First, engineers drill a well several kilometers into permeable rock like sandstone or basalt.
首先，工程师在砂岩或玄武岩等可渗透岩石中钻几公里的井。
Geologic | 地理地质类科普
They’re really permeable rock masses that easily store groundwater and act as a water supply.
它们是真正具有渗透性的岩体，可以很容易地储存地下水并充当供水。
英语百科
Permeability (earth sciences)
（重定向自Permeable rock）
Permeability in fluid mechanics and the earth sciences (commonly symbolized as κ, or k) is a measure of the ability of a porous material (often, a rock or an unconsolidated material) to allow fluids to pass through it.
The permeability of a medium is related to the porosity, but also to the shapes of the pores in the medium and their level of connectedness.