毛细导水土工布是一种可在非饱和土中发挥排水作用的新型土工合成材料.本文通过模拟降雨试验与毛细水上升试验分别研究了毛细导水土工布的排水性能和抑制毛细水上升的效果.试验结果表明:毛细导水土工布能排出非饱和高岭土中的重力水和毛细水;在含水率12%、压实度90%且铺设毛细导水土工布的高岭土土柱中,毛细水的上升过程是典型的两阶段模式且最大毛细水上升高度为380 mm,即毛细导水土工布有效抑制了毛细水上升.此外,在非饱和高岭土中,毛细导水土工布的有效影响范围分别为其上侧400 mm、下侧100 mm.“,”Wicking geotextile (WG) is considered as a possible countermeasure to reduce water content in unsaturated soil. In this research, rainfall tests were carried out to verify the drainage performance of WG. And capillary rise tests were conducted to study the effect of WG on the prevention of capillary rise. Test results indicated that WG with good drainage performance could drain gravitational and capillary water out of kaolinite soil. For kaolinite soil column with water content of 12% and compaction degree of 90%, the whole process of capillary rise in soil column with a layer of WG was a typical two-stage mode, and the maximum capillary height was about 380 mm, which provided that the WG could work as a barrier to prevent capillary rise effectively. In addition, the total vertical influential regions of WG in kaolinite soil above and below the WG layer were 400 and 100 mm, respectively.