Forecast of the level regime of groundwater in landslide areas (on the example the city of the Dnipro)


  • G. P. Yevgrashkina
  • T. P. Mokrickaja
  • V. K. Marchenko
  • K. S. Lomova
Keywords: hydrogeological forecast, boundary conditions, reliability, adequacy, epignosis, direct problem, regime observations

Abstract

The forecast of the groundwater regime is an important and compulsory component of a complex of field, laboratory and scientific studies to justify the optimal nature protection measures of hydrogeological orientation. The classical hydrogeological forecast includes the solution of all types of filtration problems in accordance with their classification: direct, inverse, inverse, inductive and generalized. First, the inverse and direct problems are solved. Their result is the justification of the design scheme, the definition of boundary conditions and filtration parameters. In the second stage, we consider variants of inductive problems for the choice of equations describing the processes under study and the corresponding analytical and numerical solutions that are most reliable under the conditions under study. The adequacy of the chosen solution to the real conditions is confirmed by the results of the epicopic calculation by comparing it with the observational observations. On the basis of the implementation of all the above-mentioned actions, it was reasonably proved that for the forecast of the level regime of landslide-dangerous territories adjacent to the beams, the optimal in the methodical and scientific aspects was recognized as two schemes - limit or maximum lift and a half-plane in a semi-bounded bed. Here we consider the sections schematized according to the first scheme. The investigations are completed by solving the direct problem of determining the amount of rise in the level with allowance for evaporation from their surface. Also considered are emergency situations with the formation and spreading of man-made hillocks. The methods of determining the value of infiltration supply are described in the present paper for solving the problems without limitations in the presence of regime-based observations. These methods are well-coordinated with each other, confirming their high reliability. The amount of infiltration feed in all areas adjacent to the territories of the Yevpatoriskaya, Tunelnaya, Krasnopolyanskaya and Krasnopovstancheskaya alleys indicates a steady but very slow rise in the level of groundwater. For the first time, two-dimensional nonlinear equations that take into account the filtration anisotropy in finite-difference form are used to determine the value of infiltration nutrition. There are no similar publications in the modern scientific physiotherapist, and previous authors use more simple methods. In determining the magnitude of evaporation for the city of Dnipro, a plot of the dependence of evaporation from the depth of the occurrence of groundwater level was constructed. 

Author Biographies

G. P. Yevgrashkina
Oles Honchar Dnipro National University
T. P. Mokrickaja
Oles Honchar Dnipro National University
V. K. Marchenko
Oles Honchar Dnipro National University
K. S. Lomova
Oles Honchar Dnipro National University

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Published
2018-03-30
How to Cite
Yevgrashkina, G., Mokrickaja, T., Marchenko, V., & Lomova, K. (2018). Forecast of the level regime of groundwater in landslide areas (on the example the city of the Dnipro). Journal of Geology, Geography and Geoecology, 26(1), 227-234. https://doi.org/https://doi.org/10.15421/111823