The non-porous layer holds the water in an area called the saturated zone.

不渗透层将水蓄积在一个叫做“饱和层”的地方。

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Both saturated-unsaturated flow drainage experiment without the fine sand layer on the top of the coarse sand and air-water two-phase flow drainage experiment with the fine sand layer were performed.

进行了粗砂上部没有细砂层的均质砂柱的饱和-非饱和流排水实验以及粗砂上部存在细砂层的水气二相流排水实验。

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