Mechanism and research progress of ultrasonic excitation flow enhancement in low permeability coal seam
Shugang Li1
Ruizhe Wang2
Min Yan1
Yue Qiu3
Haifei Lin4
Xiaoying Zhang3
Xing Zhou3
1.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an,Shaanxi,China;Western Coal Mine Gas Disaster Prevention and Control Key Laboratory of Colleges and Universities in Shaanxi Province,Xi'an 710054,Shaanxi,China2.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an,Shaanxi,China;School of Safety Science and Engineering,Xi'an University of Science and Technology,58,Yanta Mid.Rd.,Xi'an 710054,Shaanxi,China3.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an,Shaanxi,China4.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an,Shaanxi,China;Western Coal Mine Gas Disaster Prevention and Control Key Laboratory of Colleges and Universities in Shaanxi Province,Xi'an 710054,Shaanxi,China;School of Safety Science and Engineering,Xi'an University of Science and Technology,58,Yanta Mid.Rd.,Xi'an 710054,Shaanxi,China
摘要：Ultrasonic excitation permeability enhancement technology has attracted great attention in the field of coal seam perme-ability enhancement.This technology has the characteristics of no pollution and low energy consumption.According to the thermal effect,cavitation effect and mechanical vibration effect of ultrasonic wave when ultrasonic wave propagates in two-phase or even multi-phase medium,the triple effect can achieve the purpose of fracturing coal body.It can effectively change the pore and fracture structure of coal and improve the permeability of coal seam.It has become an effective permeability enhancement technology.In this paper,the research work of ultrasonic excitation of coal is summarized from the aspects of theoretical analysis and laboratory test.From the perspectives of pore structure,macro fracture structure and mechani-cal damage behavior response of coal under ultrasonic excitation,the influence of key parameters of ultrasonic excitation on the desorption and seepage of coal gas is analyzed.Combined with the research work of the author's research team and the latest research progress at home and abroad,the bottleneck problems and directions that need to be solved urgently in the application of ultrasonic excitation current increasing technology in low permeability coal seams are pointed out,and a new idea for the application of ultrasonic excitation current increasing technology in coal seam gas extraction is proposed.It is of great scientific significance in the development of deep coal seam gas resources and disaster prevention and control.
机标关键词：permeabilitymechanismresearchflowseamcoalenhancementexcitation
论文发表日期：2025-12-31
在线出版日期：2026-01-30（本平台首次上网日期，不代表文献的发表时间）
页数：22( 1-22 )
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