中南大学学报（自然科学版）2025，Vol.56Issue(4)：1489-1501,13.DOI:10.11817/j.issn.1672-7207.2025.04.020
多孔介质气体渗透性测试装置及渗透性试验研究
Gas permeability testing device for porous media and permeability test research
摘要
Abstract
To investigate the effects of ultra-high gas pressure and complex stress on the gas permeability of porous media materials,a multi-parameter control gas permeability apparatus was developed,which is more aligned with the operational conditions of compressed air energy storage(CAES).This apparatus can apply long-term cyclic loads following various loading paths,such as linear,sinusoidal,triangular,and trapezoidal,under high gas pressure to simulate the complex stress conditions during charging and discharging.The impact of different gas types on the permeability of concrete were studied by experiment and the evolution of sandstone permeability under conditions of confining pressure cycling and simultaneous cycling of confining and axial pressures was analyzed.The results indicate that when compressed air and nitrogen are used as permeating gases,the steady-state flow rate difference is less than 5％.The relationship between flow rate and gas pressure during leakage can be described by a power function equation,following a dynamic pattern of rapid decline-slow decline-zeroing.Under alternating confining and axial pressures,the permeability ratio of medium sandstone is slightly lower than that under alternating confining pressure with constant axial pressure.During the cycling process,instantaneous flow rate variation decreases with the increase of axial and confining pressures.This apparatus effectively reflects the gas seepage evolution laws of porous media and can provide scientific support for site selection strategies and sealing system design in gas storage caverns.关键词
压缩空气储能/多孔介质/气体渗透性/三轴试验/测试装置Key words
compressed air energy storage/porous medium/gas permeability/triaxial test/testing device分类
建筑与水利引用本文复制引用
王孟,徐继伟,高芯燚,陈兵,李梦天,张庆松,刘人太..多孔介质气体渗透性测试装置及渗透性试验研究[J].中南大学学报（自然科学版）,2025,56(4):1489-1501,13.基金项目
山东省重点研发计划项目(2020CXGC011403) （2020CXGC011403）
山东能源集团重大关键技术攻关项目(SNKJ2023A07-R14) （SNKJ2023A07-R14）
中国博士后科学基金资助项目(GZC20231479)(Project(2020CXGC011403)supported by the National Key R&D Plan of Shandong Province （GZC20231479）
Project(SNKJ2023A07-R14)supported by the Shandong Energy Group Major Key Technology Research Project （SNKJ2023A07-R14）
Project(GZC20231479)supported by the China Postdoctoral Science Foundation) （GZC20231479）
