高分子聚合物对淤泥沉积影响的试验  

Experiment on influence of macromolecule polymer on sedimentation of silt

作　　者：邱青长[1] 蔡文[2] 颜永国[1] 

机构地区：[1]中交四航工程研究院有限公司,中交交通基础工程环保与安全重点实验室,广东广州510230 [2]中交第四航务工程局有限公司,广东广州510231

出　　处：《水运工程》2015年第3期32-35,共4页Port & Waterway Engineering

摘　　要：在实验室利用量筒进行淤泥沉积试验,模拟现场吹填淤泥静水沉积过程,探讨了吹填淤泥在不同初始密度和不同絮凝剂对自重固结特性的影响。试验结果表明:泥水混合物的初始密度对沉积速度有重要影响,孔隙比变化速度、变化量以及沉积后的孔隙比都与泥浆初始密度成反比;泥浆的沉积速度与溶液阳离子化合价成正比;高分子聚丙烯酰胺是一种有效的絮凝剂,可有效使细颗粒快速絮凝沉淀。Based on the sediment test, we simulate the sedimentary situation of dredged silt and investigate the influences of different initial density of soil-water mixture and flocculant. The result shows that the initial density of mixtures has a significant impact on the deposition rate. The change of void ratio change quantity and speed, after the deposition of the void ratio and mud density is inversely proportional to the initial density. The mud deposition velocity and solution is proportional to the valence of cation. Macromolecule PAM is an effective flocculant and can make fine particles flocculate faster.

关 键 词：吹填淤泥 沉积 高分子聚合物 絮凝剂 

分 类 号：TU442[建筑科学—岩土工程]