论文部分内容阅读
河流泥沙颗粒分析方法众多,测定细颗粒(D<0.05mm)的有比重计法、底漏管法、吸管法、消光法;测定粗颗粒的有筛分析、粒径计等法。用什么方法对这些颗粒分析方法进行检测,目前尚无绝对的标准。在实际测试中,常以吸管法、单颗沉速的级配作为细、粗颗粒分析的相对比较标准。本文主要介绍吸管法的分离纯度及单颗沉速的试验方法和一些结果。1.吸管法分离纯度试验吸管法是对混合均匀的悬液,在其泥沙颗
There are many methods for the analysis of sediment particles in river sediment, such as gravimetric method, bottom drain method, pipette method and extinction method for determination of fine particles (D <0.05mm); There are no absolute standards for what methods to use for these particle analysis methods. In the actual test, often with pipette method, the single settling velocity grading as a fine, coarse particle analysis of the relative comparison standards. This article mainly introduces the test method and some results about the separation purity and the single sedimentation rate of the pipette method. 1. Pipette method for the separation of purity test Pipette method is a homogeneous suspension, in its sediment particles