天津海泥吹填土颗粒组成的分析研究  

Analysis Research on Particle Size Distribution of Dredger Fill in Tianjin

作　　者：尹建道[1] 靳聪[1] 田苗[1] 许晖[1] 

机构地区：[1]天津理工大学环境科学与安全工程学院,天津300384

出　　处：《山东农业大学学报（自然科学版）》2014年第1期77-83,共7页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：天津市科技支撑计划重点项目(10ZCGYNC00800);天津港"海泥吹填地原土区柽柳植被构建技术研究"项目资助

摘　　要：海泥吹填土是一种特殊的淤泥质沉积物，颗粒组成（PSD）是其基本属性之一，也是其改良利用的重要理论基础。本文利用激光法和比重计法确定了天津海泥吹填土的颗粒组成及质地类型，并计算了土壤质量分形维数（Dm），探索了Dm与土壤质地之间的关系。研究结果表明：天津海泥吹填土的砂粒含量极少，仅占总质量的10％左右，粉粒含量最多，占总质量的50—60％，粘粒含量次之，占总质量的35％左右，属于不良级配土；其质地类型大多为粉质粘壤土，个别是粘壤土和粉质粘土；分形维数介于2．893—2．898之间，总体偏高。Soil particle size distribution（PSD） is not only one of the soil basic properties, but also is an important theoretical basis for the dredger fill, a special kind of muddy sediments, improvement and utilization. The PSD of dredger fill in Tianjin was analyzed by laser method and hydrometer method in this paper. Based on the PSD, Soil mass fractal dimension （Dm） was calculated and relationship between fractal dimension of PSD and soil texture was analyzed. Results indicated that sand content is extremely low,only about 10% of total mass; silt content is a lot, accounting for 45 -60% of total mass; clay content in the second, about 33% of the total mass. Therefore the dredger fill in Tianjin are poorly graded soil. Most of the soil texture type is silty clay loam, the individual is clay loam and silty clay. The fractal dimension is high between 2. 893 - 2.898.

关 键 词：天津 海泥吹填土 颗粒组成 激光法 比重计法 分形维数 

分 类 号：S151.92[农业科学—土壤学]