Semenenko Ye., Medvedieva O., Теpla Т., Halchenko Z., Medianyk V., Moldabayev S. Determining the duration of preparation for the development of technogenic coal deposits when using bioremediation methods for their dewatering action
- Details
- Parent Category: Geo-Technical Mechanics, 2025
- Category: Geo-Technical Mechanics, 2025, Issue 175
Geotech. meh. 2025, 175, 5-13
https://doi.org/10.15407/geotm2025.175.005
DETERMINING THE URATION OF PREPARATION FOR THE DEVELOPMENT OF TECHNOGENIC COAL DEPOSITS WHEN USING BIOREMEDIATION METHODS FOR THEIRDEWATERING ACTION
1M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine
2Dnipro University of Technology
3Satbayev University
UDC 622.333:622.06:573.6:504.054
Language: English
Abstract. The subject of the study is the patterns and parameters of the process of achieving a state of dynamic equilibrium between the liquid and solid phases of a technogenic coal deposit under the influence of climatic and production factors in the presence of biotechnogenic impact on the coast and on the free surface of storage facilities. The aim of the study is to establish the dependencies of the processes of dehydration of man-made coal deposits using bioremediation technology, which will ensure their environmentally safe and efficient extraction and utilization. A mathematical model describing the state and parameters of man-made coal deposits during their preparation for development using bioremediation methods has been modernized. It uses the fundamental laws of mass conservation for the liquid and solid phases of deposits, taking into account the inflow of liquid from atmospheric precipitation and coal enrichment waste, and its losses during evaporation under the influence of the sun and transpiration by green spaces, as well as possible mass transfer during the extraction of carbon-containing raw materials in the form of a high-concentration hydro mixture. Taking into account the influence of the absorption capacity of green spaces existing in the environment of a man-made coal deposit is based on the equations of a flat filtration process of an ideal heavy liquid, taking into account Darcy's law and a non-homogeneous continuity equation, considering the existence of liquid flows in the form of a biological crop transpiration coefficient. At the same time, the characteristics of the profile of the banks of the coal enrichment waste storage facility significantly affect only the time it takes to establish this state, but not the liquid level in the storage facility or the value of the plant transpiration coefficient that ensures this equilibrium. It has been shown that the time it takes for the coal enrichment waste layer to reach a state of dynamic equilibrium in a storage facility whose shores are planted with biological crops is directly proportional to the cube root of the product of the Darcy coefficient and the square of the storage facility radius, and inversely proportional to the cube root of the product of the specific fluid consumption per unit length of the coal enrichment waste storage perimeter and the magnitude of the biotechnogenic impact. The scientific novelty of this conclusion lies in the fact that, for the first time, the dependence of the thickness of the liquid layer above technogenic coal deposits, corresponding to the state of dynamic equilibrium, on the specific liquid flow rate, the Darcy coefficient, and the magnitude of biotechnogenic impact has been scientifically substantiated.
Keywords: bioremediation, biological culture, transpiration, dewatering, man-made deposits, coal enrichment waste, waste storage facilities.
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About the authors
Semenenko Yevhen, Doctor of Technical Sciences (D.Sc), Senior Researcher, Head of Department of Mine Energy Complexes, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0001-8707-3648
Medvedieva Olha, Doctor of Technical Sciences (D. Sc.), Senior Researcher, Senior Researcher in Department of ecology of development of natural resources, M. S. Poliakov Institute for Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. (Corresponding author), ORCID 0000-0001-5575-713X
Tepla Tetiana, Doctor of Philosophy, Research, Department of Mine Energy Complexes, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. . ORCID 0000-0001-9835-5448
Halchenko Zariana, Graduate Student, M.S. Poliakov Institute of Geotechnical Mechanics NAS of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0002-5754-3175
Medianyk Volodymyr, Candidate of Technical Sciences (Ph.D), Associate Professor, Associate Professor of the Department of Mining Engineering and Education, National Technical University "Dnipro Polytechnic", Dnipro, Ukraine,
This email address is being protected from spambots. You need JavaScript enabled to view it.
Moldabayev Serik, Doctor of Technical Sciences (D. Sc.), Associate Professor, Head of Department at the Department of Mining, Satbayev University, Almaty, The Republic of Kazakhstan, s.moldabayev@satbayev.university