System for measuring wind erosion volume in wind tunnel

Abstract

The invention relates to a system for measuring wind erosion volume in a wind tunnel. The system comprises a group of height measurement limiting blocks which are in close contact with tunnel walls on two sides of the wind tunnel, a group of sand bed height limiting blocks which are in close contact with the inner sides of the height measurement limiting blocks, a longitude and latitude grid and distance measuring equipment. The tops of the height measurement limiting blocks are connected together through the longitude and latitude grid. One end of the distance measuring equipment is vertically placed on the longitude and latitude grid, and the other end of the distance measuring equipment is in contact with the surface of the sand covering layer. The device and the method have the characteristics of nondestructive measurement, accurate data and large measurement range, can be used for measuring the wind erosion product characteristics and the wind erosion product amount of a wind prevention and sand fixation material in different wind fields in a wind tunnel in a wind and sand environment, and can also be used for measuring the wind erosion product characteristics in a field small-scale region or range.

Description

technical field [0001] The invention relates to the technical field of ecological environment measurement, in particular to a system for measuring wind erosion volume in a wind tunnel. Background technique [0002] In the arid and semi-arid wind-sand region, the dynamic changes of sand land caused by wind-sand activities and the erosion and burial of quicksand are relatively important geomorphic activities. Therefore, desertification monitoring and wind-eroded accumulation characteristics are one of the important tasks in the region or on a large scale. . In the field, it is particularly important to measure the characteristics of wind erosion accumulation for windbreak and sand fixation measures. Through the measurement of wind erosion accumulation characteristics, it is a very important work and element to evaluate the ecological effects and control measures of wind and sand disasters. In the indoor wind tunnel, all kinds of sand barriers, wind-proof and sand-fixing measu...

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Problems solved by technology

On the one hand, the wind tunnel environment is small and the observation scale is limited, so the above methods are not applicable; on the other hand, how to ensure the accuracy of the measurement in the wind tunnel, especially in the process of measuring the characteristics of wind erosion How to keep the prototype without human disturbance and damage during the measurement process is one of the difficult problems faced by researchers.

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