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A. V. Shidlovskaya
A. V. Shidlovskaya
Saint Petersburg State Mining Institute (Technical University)
Saint Petersburg State Mining Institute (Technical University)
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Articles

Geology and metallogeny
  • Date submitted
    2016-11-10
  • Date published
    2013-01-01

Physical and chemical genesis of swell and osmotic shrinkage of clay soils in construction’s base by results of experimental researches

The effect of physical-chemical and chemical factors on peculiarities of swell and osmotic shrinkage of clay provided to unmembrane’s effect is analyzed. It is demonstrate that the genesis of swell due to water inflow in soil and its outflow is principally different and depends on different correlation of clay pore water concentration (Сп) and solutions filter-passing (Сф). The balance equations for  five types of swells are adduced. The experimental researches are allowed  to obtain the equation for calculation of solution concentration (boundary of osmotic shrinkage Споу). The exceeding of Споу leads to osmotic shrinkage of clay formation. The conclusion of strength and deformation capacity of clay by swell and shrinkage is gained.

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R. E. Dashko, A. V. Shidlovskaya (2013) Physical and chemical genesis of swell and osmotic shrinkage of clay soils in construction’s base by results of experimental researches. Journal of Mining Institute. Vol 200. p. 193.
Geotechnology for development of solid mining fields
  • Date submitted
    2016-11-11
  • Date published
    2012-05-01

Hydrogeological conditions effect on safety of underground space expansion during transport tunnel construction

The estimation of main factors which exerts influence upon functioning reliability of system «tunnels – underground space» is executed. It is shown that hydrogeological conditions have a special importance for construction and maintenance of subway tunnels in Saint-Petersburg. The hydrodynamic effect of regional and local water-bearing horizons on development and activation of different processes such as groundwaters flow, quicksands, head water inrush, underground constructions deformation is analyzed. The influence of hydrochemical conditions on formation of underground space aggressiveness to constructional and waterproofing materials of the tunnels is established. The negative effect of underground microbiota activity on degradation of reinforced concrete and castiron tunnel lining is shown.

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R. E. Dashko, P. V. Kotyukov, A. V. Shidlovskaya (2012) Hydrogeological conditions effect on safety of underground space expansion during transport tunnel construction. Journal of Mining Institute. Vol 199. p. 9.
Present-day problems of geomechanics, mining practice and innovation technologies in mining engineering
  • Date submitted
    2016-11-17
  • Date published
    2012-03-01

Biotic and abiotic components in underground space: genesis and effect on condition and properties of sandy soils

The study presents influence biotic and abiotic components in underground space on formation and changes of sandy soils conditions and properties under peat, contamination of leaking sewages and some industrial enterprises. The regularities of decreasing of density, water permeability and shear strength of sand due to good disintegrated peat by experimental are analyzed. The organic component of biotic genesis leading to extremely negative effect on permeability and mechanical properties of water saturated sands till to quicksands is shown. The local constructional norms for Saint-Petersburg on the base of getting results should be modernized.

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R. E. Dashko, A. V. Shidlovskaya (2012) Biotic and abiotic components in underground space: genesis and effect on condition and properties of sandy soils. Journal of Mining Institute. Vol 197. p. 209.
Geology
  • Date submitted
    2016-11-23
  • Date published
    2012-01-01

Engiineering-geological and hydrogeological problems of st. Isaak cathedral’s long-term stability substantiation (Saint-Petersburg)

In the paper construction specificity of St. Isaak Cathedral’s underground space and engineering geological profile features are considered. The comparative assessment of condition and properties modification of water-saturated quarternary sandy and clay soils during 55 years are taken up (1954-2009). The dynamic of groundwater contamination due to leakage sewers and its aggressiveness are estimated. The researches of microbes activity in soils which are characterized by quasiheavy values are completed. The structural  of complex monitoring to secure of St. Isaak Cathedral long-term stability are proposed.

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R. E. Dashko, A. V. Shidlovskaya, O. Yu. Aleksandrova, I. V. Alekseev (2012) Engiineering-geological and hydrogeological problems of st. Isaak cathedral’s long-term stability substantiation (Saint-Petersburg). Journal of Mining Institute. Vol 195. p. 28.
Geotechnology
  • Date submitted
    2016-12-05
  • Date published
    2011-02-01

Geobiological and hydrogeochemical impact on underground escalator tunnel constructions determining intensification of corrosion material processes in Saint Petersburg

This paper discusses the geobiological and hydrogeochemical processes in St.-Petersburg underground space and their role in corrosion of escalator constructional materials. The special attention were attracted to the ecological conditions which are connected with organic, inorganic contaminants and microbiota transporting to soils and groundwater from leaking sewer system and also from zones of long existing cemeteries. A detailed study and numerical analyses of escalator tunnel constructional materials were carried out to reveal biological defeat and destruction of concrete and grey iron as a result of microbiota destructive activity.

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D. Yu. Vlasov, A. V. Shidlovskaya, O. Yu. Aleksandrova (2011) Geobiological and hydrogeochemical impact on underground escalator tunnel constructions determining intensification of corrosion material processes in Saint Petersburg. Journal of Mining Institute. Vol 190. p. 60.
Geotechnology
  • Date submitted
    2016-12-05
  • Date published
    2011-02-01

Technogenic transformation of the basic components of megacities underground space and its account in geomechanical calculations (on the example of Saint Petersburg)

Engineering-geological and hydro-geological features of rent of St. Petersburg are considered. It is noted that at designing buildings for different purposes, in order to ensure their long-term stability it is necessary to analyze the possibility of their transformation the main components of underground space (rocks, underground water, gas, microbiota, underground structures) under the influence of natural and technogenic factors. Examples of transformation of sand-clay soils under the influence of physical and chemical conditions change and activization of microbial activity in underground space are given. The case of transition of a heavy construction to a pre-emergency condition because of mistakes in engineering research and incorrect assigning of computative parameters is analyzed.

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R. E. Dashko, A. V. Shidlovskaya, K. V. Pankratova, A. M. Zhukova (2011) Technogenic transformation of the basic components of megacities underground space and its account in geomechanical calculations (on the example of Saint Petersburg). Journal of Mining Institute. Vol 190. p. 65.
Geology
  • Date submitted
    2016-12-19
  • Date published
    2010-02-01

Complex geological engineering and geoenvironmental monitoring as a basis for creation of strategy of Saint Petersburg architectural and historical monuments conservation

In the paper concept and structural of complex engineering geological and geoenvironmental monitoring of architectural and historical monuments are considered. The specificity of engineering geological and hydrogeological conditions by the example of the Isaac Cathedral, the Kazan Cathedral and the Peter and Paul Cathedral is analyzed. The geoenvironmental condition of architectural and historical monuments underground space is estimated. The factors which influence on monuments deformation due to the high degree of underground space transformation and activity of negative natural and technogenic processes are shown. The system of impact monitoring of the Isaac Cathedral, the Kazan Cathedral and the Peter and Paul Cathedral is proposed. 

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A. V. Shidlovskaya (2010) Complex geological engineering and geoenvironmental monitoring as a basis for creation of strategy of Saint Petersburg architectural and historical monuments conservation. Journal of Mining Institute. Vol 186. p. 46.