Experimental and consolidation modeling of flowing mud during vacuum preloading considering transient clogging and vacuum pressure attenuation

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes Pub Date : 2025-02-11 DOI:10.1016/j.geotexmem.2025.02.001

Yuefu Zhou , Rui Chen , Yuanqiang Cai , Jun Wang , Peng Wang , Dong Su , Xiangsheng Chen

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引用次数: 0

Abstract

The non-uniform dense soil column that forms around plastic drainage plates when using vacuum preloading to treat flowing mud exhibits varying clogging along the extension direction, which severely lowers both the consolidation effectiveness and rate of consolidation. A transient clogging model is established based on indoor tests conducted under varying vacuum pressure for analyzing the evolution and impact of soil column along the plastic drainage plate direction. The study reveals that the vacuum pressure attenuation alters soil water content, density, and permeability, resulting in the formation of a “carrot-shaped” clogging zone, which adversely affects the drainage rate and consolidation uniformity. Building on the transient clogging model, a vacuum consolidation analysis method is proposed taking into accounting for the nonlinear vacuum transfer and soil characteristics. The validity of the proposed method is confirmed through case studies, accompanied by a detailed parameter analysis and discussion.

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来源期刊

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.