阶跃真空预加载条件下 PHDs-PVDs 处理疏浚泥浆的脱水和加固实验研究

IF 4.7 1区 工程技术 Q1 ENGINEERING, GEOLOGICAL
Kang Yang , Mengmeng Lu , Jinxin Sun , Ganbin Liu
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引用次数: 0

摘要

如今,利用预制垂直排水沟(PVD)或预制水平排水沟(PHD)结合真空预加载(VP)已成为处理疏浚泥浆的一种普遍而有效的策略。然而,这两种方法都有一些固有的局限性。本研究进行了三组平行模型实验,以比较 PVDs、PHDs 和步骤 VP 下 PHDs-PVDs 处理疏浚泥浆的效果。首先,在实验过程中监测排水量、沉降和孔隙水压力。然后,测量实验后不同位置土壤的抗剪强度和含水量,并测量不同断面的土壤剖面。此外,还进行了土壤挖掘,以评估 PHD 和 PVD 的变形特性。最后,通过扫描电子显微镜分析评估滤膜的堵塞情况。结果表明,所提出的方法可以结合 PHD 和 PVD 的优点,有效提高泥浆的处理效果。这些发现阐明了 PHDs-PVDs-VP 的脱水和强化机理,为其实际工程应用提供了宝贵的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental study on dewatering and reinforcement of dredged slurry treated by PHDs-PVDs under step vacuum preloading

Nowadays, the utilization of prefabricated vertical drains (PVDs) or prefabricated horizontal drains (PHDs) in combination with vacuum preloading (VP) has emerged as a prevalent and effective strategy for treating dredged slurry. Nevertheless, both of these methods possess certain inherent limitations. In this study, three groups of parallel model experiments are conducted to compare the effectiveness of PVDs, PHDs and PHDs-PVDs under step VP in treating dredged slurry. Firstly, the water discharge, settlement and pore water pressure are monitored during the experiments. Then, the shear strength and water content of the soil at various locations after experiments are measured and the soil profiles at different cross sections are gauged. Additionally, soil excavation is conducted to evaluate the deformation characteristics of PHDs and PVDs. Finally, a scanning electron microscopy analysis is to assess the clogging of filter membranes. The results indicate that the proposed method can combine the advantages of both PHDs and PVDs, effectively enhancing the treatment effectiveness of the slurry. These findings elucidate the dewatering and reinforcement mechanism of PHDs-PVDs-VP and provide valuable insights for its practical engineering application.

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来源期刊
Geotextiles and Geomembranes
Geotextiles and Geomembranes 地学-地球科学综合
CiteScore
9.50
自引率
21.20%
发文量
111
审稿时长
59 days
期刊介绍: The range of products and their applications has expanded rapidly over the last decade with geotextiles and geomembranes being specified world wide. This rapid growth is paralleled by a virtual explosion of technology. Current reference books and even manufacturers' sponsored publications tend to date very quickly and the need for a vehicle to bring together and discuss the growing body of technology now available has become evident. Geotextiles and Geomembranes fills this need and provides a forum for the dissemination of information amongst research workers, designers, users and manufacturers. By providing a growing fund of information the journal increases general awareness, prompts further research and assists in the establishment of international codes and regulations.
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