SIMULATION OF THE SOIL WASHING-OUT AND CAVITATION OUTSIDE THE CONCRETE CASING IN THE PROCESS OF SPILLWAY OPERATION

Details

Parent Category: Geo-Technical Mechanics, 2014

Category: Collection of scientific papers «Geotekhnicheskaya Mekhanika» Issue 114

UDC 622.839.44.001.57:691.32:532:533

Authors:

S.I. Skipochka, D.Sc. (Tech.), Professor

V.V. Krukovskaya, D.Sc. (Tech.), Senior Researcher

(IGTM NAS of Ukraine),

S.D. Grebenyuk, Ph.D. (Tech.), Engineer

(JSC «Donetskstal»)

Abstract.

Chemical and mechanical processes of the buried concrete elements breakage, water filtration through the damaged concrete into enclosing soil, and cave formation due to the soil washing-out were studied with the help of computer simulation. The authors created several mathematical models which describe: moisture diffusive transfer in the porous structure of concrete with taking into account water participation in the chemical reactions; changes in the stress state of the buried concrete constructions and strength retrogression caused by high humidity and corrosive medium; and water filtration through the damaged concrete into enclosing soil. The models adequacy was verified by a set of full-scale experiments. The data obtained by the calculations were successfully applied during reconstruction of hydraulic objects in the mine Colliery Group «Pokrovskoye».

Keywords:

simulation, finite elements method, water transfer inside the concrete construction, concrete permeability, stress state, water filtration, soil washing-out and cavity formation.

References:

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2. Punagina, U.V. (2010) Diffuzionnyiy i kapillyarnyiy massoperenos v formuemom podvodnom massive [Diffusive and capillary mass transfer in a mouldable submarine mass], Modern building materials, no. 1, pp.137-141.

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5. Krukovskaya, V.V., Krukovsky, A.P., Grebenyuk, S.D. and Vinogradov, U.A. (2010) “Diffusive moisture transfer in the porous structure of the buried concrete constructions”, Geotekhnicheskaya Mekhanika [Geo-Technical Mechanics], no. 90, pp. 86-95.

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7. Grebenyuk, S.D. (2012) Rationale for technology recovery and increase resilience buried and underground structures in areas of intensive filtering, Abstract of Ph.D. dissertation, Underground mining, M.S. Poljakov Institute of Geotechnical Mechanics under NAS of Ukraine, Dnepropetrovsk, Ukraine.

About the authors:

Skipochka Sergey Ivanovich, Doctor of Technical Sciences (D. Sc), Professor, Head of Department of Rock Mechanics, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Krukovskaya Victoriya Victorovna, Doctor of Technical Sciences (D. Sc), Senior Researcher, Senior Researcher in Department of Control of Dynamic Demonstrations of Rock Pressure, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Grebenyuk Sergey Dmitrievich, Candidate of Technical Sciences (Ph. D), Engineer, Deputy Director on manufacture, JSC «Donetskstal», Donetsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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