Doboku Gakkai Ronbunshuu C
Online ISSN : 1880-604X
ISSN-L : 1880-604X
Paper (In Japanese)
AN EVALUATION METHOD ON EFFECTIVE POROSITY AND FLOW DIMENSION BY HIGH VISCOSITY FLUID INJECTION
Takuma HASEGAWAYasuharu TANAKAMakoto NISHIGAKI
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JOURNAL FREE ACCESS

2007 Volume 63 Issue 1 Pages 163-173

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Abstract
Contaminant transport is one of the important issues to assess geoenvironment. The groundwater is the most important transport media. Therefore, effective porosity and flow dimension related to groundwater flow are key parameters to evaluate the contaminant transport. We propose new method to estimate these parameters by using single hole injection test with high viscosity fluid. In the theoretical part of this paper, we derive the flow equations of high viscosity fluid under both constant flux injection and constant pressure injection for arbitrary dimensions. Standard curve are derived theoretically. Based on these standard curves, we illustrate parameter estimation procedure using graphical method of superposition. Using this method, we can estimate flow dimension, effective porosity and extent of flow zone related to groundwater flow.
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© 2007 by Japan Society of Civil Engineers
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