工程地质学报2026，Vol.34Issue(3)：997-1005,9.DOI:10.13544/j.cnki.jeg.2024-0230
珠江口-南海北部陆架与温州港-东海中部陆架表层沉积物物理力学性质研究
PHYSICAL AND MECHANICAL PROPERTIES OF SURFACE SEDIMENTS FROM THE PEARL RIVER ESTUARY-THE NORTHERN SOUTH CHINA SEA AND WENZHOU PORT-THE CENTRAL EAST CHINA SEA
摘要
Abstract
It is necessary to clarify the physical and mechanical properties of seabed sediments before designing offshore engineering structures.Basic physical property tests were carried out on surface sediments collected from the Pearl River Estuary in the northern South China Sea and from Wenzhou Port to the central East China Sea.Parameters related to natural water content,specific gravity,Atterberg limits,and particle size distribution were obtained.In addition,one-dimensional compression tests,K0 consolidation tests,and permeability tests were conducted to investigate the consolidation and permeability characteristics of the sediments.Finally,scanning electron microscopy tests were performed to analyze the microstructure of the surface sediments.Experimental results show that the sediments in both sea areas are low-liquid-limit clays.The sediments in the East China Sea are mainly composed of fine-grained soil(particle size＜0.075mm),and their basic physical and mechanical properties are relatively uniform.In contrast,for the sediments in the South China Sea,the parameters characterizing physical and mechanical properties exhibit a clear variation with spatial distribution.The liquid limit,clay content,and compression coefficient increase with increasing distance from the coast,while the consolidation coefficient decreases with increasing offshore distance.关键词
海底沉积物/物理性质/固结及渗透特性/微观结构/空间分布Key words
Seabed sediments/Physical properties/Consolidation and permeability characteristics/Micro-structure/Spatial distribution分类
建筑与水利引用本文复制引用
焦铭灿,刘君,李凯,韩聪聪..珠江口-南海北部陆架与温州港-东海中部陆架表层沉积物物理力学性质研究[J].工程地质学报,2026,34(3):997-1005,9.基金项目
国家自然科学基金项目(资助号:51979035,51890915).This research is supported by the National Natural Science Foundation of China(Grant Nos.51979035,51890915).本研究的样品采集得到国家自然科学基金委员会共享航次计划项目(航次编号:NORC2022-02+NORC2022-301与NORC2022-07)的资助. （资助号:51979035,51890915）
