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为了研究温度对饱和-非饱和土水力参数的影响,根据达西定律,研制了一种变温下饱和-非饱和土水力参数测定装置,该装置包括实验筒、供水与回水系统和数据采集系统。该装置可以获得不同温度下饱和渗透系数、给水度和土壤水分特征曲线、非饱和渗透系数、比容水量和扩散率等参数,进一步可以获得这些参数与温度的数学表达式;该实验装置所用试样大,减少了小试样测试结果的随机性,且测定参数多、自动化程度高,具有推广应用价值。
In order to study the effect of temperature on the hydraulic parameters of saturated-unsaturated soil, a device for measuring hydraulic parameters of saturated-unsaturated soil under variable temperature was developed according to Darcy’s law. The device includes an experimental cylinder, a water supply and return system, and a data acquisition system . The device can obtain saturation permeability coefficient, water supply and soil water characteristic curve, unsaturated permeability coefficient, specific volume of water and diffusivity and other parameters under different temperatures, and can further obtain the mathematical expressions of these parameters and temperature. The experimental device used in the test The sample size reduces the randomness of test results of small samples, and has many measurement parameters and a high degree of automation, so it has the value of popularization and application.