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Infiltration Characteristics of Tracer Wetting Front through Effective Pores of Unsaturated Soil  

Kim, Man-Il (Geological & Environmental Hazards Division, KIGAM)
Nishigaki, Makoto (Dept. of Civil Engineering, Okayama University)
Publication Information
The Journal of Engineering Geology / v.17, no.1, 2007 , pp. 41-47 More about this Journal
Abstract
Geotechnical Phenomena such as landslide, groundwater recharge and groundwater fluctuation due to rainfall can be explain to use a dielectric response and infiltration variation by the movement of a wetting front in the subsurface. The infiltration of a wetting front is infiltrating to the connected pores which are distributed in unsaturated soil. In this study we carried out to laboratory experiment of a vertical infiltration column test using ethanol mix-ing tracer which has same the specific gravity of water. All physical values are detected to use a variation of dielectric constant and calculated to use a dielectric mixing model and tracer test model. This dielectric method measured by each dielectric constant of geological soil porous materials should be of for the geotechnical information and useful a field monitoring technique for detecting the variations of the volumetric water content and the wetting front, which are insignificant the key parameter to understanding the landslide by rainfall.
Keywords
landslide; rainfall; wetting front; ethanol mixing tracer; effective porosity;
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Times Cited By KSCI : 1  (Citation Analysis)
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