DOI: 10.18503/1995-2732-2024-22-3-22-32
Abstract
The article discusses the issues of mining the reserves on the flanks of the Zhezkazgan deposit and the Annensky ore field, where the main ore production is concentrated, to a depth of 500 m in deposits with an angle of inclination from 15° to 35° and over, the study is aimed at providing a rationale for the technology of repeated ore extraction from rooms and pillars with field preparation in complicated mining and technical conditions of collapsed zones with a shift trough based on a ranking indicator. The set objectives were achieved by conducting theoretical and experimental studies on stages and a procedure for mining the reserves and repeated mining of the residual reserves from pillars, using methods for providing a rationale for geomechanical parameters and determining the value of minerals. The studies resulted in providing rational process flow charts of potential repeated mining of residual ore reserves from rooms and pillars with field preparation, and determining the order of inclusion at specific blocks under consideration, in a descending order: firstly, block 54, then blocks 22-23-24, blocks 15 and 15-15 south, in areas, where deposits are overlapped, and then block 7bis of the Annenskaya mine of the East Zhezkazgan Mine in complicated geotechnical conditions of collapsed zones with a shift trough. Based on technical and economic calculations, the extraction of ore reserves from pillars in these blocks is efficient and safe in case of repeated extraction of ores using the existing examples of the deposit in complicated mining, geological and technical conditions, when mineral resources are depleted. Such option of repeated ore extraction from rooms and pillars with field preparation in the collapsed zone with the shift trough may be used in various mining, geological and technical conditions of deposits.
Keywords
field development, underground technology, technological blocks, mining horizon, delivery gallery, geomechanical state of the massif, Annenskaya mine
For citation
Bekbergenov D.K., Jangulova G.K., Zhanakova R.K., Abiyev B. The Possibility of Repeated ore Extraction from Rooms and Pillars with Field Preparation in a Collapsed Zone with a Shift Trough of Deposits. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2024, vol. 22, no. 3, pp. 22-32. https://doi.org/10.18503/1995-2732-2024-22-3-22-32
1. Ordin A.A. et al. Development of a room-and-pillar mining system below the boundary of rock bursts in the Denisovskaya mine. Fundamentalnye i prikladnye voprosy gornykh nauk [Basic and Applied Issues of Mining Sciences]. 2014;1(1):273-279. (In Russ.)
2. Zhikalyak N.V. A new indicator of gas content in sandstones. Geotekhnicheskaya mekhanika [Geotechnical Mechanics]. Dnepropetrovsk: Institute of Geotechnical Mechanics, the National Academy of Sciences of Ukraine. 2003;(42):238-246. (In Russ.)
3. Imansakipova B.B., Sdvyzhkova O.O., Isabayev K.Z., Shakieva G. The combined method for assessing risk factors in underground construction. Scientific Bulletin of the National Mining University. 2020;(3):53-58. https://doi.org/10.33271/nvngu/2020-3/053
4. Dutton S.P. Play analysis and leading edge oil-reservoir development methods in the Permian Basin: Increased recovery through advanced technologies. AAPG Bulletin. 2005;89(5):553-576. DOI:10.1306/12070404093
5. Xu C., Zhou KP, Xiong X., Gao F., Lu Y. Prediction of mining induced subsidence by sparrow search algorithm with extreme gradient boosting and TOPSIS method. Acta Geotechnica. 2023;18(9):1-17.
6. Evans V., Mike Mayev. Development of the Saskatchewan potash mines. CIM Convention-Montreal. Canada 2011.
7. Zhou J., Zhu S.L., Qiu Y.G., Armaghani D.J., Zhou A.N., Yong W.X. Predicting tunnel squeezing using support vector machine optimized by whale optimization algorithm. Acta Geotechnica. 2022;17(4):1343-1366.
8. Tishkov M., Potvin Y., Jakubec J. Evaluation of caving as a mining method for the Udachnaya underground diamond mine project. Proceedings of the Fourth International Symposium on Block and Sublevel Caving. Australian Centre for Geomechanics, Perth, 2018, pp. 835-846.
9. Couto P.M., Green S. Improving the mining efficiencies utilising a combination of elongates and packs at Unisel Mine. Welkom: AMMSA On-line Publication, 2018, pp. 1-12.
10. Sainsbury D.P., Sainsbury B.L., Board M.P., Loring D.M. Numerical back-analysis of structurally controlled cave initiation and propagation at the Henderson Mine. The 45th US Rock Mechanics. Geomechanics Symposium, San Francisco, CA, June 26-29, 2011.
11. Guéguen Y., Kachanov M. Effective elastic properties of cracked rocks – An overview. Leroy Y.M., Lehner F.K. (eds.) Mechanics of Crustal Rocks. CISM Courses and Lectures. Vienna: Springer, 2011, pp. 73-126.
