沈阳工业大学学报2012，Vol.34Issue(6)：703-709,7.
气水孔隙混合流体的压缩性
Compressibility of air-water pore mixture fluid
摘要
Abstract
In order to obtain the calculation formula for compressibility of pore mixture fluid,which is suitable to the consolidation analysis on soil with high degree of saturation,the compression coefficient of pore mixture fluid was expressed by the pore water pressure.In the derivation process,the dissolution of air bubble in water was neglected,and the relation between air bubble pressure and water pressure was established according to Laplace formula.The influence of single air bubble on compressibility was analyzed,and the one-dimensional consolidation compression tests were performed.In addition,the formula for compression coefficient of mixture fluid was verified.The results show that three major factors affecting the compressibility of pore fluid are degree of saturation,water pressure and dispersion degree of pore air.The smaller the degree of saturation is,or the bigger the radius of air bubble is,the larger the compressibility of mixture fluid is.If the initial degree of saturation is the same,the effect of initial radius of air bubble on compression coefficient is quite small when the water pressure reaches the maximum value.Through comparing the experimental results with the results calculated by other researchers,it is proved that the proposed theoretical formula can analyze and predict the compression coefficient of pore mixture fluid better.关键词
封闭气泡/非饱和土/饱和度/压缩性/压缩流体/混合流体/固结/孔隙水压/孔隙气压Key words
occluded air bubble/unsaturated soil/degree of saturation/compressibility/compressible fluid/mixture fluid/consolidation/pore water pressure/pore air pressure分类
建筑与水利引用本文复制引用
徐浩峰,谢康和..气水孔隙混合流体的压缩性[J].沈阳工业大学学报,2012,34(6):703-709,7.基金项目
国家自然科学基金资助项目 （）
宁波市科技创新团队基金资助项目 （）
