| 摘要 |
FIELD: construction.SUBSTANCE: invention relates to construction, soil mechanics, engineering geology, mining, in particular, to soils laboratory tests for determination of their physical and mechanical properties. Summary: soil sample preparation is performed, sample installation into instrument clip, creation of axial pressure on sample and measuring parameters characterizing soil sample condition. For determining of soil strength characteristics in process of axial active σpressure growth side jet σpressure is also measured during soil sample compression, for detection of axial pressure values exceeding structural strength, controlled change of mratio increments between side Δσand axial Δσand with of axial pressure σarbitrary value, when ratio of m= m= m= m = const, testing is stopped with determination of internal friction angle: soilstructural strength:and adhesion:where σ, σ- current values of pressures, and σ>σ; m is soil lateral pressure factor; at limit state by Coulomb-Mohr with σ>σ.EFFECT: technical result is possibility to considerably reduce laboratory tests production costs to determine mechanical properties of soils, reduce labor costs, as well as increase reliability of soil strength characteristics determining.3 cl, 3 dwg |
