滨海新区第四系沉积物颗粒特征分析  

Analysis on Particle Characteristics of Quaternary Sediments in Binhai New Area

作　　者：韩蕾[1] 赵建军[1,2] 姜芯 陈素敏[1] HAN Lei ZHAO Jianjun JIANG Xin CHEN Sumin(School of Geology and Geomatics Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, TCU, Tianjin 300384, China)

机构地区：[1]天津城建大学地质与测绘学院,天津300384 [2]天津城建大学天津市软土特性与工程环境重点实验室,天津300384

出　　处：《天津城建大学学报》2017年第1期23-28,共6页Journal of Tianjin Chengjian University

基　　金：天津市软土特性与工程环境重点实验室开放基金项目(2011SCEEKL006);天津市教委重点项目(2013ZD03);天津市科委重点项目(13JCZOJC35500)

摘　　要：通过颗粒分析及扫描电镜分析,对滨海新区临港工业区沉积物的粒度百分比、分形维数、平均形态系数等进行研究,得到了粒度、微观分布及颗粒形态的变化规律.实验结果表明:沉积物分选较差,结构以凝絮结构和片状堆叠结构为主;垂向上,随深度增加土微观颗粒变得狭长不圆滑,粒度成分变得越发不均,这很可能与当时的气候变暖和静海沉积有关;揭示了滨海新区第四系沉积物的粒度分布特征及其沉积环境.Through the particle size analysis and scanning electron microscope analysis, this paper researched the percentage of the particle size, the fractal dimension, average shape coefficient of the sediments of offshore Industrial Zone of Binhai New Area, and obtained the variation law of the particle size, microscopic distribution and particle morphology. The experiment result showed that the sediments were poorly sorted ,and their main structures were floc structure and sheet stacking structure. Vertically, soil micro particles became narrow and unsmooth with the increase of depth ; the grain size composition became more uneven,which might be caused by climate warming and euxinic deposit. The result also showed the grain size distribution of Quaternary sediments and sedimentary environment in this area.

关 键 词：第四系沉积物 颗粒特征 微观结构 沉积环境 分形维数 

分 类 号：P534.63[天文地球—第四纪地质学]