Liquefaction Study of Coal Refuse by Nuclear Gauges

by David C. Cowherd, Bowser-Morner Associates Inc, Dayton, OH, USA,

Document Type: Proceeding Paper

Part of: Use of In Situ Tests in Geotechnical Engineering


This paper presents a technique for utilizing nuclear gauges to determine density and moisture content continuously throughout refuse embankments and slurry reservoirs. The nuclear measurements are obtained by inserting an access tube to the full depth of the material being tested, inserting a nuclear probe, and making measurements of density and moisture. This technique allows a read-out of density and moisture content for use in a liquefaction potential study without the need for relating density to standard penetration blow counts, cone penetrometer resistance, or other empirical methods of obtaining density.

Subject Headings: Soil liquefaction | Mine wastes | Coal mining | Coal | Material properties | Water content | Reservoirs

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