DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

INFLUENCE OF PROPERTIES OF RIVER SOILS ON RIVER BED MOVEMENT

Vestnik MGSU 9/2012
  • Borovkov Valeriy Stepanovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Department of Hydraulics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; mgsu-hydraulic@ yandex.ru; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Volynov Mikhail Anatolevich - All-Russian Research Institute of Hydraulic Engineering and Land Reclamation named after A.N. Kostyakov (VNIIGIM) Candidate of Technical Sciences, Associate Professor, Head of Department of Water Resources Management, All-Russian Research Institute of Hydraulic Engineering and Land Reclamation named after A.N. Kostyakov (VNIIGIM), 44 Bolshaya Akademicheskaya st., Moscow, 127550, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Markova Irina Mikhailovna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Hydraulic Engineering and Water Resources Management 8 (499) 261-39-12, 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 .
  • Suykova Natalya Valerevna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Hydraulic Engineering and Water Resources Management 8 (499) 261-39-12, 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 75 - 82

The authors discuss interaction between the river flow and the formation of the river bed as a
single dynamic self-regulating system. Changes in the physical-mechanical properties of river bed
sediments occurring under the influence of natural and anthropogenic factors, and the impact of
these changes produced on the processes of sedimentation and erosion of river channels are considered
in the article. Free and constrained precipitation of particles of different density, shape and
size are analyzed. A universal formula of the hydraulic resistance coefficient, applicable to particles
in the course of their sedimentation into the liquid, which takes account of both the front resistance
and the surface friction, is proposed. The authors also propose a formula that takes account of the
effect of concentration produced onto the rate of deposition. The experimental data reflecting the
impact of fine sediment on the viscosity and initial shear strength of the water and soil mixture are
considered. The results make it possible to improve the accuracy of calculations of channel processes
for the purpose of design of hydraulic structures, regulation of waterways and monitoring of
water bodies.

DOI: 10.22227/1997-0935.2012.9.75 - 82

References
  1. Velikanov M.A. Ruslovoy protsess [River Bed Process]. Moscow, State Publishing House of Physical and Mathematical Literature, 1958, 395 p.
  2. Simons D., Miller K. Sediment Discharge in Irrigation Canals. Colorado State University. Fort Collins. Colorado, 1962.
  3. Lelyavskiy S. Vvedenie v rechnuyu gidravliku [Introduction in River Hydraulics]. Leningrad, Gidrometeoizdat Publ., 1961, 228 p.
  4. Shlikhting G. Teoriya pogranichnogo sloya [Theory of the Boundary Layer]. Moscow, Nauka Publ., 1969, 742 p.
  5. Borovkov V.S., Mayranovskiy F.G. Aerogidrodinamika sistem ventilyatsii i konditsionirovaniya vozdukha [Aerohydrodynamics of Ventilation and Air Conditioning Systems]. Moscow, Stroyizdat Publ., 1978, 115 p.
  6. Levin B.M. Issledovaniya protsessov osazhdeniya melkodispersnykh suspenziy v usloviyakh malykh kontsentratsiy [Research of Sedimentation of Fine Suspensions in the Event of Their Small Concentrations]. Moscow, Sbornik trudov MIIT [Proceedings of Moscow Institute of Railroad Engineering], no. 176, 1963, pp. 18—23.
  7. Lyashchenko P.V. Gravitatsionnye metody obogashcheniya [Gravitational Methods of Concentration of Ores]. Moscow – Leningrad, Gostoptekhizdat Publ., 1940, 360 p.
  8. Evilevich A.Z. Raschet i proektirovanie iloprovodov [Calculation and Design of Silt Transportation Pipelines]. Moscow, MKKh RSFSR Publ., 1962, 114 p.
  9. Markova I.M. Vnutriruslovye geoekologicheskie protsessy v vodotokakh na urbanizirovannykh territoriyakh [River Bed Processes in Urban Territories]. Moscow, 2005, 24 p.
  10. Mirtskhulava Ts.E. Razmyv rusel i metodika otsenki ikh ustoychivosti [Erosion of River Beds and Methodology of Assessment of Their Stability]. Moscow, Kolos Publ., 1967, 177 p.
  11. Deryagin B.V. Poverkhnostnye yavleniya i svoystva gruntov i glin [Surface Phenomena and Properties of Soils and Clays]. Moscow, Izd-vo AN SSSR [Publishing House of the Academy of Sciences of the USSR], 1956, no. 16.
  12. Lifshits E.M. Teoriya molekulyarnykh sil prityazheniya mezhdu tverdymi telami [Theory of Molecular Forces of Attraction between Solid Bodies]. Zhurnal eksperimental’noy i teoreticheskoy fi ziki [Journal of Experimental and Theoretical Physics]. 1955, vol. 29, pp. 94—112.
  13. Borovkov V.S. Priroda sil stsepleniya v vodonasyshchennykh peschanykh gruntakh [Coalescence between Particles of Water Saturated Sandy Soils]. Collected papers of Moscow Institute of Civil Engineering. 1987, pp. 33—40.

