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

Control node locating protecting method of undercutting channel segment water level lowering amplitude

A technology of node control and undercutting, which is applied in the direction of river regulation and climate change adaptation, can solve the problems of easy leakage, inconvenient application, and increased economic costs, and achieve the effect of good water level

Inactive Publication Date: 2014-02-19
WUHAN UNIV
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing studies have directly used the sudden change in the undulation degree of the deep-flung longitudinal section of the channel or the sudden change in the gradient of the water surface line in the dry season as the position of the node reach, or used the drop along the water surface line in the dry season to screen the position of the node reach, and applied it in engineering practice It is extremely inconvenient, and it is easy to miss or wrongly select more important nodes, which is not conducive to the realization of the protection engineering effect, and will also increase the economic cost

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] According to the change rule of the relationship between water level and flow in the scouring section, and by means of a two-dimensional water flow mathematical model in the river channel plane, the present invention can more accurately locate the key node section where the deformation of the riverbed has a greater influence on the drop in water level, and determine the type of project to be adopted. Those skilled in the art can use computer software technology to realize automatic operation of the technical solution of the present invention. The technical solution of the present invention will be described in detail below in conjunction with the drawings and embodiments.

[0029] There are two scouring and downcutting modes of side erosion and deep erosion in natural river channels, both of which cause the water level to drop, and the protective parts of the two node river sections should be different. The side erosion mainly occurs in the parts higher than the deep wa...

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 provides a control node locating protecting method of undercutting channel segment water level lowering amplitude. The method comprises the steps that a lateral erosion zone and a deep erosion zone are divided; a target channel section is subjected to meshing, a plane two-dimension water flow mathematic model is established, parameter calibration and verification are carried out; a protection project is generalized to the plane two-dimension water flow mathematic model, the arranging zone and the width of the protecting project are determined; local gradient amplification and upstream water level amplification corresponding to each working condition are obtained, mesh sequences are analyzed respectively; key nodes or other nodes which have obvious influence are selected, for lateral erosion nodes, a hidden closure dam and a beach protection part are arranged on a river branch or a bottomland, and for deep erosion nodes, a bottom protecting band or a hidden closure dam are placed in a main groove. According to the method, nodes are divided into the lateral erosion nodes and the deep erosion nodes, protection part difference of the nodes in different types is provided, by comparing the efficiency of a local channel segment arranging protecting project, the positions of the nodes are accurately located, and the optimum efficiency of the protecting project is guaranteed powerfully.

Description

technical field [0001] The invention relates to the technical field of water conservancy and water transport engineering, and especially aims at the prevention and control of water level drop during the scouring process of the downstream river bed of the reservoir, and proposes a positioning protection method for the key node river section that suppresses the water level drop. Background technique [0002] River bed erosion is common in the lower reaches of the reservoir, and the downcut of the river bed caused a significant drop in the middle-low water level, resulting in a decrease in the water depth of the navigation channel and a decrease in the groundwater level on both sides of the reservoir, which is not conducive to shipping, coastal water intake, and industrial and agricultural production. It is an important means to reduce the hazards of water level drop by selecting key node positions that control the water level in the lower cut interval, and implementing protecti...

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 Applications(China)
IPC IPC(8): E02B3/02
CPCY02A10/11
Inventor 孙昭华韩剑桥曹绮欣
Owner WUHAN 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