Scientific journal
Scientific Review. Geographical Sciences

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ABOUT THE INFLUENCE OF THE STRUCTURE OF ALLUVIAL COARSE DISINTEGRATED ROCK GROUNDS ON THEIR ENGINEERING-GEOLOGICAL PROPERTIES

Осовецкий Б.М., Копылов И.С.
The methods of fractional granulometric analysis of alluvial deposits and ways of result processing are considered. The main features of a detailed framework of a macrofragmental alluvium and its impact on geotechnical properties of soils are described. The criteria characterizing the change of the detailed structure of alluvium in the direction of the mountains to the plains are analyzed. It is shown that a large role in shaping the structure of alluvium and engineering-geological properties plays block tectonics and neotectonics, which is manifested through different geodynamic (neotectonic) activity. It is established that within actively rising blocks of the earth’s crust (anticlinoriums, arches, uplifts) associated with the areas with high geodynamic activity, slope and the rate of water flow in the rivers increase and larger in size debris gravel-boulder alluvium is formed. When crossing the relatively falling blocks (synclinoriums, depression), dedicated to areas with low geodynamic activity, slope and speed of flow decreases, creating less of large size debris gravel-pebble alluvium.