Seepage and wetting evolution characteristics of coal fracture under the dual influence of ultrasonic stimulation and surfactant modification

IF 3.8 2区物理与天体物理 Q1 ACOUSTICS

Ultrasonics Pub Date : 2025-03-20 DOI:10.1016/j.ultras.2025.107646

Qiming Huang , Bo Yu , Cheng Zhai , Gang Wang , Haonan Shi , Ting Liu , Hao Xu , Xu Wang , Hongzhan Liu

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引用次数: 0

Abstract

Coal seam water injection can effectively improve the water content of the coal seam and control the dust pollution in the mining process from the source. In this paper, we investigate the changes in internal fracture structure and water transport in coal samples by double treatment of surfactant and ultrasonic wave on anthracite samples. Ultrasonic treatment of coal samples immersed in water and observation of the difference in wetting characteristics before and after treatment. The results demonstrate that the primary fracture in the coal samples expands within 4–5 h of ultrasonic stimulation, a new fracture with an opening between 10 and 15 µm is generated during the stimulation process and the permeability of the coal samples increases by four to eight times compared with the untreated one. It is worth noting that water can fully penetrate the newly formed fracture during the ultrasonic intervals. Ultrasound can make surfactants dissolve better, but the thermal and cavitation effects of ultrasound can also inhibit the effect of surfactants in promoting water absorption in coal. The results guide future research and development of ultrasonic-enhanced water injection technology in coal seams.

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来源期刊

Ultrasonics 医学-核医学

CiteScore

7.60

自引率

19.00%

发文量

186

审稿时长

3.9 months

期刊介绍： Ultrasonics is the only internationally established journal which covers the entire field of ultrasound research and technology and all its many applications. Ultrasonics contains a variety of sections to keep readers fully informed and up-to-date on the whole spectrum of research and development throughout the world. Ultrasonics publishes papers of exceptional quality and of relevance to both academia and industry. Manuscripts in which ultrasonics is a central issue and not simply an incidental tool or minor issue, are welcomed. As well as top quality original research papers and review articles by world renowned experts, Ultrasonics also regularly features short communications, a calendar of forthcoming events and special issues dedicated to topical subjects.