A Kinetic Wave Infiltration Method for Quantitatively Describing Preferential Flow Phenomena

A quantitative description and preferential flow technology, applied in the field of soil hydrology, can solve the problems of ineffective description of preferential flow phenomenon, overly generalized soil water simulation, etc.

Active Publication Date: 2021-03-02
HOHAI UNIV
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies of the prior art, the present invention proposes a kinematic wave infiltration method that can quantitatively describe the phenomenon of preferential flow, and solves the technical problem that the soil water simulation in the prior art is too generalized and cannot effectively describe the phenomenon of preferential flow

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 Kinetic Wave Infiltration Method for Quantitatively Describing Preferential Flow Phenomena
  • A Kinetic Wave Infiltration Method for Quantitatively Describing Preferential Flow Phenomena
  • A Kinetic Wave Infiltration Method for Quantitatively Describing Preferential Flow Phenomena

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0061] Below in conjunction with example the present invention will be further described.

[0062] Existing southern certain hillside that vegetation covers is better, according to the method of the present invention, the computing method of this infiltration method is as follows:

[0063] (1) Place a double-ring infiltration instrument in the research area, put a bright blue dye tracer in the two mugs to ensure the stability of the water level in the inner and outer rings, and read the change of the dye in the mugs every minute, according to Darcy's law Calculate Kon p =230mm / h;

[0064] (2) After the dyeing agent has completely infiltrated, equilibrate for 15 minute...

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 kinematic wave infiltration method capable of quantitatively describing preferential flow phenomena, and belongs to the field of soil hydrology. In this method, the soil moisture profile is divided into the preferential flow region and the matrix flow region, and an infiltration model is proposed in which the preferential flow region and the matrix flow region are bidirectionally coupled through the free water surface according to the kinetic wave infiltration theory. The infiltration method provided by the invention can reflect the change of wetting front and the mutual feed of soil moisture between preferential flow and matrix flow, solves the problem that it is difficult to quantitatively describe the phenomenon of preferential flow in the current infiltration method, and has strong engineering significance.

Description

technical field [0001] The invention relates to a kinematic wave infiltration method capable of quantitatively describing preferential flow phenomena, and belongs to the field of soil hydrology. Background technique [0002] Preferential flow refers to the phenomenon of rapid passage through the soil by bypassing the soil matrix through channels such as voids, wormholes, and plant roots. Preferential flow exists widely in nature and has an important impact on soil hydrological processes and ecological environment. However, it is difficult to simulate the preferential flow because of its complex movement law and does not follow the soil water movement law described by Darcy's law. [0003] At present, the understanding of the preferential flow phenomenon mainly stays in the conceptual description, such as fast infiltration speed and low resistance, etc., but there is a lack of simulation of its infiltration process. General infiltration theories such as kinematic wave infil...

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): G01N15/08
Inventor 梁忠民李大洋周艳李彬权付宇鹏杨钊华
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