DOI: dx.doi.org/10.21440/2307-2091-2016-2-28-31
Physical and mechanical properties of technogenic soils on the territory of electrolysis and alumina production pdf
O. Yu. Shirinkin, V. A. Elokhin
The subject of research are technogenic soils. The objective is to study physical and mechanical properties of soils, and, using methods of mathematical statistics, to identify patterns in the distribution of the studied parameters. Territory of research is in the southeastern part of the Kamensk-Ural’sk town and includes the territories of the alumina and electrolysis production. Stratum of foundation soils is inhomogeneous, within it are allocated 14 engineering-geological elements (EGE). Bulk soil represents dumps of natural soils and waste products (slag, concrete, construction waste). This study presents the main statistical indicators of physical and mechanical properties of anthropogenic soils tQ. In order to identify links between the studied parameters and determine the factors that affect their distribution, we performed correlation, cluster and factor analysis. Correlation analysis revealed that in technogenic soils the strongest positive correlation is between such parameters as yield strength – limit lamination (r = 0,83) and yield strength – plasticity (r = 0,84), at the critical value of correlation coefficient equal to 0.36. The revealed correlations allowed us to compile the regression equations. According to the results of cluster analysis, we grouped related pairs of indicators into clusters. The studies revealed that salination of soils of industrial site develops unevenly over the area and depth. Correlation analysis revealed that in technogenic soils tQ the strongest relationship is between the contents of hydrocarbonate and sodium (r = 0,75), in addition, hydrogen has a direct positive relation to sodium and hydrogen index (r = 0.56 and r = 0,51, respectively), and sodium is linked with sulfate (r = 0,62) and chlorine (r = 0,48) at a critical value of the correlation coefficient of 0.48. According to the results of cluster analysis, authors grouped all the components into several clusters. The research of physical and mechanical properties of technogenic soils of basements and foundations of buildings and structures of electrolysis and alumina production of Ural aluminum factory allows us to conclude that the physical and mechanical properties are determined by the composition of soils. Mainly, argillaceous rocks are exposed to salinity, and to a lesser extent – sand and gravel residuals.
Keywords: soil; physical and mechanical properties of soils; electrolytic and alumina production; methods of mathematical statistics.
REFERENCES
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