河道浑水及淤泥含量对顶管施工管道减阻性能影响
PDF下载 (135)陈 旭,杜升涛,程滨生,周朝阳,陈 伟.河道浑水及淤泥含量对顶管施工管道减阻性能影响[J].宁波大学学报(理工版),2026,39(2):11-17.DOI:10.20098/j.cnki.1001-5132.2026.0611
CHEN Xu,DU Shengtao,CHENG Binsheng,ZHOU Chaoyang,CHEN Wei.The influence of turbid water and silt content on friction reduction performance in pipe jacking construction[J].Journal of Ningbo University(Natural Science & Engineering Edition),2026,39(2):11-17.DOI:10.20098/j.cnki.1001-5132.2026.0611
| Title: | The influence of turbid water and silt content on friction reduction performance in pipe jacking construction |
| 作者: | 陈 旭, 杜升涛, 程滨生, 周朝阳, 陈 伟 |
| Author(s): | CHEN Xu, DU Shengtao, CHENG Binsheng, ZHOU Chaoyang, CHEN Wei |
| 关键词: | 浑水; 淤泥; 膨润土; 触变指数; 摩阻力 |
| Keywords: | turbid water; silt; bentonite; thixotropic index; friction resistance |
| 分类号: | TU442 |
| DOI: | 10.20098/j.cnki.1001-5132.2026.0611 |
| 文献标识码: | A |
| 摘要: | 为节约水资源并探索河道淤泥的资源化利用，以甬江浑水及淤泥为研究对象，讨论其对膨润土泥浆减阻性能的影响。通过正交实验设计4组共18种泥浆配比，分别测试不同质量分数下膨润土、浑水、淤泥及黄原胶对泥浆触变指数的影响规律。在3个不同长度管道模型条件下，利用摩阻力测试装置进行51个泥浆减阻效果的拉力测试实验。结果显示，含沙浑水提高了膨润土泥浆的触变指数，对触变泥浆具有积极作用，但对泥浆减阻效果几乎没有影响；淤泥质量分数的增加导致触变指数降低，但添加0.05%黄原胶可部分恢复其触变指数；淤泥和膨润土质量分数分别为2%~6%、6%~10%时，黄原胶对泥浆减阻性能影响较小，但对泥浆减阻性能的稳定效果显著。 |
| Abstract: | To conserve water resources and explore the recycling of muddy sediment in river, this paper investigated the influence of Yongjiang River turbid water and silt on the friction-reducing properties of bentonite slurry. Through orthogonal experiments, four groups with a total of 18 slurry mixtures were designed to examine the influence of the mass fractions of bentonite, turbid water, and silt, as well as xanthan gum, on the thixotropic index of the slurry. Under three pipeline models of varying lengths, 51 tension tests were conducted using a frictional resistance testing apparatus to evaluate the drag-reducing effectiveness of the slurries. The results indicate that sand-laden turbid water enhances the thixotropic index of bentonite slurry, exerting a positive effect on thixotropic slurries while showing negligible impact on drag reduction. An increase in silt mass fraction reduces the thixotropic index, but adding 0.05% xanthan gum partially restores it. When the mass fractions of silt and bentonite range from 2% to 6% and 6% to 10%, respectively, xanthan gum has minimal influence on the drag-reducing performance of the slurry yet significantly improves its stability. |
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| 备注/Memo: | 收稿日期：2025-06-10 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ 第一作者：陈 旭，高级工程师，主要研究方向为市政工程及道路工程。E-mail: 282988214@qq.com *通信作者：杜升涛，博士/讲师，主要研究方向为市政地下顶管工程。E-mail: dushengtao@nbu.eu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
