3D MODELING FOR ESTIMATION OF ENGINEERING-GEOLOGICAL CONDITIONS OF OPERATING MINERAL DEPOSITS

2020 ◽  
Vol 4 (442) ◽  
pp. 19-27
Author(s):  
Baibatsha Adilkhan Bekdildauly, ◽  
◽  
Muszyński, Andrzej, ◽  
Shaiyakhmet T.K., ◽  
Shakirova G.S., ◽  
...  
Keyword(s):  
3D Modeling ◽  
Mineral Deposits ◽  
Geological Conditions

scholarly journals Improving the criteria for choosing the strategies in management by geotechnical systems

2019 ◽  
Vol 109 ◽  
pp. 00048
Author(s):  
Yevhen Lapshyn ◽  
Robert Molchanov ◽  
Borys Blyuss ◽  
Nataliia Osadcha
Keyword(s):  
Game Theory ◽  
Optimal Strategy ◽  
Optimal Strategies ◽  
Mineral Deposits ◽  
Underground Space ◽  
Infrastructure Development ◽  
Main Indicator ◽  
Geological Conditions ◽  
Geological Faults

The conclusion has been made about the necessity to choose the optimal strategies for management by geotechnical systems, based on the analysis of geological faults, which are the main indicator of the mining and geological conditions that characterize the mineral deposits, as well as on the parameters for the infrastructure development of the underground space. The methodological peculiarity of solving the problems set is the use of game theory with modified criteria of Wald, maximax and Savage, since the manifestation of specific geological faults is probabilistic in nature. When choosing the optimal strategy, the average linear deviations of gains or risks are taken into account.

scholarly journals The choice of mining development strategy based on the improved Bayes criterion

2020 ◽  
Vol 168 ◽  
pp. 00053
Author(s):  
Yevhen Lapshin ◽  
Borys Blyuss ◽  
Serhii Dziuba ◽  
Larysa Tatarko
Keyword(s):  
Decision Making ◽  
Initial Data ◽  
Development Strategy ◽  
Economic Efficiency ◽  
Development Strategies ◽  
Mineral Deposits ◽  
Mining Operations ◽  
Acceptable Range ◽  
Geological Conditions

The choice of mining development strategies is based on the main indicators of mining and geological conditions that characterize mineral deposits. The purpose of the research is to argue the application of the improved Bayes criterion when choosing rational mining development strategies by taking into account the complex mining and geological conditions. The methodology of decision-making in terms of managing geotechnical systems depends on whether or not the probabilities of the conditions and dynamics of the parameters of rocks and soils are known during the development of mineral deposits, as well as the construction of infrastructure facilities. If the probabilities are unknown, then there is the problem of making decisions in the conditions of uncertainty of the initial data to assess the efficiency of the mining enterprises. And if the probabilities are known, then we are dealing with the task of making decisions in conditions of risk and assess the safety of mining operations. The improvement of the Bayes criterion enables us to determine, with an acceptable range of changes in efficiency, a strategy which provides more likely an increase in economic efficiency compared to a strategy selected using the traditional Bayes criterion.

scholarly journals Neotectonics and geodynamics of the Streltsovsky ore region according to the analysis of digital elevation models

2021 ◽  
Vol 946 (1) ◽  
pp. 012007
Author(s):  
I Yu Rasskazov ◽  
V I Usikov ◽  
Yu V Fedotova
Keyword(s):  
Underground Mining ◽  
Digital Elevation Models ◽  
Mineral Deposits ◽  
Eastern Region ◽  
Potential Hazard ◽  
Preliminary Assessment ◽  
Digital Elevation ◽  
Geological Conditions ◽  
Far Eastern ◽  
Drift Direction

Abstract In the case of underground mining of mineral deposits under difficult mining and geological conditions and at great depths, one of the most urgent problems is the prevention of dangerous geodynamic events. The use of digital elevation models significantly expands the possibilities of preliminary assessment of the potential hazard of their manifestation. This article discusses the results of an assessment of the neotectonics and geodynamics of the Streltsovsky ore region carried out using digital elevation models. The interpretation of the obtained data is based on the concept of lateral tectonic flows adapted for the Far Eastern region of Russia. Digital elevation models based on the GTOPO30 made it possible to identify and evaluate the drift direction of three tectonic flows in the region. The direction determined by the relief coincides satisfactorily with the GPS direction.

scholarly journals Modeling and methodology for calculating the strength of a man-made bottom in a system with self-destruction of ore for ecologically safe mining