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An alternative approach to assessing feasibility of flushing sediment from reservoirs

Vestnik MGSU 6/2014
  • Elfimov Valeriy Ivanovich - Peoples Friendship University of Russia (PFUR) Candidate of Technical Sciences, Associate Professor, Department of Hydraulics and Hydraulic Engineering Structures, Peoples Friendship University of Russia (PFUR), 6 Miklukho-Maklaya str., Moscow, 117198, Russian Federation; +7 (495) 9520831; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Khakzad Hamid - Peoples Friendship University of Russia (PFUR) postgraduate student, Department of Hydraulics and Hydraulic Engineering Structures, Peoples Friendship University of Russia (PFUR), 6 Miklukho-Maklaya str., Moscow, 117198, Russian Federation; +7 (495) 9520831; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 126-136

Effective parameters on feasibility of sediment flushing through reservoirs include hydrological, hydraulic, and topographic properties of the reservoirs. In this study, the performances of the Decision tree forest (DTF) and Group method of data handling (GMDH) for assessing feasibility of flushing sediment from reservoirs, were investigated. In this way, Decision tree Forest, that combines multiple Decision tree, used to evaluate the relative importance of factors affecting flushing sediment. At the second step, GMDH deployed to predict the feasibility of flushing sediment from reservoirs. Results indicate that these models, as an efficient novel approach with an acceptable range of error, can be used successfully for assessing feasibility of flushing sediment from reservoirs.

DOI: 10.22227/1997-0935.2014.6.126-136

References
  1. Muhammad A.C., Habib U.R. Worldwide Experience of Sediment Flushing Through Reservoirs. Journal of Engineering & Technology Mehran University Research. 2012, no. 31 (3), pp. 395—408.
  2. Morris G., Fan J. Reservoir Sedimentation Handbook; Design and Management of Dams, Reservoirs and Watersheds for Sustainable Use. New York, McGraw Hill, 1997.
  3. D’Rohan W. The Silting Up of Reservoirs and Canals and Some Methods for Preventing Same. Engin. and Contract. 1911, vol. 35, pp. 56—58.
  4. White W.R. A Review of Current Knowledge World Water Storage in Man-Made Reservoirs, FR/R0012. The Listons, Liston Road, Marlow, Foundation for Water Research Allen House, 2005, p. 40.
  5. Qian N. Reservoir sedimentation and slope stability; technical and environmental effects. Fourteenth International Congress on Large Dams, Transactions. Rio de Janeiro, Brazil, 1982, 3-7 May, vol. III, pp. 639—690.
  6. Ackers P. and Thompson G. Reservoir sedimentation and influence of flushing. In Sediment Transport in Gravel-bed Rivers, C.R. Thorne, J.C. Bathurst, and R.D. Hey, eds, John Wiley & Sons, Chichester, 1987, pp. 845—868.
  7. Mahmood K. Reservoir Sedimentation: Impact, Extent, and Mitigation. World Bank Technical. Washington, D.C., 1987, рр. 71, 118.
  8. Atkinson E. The Feasibility of Flushing Sediment from Reservoirs. HR Wallingford, UK, 1996, Report no. OD 137, pp. 21.
  9. Lai J.S. and Shen H.W. Flushing sediment through reservoirs. Journal of Hydraulic Research. 1996, vol. 34, no. 2, pp. 237—255.
  10. Kunwar P.S., Shikha G., Premanjali R. Identifying Pollution Sources and Predicting Urban Air Quality Using Ensemble Learning Methods. Atmospheric Environment. 2013, vol. 80, pp. 426—437. DOI: 10.1016/j.atmosenv.2013.08.023.
  11. Efron B. Bootstrap Methods: another Look at the Jackknife. The Annals of Statistics. 1979, vol. 7, no. 1, pp. 1—26.
  12. Erdal H.I., Karakurt O. Advancing Monthly Stream Flow Prediction Accuracy of CART Models Using Ensemble Learning Paradigms. Journal of Hydrology, 2013, vol. 477, pp. 119—128. DOI: 10.1016/j.jhydrol.2012.11.015.
  13. Wang G., Hao J., Ma J., Jiang H. A comparative assessment of ensemble learning for credit scoring. Expert Systems with Applications. 2011, vol. 38, no. 1, рр. 223—230.
  14. Ivahnenko A.G. Polynomial Theory of Complex Systems. IEEE Transactions on Systems, Man, and Cybernetics. 1971, pp. 364—378. DOI: 10.1109/TSMC.1971.4308320.
  15. Farlow SJ, editor. Self-organizing Method in Modeling: GMDH Type Algorithm. Marcel Dekker Inc., New York, 1984.

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INFLUENCE OF SEDIMENT SIZE ON LOCAL SCOUR DUE TO OBLIQUE WAVES NEAR BREAKWATER

Vestnik MGSU 9/2016
  • Sharova Vera Vladimirovna - Moscow State University of Civil Engineering (National Research University) (MGSU) postgraduate student, Department of Hydraulic Engineering, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe Shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kantarzhi Igor’ Grigor’evich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, acting chair, Department of Hydraulic Engineering, Moscow State University of Civil Engineering (National Research University) (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 108-118

The existing regulatory documents on estimation of wave scours behind vertical-type structures take account of only frontal wave arrival. Though in most cases of real structures waves arrive at an angle to a structure. The kinematics of the formed wave field and as a result the interaction with the structure and the foundation soil differ from that of frontal waves. The work is devoted to investigation of local scour due to the influence of oblique waves. The main aim of the article is to define the features of the formation of the local scour due to oblique waves in front of breakwater and to define its difference from local scour caused by frontal waves. In order to study a local scour experiments have been conducted in a wave basin. As a result of the experiments the shape and depth of the scour were obtained. Significant differences of scour formation caused by frontal and oblique waves at the breakwater were found out. The scoured hole caused by oblique waves looks like a line directed along the walls, in contrast to the scour caused by the influence of the standing waves. It was found out that in case of smaller angle of wave arrival to the breakwater the depth and width of scoured hole increase. The experimental investigations also showed that the size of soil particles influence the formation of scour hole.

DOI: 10.22227/1997-0935.2016.9.108-118

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