人民黄河Issue(2)：33-36,4.DOI:10.3969/j.issn.1000-1379.2014.02.011
深圳湾淤积泥沙自重沉积固结试验
Experiment of Deposited Sediment Weight Consolidation in Shenzhen Bay
摘要
Abstract
With the main study object of the deposited sediment from Shenzhen River and Bay,deposited sediment settling and consolidation process was fully simulated with the laboratory settlement column experiment,and then studied the settlement consolidation characteristics of the riv-er and marine deposited sediment respectively. The main conclusions are as follows:a)sediment settlement can be divided into the initial free set-tlement,block settlement and the weight consolidation settlement,of which,the lasting time for the initial free settlement stage is 3~6 hours,30 days for the block settlement stage and 10~400 days for the final consolidation stage. Moreover,the settlement lasting time is mainly determined by the sediment suspension initial concentration and the clay particle content. b)Sediment initial concentration and the clay particle content mainly in-fluence the sediment particle volume fraction. Sediment particle volume fraction increases with the initial concentration,and the clay particle con-tent determines the flocculation effect. c)With the initial concentration of 60~70 g/L,sediment suspension settlement amount is relatively small which also will decrease the dredging amount perfectly.关键词
沉降柱试验/自重固结/沉积/泥沙/深圳湾Key words
settlement column experiment/weight consolidation/deposition/sediment/Shenzhen Bay分类
建筑与水利引用本文复制引用
高庄平,范云中,郭帅杰..深圳湾淤积泥沙自重沉积固结试验[J].人民黄河,2014,(2):33-36,4.基金项目
国家自然科学基金资助项目（50809023）。 （）
