Experimental research on mechanism of scour by submerged jets in consolidated clay

IF 6 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Ain Shams Engineering Journal Pub Date : 2025-03-24 DOI:10.1016/j.asej.2025.103356

Xing Zhao , Dong Chen , Lianjun Zhao , Wenjiao Zhang , Zhongmei Wang , Caiping Wu

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Abstract

This study presents a rapid consolidation device for clay, coupled with a systematic investigation of submerged jet scouring behavior in consolidated clay under varying parametric conditions (soil strength: 25–40 kPa; jet velocity: 7.5–12.5 m/s; nozzle diameter: 5–7 mm; target distance: 0–3 cm). The developed graded vacuum preloading method demonstrates remarkable efficiency in producing hardened sediment specimens (compaction time <192 hr) that exhibit comparable physical properties to naturally consolidated reservoir deposits that have formed over many years. Experimental findings reveal a linear proportionality between shear strength and dry density. Notably, the cohesive nature of consolidated clay fundamentally alters scouring mechanisms through interparticle cementation effects, distinguishing it from non-cohesive soil behavior. Temporal evolution analysis shows the scouring depth follows a second-order exponential growth pattern, progressing through four characteristic phases: (Ⅰ) short start stage (0–3 s), (Ⅱ) rapid development stage (3–35 s), (Ⅲ) slow expansion stage (35–60 s), and (Ⅳ) stable stage (>60 s). Parametric sensitivity studies establish positive correlations between scouring efficiency and jet velocity as well as nozzle diameter, while demonstrating inverse relationships with both target distance and soil strength.

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.