Calculation method for carrying out inverse estimation on Three Gorges Reservoir interval inflow process

Abstract

The invention discloses a calculation method for carrying out inverse estimation on a Three Gorges Reservoir interval inflow process. The calculation method comprises the following steps of: S1: collecting data including an entrance and exit boundary water level discharge, main stream and tributary river sections in a reservoir interval and the drainage area of each small tributary in the reservoir interval; S2: establishing a one-dimensional unsteady flow hydrodynamic model of the main stream and tributary rivers of the Three Gorges Reservoir; S3: firstly, independently giving a fixed hypothetical value to each afflux small tributary daily average discharge of the reservoir interval, then, adopting an established hydrodynamic model to carry out reservoir interval water flow transportation calculation, and distributing a difference value between a daily outflow discharge process calculation value and a practical measurement value into each afflux small tributary of the reservoir interval so as to obtain the inflow process value of each small tributary of the interval; and S4: carrying out manual correction on parts of moment values, which are obtained by calculation, in the inflow process of each small tributary of the interval. By use of the calculation method for carrying out inverse estimation on the Three Gorges Reservoir interval inflow process, the problems of the total amount, the process and the space distribution of interval inflow can be simultaneously solved, calculation accuracy is high, and a technical support can be provided for reservoir scheduling.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a calculation method for inverting the inflow process of the Three Gorges reservoir interval. Background technique [0002] The reservoir area of ​​the Three Gorges Reservoir is more than 700km long, and there are many interval tributaries. Except for the Jialing River and the Wujiang River, there are still large interval flows. Based on the measured data of the main stream Zhutuo Station, the tributary Jialing River Beibei Station and the tributary Wulong Wulong Station of the main branch inflow control station of the Three Gorges Reservoir, the percentage of the interval flow of the Three Gorges Reservoir area to the outlet flow of the Yichang Station: 12.2 for the series in the 1960s %; 13.3% for the series in the 1990s; 9.1% of the export traffic at Huanglingmiao Station from 2003 to 2013. Interval flow tends to flow in concentratedly, and its impact ca...

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Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a calculation method for inverting the inflow process of the Three Gorges Reservoir interval, which can solve the problem of low calculation accuracy of the total inflow, process and spatial distribution of the interval in the prior art

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