吹填泥浆絮凝沉降规律研究  

Study on the flocculation sedimentation law of hydraulic-dredged Slurry

作　　者：张涛[1] 艾英钵[2] 范志浩 沙学军 ZHANG Tao;AI Yingbo;FAN Zhihao;SHA Xuejun(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Jiangsu Nanjing, 210098, China;Research Institute of Geotechnical Engineering, ohai University, Jiangsu Nanjing, 210098, China)

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学岩土工程研究所,江苏南京210098

出　　处：《河北工程大学学报（自然科学版）》2017年第3期50-55,共6页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：中央高校基本科研业务费专项基金资助项目(2015B17714)

摘　　要：以温州洞头吹填泥浆为研究对象,利用沉降柱试验,考察吹填泥浆的絮凝沉积规律。结果表明,CPAM的加入显著提高了泥浆的沉降速率,可有效提高泥水分离速率,并使上覆水澄清,一定程度上可增加沉积土的密度、降低沉积土的孔隙比;同时,根据吹填泥浆的絮凝沉积规律,提出以CPAM作为絮凝剂处理吹填泥浆的絮凝沉积模式,将其分为絮凝沉降、快速沉降、慢速沉降、稳定四个阶段。By using the sedimentation column test,the fl occulation sedimentation law of the hydraulicdredgedslurry is investigated with the case of Dongtou of Wenzhou.The results show that the additionof CPAM can increase the settling rate of slurry,improve the separation rate of slurry,and make theoverlying water clear,which can increase the density of sedimentary soil in some extent,and reducethe void ratio of sedimentary soil;At the same time,according to the fl occulation sedimentation law ofhydraulic-dredged slurry,the fl occulation sedimentation model of CPAM as fl occulant to treat the dredgerfi lled slurry is put forward,which is divided into four stages of fl occulation sedimentation,rapid settling,slow settling and stabilization.

关 键 词：吹填泥浆 絮凝沉降 CPAM 孔隙比 

分 类 号：TU411[建筑科学—岩土工程]