• Mining under the early metal in the context of Kartamysh ore occurrence of Ukrainian Donbas 

  Brovender, Yurii; Haiko, Hennadii; Brovender, Olena (Dnipro University of Technology, 2021-09-30)

  Purpose is to identify process engineering of mining under the Late Bronze age (18th-13th centuries BCE) in the context of copper deposits in the Eastern Ukraine. Among other things, it concerns analysis of manufacturing ...

• Analyzing changes in a leach solution oxygenation in the process of uranium ore borehole mining 

  Aben, Erbolat; Toktaruly, Bakytzhan; Khairullayev, Nursultan; Yeluzakh, Mukhtar (Dnipro University of Technology, 2021-09-30)

  Purpose is to increase uranium content in a PR solution while developing a technique varying oxidation-reduction potential of a leach solution with its oxygenation and identify changes in the oxygenation depending upon ...

• Study and evaluation of the stability of underground mining method used in shallow-dip vein deposits hosted in poor quality rock 

  Ghazdali, Omar; Moustadraf, Jalal; Tagma, Tarik; Alabjah, Bahija; Amraoui, Fouad (Dnipro University of Technology, 2021-09-30)

  Purpose. This article proposes to analyze and determine the mining design for shallow-dip deposits hosted in poor quality rock. Methods. We used the UBC tool to find the optimal exploitation method, the Rock mass rating ...

• Analytical modeling of mine water rebound: Three case studies in closed hard-coal mines in Germany 

  Rudakov, Dmytro; Westermann, Sebastian (Dnipro University of Technology, 2021-09-30)

  Purpose. In this paper we present and validate an analytical model of water inflow and rising level in a flooded mine and examine the model robustness and sensitivity to variations of input data considering the examples ...

• Reliability and maintainability of scraper conveyor used in coal mining in the Jiu Valley 

  Florea, Vlad Alexandru; Pasculescu, Dragos; Pasculescu, Vlad Mihai (Dnipro University of Technology, 2021-09-30)

  Purpose. The aim of the study is to determine and analyse causes of faults in the operation of TR-7A scraper conveyor and to estimate the required time for their remediation and select the methods of their prevention and ...

• Technical and technological aspects of the coal mine closure based on the geomechanical component assessment 

  Barabash, Mykhailo; Salieiev, Ildar; Symanovych, Hennadii (Dnipro University of Technology, 2021-09-30)

  Purpose. Development of a comprehensive methodology for assessing the state of mine workings based on the analysis of their contour displacement patterns when solving the problem of minimizing the risks during the closure ...

• Potential utilization of quartz sand and kaolin from tin mine tailings for whiteware 

  Subari; Erlangga, Bagus D.; Maryani, Eneng; Arifin, Danang Nor (Dnipro University of Technology, 2021-09-30)

  Purpose. To do experimental research into the potential utilization of residual quartz-based sands and kaolin from the tin mine tailings in Bangka Belitung Province, Indonesia. Methods. Process of raw materials beneficiation ...

• New technology for mineral deposits prediction to identify prospective areas in the Zhezkazgan ore region 

  Zeylik, Boris; Arshamov, Yalkunzhan; Baratov, Refat; Bekbotayeva, Alma (Dnipro University of Technology, 2021-06-30)

  Purpose. Exploration and predicting the prospective areas in the Zhezkazgan ore region to set up detailed prospecting and evaluation works using new integrated technologies of prediction constructions in the mineral ...

• Factors influencing the flooding process of former coal open-pits 

  Lazar, Maria; Apostu, Izabela-Maria; Faur, Florin; Rotunjanu, Ilie (Dnipro University of Technology, 2021-06-30)

  Purpose. This study aims to identify the main factors that influence the flooding process of the remaining gaps of open-pits comprising essentially the velocity and duration of flooding, but also the stability of in situ ...

• New theory for the rock mass destruction by blasting 

  Kononenko, Maksym; Khomenko, Oleh (Dnipro University of Technology, 2021-06-30)

  Purpose. To develop a new theory for the rocks destruction by blasting using a description of the formation processes of zones with various mass state around the charging cavity. Methods. The new theory for the rock mass ...

