Flow of Air through Soils

by Geoffrey E. Blight, Prof. of Constr. Materials; Univ. of the Witwatersrand, Johannesburg, South Africa,

Serial Information: Journal of the Soil Mechanics and Foundations Division, 1971, Vol. 97, Issue 4, Pg. 607-624

Document Type: Journal Paper


A proposed method for solution mining of low grade ore will involve the in situ aeration of large volumes of hydraulically deposited silty material. A laboratory investigation of the steady and unsteady flow of air through soil showed that Fick's law gives an adequate description of the flow process and, moreover, has mathematical advantages over the more common D'Arcy's law. The process of in situ air injection was examined theoretically on the basis of Fick's law. Experimental data from field tests were found to be in good qualitative agreement with the predictions of the theory.

Subject Headings: Air flow | Field tests | Soil gas | Unsteady flow | Laws | Mines and mining | Aeration | Hydraulics

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