Unlock instant, AI-driven research and patent intelligence for your innovation.

A gis-based method for establishing a non-parametric river network model

A technology for river network confluence and establishment method, applied in electrical digital data processing, special data processing applications, instruments, etc. Comprehensive versatility, strong applicability, and the effect of reducing the number of parameters

Inactive Publication Date: 2018-08-14
SICHUAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the physical meanings of K and n in the model are not clear, and there is no obvious law, and the uncertainty of calibration parameters has a great influence

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 gis-based method for establishing a non-parametric river network model
  • A gis-based method for establishing a non-parametric river network model
  • A gis-based method for establishing a non-parametric river network model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0061] Embodiment: the model of the present invention comprises the following building steps:

[0062] ①Establish the river network storage and discharge equation

[0063] The water storage of the river network is similar to the reservoir, and its water storage capacity is

[0064]

[0065] Where: W t Water storage for the river network (m 3 ); L w is the total length of the river network (m); is the average river width of the river network (m); is the average water depth of the river network (m);

[0066] The water level and flow relationship of the outlet section adopts the Manning formula:

[0067]

[0068] In the formula: Q t is the outlet cross-section flow rate (m 3 / s); n is the roughness; A is the cross-sectional area of ​​the outlet (m 2 ); R is the hydraulic radius of the outlet section (m); χ is the wetted area of ​​the outlet section (m); J is the gradient of the outlet section;

[0069] Assuming that the outlet section of the watershed is a wide ...

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 non-parameter river network confluence model based on GIS, which belongs to the technical field of river basin confluence models. The present invention obtains the relational expression between the cross-section river width and the average river width through the statistics of the watershed outlet when the parameters are quantified. The invention combines the GIS technology developed rapidly in recent years to realize the non-parameter calculation model of river network confluence and reduce the number of parameters in the confluence calculation. The calibration parameters of the present invention are clear, so that they are not affected by the calibration parameters to cause ambiguity. The present invention has strong applicability and comprehensive versatility, so it can be widely promoted.

Description

technical field [0001] The invention belongs to the technical field of watershed confluence models, and in particular relates to a method for establishing a GIS-based non-parameter river network confluence model. Background technique [0002] Watershed confluence is the process of studying how the surface runoff, soil inflow and subsurface runoff of a watershed converge to the outlet section of the watershed. According to the regulation and storage function of the watershed and the simulated structure, it is generally divided into two parts: slope confluence and river network confluence. The process of the sloping water flowing into the river channel through the slope confluence process and the water falling on the river channel surface is converged to the outlet section of the river basin through the regulation and storage of the river channel, which is called the river network confluence. [0003] In the application of hydrology, most problems do not insist on mastering t...

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
CPCG06F30/367
Inventor 梁煜峰周宏伟周家文曹畑王子豪林柯柯
Owner SICHUAN UNIV