• Potential for increasing the efficiency of design processes for mining the solid mineral deposits based on digitalization and advanced analytics 

  Uteshov, Yerzhan; Galiyev, Daniyar; Galiyev, Seitgali; Rysbekov, Kanay; Nаuryzbayeva, Dilda (Dnipro University of Technology, 2021-06-30)

  Purpose. The research purpose is to develop and adapt the existing scientific-methodological, as well as software and information base for managing the geotechnological complexes to implement the process approach at the ...

• Studying the influence of the carbon dioxide injection period duration on the gas recovery factor during the gas condensate fields development under water drive 

  Matkivskyi, Serhii; Kondrat, Oleksandr (Dnipro University of Technology, 2021-06-30)

  Purpose. Studying the process of carbon dioxide injection at the boundary of the initial gas-water contact in order to slow down the formation water inflow into producing reservoirs and increase the final hydrocarbon ...

• Quality evaluation and loss estimation at gravel quarries around the Qena Governorate, Egypt: A case study 

  Ali, Mahrous A.M.; Hassan, Mohamed M.A.; Kim, Jung-Gyu; Kim, Jong-Gwan (Dnipro University of Technology, 2021-06-30)

  Purpose. In recent years in Egypt there has been a significant increase in the demand for building materials, particularly gravel which is employed in buildings, the base layer for road construction, and other industries. ...

• Development of composition of cementing slurry for fastening of low-cemented rocks 

  Kondrat, Roman; Dremliukh, Natalia; Khaidarova, Liliya (Dnipro University of Technology, 2021-06-30)

  Purpose. Improving the producing capacity and ensuring the stable operation of gas wells that develop unstable, lowcemented reservoirs by preventing the sand entry from the reservoir by means of creating the cement stone ...

• Risk criteria classification and the evaluation of blasting operations in open pit mines by using the FDANP method 

  Kiani, Mohammad; Hosseini, Seyed Hamid; Taji, Mohammad; Gholinejad, Mehran (Dnipro University of Technology, 2021-06-30)

  Purpose. Mineral projects are heavily influenced by risk factors. By providing evidence-based information and analysis to make informed decisions about how to choose between options, a risk assessment can be made. Methods. ...

• Mathematical modelling of thermal stresses within the borehole walls in terms of plasma action 

  Bulat, Anatolii; Osіnnii, Valentyn; Dreus, Andrii; Osіnnia, Nataliia (Dnipro University of Technology, 2021-06-30)

  Purpose is the development of a mathematical model to study and describe thermal processes within the borehole wall in terms of plasma-based rock breaking. Methods. The following has been applied: theoretical analysis ...

• Protecting buried pipelines using different shapes of geofoam blocks 

  Hassan, Dyaa (Dnipro University of Technology, 2021-06-30)

  Purpose. This research presents experimental modeling and numerical analysis on reducing stress and protecting buried pipelines using three arrangements techniques of expanded polystyrene (EPS) geofoam blocks: embankment, ...

• Determination of the injury probability among coal mine workers 

  Nosal, Dmytro; Konovalov, Serhii; Shevchenko, Volodymyr (Dnipro University of Technology, 2021-06-30)

  Purpose. Establishing regularities of change in the injury probability and development of a methodology for determining the injury probability of coal mine workers to improve the occupational health and safety (OSH) ...

• Research on the coupling effect of the composite slope geometrical parameters 

  Barvor, Yamah Joy; Bacha, Sher; Qingxiang, Cai; Zhao, Chen Shu; Mohammad, Nisar; Jiskani, Izhar Mithal; Khan, Naseer Muhammad (Dnipro University of Technology, 2021-06-30)

  Purpose. To analyze the coupling effect between composite slope geometrical parameters. Methods. The slope angle and excavation depth are coupled with load which is waste dump in this case. Several models were created ...

• Mathematical model to optimize drilling-and-blasting operations in the process of open-pit hard rock mining 

  Shcherbakov, Petro; Tymchenko, Svitlana; Bitimbayev, Marat; Sarybayev, Nurzhigit; Moldabayev, Serik (Dnipro University of Technology, 2021-06-30)

  Purpose is to determine a function of the reduced expenditures connected with drilling-and-blasting operations, loading and hauling operations, and rock fragmentation depending upon the cost of machine-shift of the applied ...

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