超声波振动仪器在采用沉降法进行粘性泥沙粒径分析中的应用

本文提出在粘性泥沙粒径颗粒分析中使用超声波振动仪器进行细颗粒泥沙分散的方法,使用基于沉降法原理的TZC-4粒度分析仪,采用三种不同的颗粒粒径测量工艺分别对乐清湾港区、阳澄湖、奉贤边滩、上海闵行河道四种不同的泥样进行了颗粒粒径分析,并与现有规范规定的测量工艺所得结果进行了对比。实验分析表明,该方法能够有效地测量泥沙的基本粒径,泥沙颗粒越细,该方法的优越性越为突出。

Application of ultrasonic vibrator to sedimentation method based analysis on cohesive sediment grain size

A method of using an ultrasonic vibrator to disperse the cohesive structure of the cohesive sediment consisting of fine gains for the analysis made on its particle size is put forward herein，and then the sedimentation method based TZC-4 particle size analyzer is adopted for the particle size analyses on the grains of four different mud samples from Leqing port，Yangcheng Lake，Fengxian Shoal，the river channel through Minhang District of Shanghai made by three different particle size measurement technologies respectively，furthermore，the analysis results are compared with those from the measuring technologies specified by the existing specification concerned.The testing result shows that the basic particle size can be effectively measured by this method，i.e. the finer the sediment particles size is，the more superior the proposed method is to be.