2020 ◽  
Vol 192 ◽  
pp. 03018
Author(s):  
Evgeny Fedorov ◽  
Dosanbay Bekbergenov ◽  
Gulnar Jangulova
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Rock Pressure ◽  
3D Modeling ◽  
Structural Element ◽  
Mining System ◽  
Geological Conditions ◽  
Promising Solution ◽  
Metal Supports ◽  
Safe Mining

The article discusses the features of technological solutions in the development of chromite deposits at great depths in difficult mining and geological conditions. For a system with self-destruction of ore, as well as for other similar systems, the weakest point in mining is the design of the block bottom, especially for the lower horizons, where the geomechanical situation deteriorates significantly, it becomes necessary to use more powerful supports or to erect artificial bottoms that can withstand acting loads exceeding the bearing capacity of metal supports of various modifications. The most promising solution in the conditions of development of fractured massifs is the geotechnology of creating an man-made bottom at the zone of extraction and delivery of ore mass, in the areas of conjugation overstrett and interstrett pillars, reinforced with multi-support reinforced concrete platforms, as a bearing structural element of the mining system with self-destruction of ore, which can withstand extremely high rock pressure. The article presents the results of calculating the strength of an artificial bottom in a system with selfdestruction of ore using numerical 3D modeling.

scholarly journals GRAPHOANALYTICAL METHODOLOGICAL APPROACH TO THE COST ESTIMATION OF MINERAL DEPOSITS

2019 ◽  
pp. 71-75
Author(s):  
Vоlоdуmуr Matyukha
Keyword(s):  
Economic Theory ◽  
Cost Estimation ◽  
Methodological Approach ◽  
Mineral Resources ◽  
Cost Estimate ◽  
Mineral Deposits ◽  
Stage Of Development ◽  
Geological Conditions ◽  
Methodological Approaches ◽  
The Cost

The importance of cost estimation of mineral resources in modern economic theory is noted in the article. It is noted that all currently existing methodical and methodological approaches to the valuation of minerals by their economic nature are in fact an analysis of the economic feasibility of realization of investment projects for the development of deposits, which actually answers the question: is the investment project for the development of the field economically viable. Based on the analysis of literary sources, it is established that at the present stage of development of the world economy, the interest in the economic evaluation of the efficiency of development of mineral resources is not waning. However, methodological approaches are different and there is still no unity in them. Experts point out that the current methods require improvement due to the low accuracy of calculations, since the size of the cost estimate depends on the amount of rental payments for the use of mineral resources in mining and the starting price of the sale of a special permit for the development of deposits at auction. For the first time in the economic theory economics, a graphoanalytic method for the cost estimation of mineral deposits has been proposed. The features of this methodological approach based on integral calculus, including the integration of continuous functions, as well as the method of discounting cash flows with simultaneous consideration of the life cycle scheme of deposits, namely mining and geological conditions of mining are opened. The step-by-step sequence of realization of the proposed method is resulted. It is stated that this approach will allow to obtain a more exact cost estimate of a deposit or subsoil by taking into account the following factors: the life of the deposit, the market conditions of the mineral resources, capital and current expenses connected with extraction of minerals and costs of the subsoil user in the post-mining a period of time related to the closure of mines and quarries and the reclamation of disturbed lands formed during the extraction of minerals.

scholarly journals 3D Geological Modeling in Mineral Deposits (Copper Ore Body Cases)

2018 ◽  
Vol 14 (15) ◽  
pp. 1
Author(s):  
Sirelda Bele
Keyword(s):  
3D Modeling ◽  
Mineral Resources ◽  
Mineral Deposits ◽  
Copper Ore ◽  
3D Geological Modeling ◽  
Efficient Management ◽  
Ore Body ◽  
Ore Bodies ◽  
Modeling Software ◽  
Copper Zinc

Munella's deposit is one of the most important mineral deposits of Albania. It is rich in mineral resources such as copper, zinc, gold, etc. For this reason Geological 3D modeling is very important because it gives detailed information on management in the most optimal way to mine. In this article, 3D modeling of copper bodies was carried out through modeling software using the implicit method. This method uses advanced algorithms that are Polyharmonic Radial Basis Functions (RBF) generates the best surface area of the ore that can have some Z values and can perfectly customize the incomplete surfaces by utilizing 211 drilling data. The ore bodies that are created with this method are divided into blocks that represent the distribution of copper in%. The results achieved in this study provide an accurate overview of the most important sources of deposits and major concentrations of copper for the efficient management and exploitation of the mine.

