| Annotation |
In the mining and processing industry, the products of the proceeding production stage are the initial mineral raw materials of the subsequent stage, and at different stages various requirements are imposed on the quality of the mineral raw materials. In some cases, ore deposits slightly differ from the host rocks in physical properties and mineral composition, and therefore, the boundaries of mining units are determined on the basis of testing of faces and wells.
The authors analyze previous studies of the mineralization structure of ore blocks of complex morphology and indicators of its assessment. The combination of factors of the geological structure, structure and mineral composition of the field affects not only the choice of the method of mining the field, but also the technology of ore preparation and concentration of the extracted raw materials. It should be noted that inside the block not only ore and waste rocks can alternate, but in ore bodies it is also necessary to isolate ores of various geological and technological varieties. Since ore heterogeneity significantly affects its processing, it is necessary to evaluate the complexity of the internal structure of the “ore core” of the extraction block, and when forming mining blocks along the horizons, it is important to take into account the technological requirements for individual ore grades, the boundaries of natural mineralization, and the possibility of separate extraction of different-grade ores according to strike of the ore body using horizontal or vertical selection.
Depending on the complexity of the structure of the field and the applicable production technologies, selective excavation can be single-level, multi-level or complex. Based on the analysis of previous studies and their own developments, the authors propose a systematization of mineralization as an object of excavation, in which types, classes, subclasses and types of mineralization are distinguished according to various criteria. The methodological principles of establishing the boundaries of varieties during the contouring of operational blocks are also substantiated |
| References |
1. Bogolyubov B. P., Grachev F. G. Razdelnaya razrabotka mestorozhdeniy slozhnogo sostava (Separate development of deposits of complex composition). Moscow: Nedra, 1964. 167 p.
2. Dubynin N. G., Fesenko V. A. Sovershenstvovanie tehnologii vyemki tonkih naklonnyh zhil (Improving the technology for the extraction of thin inclined cores). Novosibirsk: Nauka, 1974. 109 p.
3. Zarubin M. Yu., Fionin E. A., Danilets E. V. Vestnik Magnitogorskogo gosudarstvennogo tehnicheskogo universiteta im. G. I. Nosova (Bulletin of Magnitogorsk State Technical University named after G. I. Nosov), 2013, no. 3, pp. 5–9.
4. Lomonosov G. G. Formirovanie kachestva rudy pri otkrytoy dobyche (Formation of ore quality in open pit mining). Moscow: Nedra, 1975. 224 p.
5. Lukichev S. V., Lyubin A. N. Problemy nedropolzovaniya (Subsoil use problems), 2016, no. 4, pp. 69–73.
6. Oparin V. N., Sekisov A. G., Trubachev A. I., Smolyanitsky B. N., Salikhov V. S., Zykov N. V. Fiziko-tehnicheskie problemy razrabotki poleznyh iskopaemyh (Physical and technical problem of mining), 2017, no. 3, pp. 70–78.
7. Osnegovsky E. R. Problemy raboty karierov Severa (Problems of the work of quarries in the North). Moscow, 1968, pp. 61–63.
8. Rakhimov V. R., Shemetov P. A., Snitka N. P. Gorny zhurnal (Mountain Journal), 2013, no. 8, pp. 20–25.
9. Sekisov A. G., Lavrov A. Yu., Manzyrev D. V. Vestnik Chitinskogo gosudarstvennogo universiteta (Bulletin of Chita State University), 2011, no. 2, pp. 106–111.
10. Sytenkov V. N. Ratsionalnoe osvoenie nedr (Rational subsoil development), 2019, no. 2-3, pp. 72–78.
11. Trubetskoy K. N., Leonov E. R., Pankevich Yu. B. Kompleksy mobilnogo oborudovaniya na otkrytyh gornyh rabotah (Complexes of mobile equipment in open cast mining). Moscow: Nedra, 1990. 255 p.
12. Sharin V. V. Ocenka slozhnostey selektivnoy razrabotki mestorozhdeniy po stepeni kontaktnyh zon. Sovershenstvovanie tehnologii otkrytyh gornyh rabot (Assessing the difficulties of selective field development according to the degree of contact zones. Improving the technology of open cast mining). Moscow: Nedra, 1966. 124 p.
13. Yumatov B. P., Baykov B. N., Smirnov V. P. Otkrytaya razrabotka slozhnostrukturnyh mestorozhdeniy tsvetnyh metallov (Open development of complex structural non-ferrous metal deposits). Moscow: Nedra, 1973. 192 p.
14. Yumatov B. P., Sekisov G. V., Buyanov M. I. Normirovanie i planirovanie polnoty i kachestva vyemki rudy na karierah (Rationing and planning of the completeness and quality of ore mining in quarries). Moscow: Nedra, 1987. 183 p.
15. Adams M. D. Gold ore processing: project development and operations (Gold ore processing: project development and operations). Amsterdam: Elsevier, 2016. 980 p.
|
