黄河沉积粉土渗透系数变化研究  

A STUDY ON THE VARIATION IN THE SEEPAGE COEFFICIENT OF YELLOW RIVER SILT

作　　者：陈勇[1] 单红仙[1] 贾永刚[1] 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266003

出　　处：《海洋湖沼通报》2005年第4期15-22,共8页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金资助项目(40172088);山东省自然科学基金资助项目(Q99E10)资助

摘　　要：现代黄河三角洲以粉质类土沉积为主,土体渗透系数是三角洲上进行工程开发活动时需要考虑的主要参数之一,其变化规律目前还缺乏系统的研究。本文采集原状土样,利用模拟加载渗透实验,研究固结压力、渗透压力对黄河三角洲粉质土渗透系数的影响,得到土样在不同方向上渗透系数随固结压力和渗透压力的变化规律,并通过扫描电镜试验,从微观结构上探讨了土体渗透系数变化规律的机理。The modern delta of Yellow River is mainly composed of silt sediments. The seepage coefficient of soil is one of the main parameters to be considered when conducting engineering development on the delta of the Yellow River, yet so far there has been little research on this. We took undisturbed soil samples to investigate the influence of concretion pressure and seepage pressure on the Yellow River delta silt sediments. We obtained the variation of the seepage coefficient in various directions as a function of the variation of concretion pressure and seepage pressure, and probed into the variational mechanism of soil seepage coefficient in terms of microstructure by SEM test.

关 键 词：黄河三角洲 渗透系数 渗透压力 固结压力 微结构 

分 类 号：P343.5[天文地球—水文科学] TU43[天文地球—地球物理学]