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DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

DEPENDENCE OF SUFFOSION STABILITY OF SANDY SOILS OF VARIOUS GENESES ON THE TYPE OF FILTRATE

Vestnik MGSU 5/2012
  • Potapov Ivan Aleksandrovich - Scientific and Research Institute of Emergency Healthcare named after N.V. Sklifosovskiy engineer, Scientific and Research Institute of Emergency Healthcare named after N.V. Sklifosovskiy, ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Shimenkova Anastasiya Anatol'evna - Moscow State University of Civil Engineering (MGSU) engineer, Department of Engineering Geology and Geoecology, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Potapov Aleksandr Dmitrievich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Head, Department of Engineering Geology and Geoecology, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 79 - 86

Results of calculations and experimental researches of suffosion stability of sandy soils are provided in the article. The authors have assessed the prospects for the application of standard methodologies to demonstrate the need to take account of the filtrate properties in the course of projecting potential suffusion process development patterns typical for sandy soils. The principal attention must be driven to the value of the kinematic viscosity of filtered liquids. Any assessment of filtration-related interaction of the flow of liquid with sandy soils must be backed by the gradation analysis of soils and the analysis of their homogeneity, as well as the mineralogical and morphological analysis. The morphological study of sands of various geneses, performed hereunder, is based on the methodology that takes account of both the shape of sand particles and the structure of their surface.
The proposed methodology makes it possible to assess extensive sand specimen rather than separate sand particles to assure the representative sampling to assure the accuracy of the morphological analysis. The authors provide the data that cover the research of sands of various geneses demonstrating varied granulometric and mineral composition, as well as various morphological peculiarities of correlation with the filtrates that have different values of kinematic viscosity. The methodological research completed by the authors has indicated an urgent need to perform laboratory and field researches of suffosion instability of sandy soils in varied geoecological environments typical for urban lands exposed to anthropogenic pollutions.

DOI: 10.22227/1997-0935.2012.5.79 - 86

References
  1. Rekomendatsii po metodike laboratornykh ispytaniy gruntov na vodopronitsaemost’ i suffozionnuyu ustoychivost’. P 12-83 [Recommendations concerning the Methodology of Laboratory Testing of Waterpermeability and Suffosion Stability of Soils. P 12-83]. Leningrad, VNIIG [Institute Hydroproject], 1983.
  2. Spiridonov V.N. Gidravlicheskie kharakteristiki otkrytogo potoka v pronitsaemom rusle [Hydraulic Characteristics of an Open Stream in a Nontight Channel]. Moscow, Moscow Institute of Civil Engineering, 1985.
  3. Vil’ner Ya.M. Spravochnoe posobie po gidravlike, gidromashinam i gidroprivodam [Handbook of Hydraulics, Hydraulic Machines and Hydraulic Drivers]. Moscow, Mashizdat Publ., 1989.
  4. GOST 25100—95. Grunty. Klassifikatsiya. [All-Russian State Standard 25100—95. Soils. Classification]. Moscow, Gosstroy Publ., 1996.
  5. Potapov A.D. Morfologicheskoe izuchenie peskov razlichnogo genezisa v inzhenernogeologicheskikh tselyakh [Morphological Research of Sands of Various Geneses for Engineering Geology Purposes]. Moscow, PNIIIS [Production, Scientific and Research Institute of Engineering Surveying in Construction], 1982.

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AQUATIC SYSTEM AS THE SUBJECT OF AQUATIC ECOLOGY AND THE STARTING POINT OF THE WATER TREATMENT TECHNOLOGY

Vestnik MGSU 2/2012
  • Alekseev Evgenij Valer'evich - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Head of Department of Water Supply and Aquatic Ecology 8 (499) 183-54-56, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 140 - 144

Discrete properties of substances found in the water can provide exhaustive information about the substances contained in it. However, they do not provide any information about the interaction between the substances and the water, or between themselves, or the overall properties of the aquatic system. Therefore, they cannot serve as the basis for the systemic approach to development of efficient water treatment technologies.
The author's suggestion is to introduce the term "aquatic system" as a description of the properties of natural and sewerage water. An aquatic system represents a collection of interconnected substances and phenomena in the aquatic medium. Therefore, natural and sewerage water represent aquatic systems, or mixtures of substances that have different origins, that interact with one another on a non-stop basis, and that are interrelated, and that interact with the water at one and the same time. Primary features of aquatic systems are considered in the article, including genesis, stability, and localization. Secondary features of aquatic systems, including their aggregate state, their biotic state, and their chemical composition.
The research of aquatic systems of natural and sewerage waters, their structure and interrelations identifies the top-priority subject of research in the aquatic ecology. Therefore, the subject matter of the aquatic ecology represents the area of research, learning and systematization of features and properties of natural and man-made aquatic systems. This area of research dives way to a new trend of the methodology of modeling and optimization of natural and sewerage water treatment technologies. Aquatic ecology is to develop the principal provisions aimed at the improvement of water treatment technologies based on the properties of aquatic systems.

DOI: 10.22227/1997-0935.2012.2.140 - 144

References
  1. Shvecov V.N., Morozova K.M., Mjasnikov I.N. and others. Klassifikator tehnologij ochistki stochnyh vod [Classified Technologies of Sewerage Water Treatment Technologies]. Vodosnabzhenie i sanitarnaja tehnika [Water Supply and Sanitation Machinery], 2004, Issue # 5, pp. 2—4.
  2. Zhurba M.G., Sokolov L.I., Govorova Zh.M. Vodosnabzhenie. Proektirovanie sistem i sooruzhenij [Water Supply. Design of Systems and Structures], methodological guide, edited by professor Zhurba M.G. Moscow, ASV, 2004, volume 2.
  3. Zhurba M.G., Nechaev A.P., Ivleva G.A. and others. Klassifikatory tehnologij ochistki prirodnyh vod [Classifiers of Natural Water Treatment Technologies]. Moscow, GPI Sojuzvodokanalproekt, 2000, 118 p.

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