颗粒分析试验误差产生的原因  

The Causes of the Error in Grain Size Analysis Experiment

作　　者：王卉[1] 

机构地区：[1]安徽省水利水电勘测设计院勘测分院,安徽蚌埠233000

出　　处：《资源环境与工程》2011年第5期527-529,共3页Resources Environment & Engineering

摘　　要：颗粒分析试验方法主要有筛析法、密度计法及联合测定法。误差产生的原因可以分为:设备误差(仪器误差)、方法误差、环境误差、人员误差(人为误差)等。误差按性质一般分为系统误差和随机误差两类。而筛析法存在着随机误差,密度计法则不仅存在随机误差,还由于所用方法、仪器设备的原因而存在系统误差。认识这些误差产生的原因,有助于寻找相应的对策以减小误差,使试验结果更接近真值。Grain size analysis consists of sieve analysis method,hydrometer method and combined method.Errors can be divided into equipment error（instrumental error）,methodological error,environmental error,personnel error（human error）,etc..There also have systematic error and random error by nature generally.There are random errors for sieve analysis method.For hydrometer method there are not only random errors but also systematic errors from used methods and equipment.Finding the causes can help find appropriate measures to reduce the error and make the test results closer to the true ones.

关 键 词：颗粒分析 误差 筛析法 密度计法 

分 类 号：TU411.2[建筑科学—岩土工程]