湛江黏土结构性与沉积环境内在关联研究

An Experimental Investigation on the Correlation Between Soil Structure and Sedimentary Environment of Zhanjiang Clay

湛江地区黏性土具有强结构性,产生的工程问题比较突出。土的结构性形成与土的成分、环境、成因相关。为了研究湛江黏土结构性与沉积环境内在关联,对湛江东海岛的黏土进行了一系列试验。结果表明:湛江黏土颗粒以片状颗粒为主,主要是边—面、边—边接触,并且构成的开放式絮凝结构具有定向性无序特点;湛江东海岛的黏土具有典型黏土的物理力学特性,如高内聚力与低渗透率;湛江地区的沉积矿物与酸性环境是该地区黏土强结构性形成的主要成因。

Insight into the formation of Zhanjiang clay structure is limited and it is essential in terms of evaluating and predicting the safety and effectiveness of construction on Zhanjiang area with structured clay.The physical and engineering properties of Zhanjiang clay were provided,and the structure characteristics was investigated.The effect of sedimentary environment on soil structure was explored based on the experimental data of Zhanjiang clay in this study.The high bonding strength and stable aggregation of Zhanjiang clay are due to the abundant organic matter and acid environment.