Protective Properties of Fractured–Porous Aeration Zone in the Case of Groundwater Pollution by Liquid Hydrocarbons

The problem of migration of a hydrocarbon liquid through aeration zone to groundwater table is formulated and solved analytically. The aeration zone is represented by fractured–porous rocks, and the pollution source is a shallow pool that has formed due to a spill. Two schemes of liquid infiltration from fractures into rock blocks—piston-like and kinetic—are considered. The trajectory of pollution front in fractures and its distribution in the rock blocks are found.