Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Field observation-based construction method of sediment resuspension model

A construction method, sediment technology, applied in the field of water environment observation

Inactive Publication Date: 2018-03-16
HOHAI UNIV
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the limitations of these formulas, not only field observations but also formula and parameter adjustments are required for actual sediment resuspension calculations

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
  • Field observation-based construction method of sediment resuspension model
  • Field observation-based construction method of sediment resuspension model
  • Field observation-based construction method of sediment resuspension model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0080] The present invention will be further described below in conjunction with the accompanying drawings.

[0081] Such as figure 1 As shown, a sediment resuspension model construction method based on field observations includes the following steps:

[0082] Step 1: Obtain observational data reflecting water body sediment and hydrodynamic characteristics and perform data preprocessing;

[0083] Step 2: Calculation of high-frequency sediment concentration data and wave characteristic parameters;

[0084] Step 3: Calculation of bottom shear stress and determination of critical shear stress;

[0085] Step 4: Determination of sedimentation velocity under different concentrations;

[0086] Step 5: Sediment resuspension flux simulation prediction model construction.

[0087] The processing process of the method of the embodiment of the present invention will be described below by taking the observation data taken from a large shallow lake as an example.

[0088] Step 1: Use A...

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 field observation-based construction method of a sediment resuspension model. The method includes the main steps of: acquiring observation data reflecting water body sediments and hydrodynamic features, and carrying out data preprocessing; calculating high-frequency sediment concentration data and wave feature parameters; calculating bottom shear stress, and determining critical shear stress; determining sediment settlement speed under different concentrations; and constructing the sediment resuspension flux simulation prediction model. Mainly used instruments includemeasurement equipment measuring water body hydrodynamics and silt, and field observation and a laboratory experiment result need to be combined. According to the method, an observation process is combined, the sediment resuspension prediction model which is acquired by field data and closer to reality is established, and the defect that previously a method of systematically establishing a sediment resuspension prediction model of accurate prediction does not exist is overcome. The method of the invention is simple, is convenient to implement, and provides a basis for the scientifically and reasonably established model.

Description

technical field [0001] The invention relates to a method for constructing a sediment resuspension model based on field observation, and belongs to the technical field of water environment observation. Background technique [0002] Resuspended sediment has received more and more attention in the past few decades, and its research is very important. As an important source of endogenous pollutants, the impact of sediment resuspended on the water environment can sometimes exceed the long-term external load. Suspended solids will affect the cycle of nutrients in lakes and indirectly lead to eutrophication of water bodies. Suspended solids can also affect light attenuation, organic pollutants, and even increase the content of toxic heavy metals in water bodies. Therefore, it is necessary to understand the dynamic mechanism of sediment resuspension. [0003] The basic processes (eg, flocculation, sedimentation, erosion) of cohesive sediment resuspension have been studied by many ...

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
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/06
Inventor 姜龙李一平翁晟琳黄冬菁杜薇魏进布旻晟许益新赖秋英罗凡
Owner HOHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com