics of all upstream corresponding flood processes in t periodn is the number of upstream sections, and t time periods are adopted to control the flood process Q (t) of the station to the corresponding upstream flood process Q si (t) assimilation, i.e
Further, the specific steps of S3 are as follows: developing the calculation of the flood frequency of the control section, and deducing the flood design process Q of the control section with the design frequency p p (t) design of flood process Q by using and controlling section p (t) amplifying the corresponding flood process Q upstream after the same method and parameters s ′ i (t) obtaining the corresponding design flood process Q 'of the upstream after the segmentation of the design frequency p' psi (t)。
Further, the specific steps of S4 are as follows: by adopting upstream corresponding flood process Q' psi (t) reverse river flood inversion to upstream sectionThe flood design process combination of all upstream sections is the river basin design flood, wherein +.>
Further, the river basin design flood refers to a combination of corresponding floods of an upstream section matched with the control section design flood.
Further, the control section comprises a river section where important engineering and important hydrologic stations are located.
Further, in the step S1, the upstream section is a river section located upstream of the control section, n water collecting areas are not overlapped, and the sum of the water collecting areas is equal to the water collecting area of the control section;
river course flood evolution refers to the calculation of the flood process from upstream to downstream, and comprises Ma Sijing methods of a converging curve and a water flow mathematical model.
Further, in the step S3, the calculation of the flood frequency of the control section refers to the calculation of the flood peak of each frequency p and the flood of different time periods by adopting the flood data of the control section;
controlling the section design flood process Qp (t), namely controlling the section flood process Q (t) according to the amplification method comprising the same-time ratio and the same frequency, so that the flood peak of the amplified flood process and the flood of different time periods are the same as the flood peak of the design frequency p;
upstream corresponding design flood process Q' psi (t) including post-assimilation upstream corresponding flood process typical amplification and upstream corresponding flood process frequency combination amplification.
Further, in the step S2, a period t is selected according to the characteristics of the river basin and the engineering scale;
in the step S4, inversion of the reverse river course flood refers to the calculation of the flood process from downstream to upstream by using the original forward flood evolution method and parameters.
The beneficial effects of the invention are as follows: river channel storage such as along-journey flattening and time propagation in the flood process can be considered;
the problems of unbalance of the upstream and downstream flood design process, different peak amounts, over-frequency of the design flood of the upstream section and the like can be avoided.
Drawings
FIG. 1 is a block diagram of a basin design flood calculation method based on process segmentation of the present invention;
fig. 2 is a design flooding process of a station a according to an embodiment of the present invention;
fig. 3 is a design flooding process of a station B in the embodiment of the present invention;
fig. 4 shows a design flooding process for compartment C in an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
A river basin design flood calculation method based on process segmentation comprises the following steps:
s1, forward evolution of an upstream flood process;
s2, assimilating control sections of corresponding upstream flood processes;
s3, controlling the section design flood process segmentation;
s4, reversely inverting the upstream corresponding flood design process.
The S1 specifically comprises the following steps: flood process line Q of upstream section i (t) calculating to a control section by adopting a river course flood evolution method to obtain a corresponding upstream flood process Q of the control section si (t)＝U i Q i (t) wherein,
n i obtaining the number of river arithmetic coefficients; u (u) i Is the coefficient of calculation.
The step S2 is specifically as follows: statistics of all upstream corresponding flood processes in t periodn is the number of upstream sections, and t time periods are adopted to control the flood process Q (t) of the station to the corresponding upstream flood process Q si (t) assimilation, i.e.)>
The specific steps of the S3 are as follows: developing the calculation of the flood frequency of the control section, and deducing the flood design process Q of the control section with the design frequency p p (t) design of flood process Q by using and controlling section p (t) amplifying the corresponding flood process Q upstream after the same method and parameters s ′ i (t) obtaining the corresponding design flood process Q 'of the upstream after the segmentation of the design frequency p' psi (t)。
The specific steps of the S4 are as follows: by adopting upstream corresponding flood process Q' psi (t) reverse river flood inversion to upstream sectionThe flood design process combination of all upstream sections is the river basin design flood, wherein +.>
The river basin design flood refers to the combination of corresponding floods of the upstream section matched with the control section design flood.
The control section comprises a river section where important engineering and important hydrologic stations are located.
In the step S1, the upstream section is positioned upstream of the control section, n water collecting areas are not overlapped, and the sum of the water collecting areas is equal to the river section of the water collecting area of the control section;
river course flood evolution refers to the calculation of the flood process from upstream to downstream, and comprises Ma Sijing methods of a converging curve and a water flow mathematical model.
In the step S3, the calculation of the control section flood frequency refers to the calculation of flood peak of various frequencies p and flood of different time periods by adopting the control section long series flood data;
control section design flood process Q p (t) controlling the section flood process Q (t), and enabling the flood peak and the flood of different time periods of the flood process after amplification to be identical to the flood peak and the flood of different time periods of the design frequency p according to the amplification method comprising the same-time ratio and the same-frequency;
upstream corresponding design flood process Q' psi (t) including post-assimilation upstream corresponding flood process typical amplification and upstream corresponding flood process frequency combination amplification.
In the step S2, a period t is selected according to the characteristics of the river basin and the engineering scale;
in the step S4, inversion of the reverse river course flood refers to the calculation of the flood process from downstream to upstream by using the original forward flood evolution method and parameters.
