Measuring device and measuring method for wind-drift sand of blown sand drifting layer

Abstract

The invention relates to a measuring device and a measuring method for wind-drift sand of a blown sand drifting layer. The measuring device (1) provided by the invention is used for measuring the wind-drift sand of the blown sand drifting layer. The measuring device (1) comprises a plurality of collecting parts (3); collecting cavities are formed in all the collecting parts (3); inlets are arranged on all the collecting cavities; the inlets are located on the upper surfaces of the collecting parts (3); and the inlets are same in equivalent lengths and are different in areas. The invention also provides the method for measuring the wind-drift sand of the blown sand drifting layer. According to the method, the wind-drift sand of the blown sand drifting layer is obtained by utilizing a leastsquare fitting equation set.

Description

technical field [0001] The invention relates to a device and a measuring method capable of measuring the amount of sand transported in a blown-sand creeping layer. The measuring device and the measuring method are especially suitable for field blown-sand observation or wind tunnel experiments. Background technique [0002] China is one of the countries with the most severe wind and sand hazards in the world. In order to effectively prevent and control wind-sand disasters, it is necessary to study the basic laws of wind-sand movement. [0003] The movement of sand particles in wind-blown sand flow includes creep, jump and suspension. Among them, creep is the movement form of sand particles rolling or sliding against the sand bed surface, leap is the movement form of sand particles falling to the sand bed surface under the action of gravity after taking off from the sand bed surface, and suspension is the movement form of sand particles A form of movement that hangs in the a...

AI Technical Summary

Problems solved by technology

Failure to eliminate the influence of the sand in the transition layer will cause the research results to fail to reflect the objective situation

Therefore, the accurate measurement of the sediment load in the creeping layer has become the focus of attention in the aeolian academic circles, but there is no special measuring instrument and method for the sediment load in the creeping layer.

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