In order to test the reliability and performance of a flexible-wall permeameter ( FWP) , comparative tests of a FWP and a falling-head permeameter were conducted with cement-soil samples, cement slurry samples, and soil samples, and comparative tests of different seepage pressures and sample heights and diameters were conducted for the FWP. The test results show that the FWP can provide accurate results, a reliable performance, and airproofed flexible walls, and it does not have strict requirements for sample preparation, which enable us to freely select the height and diameter of samples within a certain range. Permeability test with the FWP can be quickly finished using high-seepage pressures. The FWP can be used to test cement-soil, cement slurry, and plastic concrete samples with permeability coefficients less than 1×10-5 cm/s and hard soil samples with permeability coefficients less than 1×10-6 cm/s.%为了测试柔壁渗透仪的可靠性及其性能，采用水泥土样和普通土样与常用的变水头渗透仪进行了对比测试，并进行了柔壁渗透仪不同渗透压、不同试样高度和直径的对比测试。试验结果表明：柔壁渗透仪测试结果准确、性能可靠，柔性壁密闭性好，对制样要求不高，试样高度和直径可在一定范围内选择；可采用高渗透压快速完成渗透系数测试；仪器可用于测试渗透系数小于1×10-5 cm/s的水泥土样、水泥浆样和塑性混凝土样，以及渗透系数小于1×10-6 cm/s的硬土样测试。
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