泥沙研究Issue(3)：29-36,8.
长江口徐六泾河段洪季中水期悬浮泥沙沉降特性
Settling properties of fine sediment at mean water levels in flood season at Xuliujing Station in Changjiang Estuary
摘要
Abstract
From Sept. 27 to Oct. 5,2007,an OBS3A,a LISST100 (Type B) and an ADCP were used together to measure the settling velocity of fine sediment at Xuliujing Station. The results show the fine sediment had different settling properties in the spring tide and neap tide. When the floc size was equal, the effecitive floc density and settling velocity during the spring tide was 1.5 times of those during the neap tide. The range of settling velocity was from 0. 5 to 3.0mm/s during the study period. Based on the theory of fractal geometry, the mass fractal dimension was about 2. 5 and the combined coefficient which affected the settling properties from the non-spherical shape of floc and non-uniform primary particles was about between 0.43 and 0.5.关键词
细颗粒泥沙/絮凝体粒径/絮凝体密度/沉降速度/长江口/现场测量Key words
fine sediment/ floc size/ floc density/ settling velocity/ Changjiang Estuary/ in-situ measurement分类
建筑与水利引用本文复制引用
邵宇阳,严以新,马平亚,张志林..长江口徐六泾河段洪季中水期悬浮泥沙沉降特性[J].泥沙研究,2011,(3):29-36,8.基金项目
国家自然科学基金项目(No.50709007) （No.50709007）
水利部公益性基金项目(No.200701026) （No.200701026）
江苏省普通高校研究生科研创新计划项目(No.CX078_135z) （No.CX078_135z）
江苏省自然科学基金项目(No.BK2007179) （No.BK2007179）
水文水资源与水利工程科学国家重点实验室科研业务费自主研究项目(No.2010585312) （No.2010585312）
