岩土工程学报2024，Vol.46Issue(8)：1776-1782,7.DOI:10.11779/CJGE20230510
真空作用下高含水率疏浚泥颗粒迁移规律试验研究
Experimental investigation on particle migration behaviour of dredged clays with high initial water contents under vacuum pressure
摘要
Abstract
A vacuum consolidation model equipment is designed for performing a series of vacuum consolidation tests on two dredged clays with different liquid limits reconstituted at different initial water contents.The experimental results indicate that the ratio of the initial water content to the liquid limit is a useful dimensionless index for describing the behaviour of fine particle migration of dredged clays under vacuum pressure.It is found that there is a unique critical value of the ratio of the initial water content to the liquid limit for the occurrence of particle migration.When the ratio of the initial water content to the liquid limit is less than the critical value,the particle migration of dredged clays does not occur under vacuum pressure.But in the case that the ratio of the initial water content to the liquid limit is larger than the critical value,the particles of dredged clays migrate to the drainage surface,resulting in the enrichment of clay particles in the vicinity of the drainages.The level of clay particles enrichment increases with the increase in the ratio of the initial water content to the liquid limit.关键词
疏浚泥/真空预压/颗粒迁移/液限/初始含水率Key words
dredged clay/vacuum preloading/particle migration/liquid limit/initial water content分类
建筑与水利引用本文复制引用
曾玲玲,王其忠,林晓鑫..真空作用下高含水率疏浚泥颗粒迁移规律试验研究[J].岩土工程学报,2024,46(8):1776-1782,7.基金项目
国家自然科学基金项目(52178361) （52178361）
江苏省南水北调科技研发项目(JSNSBD202205) （JSNSBD202205）
