Experimental device and method for simulating transition mechanism of transient flow to steady flow in unsaturated zone

A test device, steady-state flow technology, applied in measurement devices, analysis of suspensions and porous materials, instruments, etc., can solve the problems of cumbersome models, difficulty in flexibly controlling infiltration conditions, and unintuitive indoor simulation, and achieve operability. High, overcome the effect of unsustainable water supply

Active Publication Date: 2020-10-30
CHANGAN UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of cumbersome theoretical models, unintuitive indoor simulation, and difficulty in flexibly controlling infiltration conditions, the present invention provides a test device and simulation method for simulating the transition mechanism of transient flow to steady flow in unsaturated zones

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
  • Experimental device and method for simulating transition mechanism of transient flow to steady flow in unsaturated zone
  • Experimental device and method for simulating transition mechanism of transient flow to steady flow in unsaturated zone
  • Experimental device and method for simulating transition mechanism of transient flow to steady flow in unsaturated zone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] The flow of water in soil is affected by soil type, particle size characteristics, pore size and distribution, etc. There are countless studies on the influence of these factors on water flow, and a simple and clear explanation cannot be given. The present invention considers that, no matter there are various control factors, the flow of water in soil can be simplified as the transfer of water in a container that can accommodate a certain amount of water, and this transfer changes from wave transfer to In the end, the entire transfer system presents a stable state that conforms to the laws of mechanics, which is completely consistent with the flow characteristics of water in unsaturated soil, specifically in three stages (assuming no surface runoff is formed and all water infiltrates ), the first stage is the infiltration stage, at this ...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a test device and method for simulating the transition mechanism of transient flow in unsaturated zone to steady flow, which comprises an open glass bottle for simulating soil and a water supply device arranged above it. The bottom of the water supply device is provided with The outlet is facing the water outlet pipe on the top of the glass bottle, and the flow rate control valve is set on the water outlet pipe; the glass bottle water outlet is set at the bottom of the glass bottle, and the water outlet of the glass bottle is provided with a rubber stopper; there is also a drain pipe and water inlet pipe at the bottom of the water supply device. The top of the pipe extends into the cavity of the water supply device, and the water inlet pipe is connected between the sluice and the water supply device; the flow of water in unsaturated soil is generalized as a one-dimensional flow of water in vertically arranged open-hole containers under the action of gravity Flow model, using the principle of water balance and Bernoulli equation, for hydraulic calculation and derivation, the relationship between flow velocity and water level of any container unit at any time is obtained, and the model is verified by experiments. The results are in line with theoretical assumptions and unsaturated Soil seepage law.

Description

technical field [0001] The invention relates to the technical fields of hydrogeology and engineering geology, in particular to a test device and method for simulating the transition mechanism of transient flow to steady flow in an unsaturated zone. Background technique [0002] The unsaturated zone is the necessary channel for groundwater to exchange with atmospheric precipitation and surface water, and is the link connecting surface water and groundwater. The unsaturated zone plays a pivotal role in groundwater science, environmental science, agriculture, forestry, water conservancy projects, and geological disaster prevention In addition, in the arid and semi-arid regions of Northwest my country, desertification and soil erosion are serious, and the ecological environment is extremely fragile. Therefore, the research on the law of water migration in the unsaturated zone is carried out, the quantitative evaluation of groundwater resources in this area, and the ecological effe...

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): G01N13/04G01N15/08
CPCG01N13/04G01N15/08
Inventor 王宇郭剑江睿君张亚国付昱凯张辉范江文李强沈月强乔志甜
Owner CHANGAN 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