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介绍了三峡花岗岩体裂隙毛管压力－饱和度试验。试验采用互不溶混驱替法。试验结果表明，在渗流基本特征方面，裂隙非饱和渗流毛管压力－饱和度关系曲线与空隙介质水分特征曲线具有相似性，如毛管压力－饱和度关系曲线的滞后现象；湿润流体（水）的排泄曲线具有进气压和束缚水饱和度；非湿润流体的吸湿曲线具有残余饱和度。这种相似性表明，孔隙介质非饱和渗流的研究成果可用于裂隙非饱和渗流，孔隙介质水分特征曲线的解析模型，可用于研究裂隙毛管压力－饱和度关系曲线和拟合毛管压力－饱和度排泄曲线的试验数据。
The capillary pressure-saturation test of the Three Gorges granite body is introduced. The test uses the immiscible flooding method. The experimental results show that capillary pressure-saturation curve of unsaturated fracturing fluid has similarities with pore water characteristics, such as the hysteresis of capillary pressure-saturation curve. The excretion of wet fluid (water) The curve has intake pressure and irreducible water saturation; the hygroscopic curve of the non-wetting fluid has residual saturation. This similarity indicates that the research results on unsaturated seepage in porous media can be used in the analytical model of unsaturated capillary seepage and pore water vapor characteristic curves, which can be used to study capillary pressure-saturation curve and fit capillary pressure-saturation excretion Curve test data.