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一、前言淤泥与砂组成的均匀混合土,是江海沉积的地质结构之一。对其特性,过去研究的较少,因此在工程地质中,出现此类土质时,究竟该按砂性土,还是粘性土来确定其物理力学性质,意见尚未统一。有的地区把淤泥混砂当着砂米处理,结果出现滑坡事故。如1955年厦门海堤,1984年南方某港口工程,都因忽略了淤泥混砂,这种混合土的特性,而造成失误。因此,对淤泥混砂所组成的混合土的特性及其变化规律的研究,对港口工程设计与港口地基规范的修订,有着非常重要的意义。为此我院
I. INTRODUCTION The homogeneous mixture of silt and sand is one of the geological structures of Jianghai deposition. For its characteristics, there have been few studies in the past. Therefore, in engineering geology, when this kind of soil occurs, whether the sandstone or cohesive soil should be used to determine its physical and mechanical properties has not been unified. In some areas, silt mixed sand was treated in the presence of sand rice, resulting in a landslide accident. For example, in 1955, the seawall of Xiamen, in 1984, a port project in the south, due to the neglect of the silt mixed sand, the characteristics of this mixed soil, resulting in errors. Therefore, it is of great significance to study the characteristics of mixed soil composed of silt and mixed sand and its changing rules for the revision of port engineering design and port foundation code. For our hospital