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l引言气液二相流体的渗流问题是石油、天然气开采、地热开发、煤层气开采、煤炭地下气化和环境工程等极其广泛的工程领域普遍存在的问题。气液二相流体的渗流是典型的不溶混流体渗流问题。同时，由于气体为可压缩流体，在渗流过程中，随着渗透压力的变化，其气体表现了剧烈的体
Introduction The seepage problem of gas-liquid two-phase fluid is a ubiquitous problem in a very wide range of engineering fields such as oil and natural gas exploration, geothermal development, coalbed gas exploration, underground coal gasification and environmental engineering. The seepage of gas-liquid two-phase fluids is a typical problem of seepage-free fluid seepage. At the same time, as the gas is a compressible fluid, its gas shows a violent body as the osmotic pressure changes during the seepage process