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Soil wind erosion measuring method and device

A measurement method and measurement device technology, which is applied in the direction of measurement device, aerodynamic test, machine/structural component test, etc., can solve the problems that soil wind erosion and water erosion cannot be distinguished, and the interlaced zone of wind and water erosion is not applicable, so as to increase the application Sexuality, the effect of simplifying the calculation method

Active Publication Date: 2015-06-03
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

Method used

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  • Soil wind erosion measuring method and device
  • Soil wind erosion measuring method and device
  • Soil wind erosion measuring method and device

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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 measuring method. The method comprises the following steps: determining a circular measuring area and selecting a plurality of measuring points on circumference; respectively distributing one sand collection device of which opening faces the circle center and one sand collecting device of which opening is far away from the circle center on both sides of the measuring points along the circumference direction and respectively collecting wind erosion matters leaving and going into the measuring area; calculating sand transport fluxes Qin and Qout going into and leaving the measuring area, wherein the different value of the Qin and Qout is the single width sand transport rate Q of the measuring area, and the single width sand transport rate Q is substituted into a formula of A=Q*2pir / pir<2> to obtain soil wind erosion amount. According to the soil wind erosion measuring method, the wind direction in the same wind erosion incident does not need to keep stable, change of sand transport amount along with length does not need to be calculated, non-erosion boundary does not need to be defined, the applicability is increased, the calculating method is simplified, and the measuring accuracy is improved simultaneously. The invention also discloses a soil wind erosion measuring device. The soil wind erosion measuring device is high in 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 soil and water 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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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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