12. Woo K., Eberhardt E., A. van As. Characterization and empirical analysis of block caving induced surface subsidence and macro deformations. ROCKENG09: Proceedings of the 3rd CANUS Rock Mechanics Symposium, Toronto, May 2009. Diederichs M., Grasselli G. (eds.)
13. Bekbergenov D.K. Features of technology of repeated mining of ores in conditions of a collapsed underground area using the example of the Zhezkazgan deposit. Gornyi informatsionno-analiticheskiy byulleten (nauchno-tekhnichesky zhurnal) [Mining Informational and Analytical Bulletin (Scientific and Technical Journal)]. 2017;(special issue 3):3-14. (In Russ.)
14. Analysis of the possibility of working out the reserves of the Annenskaya and 57 mines located in the shift trough. No.04-3.1.4-9-52 dated 16.10.19. Geomechanical Department of the Surveying and Geomechanical Service, Mine Management of MMC LLP Kazakhmys Corporation. 8 p. (In Russ.)
15. Survey information of mining workings falling into the shift trough and 150m shift trough zone in 2004-2006 for the Annenskaya mine, the East Zhezkazgan Mine, dated 1-31.10.2014. 12 p. (In Russ.)
16. On the issue of prospects of developing mining operations in the Annensky district. General condition of the shift trough area in 2004, 2006 and the 150-meter zone around it. No.08-23-21-618 dated August 12, 2011. Geomechanical Administration of LLP Kazakhmys Corporation. 11 p. (In Russ.)
17. Expert assessment of the possibility of working out reserves within the shift zones formed as a result of collapses in 2004-2006 in the fields of the East and Annenskaya mines. Head of the Laboratory of Geodynamics and Rock Pressure, Institute of Mining, Ural Branch of the Russian Academy of Sciences, Professor O.V. Zoteev, DrSc (Eng.), dated 04.12.2009. 7 p. (In Russ.)
18. Assessment of involvement in repeated mining of blocks of upper horizons adjacent to the shift trough from the east (block 25 of Annenskaya mine (Ann.) 8-II, 270 m horizon; block 6 of Ann. 7-II-I, 170 m horizon; block 26 of Ann. 6-II, 230 m horizon). No. 04-3.1.4-9-204 dated 11.07.2019. JSC Zhezkazgantsvetmet, Geomechanical Department, LLP Kazakhmys Corporation. 9 p. (In Russ.)
19. Geomechanics opinion and recommendations on the issue of final extraction of reserves in the shift zone and mining units adjacent to it in the Annenskaya mine. Mining and Geomechanical Administration of JSC Zhezkazgantsvetmet. No. 67-21-944 dated 01.10.2008. 7 p. (In Russ.)
20. Opinion on conducting mining operations in the vicinity of collapsed sections of the Annenskaya mine in 2004 (block 3-3bis, Ann-2-II-I; block 7 Ann-2-IV; block 31 Ann-2-II-I; block 12 bis Ann-3-II), No.03-23-21-747 dated 21.07.2009. Mining and Geomechanical Administration of JSC Zhezkazgantsvetmet. 2 p. (In Russ.)
21. Opinion on conducting mining operations in the sections of the Annenskaya mine in the 150-meter zone adjacent to the shift trough in 2004 (block 6 of Ann. 7-I; block 11-south Ann. 3-Iv; block 25-south Ann. 8-II, block 4-south Ann. 4-II-I), No.03-23-21-691 dated 25.06.2009. Mining and Geomechanical Administration of JSC Zhezkazgantsvetmet, Branch of LLP Kazakhmys Corporation. 3 p. (In Russ.)
22. Opinion on conducting mining operations in the vicinity of collapsed sections of the Annenskaya mine in 2004 (Mining and development of block 12 Ann-3-II; block 11 south Ann-2-IV). No.03-23-21-1331 dated 14.12.2009. Mining and Geomechanical Administration, Surveying and Geomechanical Division of Kazakhmys Corporation. 2 p. (In Russ.)
23. Geomechanics opinion on conducting mining operations in the sections of the Annenskaya mine in the shift trough and adjacent areas. No.03-25-1366 dated 26.12.2009. Mining and Geomechanical Administration, Surveying and Geomechanical Division of Kazakhmys Corporation. 5 p. (In Russ.)
24. The 2022 Final Report on the R&D subject: “Study on correspondence of the parameter determination and the mining systems in the Annenskaya mine of the East Zhezkazgan Mine” (stage 2). Project Manager: Bekbergenov D.K., LLP Kazakhstan Scientific and Research Institute for Non-Ferrous Metallurgy. Almaty, 2022, 347 p. (In Russ.)