上海陆域地区古河道溺谷相沉积层工程地质特征研究  

Engineering Geological Feature Study of Paleochannel Drowned-valley Facies Strata in the Shanghai Land Area

作　　者：高大铭[1] 陈振荣[1] 吕全荣[2] 

机构地区：[1]上海市政工程设计研究院,上海200092 [2]华东师范大学,上海200062

出　　处：《上海地质》1998年第4期11-21,共11页

摘　　要：上海地区全新世沉积物在区域上分异剧烈,由此,研究区内形成主要的古河道有四条。按其沉积相的层序组合可划分出三个基本类型,每个类型和古河道溺谷相各层序组合,反映了一种沉积环境和沉积过程。同时,它们的工程地质特征亦各自不同。本文对三个基本类型的古河道溺谷相沉积的桩基持力层的选择、应用找到了充分的依据。The Holocene sediments are of obvious distinction in the Shanghai area, thereby within the study area formed four main paleochannels. According to the stratigraphical sequences of sedimentary facies, three basic patterns can be divided, each pattern and paleovalley drowned-valley facies correspond to a special sedimentary environment and process. Furthermore, their engineering geological features are different each other. This paper finds adequate basis for choice and application of pile-base supporting layer for the three basic pattern pattern paleochannel drowned-valley facies beposits.

关 键 词：古河道溺谷相 沉积层 层序组合 桩基持力层 沉积相 上海地区 工程地质 沉积环境 

分 类 号：P642.15[天文地球—工程地质学]