Geology, geography and global energy

Scientific and Technical Journal

Engineering and geological features loess north-western Caspian

2014. №3, pp. 109-111

Kalashnik Zhanetta V. - C.Sc. in Geological and Mineralogical Associate Professor, Astrakhan State Technical University, 16 Tatishchev st., Astrakhan, 414025, Russian Federation,

Subsidence of loess soils is a factor in the site selection and placement of construction of engineering structures. The origin and formation of loess soils in different years were considered by many Russian and Soviet scientists. The paper discusses the loess soils of Quaternary deposits of the Caspian depression whose power varies widely, from a few centimeters to tens of meters. Noted that the Upper Quaternary loess rocks within the North-West Caspian have a certain geomorphological confinement: watersheds, high terraces above the floodplain and Khvalynsk plain. Primers Middle Quaternary age, having met subsidence near Elista. Described by their physical characteristics and anisotropy. Depending on the type of ground subsidence defined conditions subsidence. Within the study area are common: I type subsidence of soil conditions in the Volgograd region and type II subsidence is set on the hills Baer in the Astrakhan region.

Key words: грунт, инженерно-геологические условия, лесс, просадка, мощность, пористость, тип, супесь, суглинок, бытовое давление, фильтрация, soil, geotechnical conditions, loess, drawdown capacity, porosity, type, sandy loam, loam, domestic pressure filtration