Research on the in-situ permeability enhancement mechanism of loose porous medium using ultrasonic waves based on NMR

IF 5.9 1区地球科学 Q1 ENGINEERING, CIVIL

Journal of Hydrology Pub Date : 2025-03-25 DOI:10.1016/j.jhydrol.2025.133176

Yan Zhao , Liu Yang , Siyuan Li , Shengke Yang , Zhenkun Geng , Mingxiu Ji , Ruipeng Dong , Yinyu Wen

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引用次数: 0

Abstract

The permeability of aquifers is a key factor influencing the transport of agents within the pores, and therefore significantly determines the efficiency of in-situ groundwater remediation. It is known that ultrasonic waves can alter the pore size distribution characteristics, increase pore connectivity, and thereby improve the permeability of porous media, but the application of this technology in loose porous aquifer is rare. This paper investigates the transport laws of solutes in loose porous media before and after ultrasonic treatment within a one-dimensional sand column, and uses nuclear magnetic resonance (NMR) technology to quantitatively characterize the changes in pore structure and permeability of the medium. The results confirm that ultrasonic waves can enhance the in-situ permeability of loose porous media through thermal effects, cavitation effects, mechanical vibration, and acoustic streaming effects, and this enhancement is a result of the synergistic effects of ultrasonic waves on the matrix and fluid. The study also indicates that low-permeability media are more sensitive to the ultrasonic permeability enhancement, suggesting that this technology has the potential to improve the efficiency of groundwater pollutant degradation by enhancing the permeability and mass transfer efficiency of low-permeability aquifers.

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来源期刊

Journal of Hydrology 地学-地球科学综合

CiteScore

11.00

自引率

12.50%

发文量

1309

审稿时长

7.5 months

期刊介绍： The Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology and hydrogeology. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, hydraulics, agrohydrology, geomorphology, soil science, instrumentation and remote sensing, civil and environmental engineering are included. Social science perspectives on hydrological problems such as resource and ecological economics, environmental sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site.