Method and device for measuring soil wind erosion

A measurement method and soil technology, applied in measurement devices, aerodynamic tests, testing of machine/structural components, etc., can solve the problems of inapplicability of feng shui erosion interlaced areas, inability to distinguish soil wind erosion and water erosion, etc., to increase the applicability , the effect of simplifying the calculation method

Active Publication Date: 2018-01-12
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

However, these methods are often unable to distinguish between soil wind erosion and water erosion, especially in the wind-water erosion alternate zone

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  • Method and device for measuring soil wind erosion
  • Method and device for measuring soil wind erosion
  • Method and device for measuring soil wind erosion

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Embodiment Construction

[0032] In order to explain the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and drawings. Similar components in the drawings are denoted by the same reference numerals. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0033] The method for measuring soil wind erosion according to the present invention mainly includes three steps: determining a circular measurement area according to the local topography, and selecting several measurement points on the circumference; taking the measurement point as the center, 0.5m on both sides of the measurement point along the circumferential direction Set up a sand collection device respectively. One of the sand collection devices has an opening toward the center of the circle to collect wind erosion that leaves the measurement...

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Abstract

The invention discloses a soil wind erosion measurement method, comprising the following steps: determining a circular measurement area, selecting several measurement points on the circumference; The sand collecting device in the center of the circle collects the wind erosion that leaves and enters the measurement area respectively; calculates the sand flux Qin and Qout that enters and leaves the measurement area, and the difference between the two is the single-width sand transport rate Q of the measurement area, which is The single-width sand transport rate Q is substituted into the following formula: A=Q×2πr÷πr2 to obtain the amount of soil wind erosion. The present invention does not need to keep the wind direction stable in the same wind erosion event, and does not need to calculate the variation of the sediment load with the length and define the non-erosive boundary, which increases the applicability of the present invention, simplifies the calculation method, and also improves the accuracy of the measurement. accuracy. The invention also discloses a soil wind erosion measuring device, which has high accuracy.

Description

Technical field [0001] The invention relates to the technical field of wind erosion monitoring, in particular to a soil wind erosion measurement method and device. Background technique [0002] Soil erosion leads to land degradation. Scientific measurement is an important basis for the study of soil erosion laws and the planning and implementation of water and soil conservation measures. As early as 1882, German scientist Ewald Wollny invented the runoff plot method to quantitatively measure water erosion. In the 1910s, American scientists represented by D. Miller began to apply and continuously improve this method, making it a standard measurement method of water erosion, and it has been widely used worldwide. In contrast, the quantitative research on wind erosion is progressing slowly, and its field measurement methods have not been effectively resolved. [0003] At present, the field wind erosion observation instruments are relatively mature. The two most common sand collecto...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/00G01M9/06
Inventor 刘宝元刘刚高晓飞郭乾坤刘瑛娜杨扬邹学勇海春兴姜洪涛杜鹏飞
Owner BEIJING NORMAL UNIVERSITY
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