中山大学学报（自然科学版）（中英文）2024，Vol.63Issue(3)：32-37,6.DOI:10.13471/j.cnki.acta.snus.2023D003
珠海洪湾地区淤泥物理与宏观力学特性研究
The physical and macroscopic mechanical properties of silt in the Hongwan area of Zhuhai
摘要
Abstract
The Hongwan area in Zhuhai has widespread silt distribution,with specific engineering charac-teristics of low strength,significant deformation,and poor permeability.Its physical and mechanical properties are crucial for engineering safety.To explore the engineering characteristics of the silt,this study used undisturbed samples taken from the field to conduct laboratory experiments of basic physical property test,one-dimensional consolidation test,and consolidated undrained triaxial test.The results show that the natural moisture content of the soil samples is high,with a significant plasticity index and a hydraulic conductivity k ranging from 3.68×10-7 to 5.86×10-7 cm/s.It is classified as highly compressible soil based on the determined compression coefficient av ranging from 1.269 to 1.618 MPa-1 and a compression modulus Es ranging from 1.449 to 1.919 MPa.With increasing depth,samples show a gradual decrease in the compression coefficient and an increase in the compression modulus.The shear strength of the undisturbed soil samples is relatively low,with a cohesion c range of 10.10 to 20.84 kPa and an internal friction angle φ ranging from 7.28° to 12.09°.With increasing sample depth,the change in the internal friction angle is relatively small,while the cohesion significantly decreases.关键词
珠海淤泥/基本物理特性/一维压缩特性/三轴力学特性Key words
silt in Zhuhai/basic physical properties/one-dimensional compression characteristics/triaxial mechanical properties分类
建筑与水利引用本文复制引用
李栋,汪旭,闫一辉,刘建坤,唐昌意,李智文,李智健,常丹..珠海洪湾地区淤泥物理与宏观力学特性研究[J].中山大学学报（自然科学版）（中英文）,2024,63(3):32-37,6.基金项目
广东省基础与应用基础研究基金(2020B1515120083 （）
2022A1515010087) （）
珠海市产学研合作项目(ZH22017001200149PWC) （ZH22017001200149PWC）
珠海市社会发展领域科技计划项目(ZH22036204200009PWC) （ZH22036204200009PWC）