The method provided by the patent and the traditional model year method are adopted to develop the river basin design flood of the section Z of the control station and the corresponding node A, B on the upstream of the section Z and the section C, analysis and comparison are carried out, and the design flood processes of the station A and the station B are respectively shown in the figures 1 and 2. Proved by experiments, the water balance errors of the classical year method in 1961, 1966 and 2012 are respectively-2.1 percent, -3.6 percent and 8.1 percent, and the water balance errors of the method provided by the patent are all 0, so that the method can well solve the water balance error problem of the classical year method for calculating the river basin design flood. As can be seen from fig. 1 to 3, the peak flood values of the station a and the interval C in the three model years calculated by the model year method are smaller than those of the method of the patent, which also indicates that the conventional model year method may underestimate the flood risk.
The foregoing examples merely illustrate embodiments of the invention and are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present patent is to be determined by the appended claims.
Claims (6)
1. The river basin design flood calculation method based on process segmentation is characterized by comprising the following steps of:
s1, forward evolution of an upstream flood process;
s2, assimilating control sections of corresponding upstream flood processes;
s3, controlling the section design flood process segmentation;
s4, reversely inverting the upstream corresponding flood design process;
the S1 specifically comprises the following steps: flood process line Q of upstream section i (t) calculating to a control section by adopting a river course flood evolution method to obtain a corresponding upstream flood process Q of the control section si (t)＝U i Q i (t) wherein,
n i obtaining the number of river arithmetic coefficients; u (u) i Is the coefficient of calculation;
the step S2 is specifically as follows: statistics of all upstream corresponding flood processes in t periodn is the number of upstream sections, and t time periods are adopted to control the flood process Q (t) of the station to the corresponding upstream flood process Q si (t) assimilation, i.e.)>
The specific steps of the S3 are as follows: developing the calculation of the flood frequency of the control section, and deducing the flood design process Q of the control section with the design frequency p p (t) design of flood process Q by using and controlling section p (t) amplifying the corresponding flood process Q upstream after the same method and parameters s ′ i (t) obtaining the corresponding design flood process Q 'of the upstream after the segmentation of the design frequency p' psi (t)；
The specific steps of the S4 are as follows: by adopting upstream corresponding flood process Q' psi (t) reverse river flood inversion to upstream sectionThe design flood process combination of all upstream sections is the river basin design flood, in which,
2. the process segmentation-based watershed design flood calculation method according to claim 1, wherein: the river basin design flood refers to the combination of corresponding floods of the upstream section matched with the control section design flood.
3. The process segmentation-based watershed design flood calculation method according to claim 2, wherein: the control section comprises a river section where important engineering and important hydrologic stations are located.
4. A watershed design flood calculation method based on process segmentation according to claim 3, wherein: in the step S1, the upstream section is positioned upstream of the control section, n water collecting areas are not overlapped, and the sum of the water collecting areas is equal to the river section of the water collecting area of the control section;
river course flood evolution refers to the calculation of the flood process from upstream to downstream, and comprises Ma Sijing methods of a converging curve and a water flow mathematical model.
5. The process segmentation-based watershed design flood calculation method according to claim 1, wherein: in the step S3, the flood frequency calculation of the control section is performed, namely, the flood peak of each frequency p and the flood quantity of different time periods are calculated by adopting the flood data of the control section;
control section design flood process Q p (t) controlling the section flood process Q (t), and enabling the flood peak of the flood process after amplification and the flood quantity of different time periods to be the same as the flood peak of the design frequency p according to the amplification method comprising the same-time ratio and the same-frequency;
upstream corresponding design flood process Q' psi (t) including post-assimilation upstream corresponding flood process typical amplification and upstream corresponding flood process frequency combination amplification.
6. The process segmentation-based watershed design flood calculation method according to claim 1, wherein: in the step S2, a period t is selected according to the characteristics of the river basin and the engineering scale;
in the step S4, inversion of the reverse river course flood refers to the calculation of the flood process from downstream to upstream by using the original forward flood evolution method and parameters.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748703A (en) * | 2009-12-25 | 2010-06-23 | 中国水电顾问集团中南勘测设计研究院 | Flood redistribution method |
| CN111260159A (en) * | 2020-02-26 | 2020-06-09 | 刘祖敏 | Meteorological-hydrological coupling flood measuring and reporting method |
| CN115510631A (en) * | 2022-09-15 | 2022-12-23 | 长江水利委员会水文局 | Flood process line design method and system considering multi-time flood forms |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748703A (en) * | 2009-12-25 | 2010-06-23 | 中国水电顾问集团中南勘测设计研究院 | Flood redistribution method |
| CN111260159A (en) * | 2020-02-26 | 2020-06-09 | 刘祖敏 | Meteorological-hydrological coupling flood measuring and reporting method |
| CN115510631A (en) * | 2022-09-15 | 2022-12-23 | 长江水利委员会水文局 | Flood process line design method and system considering multi-time flood forms |
Non-Patent Citations (6)
| Title |
|---|
| Impact of the Three Gorges Project operation on the water exchange between Dongting Lake and the Yangtze River;Minglong Dai;《International Journal of Sediment Research》;506-514 * |
| Modelling hydrology and water quality processes in the Pengxi River basin of the Three Gorges Reservoir using the soil and water assessment tool;Minglong Dai;《Agricultural Water Management》;24-38 * |
| 三峡水利枢纽设计洪水;郭一兵, 熊明;水利水电快报(第06期);1-7 * |
| 同频率地区组成法在区间洪水计算中的应用;谢蕾;;新疆农业大学学报(第05期);74-79 * |
| 峰量同时控制的区域洪水过程线的计算方法;陈炳荣;;人民黄河(第03期);28-30 * |
| 马斯京根法在下游梯级水库入库洪水计算的应用;张侨;;水利科技与经济(第09期);73-75 * |
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