Геоэкология. Инженерная геология. Гидрогеология. ГеокриологияГеоэкология. Инженерная геология. Гидрогеология. Геокриология0869-7809The Russian Academy of Sciences1880810.31857/S0869-78092019619-29Research ArticleGeological conditions of suffosion processes development and their acitivity at Sal-Don neotectonic upland (Rostov NPP area)MakarovaN. V.<p>Geological Faculty</p>makarovanat@yandex.ruGusel’tsevA. S.gouseltsev@secnrs.ruSukhanovaT. V.<p>Geological Faculty</p>
<p> </p>makarovanat@yandex.ruMakeevV. M.vmakeev@mail.ruLomonosov Moscow State UniversityResearch and Technological Center for Nuclear and Radiation SafetySergeev Institute of Environmental Geoscience, Russian Academy of Sciences21122019619292112201921122019Copyright © 2019, Russian academy of sciences2019<p>Suffusion processes and their influence on the stability of the Rostov NPP site are investigated. Geological, tectonic, geomorphological, hydrogeological conditions, as well as anthropogenic factors affect the development and intensification of suffusion. These conditions and factors include the following: predominance of Pliocene and Quaternary sands in the geological cross-section; the presence of clay aquiclude underlying sandy deposits; natural seasonal and human-induced fluctuations of the water level in the Tsimlyansk reservoir; as well as pumping of groundwater. The buried relief in the shape of a slope dissected by erosional gullies are also of great importance. These erosional depressions are probably channels, along which sand is removed to the Tsimlyansk water reservoir. It is suffusion that may be the reason of surface subsidence that causes deformation of ground basements and inclinations of some engineering structures at NPP. Recent tectonic conditions control the formation of active zones and fracturing in the mantle deposits favoring percolation of surface water. Suffusion amplified by tectonic and technogenic factors results in the subsidence of soil basement in some places at the NPP site, displacement of reference marks, and inclination of engineering structures.</p>suffusionwater saturationsubsidenceburied landformsgeodynamic active zonerecent stressesnuclear power plant unitsсуффозияводонасыщенностьпроседанияпогребенные формы рельефагеодинамически активные зонысовременные напряженияэнергоблоки атомной станции[Geologicheskaya karta masshtaba 1: 200 000. List L-38-1. Seriya Kumo-Manychskaya. Obyasnit. zapiska. [Geological map scale 1: 200 000. Sheet L-38-1. The Kuma-Manych series. Explanatory note]. Orekhova, V.M., Podgorodnichenko, V.I., Tomkovich, I.N., Kozhukhova, L.I., Eds., Moscow, Gosgeoltekhizdat, 1962, 53 p. (in Russian)][Geologicheskaya karta masshtaba 1: 200 000. List L-38-VI1. Seriya Kumo-Manychskaya. Obyasnit. zapiska. [Geological map scale 1: 200 000. Sheet L-38-VI1. The Kuma-Manych series. Explanatory note]. Rodzianko, G.N., Deino, G.V., Prokopenko, S.T., Eds., Moscow, Nedra, 1964, 52 p. (in Russian)][Goretskii, G.I. Paleopotamologicheskie eskizy` Paleo-Dona i Pra-Dona. [Paleopotamological sketches of the Paleo-Don and Pra-Don River]. Minsk, Nauka i tekhnika, 1982, 248 p. (in Russian)][Inzhenernaya geologiya SSSR. Platformennye regiony Evropeiskoi chasti SSSR [Engineering geology of the USSR. Platform regions of the European part of the USSR]. Sergeev, E.M., Komarov, I.S., Trofimov, V.T., Eds., Moscow, Nedra Publ., book. 1, 1991, 271 p. (in Russian)][Noveishaya tektonika i geodinamika: oblast` sochleneniya Vostochno-Evropeiskoi platformy i Skifskoi plity [Neotectonics and geodynamics: the East European platform and the Scythian plate conjunction area]. Moscow, Nauka, 2006, 206 p. (in Russian).][Pendin, V.V., Gusel’tsev, A.S., Fomenko, I.K., Zerkal, O.V., Sirotkina, O.N. Otsenka suffozionnoi opasnosti ploshchadki AES i eyo okrestnostei. Opasnye dlya stroitel`stva geologicheskie protsessy. [Assessment of suffusion hazard at a NPP site and its vicinity. Geological processes hazardous to construction]. Proc. Intern. Workshop dedicated to the 70th birthday of Dr. Sci. V. P. Khomenko. Moscow, MISI-MGSU Publ., 2019, pp. 22-29. (in Russian)][Khomenko, V.P. Suffoziya. Prirodnye opasnosti Rossii. Ekzogennye geologicheskie protsessy. [Suffosion. Natural hazards of Russia. Exogenous geological processes]. Moscow, Kruk Publ., 2002, pp. 158-173. (in Russian)]