A method for estimating the average free water storage capacity of a watershed by flow hydrographs

A technology of water storage capacity and process line, which is applied in calculation, instrumentation, electrical digital data processing, etc., can solve the problems of model parameter calibration and other problems, reduce the probability of occurrence of different parameters with the same effect, improve calculation efficiency, and SM value reasonably accurate effect

Active Publication Date: 2018-12-28
HOHAI UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a method for estimating the average free water storage capacity of the watershed through the flow process line, and solve the problem of various model parameter calibrations in the construction of the Xin'anjiang model in the existing method question

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for estimating the average free water storage capacity of a watershed by flow hydrographs
  • A method for estimating the average free water storage capacity of a watershed by flow hydrographs
  • A method for estimating the average free water storage capacity of a watershed by flow hydrographs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0046] Such as figure 1 As shown, the present invention proposes a method for estimating the average free water storage capacity of a watershed through flow hydrographs, wherein the concept of free water storage reservoir is introduced from hillside hydrology and is used to divide the surface, soil and underground Runoff, that is, the surface layer with relatively loose soil is regarded as a reservoir with a certain capacity, and its capacity is the average free water storage capacity SM of the basin. The criterion for judging whether the storage is full is whether there is surface water runoff, that is, whether the formula RI=KI×SM holds true. In this regard, the method gives an estimation method, which specifically includes the following steps:

[0047] S1. In the measured flow data of the outlet station of the river basin, classify flood events; preferably,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for estimating drainage basin average free water storage capacity through flow hydrograph. The method comprises the steps of dividing a session flood in actual measurement flow data of a drainage basin outlet station; dividing a surface runoff, an interflow and a groundwater runoff on the session flood hydrograph, calculating runoff depths of the surface runoff, the interflow and the groundwater runoff and obtaining the total runoff depth; calculating the net rainfall depth of the session flood; calculating a free water storage reservoir full storage area proportion in full storage runoff generation; calculating an outflow coefficient of the interflow through combination of a linear constraint relation between the outflow coefficients of the interflow and the groundwater runoff according to a proportional relation among the runoff depths of the surface runoff, the interflow and the groundwater runoff; and carrying out estimation to obtain a value of the drainage basin average free water storage capacity according to the outflow coefficient of the interflow and the free water storage reservoir full storage area proportion in full storage runoff generation. According to the method, the number of the parameters needing to be set is reduced, and the probability that same effect of different parameters occurs is reduced.

Description

technical field [0001] The invention relates to a method for estimating the average free water storage capacity of a river basin through flow process lines, and belongs to the technical field of hydrological analysis. Background technique [0002] In the early 1980s, a research group led by Professor Zhao Renjun of Hohai University proposed the Xin'an River model with two water sources. In the mid-1980s, the concept of free water storage reservoirs in hillside hydrology was introduced, and the Xin'anjiang model of three water sources was proposed, using free water storage reservoirs to divide runoff into surface, soil and underground runoff. This makes the capacity (SM) of the free water storage reservoir determine the proportion of runoff components. If SM is large, there will be more midflow and underground runoff, slower confluence and retreat, and the calculated runoff hydrograph at the outlet of the basin will be shorter If the SM is smaller, the surface water runoff w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG16Z99/00Y02A10/40
Inventor 姚成童冰星李致家黄小祥
Owner HOHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap