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常规测定地表糙度的方法既费人力又较昂贵。本文作者发明了一种滚轴式链条的方法来测定地表糙度。由此法取得的糙度位与由并联针状糙度计测得的糙度位具有很高的相关性。结果证明了链条法对地表糙度的敏感性。文中还建立了由链条法测定糙度K_r(常用于风蚀方程WEQ)的预测方程。该法费用低、快速、易于使用且不需专门培训和特球技术,实为糙度测定的一种简便方法。
The conventional method of measuring surface roughness is both labor-intensive and expensive. The authors invented a method of roller chain to determine the surface roughness. The roughness obtained by this method has a high correlation with the roughness measured by a parallel needle-type roughness meter. The results demonstrate the sensitivity of the chain method to surface roughness. In the paper, the prediction equation of roughness K_r (commonly used in wind erosion equation WEQ) is also established by the chain method. The method is low cost, fast, easy to use and does not require specialized training and special ball technology, in fact, a simple method for determination of roughness.