甬江浑水及淤泥对膨润土泥浆性能参数影响的实验研究
PDF下载 (75)欧金辉,杜升涛,张遹鹏,周朝阳,陈 伟.甬江浑水及淤泥对膨润土泥浆性能参数影响的实验研究[J].宁波大学学报(理工版),2026,39(1):44-49.DOI:10.20098/j.cnki.1001-5132.2025.0615
OU Jinhui,DU Shengtao,ZHANG Yupeng,ZHOU Chaoyang,CHEN Wei.Experimental study on the influence of Yongjiang water and sludge on the performance parameters of bentonite slurry[J].Journal of Ningbo University(Natural Science & Engineering Edition),2026,39(1):44-49.DOI:10.20098/j.cnki.1001-5132.2025.0615
| Title: | Experimental study on the influence of Yongjiang water and sludge on the performance parameters of bentonite slurry |
| 作者: | 欧金辉, 杜升涛, 张遹鹏, 周朝阳, 陈 伟 |
| Author(s): | OU Jinhui, DU Shengtao, ZHANG Yupeng, ZHOU Chaoyang, CHEN Wei |
| 关键词: | 膨润土; 淤泥; 黏度; 滤失量; 泥皮厚度 |
| Keywords: | bentonite; silt; viscosity; filtration loss; filter cake thickness |
| 分类号: | TU442 |
| DOI: | 10.20098/j.cnki.1001-5132.2025.0615 |
| 文献标识码: | A |
| 摘要: | 城市顶管工程中为节约用水常采用河道浑水配制膨润土泥浆，但其高含沙量及淤泥可能劣化泥浆性能，亟须系统评估浑水及淤泥对泥浆减阻与护壁特性的影响。以甬江浑水及淤泥为研究对象，通过室内正交实验设计了18种泥浆配比，系统测试了清水和甬江浑水条件下的膨润土、甬江淤泥质量分数以及黄原胶对泥浆漏斗黏度、滤失量、泥皮厚度的影响。结果表明：膨润土质量分数对触变泥浆性能指标的影响显著，清水配制的泥浆性能指标随着膨润土质量分数的增加而增大；浑水因悬浮泥沙削弱胶结作用使漏斗黏度降低，但仍可作为配制泥浆的材料；添加质量分数为0.05%的黄原胶可大幅度提升含淤泥的泥浆性能，淤泥质量分数低于6%时可满足触变泥浆的各项指标要求。 |
| Abstract: | In urban pipe jacking engineering, river turbid water is commonly used to prepare bentonite slurry for water conservation. However, its high sediment content and silt may deteriorate slurry performance, necessitating a systematic evaluation of the impact of turbid water and sediment on the slurry’s drag reduction and wall protection characteristics. This study focuses on the turbid water and sediment from the Yongjiang River. Through orthogonal experiment design, 18 slurry formulations were tested in the laboratory to systematically investigate the influences of bentonite mass fraction, Yongjiang sediment mass fraction, and xanthan gum on the slurry properties—including Marsh funnel viscosity, filtration loss, and filter cake thickness—under both clear water and Yongjiang turbid water conditions. The results indicate that bentonite content significantly influences the performance of thixotropic slurry. In the case of clear-water-prepared slurry, performance metrics improve with increasing bentonite mass fraction. Turbid water reduces funnel viscosity due to suspended sediment weakening cementation but remains viable for slurry preparation. Adding 0.05% mass fraction of xanthan gum substantially enhances the performance of sediment-containing slurry. When the sediment mass fraction is below 6%, the slurry meets all performance requirements for thixotropic applications. |
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| 备注/Memo: | 收稿日期：2025-06-18 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ 第一作者：欧金辉，高级工程师，主要研究方向为城市顶管工程。E-mail: 115092894@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/ |
