Abstract The unsaturated hydraulic conductivity function is one of the keys to solve unsaturated seepage issues, and it is difficult to be obtained via the laboratory test considering the time involved. In this study, a series of laboratory tests, include capillary rise test and downward infiltration test, were conducted to obtain the unsaturated hydraulic conductivity function of six kinds of soils varies from sand to silty clay by using the wetting front advancing method. The similarities and differences between instantaneous profile method and wetting front advancing method were discussed. The interpretation of data, demand details and the aspect that notice in test process, and application of the capillary rise test and downward infiltration test were summarized and analyzed. The demerits and its countermeasures for the method were given.

中文翻译：

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湿锋推进法在砂土对粉质黏土的适用性

摘要 非饱和导水率函数是解决非饱和渗流问题的关键之一，考虑到时间问题，很难通过室内试验获得。本研究通过一系列室内试验，包括毛细管上升试验和向下入渗试验，利用湿锋推进法获得了从砂土到粉质粘土的六种土壤的非饱和导水率函数。讨论了瞬时剖面法与湿锋推进法的异同。对数据的解读、需求细节和试验过程中的注意事项、毛细上升试验和下渗试验的应用进行了总结和分析。给出了该方法的不足及对策。