RESEARCH AND ASSESSMENT OF MINERAL RESERVES BASED ON AUTOMATED GEO-INFORMATION SYSTEM SUPPORT USING THE EXAMPLE OF THE NOVOKOSTIANTYNIV URANIUM ORE DEPOSIT

• Дата: 2024
• Автори: Ляшенко, В.І., Дудар, Т.В., Шаповалов, В.А.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Institute of Geological Sciences, NAS of Ukraine 2024
• Теми: deposit modeling; management estimation; geoinformation systems and devices; reserve
• Онлайн доступ: http://geojournal.igs-nas.org.ua/article/view/304036
• Назва журналу: Geological journal

 The article presents the scientific and practical results of research and assessment of mineral reserves based on automated geo-information system support using the example of the Novokostiantyniv uranium ore deposit. This will ensure the creation of databases of mining-geological and mining-technological conditions of mining operations with the use of computer graphics tools, which make it easier to detail the outline of the ore body by logging the fans of exploratory and explosive wells. It also makes it easier to manage the preparation of ore and metal reserves in it for mining. In the course of the study, data from literary sources and documentation in the field of underground development of ore deposits of complex structure were used. Classical clustering methods were used for data selection. The most practical is the method of inverse weighted distances, spine, trend, kriking, etc. The methods of mathematical statistics, correlation methods, determination of difference equations using the Wiener–Hopf equation, classic and new methods of multi-link systems with the participation of the authors were used in the creation of models. It has been proven that in the contour zone of the chamber, the coefficients of ore desalting reach 60–70% of the total values, and on average they are 29–32% for the operational block. Reserve coefficients are set, taking into account the verifiability of ore reserves (1.10) and metal in it (1.05). The general reserve coefficient (its value is in the range of 1.30–1.45) for rational use and protection of the subsoil during the development of deposits of a complex structure is substantiated. It is shown that the total reserve coefficient should take into account not only the technological reliability of the mine for the extraction of ore and metal in it, but also the verifiability of subsoil reserves. In particular, the values of readiness of reserves for extraction are determined by ore, differ by 10–15% from similar values for metal, and the indicators of extraction of minerals from the subsoil – from the characteristics of the elements of ore deposits (loss and depletion coefficients for metal are about 75%, similar indicators determined by ore). On the basis of the received data, albums-catalogues, methods for them were compiled, specialized computer modules based on K-MINE® GIS were developed. The proposed graph-analytical, tabular and computer calculation methods simplify the management and control of extraction of mineral reserves from the subsoil. The Derzhhirpromnahlyad “Instructions on rationing of ore reserves, prepared and ready for extraction at the Novokostyantinivska mine” of the State Enterprise “Skhidnyi GZK” was developed and agreed upon. Geophysical devices and systems with RAM simplify data entry into the computer database using special programs such as Surfer or GIS K-MINE®, VENTSIM, etc. Their implementation with the help of the automated system of geological and economic assessment (AT GEO) GIS K-MINE® makes it easier to solve applied questions of GEO of reserves of mineral deposits. The obtained results of the research allow to determine, optimize and control losses and depletion of ore and metal in it due to the establishment of the optimal contour of ore reflection in the contour zone, as well as to effectively manage ore reserves prepared and ready for extraction during the development of deposits of complex structure, which are, in particular, uranium deposits.