Method for acquiring reservoir inflow design flood of hydraulic and hydro-power engineering

A technology for designing floods, water conservancy and hydropower, applied in calculation, electrical digital data processing, and special data processing applications, etc., can solve problems such as large differences in main and tributary floods, large differences in padding, and inability to calculate storage design floods, etc. Achieve theoretically rigorous results

Inactive Publication Date: 2016-03-09
GUIZHOU SURVEY & DESIGN RES INST FOR WATER RESOURCES & HYDROPOWER
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Problems solved by technology

[0037] Therefore, the shortcomings of the traditional method: (1) The underlying surface of the Guizhou watershed is quite different, and the flood of the main stream and the tributaries is quite different. The conventional flood calculation method for storage design has certain difficulties in actual operation; (2) "Guizhou Province The parameters in the above formulas in Practical Handbook of Storm Flood Calculation (Revised Edition) can reflect the different parameters of the underlying surface of the main and tributary of the river basin, and can only calculate the design flood of the dam site, not the design flood of the reservoir

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  • Method for acquiring reservoir inflow design flood of hydraulic and hydro-power engineering
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  • Method for acquiring reservoir inflow design flood of hydraulic and hydro-power engineering

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Embodiment

[0057] In this embodiment, a certain water supply reservoir is used as an example to illustrate the calculation of the design flood at the dam site and the design flood entering the reservoir with frequency P=0.1%. The specific implementation process is as follows:

[0058] 1. Engineering data:

[0059] It is known that the catchment area of ​​a river basin is 82.0km 2 ; The designed 24-h rainstorm average is 100mm, Cv=0.5, Cs / Cv=3.5; the topography in the watershed is dominated by hills, with moderate or partial strong karst, and poor vegetation, so the confluence area is designated as I1 area (central Guizhou area ), rainstorm attenuation index n 3 =0.80, Δn 3 It is zone IV.

[0060] The catchment area of ​​the basin above the dam site is 82.0km 2 , the length of the main channel above the dam site is 16.7km, and the weighted average gradient of the main channel above the dam site is 0.0137; the catchment area of ​​the watershed above the backwater end section is 59.0km ...

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Abstract

The invention discloses a method for acquiring reservoir inflow design flood of hydraulic and hydro-power engineering. The method is implemented according to the following steps of: a step 1 of acquiring drainage basin characteristic values; a step 2 of acquiring calculation parameters; a step 3 of calculating the reservoir inflow design flood; and a step 4 of calculating a reservoir inflow design flood hydrograph. The method for acquiring the reservoir inflow design flood of hydraulic and hydro-power engineering, which is disclosed by the invention, comprehensively considers factors of generating the reservoir inflow flood due to rainfall at a backwater end, around a reservoir area and in the reservoir area, and the method and a theory are strict. As far as the existing design flood calculation method and theory of the hydraulic and hydro-power engineering in Guizhou province, a formula in Guizhou Province Rainstorm Flood Calculation Practical Handbook, which is widely used, is sufficiently utilized and the method disclosed by the invention fills up the gap of the reservoir inflow design flood calculation method and theory.

Description

technical field [0001] The invention relates to a method for obtaining design floods for storage of water conservancy and hydropower projects, in particular to a method for obtaining design floods for storage of water conservancy and hydropower projects under the climate and geographical environment in Guizhou, and belongs to the technical field of water conservancy and hydropower projects. Background technique [0002] The flood at the dam site refers to the flood that reaches the section of the dam site. The inflow flood includes two parts: the inflow section flood and the inflow interval flood. The flood in the reservoir section refers to the flow measurement section of the main and tributary river channel hydrometric station near the backwater end of the reservoir, or the flood above a certain calculation section. Floods in storage intervals can be further divided into land surface floods and reservoir surface floods. The land surface flood refers to the flood generate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 韩元元申献平
Owner GUIZHOU SURVEY & DESIGN RES INST FOR WATER RESOURCES & HYDROPOWER
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