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首页> 外文期刊>African Journal of Biotechnology >Estimation of suspended sediment concentration by acoustic equations for soil sediment
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Estimation of suspended sediment concentration by acoustic equations for soil sediment

机译：利用声学方程估算土壤泥沙中悬浮物的浓度

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The acoustic backscattering systems, ABS, for sediment measurement are based on the?determining of the backscattering and attenuation properties of the particles in suspension. The relevant acoustic quantities are the form function,?f, which describes the backscattering characteristics, and the normalized total scattering cross-section, χ, which describes the attenuating characteristics of the particles in suspension. Formulations are required for these parameters of suspension sediment particles with size and acoustic frequency.?Several studies have been conducted to determine the concentration of sediments such as glass spheres or sand. However, the acoustic properties of natural sediments vary and depend on many parameters such as particle size, shape, mineralogy and distribution of those parameters in sample.? Therefore,?this study was conducted to determine the possibility of soil sediment concentration with the?f?and χ equations, which were obtained for glass spheres and sandy sediments under laboratory and river conditions.? The results show that the acoustic method, especially with glass scattering equation, works fairly well to calculate soil sediment for low concentration range at laboratory and river conditions.
机译：用于沉积物测量的声后向散射系统ABS基于确定悬浮液中颗粒的后向散射和衰减特性。相关的声学量是描述后向散射特性的形式函数Δf，以及描述悬浮液中颗粒的衰减特性的归一化总散射截面χ。对于具有尺寸和声频的悬浮沉积物颗粒的这些参数，需要制定配方。已经进行了数项研究，以确定玻璃球或沙等沉积物的浓度。但是，天然沉积物的声学特性会有所不同，并且取决于许多参数，例如颗粒大小，形状，矿物学以及这些参数在样品中的分布。因此，本研究旨在通过f和χ方程确定土壤沉积物浓度的可能性，这些方程是在实验室和河流条件下针对玻璃球和沙质沉积物获得的。结果表明，声学方法，特别是带有玻璃散射方程的方法，对于在实验室和河流条件下低浓度范围内的土壤沉积物计算非常有效。

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