【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。更多还原

【Abstract】 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.更多还原