Аggregation structure as a factor of relative subsidence loess soil subsidence.


  • T. P. Mokritskaya Dnipropetrovsk National University Oles Gonchar
  • K. O. Samoilich Dnipropetrovsk National University Oles Gonchar
Keywords: aggregate composition, relative subsidence, factor

Abstract

The development of complex shape and volume of deformation at the time of loss of structural strength, fracture structural relationships may be associated with the destruction of aggregates of fine particles. It proved the effect of the aggregate structure of the collapsible loess loam on the values of relative subsidence and its degradation. According to the results of the stochastic modeling results and the inductive definition of indicators of soil properties selected in a variety of engineering-geological conditions, set the composition of factors subsidence degradation. Studied a sample of small and medium volume. Different variants of the task of the independent variables. The analysis of indicators of the content of the various phases of the soil as a factor relative subsidence. It proved the dependence of relative subsidence at the time of the loss of structural strength of the aggregate structure to provide new insight into the processes of subsidence and subsidence degradation. At the time of the loss of structural strength is the destruction of aggregates composed of particles thin clays. At subsequent stages of pressure occurs seal a "new" structure. In all cases the size distribution affects the relative collapsibility values at selected pressure levels. The greatest number of models for all methods of setting the variables obtained for the level of 0.15 MPa. For most subsiding loess loam soil structure of this pressure stage is destroyed. Factors subsidence are also content of particles smaller than 0.001 mm, the total content of aggregates, freedom factor 0.05 – 0.01 mm size particles.

Author Biographies

T. P. Mokritskaya, Dnipropetrovsk National University Oles Gonchar
Dnipropetrovsk National University Oles Gonchar, Head Department of Geology and Hydrogeology, prof., Dr.  Geol. Sciences, prof.
K. O. Samoilich, Dnipropetrovsk National University Oles Gonchar
assistant Department of Geology and HydrogeologyDnipropetrovsk National University Oles Gonchar

References

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Published
2016-12-28
How to Cite
Mokritskaya, T., & Samoilich, K. (2016). Аggregation structure as a factor of relative subsidence loess soil subsidence. Journal of Geology, Geography and Geoecology, 24(2), 92-97. https://doi.org/https://doi.org/10.15421/111636