清淤泥浆脱水-固化一体化工艺效果和机制研究

doi:10.16285/j.rsm.2023.0203

岩土力学 ›› 2024, Vol. 45 ›› Issue (2): 443-453.doi: 10.16285/j.rsm.2023.0203

清淤泥浆脱水-固化一体化工艺效果和机制研究

林小蔚^{1, 2}，侯豪^{1, 2}，刘环^{1, 2}，季浪^{1, 2}，谈正伟^{1, 2}，朱伟^{1, 3}

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. 河海大学土木与交通学院，江苏南京 210098；3. 河海大学环境学院，江苏南京 210098

收稿日期:2023-02-20 接受日期:2023-05-23 出版日期:2024-02-11 发布日期:2024-02-06
通讯作者: 朱伟，男，1962年生，博士，教授，主要从事岩土工程与环境工程方面的研究。E-mail: weizhu863@126.com
作者简介:林小蔚，男，1998年生，硕士研究生，主要从事岩土工程方面的研究。lxw04026514@126.com
基金资助:
江苏水利科技项目（No. 2021009）；国家重点研发项目（No. 2022YFC3202700）

Effect and mechanism of dredged mud by the integrated dewatering-curing process

LIN Xiao-wei^{1, 2}, HOU Hao^{1, 2}, LIU Huan^{1, 2}, JI Lang^{1, 2}, TAN Zheng-wei^{1, 2}, ZHU Wei^{1, 3}

1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 2. College of Civil and Transportation Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 3. College of Environment, Hohai University, Nanjing, Jiangsu 210098, China

Received:2023-02-20 Accepted:2023-05-23 Online:2024-02-11 Published:2024-02-06
Supported by:
This work was supported by the Hydraulic Science and Technology Project of Jiangsu Province (2021009) and the National Key Research and Development Program of China (2022YFC3202700).

摘要/Abstract

摘要： 疏浚工程中清淤泥浆的含水率通常非常高，常采用先脱水为泥饼再进行固化的方法，处理效率相对较低。为此选择普通硅酸盐水泥和硫铝酸盐水泥作为固化材料，结合絮凝材料和板框压滤技术，对太湖清淤泥浆进行脱水-固化一体化工艺研究。通过比阻试验和固化试验等手段，分析了该工艺中泥浆的脱水性能、固化效果的变化规律以及固化材料的损失情况。此外，还基于一体化工艺试验中泥浆的基本性质变化，讨论了固化材料流失的途径以及对泥浆脱水性能的影响机制。研究结果表明，采用脱水-固化一体化工艺能够改善清淤泥浆的粒径、压缩性，从而提高脱水特性，并且在工艺过程中固化材料的流失在9%以内，由于脱水泥饼性质更好，后续同样能够实现良好的固化效果。实际工程应用中，采用脱水固化一体化工艺可以提升泥浆处理的效率。

关键词: 清淤泥浆, 脱水, 固化, 泥处理, 泥利用

Abstract: In dredging projects, the water content of dredged mud is typically very high. The conventional method of dewatering and curing into mud cake has relatively low treatment efficiency. To address this issue, a study was conducted on the integrated dewatering-curing process of Taihu dredged mud. Ordinary Portland cement and calcium sulfoaluminate cement were chosen as curing materials, along with flocculants and plate and frame press filter technology. The study analyzed the dewatering performance of the slurry, the pattern of curing effect changes, and the loss of curing materials through specific resistance tests and curing tests. The pathway of curing material loss and its impact on the dewatering performance of the mud were discussed based on the fundamental property changes observed during the integrated process experiments. The results demonstrated that the integrated dewatering-curing process can enhance the dewatering characteristics by improving the particle size and compressibility of the dredged mud. The loss of curing material during the process was found to be less than 9%. The dewatering mud cake exhibited improved properties, resulting in effective curing effects. In practical engineering applications, the use of the integrated dewatering-curing process can enhance the efficiency of mud treatment.

Key words: dredged mud, dehydration, solidification, mud treatment, mud utilization

中图分类号:

TU 447

林小蔚, 侯豪, 刘环, 季浪, 谈正伟, 朱伟, . 清淤泥浆脱水-固化一体化工艺效果和机制研究[J]. 岩土力学, 2024, 45(2): 443-453.

LIN Xiao-wei, HOU Hao, LIU Huan, JI Lang, TAN Zheng-wei, ZHU Wei, . Effect and mechanism of dredged mud by the integrated dewatering-curing process[J]. Rock and Soil Mechanics, 2024, 45(2): 443-453.

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清淤泥浆脱水-固化一体化工艺效果和机制研究

Effect and mechanism of dredged mud by the integrated dewatering-curing process

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