Baffle for wide rectangular thin-plate weirs such as small-sized basin rainfall runoff field observation cofferdams

A rainfall runoff and watershed technology, applied in marine engineering, measurement devices, barrages/weirs, etc., can solve the problem of consuming a lot of manpower and material resources, and achieve the effects of improving operating efficiency, simple equipment operation, and reasonable material selection.

Inactive Publication Date: 2014-03-26
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term field observation of hydrological and meteorological processes requires a lot of manpower and material resources, so

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
  • Baffle for wide rectangular thin-plate weirs such as small-sized basin rainfall runoff field observation cofferdams
  • Baffle for wide rectangular thin-plate weirs such as small-sized basin rainfall runoff field observation cofferdams

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A small watershed rainfall runoff field observation cofferdam equal-width rectangular thin-walled weir baffle (such as figure 1 figure 2 shown), the weir plate is cut from 5mm thick 301 stainless steel plate, the thickness of the top of the weir plate is 2mm, and the angle between the inclined surface of the weir crest downstream and the weir crest is polished so that it is not less than 45° (such as figure 1 shown).

[0016] figure 2 The dotted line is the thickness of the weir, and the weir plate is fixed on the cofferdam wall. The thickness is determined according to the size of the watershed and the cofferdam, and the size of the weir plate is determined according to the calculation of the maximum flow rate of the watershed. figure 2 The rectangle formed by the weir height and weir mouth is the exposed part of the weir plate, and the rest is buried inside the cofferdam.

[0017] The weir plate material of the present invention is hardened through mechanical pr...

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
widthaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of small-sized staff gauge station construction, and particularly relates to a baffle for wide rectangular thin-plate weirs such as small-sized basin rainfall runoff field observation cofferdams. According to the baffle, a 5mm-thick 301 stainless steel sheet material after mechanical hardening machining is used for manufacturing a weir plate, the top of the plate is 2mm thick and the baffle is installed on a wide rectangular thin-plate weir and used for small-sized basin rainfall runoff field observation. The machining precision and the abrasion degree of the upper-stream weir peripheral angle of the weir plate have great influences on runoff observation precision. The baffle can greatly reduce the impact abrasion to the weir plate from small gravel, silt and other impurities, overcome the defects that a traditional cofferdam baffle is prone to being rusted and not resistant to corrosion or impact, guarantee years of long-time sequence continuous observation of a monitoring station, improve the cofferdam repair time intervals and greatly lower the expense of scientific research funds.

Description

technical field [0001] The invention belongs to the technical field of construction of small-scale hydrological stations, in particular to a rectangular thin-walled weir baffle such as a cofferdam for field observation of rainfall runoff in a small watershed. Background technique [0002] Climate and environment changes cause changes in rainfall and runoff in the basin, which makes the evolution of the hydrological situation in the basin increasingly significant, and then a series of regional water resource shortages and floods and droughts appear. Therefore, it is urgent to deeply understand the response relationship between the climate and environmental factors of the basin and the hydrological process of the basin, so as to improve the level of water resources management and disaster forecasting, and ensure the sustainable use of water resources. Long-term field observation of hydrological and meteorological processes requires a lot of manpower and material resources, so....

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): E02B8/04G01C13/00
Inventor 崔亮李永平张俊龙
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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