Analýza základových půd ve vztahu k inženýrskogeologickým rajonům.

Abstract

The main aim of the dissertation thesis was to analyse the foundation soils in relation to engineering-geological zones. The first partial objective was to search information and process the theoretical part for the major limiting conditions affecting the topic of the dissertation thesis, thus characterising the point of view of the studied issue. The theoretical part deals with the maps of the engineering-geological zoning and the theory of the classification classes of foundation soils. The next partial objective was an overlay analysis of the engineering-geological zones and related foundation soil classes, with a subsequent comparative analysis of the obtained results. This concerns the information related to the engineering-geological zones, classification systems of foundation soils based on the earlier standard ČSN 73 1001 Foundation soil under spatial foundations, and on the valid standard ČSN EN ISO 14688-2 Geotechnical survey and testing - Identification and classification of soil - Part 2: Principles for a classification. Based on the acquired data, record sheets were prepared for each engineering-geological zone in the locality of interest. The research herein shows that within the basic grain-size groups of gravely, sand and fine-grained foundations soils the highest similarity of occurrence of engineering-geological zones is in gravely soils. In the foundation soil class of sand soils there is an intermediate similarity, and in fine-grained foundation soil classes there is a low similarity of occurrence of various engineering-geological zones. The results of the dissertation thesis show that within the engineering-geological zones there is an extreme variability in the foundation soil classes. There are engineering-geological zones that have only one class, but on the other hand, there are some engineering-geological zones that have as many as 14 types of foundation soil classes. As for the distribution of workability classes, the most wide-spread are the workability classes in the interval from 2 to 4. The scientific contribution of the dissertation thesis is the knowledge on the relation of the distribution of a particular foundation soil class character and workability class in the different types of geological structure in the selected locality of interest in the Moravian-Silesian Region. The used methodology may be applied in any other locality of the Czech Republic.