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Analysis of Soil Vacuum Extraction using Analytical Solution of Groundwater Flow  

Kim, Min-Hwan (호남대학교 토목환경공학과)
Lee, Hak (호남대학교 대학원 토목환경공학과)
Han, Dong-Jin (호남대학교 대학원 토목환경공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.9, no.5, 2009 , pp. 139-145 More about this Journal
Abstract
An analytical solution of groundwater flow is applied to design soil vacuum extraction for removing volatile organic compounds from the unsaturation zone. The governing equation of gas or vapor flow in porous media is nonlinear in that gas density depends on gas pressure. A linear equation suggested by researcher is similar to that of groundwater flow. The pressure drawdowns of confined and leaky aqufiers are calculated using Massmann's field data, and the pressure drawdowns are compared. A solution of Theis equation calculated by Massmann is modified using GASSOLVE9 program in this paper. The pressure drawdown using Hantush's analytical solution for leaky aquifer also compared to that of Massmann. Hantush's analytical solution gives good approximations to pressure drawdown.
Keywords
vacuum extraction; pressure drawdown; Theis equation; confined aqufiers; leaky aqufier; groundwater flow;
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