FIELD: mining.
SUBSTANCE: method for determining air content in frozen soil consists in the fact that soil sample is dried after it is taken, weighed and its volume, as well as total humidity and quantity of non-frozen water is determined. Then, volume of solid soil particles, density of dry soil and density of solid particles is determined. After that, relative air content in thawed soil is determined. At that, calculation of air content in thawed soil is carried out as per the formula where Va - volume of air in frozen pound sample; V - sample volume; Ww - humidity as to unfrozen water; ρw - water density; ρi - density of ice fixed in soil. Besides, density of dry soil is determined as per the following formula: where md - mass of dry soil sample; density of solid particles is determined as per the following formula: where Vd - volume of solid sample particles; and total soil humidity is determined as per the following formula: where m - mass of the soil sample.
EFFECT: enlarging application field owing to obtaining the possibility of accurate air content measurement, and as a result, improving the evaluation of soil deformation properties.
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Authors
Dates
2013-03-27—Published
2011-09-12—Filed