scholarly journals Geological control of mineral deposits in Nepal

2019 ◽  
Vol 58 ◽  
pp. 189-197
Author(s):  
Ram Bahadur Sah ◽  
Kabi Raj Paudyal
Keyword(s):  
Process Analysis ◽  
Mineral Resources ◽  
Distribution Patterns ◽  
Mineral Deposits ◽  
Mineral Association ◽  
Nepal Himalaya ◽  
Geological Conditions ◽  
Mineral Commodities ◽  
Geological Control ◽  
Economic Mineral

Systematic information and in-depth knowledge of geological controls, mode of occurrences, distribution patterns and mineral association are very essential for exploring the new deposits and development of mineral resources of the country in general. In present study, an attempt has been made to clarify the geological controls of economic and sub-economic mineral deposits of Nepal. Investigation has shown that mineral deposits in Nepal Himalaya are controlled by particular geological conditions and tectonics. Till the date, economic potential of 63 mineral commodities from Nepal have been established by Department of Mines and Geology. Several economic to sub economic deposits of the country are explored and some are under mining process. Analysis of geological controls of above mentioned economic and sub-economic mineral deposits shows that they are either syngenetically or epigenetically confined to particular stratigraphic and tectonic units. These deposits are related in time and space to certain events of crustal movement representing different metallogenic epochs.

scholarly journals Overpressure-generating mechanisms in the Blok F3, North Sea, Netherland

2021 ◽  
Vol 10 (2) ◽  
pp. 117-128
Author(s):  
Khusmia Karin ◽  
. Sudarmaji
Keyword(s):  
Pore Pressure ◽  
North Sea ◽  
3D Modeling ◽  
Acoustic Impedance ◽  
Normal Pressure ◽  
Interval Velocity ◽  
Impedance Inversion ◽  
Geological Conditions ◽  
Acoustic Impedance Inversion ◽  
Well Data

Block F3 North Sea is a block with pore pressure values that vary over time due to complex geological conditions such as burial and various sedimentation zones. Pore pressure is one of the important aspects that need to be analyzed as a basis for the identification of zones and overpressure mechanisms. Overpressure is a greater pore pressure condition than normal pressure and may cause drilling problems, such as kicks, blowouts, etc. This study calculated pore pressure values using the eaton method approach with well data and seismic data. Both data are integrated for generating pore pressure values in 1D and 3D. 1D Modelling uses Interactive Petrophysics 3.5, while 3D modeling uses Petrel software. In 3D modeling, the variables used are interval velocity and inversion velocity obtained by acoustic impedance inversion. The sub-variables used are the inversion density and the regression density obtained from well density acoustic impedance inversion. The existence of a 1D overpressure zone at a depth of 1,100 – 1,800 m with an overpressure value of 3,836 – 18,975 kPa. In addition, the overpressure value based on the 3D model is 8,000 – 18,000 kPa. The overpressure zone is validated using an acoustic impedance inversion model with a high value of 5,200 – 5,380 (m/s)*(gr/cc). Overpressure in Block F3 is predicted to occur from disequilibrium compaction..

scholarly journals Industrial Applications of Clay Materials from Ghana (A Review)

2018 ◽  
Vol 34 (4) ◽  
pp. 1719-1734 ◽  
Author(s):  
R.B. Asamoah ◽  
E. Nyankson ◽  
E. Annan ◽  
B. Agyei-Tuffour ◽  
J.K. Efavi ◽  
...  
Keyword(s):  
Clay Minerals ◽  
Environmental Remediation ◽  
Industrial Applications ◽  
Mineral Deposits ◽  
Industrial Minerals ◽  
Local Clay ◽  
Geothermal Fields ◽  
Geological Conditions ◽  
Wide Range ◽  
Clay Materials

Clay minerals are phyllosilicate groups naturally found in soils in all parts of the world. They have proven to be among the most essential industrial minerals because of their unique physicochemical properties and versatile applications within a wide range of fields including ceramics, construction, and environmental remediation, biomedical as well as cosmetics. Clay minerals are also primary to the production of other materials such as composite for secondary applications. In Ghana, clay mineral deposits are commonly found in several areas including soil horizons as well as geothermal fields and volcanic deposits, and are formed under certain geological conditions. This review seeks to explore the geographical occurrence and discusses the current uses of various local clay materials in Ghana in order to highlight opportunities for the utilization of these materials for other applications.

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