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冻结滞水指因冬季的冻结作用在包气带冻土层内形成的季节性固态地下水。在冻结期间包气带水具有明显的倒置分带性：（１）冻结滞水带；（２）过渡水分带；（３）支持毛管水汽化输水带。冻结滞水含水率比冻结前一般增加２０％～３０％，相当于给水度为０．０６的含水层中潜水位下降２．５４～３．７４ｍ时给出的水量。冻结滞水是干旱、半干旱地区农、林、牧业生产持续发展的可贵的水资源之一。
Frozen stagnant water refers to the seasonal solid groundwater formed in the frozen zone of the aerated zone due to the freezing effect in winter. During the freezing period, the aeration zone water has obvious inverting zonation: (1) freezing the stagnant water zone; (2) the transitional moisture zone; and (3) supporting the capillary water vaporization water conveyance zone. The water-holding rate of freezing stagnant water generally increases by 20% -30% compared with that before freezing, which is equivalent to the water quantity given when the submersible water level in the aquifer with a water supply of 0.06 decreases by 2.54-3.74m. Frozen stagnant water is one of the valuable water resources for sustainable development of farming, forestry and animal husbandry in arid and semi-arid areas.