A Method and System for Analytical Derivation of Design Flood Process Maintaining Typical Flood Form
A typical flood process and design flood technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as large workload and arbitrariness, manual correction, and inconsistent magnification.
Active Publication Date: 2017-06-16
HOHAI UNIV
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The second defect is that due to the inconsistency of the magnification ratio at the places where different durations connect, discontinuity occurs at the junction after magnification. At this time, it is necessary to manually correct the discontinuity point, and in order to meet the design requirements of the large amount of time, it often needs to be repeated many times Modify trial calculation, heavy workload and arbitrariness
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[0060] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.
[0061] The new method of calculating the design flood hydrograph is based on the principle of ensuring the similarity between the design flood and the typical flood as much as possible, and establishes the design flood amplification model. The discontinuity problem at the junction of different control periods is proposed, and the amplification formula of different control periods is deduced based on the principle of water balance. The invention avoids the arbitrariness of manual correction, and ensures the morphological characteristics of the typical flood proc...
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The invention discloses a method and a system for analyzing and researching a designed flood hydrograph for keeping a typical flood form, wherein the method comprises the following steps: calculating uplift values at different time periods according to each parameter of typical flood and design standards; calculating the uplift value of junction according to the uplift values at different time periods by adopting a discontinuous modification strategy; amplifying the typical flood hygrograph according to the uplift value of each timing sequence. Compared with a conventional same-frequency amplifying method, the method disclosed by the invention is relatively small in designed flood and typical flood form deformation and relatively standard in discontinuous processing at multiple time periods. Compared with an existing amplifying method based on an optimization algorithm, the analyzing method is relatively simple and relatively high in efficiency.
Description
technical field [0001] The invention relates to the field of water conservancy engineering, in particular to a method for analyzing and deriving a design flood process that maintains a typical flood form. Background technique [0002] The design of the flood process line is the basic basis for flood control planning and flood control engineering design. The current procedure for drafting the design flood process line method is to first calculate the flood peak and volume frequency, analyze the distribution function (or frequency curve) of the flood peak discharge and the flood volume in the design watershed, and obtain the design peak discharge value and the design flood discharge value that meet the design standards respectively. Then select the typical flood according to the characteristics of the flood, and consider the hydraulic design requirements, select one or several features that have the greatest impact on the flood control consequences, and use them as controls to...
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IPC IPC(8): G06F17/50
CPCY02A10/40
Inventor 钟平安张阳张宇陈娟吴业楠
Owner HOHAI UNIV