深圳西部滨海海积软土工程特性及统计分析

Engineering Characteristics and Its Statistical Analysis of Soft Marine Clay on Shenzhen West Coast

滨海相沉积软土工程性质特殊,一直是岩土工程研究的热点问题。随着沿海地区开发建设的快速发展,越来越多的软土地基工程问题显现出来,迫切需要对有关海积软土的工程特性作出准确把握。深圳西部滨海海积软土具有含水量高、压缩性高、强度低、渗透性低、结构性强等典型特性,近年来该地区的大规模填海工程建设中积累了丰富的工程数据。本文搜集整理了深圳西部滨海4个典型的大面积填海工程资料,对该地区的软土工程特性指标进行了统计分析,对指标的分布特征、相关性、及其随地层深度的变化规律进行了研究。研究成果有利于工程中对海积软土物理力学性质的总体认识,对于本地区及类似地区的土木工程建设具有借鉴意义。

Because of its particular engineering properties,soft marine clay is always a research focus in geotechnical engineering.With the fast development of coastal construction,more and more engineering problems about soft soil subgrade are appearing,and accurate understanding about engineering properties of soft marine clay is just in urgent need.The soft marine clay in Shenzhen west coastal area possesses such typical characteristics as high water content,high compressibility,low strength,low permeability,strong structural property,etc.,and in recent years a large amount of project data have been accumulated in large-scale reclamation and construction in this area.In this paper,engineering data from four typical large reclamation projects on Shenzhen west coast are collected,and the statistical analysis about property indicators of the soft soil is provided.The indicator distribution,correlation,and variation with depth are studied.The research results are advantageous to provide a general awareness about physical and mechanical properties of soft marine clay in engineering practice,and have reference significance for the civil engineering construction in local or other similar region.