南水北调与水利科技Issue(5)：901-904,4.DOI:10.13476/j.cnki.nsbdqk.2015.05.017
管袋充填细颗粒土料高效固结排水试验研究
Experimental study of efficient consolidation drainage for tubes filling with soil material of fine particles
摘要
Abstract
The construction speed of embankment with mud-filled tubes is constrained by the consolidation drainage efficiency af-ter the filling of tubes,which is related to the gradation of the filling soil material.Smaller soil particle size results in smaller consolidation drainage efficiency.In the southeastern coastal area of China,there are a lot of soil material with small grain size, which can cause serious clogging when they are filled into the tubes,and therefore the traditional construction scheme of tube filling is no longer applicable.The comparative study of laboratory tests showed that filling the tubes with the soil material of high content of fine-grained particles can form a soft clay layer at the surface of tubes and cause difficulty for consolidation. However,opening of mud drainage mouth at the surface of tubes can remove the mud with fine-grained particles and then in-crease the drainage efficiency.The punching bag precipitation tests also suggested that most of the soil material with coarser-grained particles appear in the bottom of the bags while the soil material with finer-grained particles occur at the surface of the bags.The existence of drainage pipe opening at the surface of the bags will not cause loss of coarser-grained soil material.关键词
充泥管袋/高效固结排水/放水排泥Key words
mud-filled tube/efficient consolidation drainage/drainage sludge分类
水利科学引用本文复制引用
常广品,吴晓南,束一鸣,刘云锋,顾克..管袋充填细颗粒土料高效固结排水试验研究[J].南水北调与水利科技,2015,(5):901-904,4.基金项目
国家科技支撑计划课题(2012BAB03B02) （2012BAB03B02）
