| 吹填泥浆絮凝沉降规律研究 |
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| 引用本文： | 张涛,艾英钵,范志浩,沙学军.吹填泥浆絮凝沉降规律研究[J].河北工程大学学报,2017,34(3):50-55. |
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| 作者姓名： | 张涛 艾英钵 范志浩 沙学军 |
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| 作者单位： | 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,河海大学 岩土工程研究所, 江苏 南京 210098,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,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 |
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| 基金项目： | 中央高校基本科研业务费专项基金资助项目（2015B17714） |
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| 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。
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| 关 键 词： | 吹填泥浆 絮凝沉降 CPAM 孔隙比 |
| 收稿时间： | 2017/7/6 0:00:00 |
Study on the flocculation sedimentation law of hydraulic-dredged Slurry |
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| Authors: | ZHANG Tao AI Yingbo FAN Zhihao and SHA Xuejun |
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| Affiliation: | 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,Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Jiangsu Nanjing, 210098, China and Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Jiangsu Nanjing, 210098, China |
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| Abstract: | By using the sedimentation column test, the flocculation sedimentation law of the hydraulicdredged slurry is investigated with the case of Dongtou of Wenzhou. The results show that the addition of CPAM can increase the settling rate of slurry, improve the separation rate of slurry, and make the overlying water clear, which can increase the density of sedimentary soil in some extent, and reduce the void ratio of sedimentary soil; At the same time, according to the flocculation sedimentation law of hydraulic-dredged slurry, the flocculation sedimentation model of CPAM as flocculant to treat the dredger filled slurry is put forward, which is divided into four stages of flocculation sedimentation, rapid settling, slow settling and stabilization. |
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| Keywords: | hydraulic-dredged slurry flocculation sedimentation CPAM void ratio |
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