Experimental infrared-radiometric investigations of stress variations on a borehole face in a model of the soil mass

Autor:	D. I. Blokhin, V. I. Sheinin, V. F. Sidorchuk
Rok vydání:	2004
Předmět:	Radiometer Borehole Soil Science Ocean Engineering Soil science Radiation Geotechnical Engineering and Engineering Geology Stress (mechanics) General Energy Volume (thermodynamics) Soil water Geotechnical engineering Geology Strain gauge Intensity (heat transfer) Water Science and Technology
Zdroj:	Soil Mechanics and Foundation Engineering. 41:200-204
ISSN:	1573-9279 0038-0741
DOI:	10.1007/s11204-004-0002-7
Popis:	A procedure for, and results of experimental investigations performed to substantiate the effectiveness of the method of infrared (IR) radiation in diagnosing changes in the stress state of soils over time are presented. The construction of a “large-scale” bench is described for the alternating loading of a relatively large (of the order of 0.35 m3) volume of soil. Variations in the stress state over time in the near-face zone of a “borehole,” which is arranged in a model of the soil mass, are recorded using synchronous recordings of signals from an IR radiometer and load-cell strain gages. The elastic nature of stress variations on the face of the borehole in an unsaturated sandy soil is revealed during alternating-sign stress variations “at infinity.” It is indicated that data derived from noncontact IR measurements will make it possible to record accurately moments of jumpwise stress variations in the soil “mass,” and evaluate their intensity.
Databáze:	OpenAIRE
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