Assessment of the extent of man-induced transformation of a subsoil block in upward mining using ore and host rock caving

DOI: http://dx.doi.org/10.30686/16099192-2021-4-113-118
A.M. Mazhitov
Nosov Magnitogorsk State Technical University, Magnitogorsk, Russian Federation
Russian Mining Industry №4 / 2021 р. 113-118Читать на русскоя языке

Abstract: The study provides a geomechanical assessment of the man-induced transformation of the 1st block at the Kamaganskoye deposit when the mining system is changed to sub-level caving of the ore and host rocks with no possibility of changing the order of reserve extraction. The relevance of the research results from detailed exploration activities that revealed changes in the ore body boundaries and a decrease in the ore grades. The possibility of partial mining of blocks in ore bodies No. 16 and 17 using the ore and host rock caving system has been assessed and the possibility of retaining the upward mining sequence has been established. The sequence of room mining is defined taking into account the changes in the ore body boundaries. The paper presents the results of assessing the stability of the undermined masses of ore bodies No. 16 and 17, as well as the stress-andstrain state of the rock mass at the assumed sequence of room mining. The results of mathematical modeling of the rock mass stress-and-strain state during room mining using the ore and host rocks caving system proved the technical feasibility of this solution.

Keywords: controlled man-induced transformation, deposit with a complex structure, ore caving, host rock caving, mining sequence, rock mass stability

* The work was performed with financial support from Grant of President of the Russian Federation No. MD-3602.2021.1.5

For citation: Mazhitov A.M. Assessment of the extent of man-induced transformation of a subsoil block in upward mining using ore and host rock caving. Gornaya promyshlennost = Russian Mining Industry. 2021;(4):113–118. (In Russ.) DOI 10.30686/16099192-2021-4-113-118.

Article info

Received: 01.07.2021

Revised: 20.07.2021

Accepted: 22.07.2021

Information about the author

Artur M. Mazhitov – Candidate of Technical Sciences (PhD in Engineering), Associate Professor, Head of the Department of Mining Machines and Transportation Technological Complexes, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

References

1. Dashko R.E., Kotyukov P.V., Shidlovskaya A.V. Hydrogeological conditions effect on safety of underground space expansion during transport tunnel construction. Zapiski Gornogo Instituta = Journal of Mining Institute. 2012;199:151–160. (In Russ.) Available at: https://pmi.ru/index.php/pmi/article/view/5812

2. Yakunchikov E.N., Agafonov V.V. Designing high-performance amrabat-ing reserves of coal extraction sections of coal mines in complicated geological conditions. MIAB. Mining Inf. Anal. Bull. 2017;(S40):17–20. (In Russ.) https://doi.org/10.25018/0236-1493-2017-12-40-17-20

3. Kharisov T.F., Kharisova O.D. Geomechanical substantiation of the parameters of stable chambers and pillars in complex mining and geological conditions. Izvestiya Tomskogo politekhnicheskogo universiteta. Inzhiniring georesursov = Bulletin of the Tomsk Polytechnic University. Geo Assets Engineering. 2019;330(7):25–33. (In Russ.) https://doi.org/10.18799/24131830/2019/7/2173

4. Eremenko A.A., Bashkov V.I., Filippov V.N. Evaluation of design data of geotechnology for transition from room-and-pillar mining to sublevel caving at rockburst-hazardous deposit. Fundamentalnye i prikladnye voprosy gornykh nauk = Fundamental and Applied Issues of Mining. 2016;3(1):50–55. (In Russ.)

5. Smirnov A.A., Nikitin I.V. Justifying the types and methods of adapting the mining technological system of a mining enterprise to changing conditions of underground mining. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2019;(6):14–20. (In Russ.) https://doi.org/10.21440/0536-1028-2019-6-14-20

6. Balek A.E., Sashurin A.D., Kharisov T.F. Improvement of underground mining of Sokolovskoe deposit by systems with caving under conditions of watered overlying rocks. Problemy nedropolzovaniya. 2019;(1):5–13. (In Russ.) https://doi.org/10.25635/2313-1586.2019.01.005

7. Mecsherykov E.Y., Ugryumov A. N. Geomechanical substantiation of a scope of systems of working out with a collapse of ores and breeds at development of deposits. Vestnik Magnitogorskogo gosudarstvennogo tekhnicheskogo universiteta = Vestnik of Nosov Magnitogorsk State Technical University. 2009;(3):8–11. (In Russ.)

8. Mazhitov A.M., Mescheryakov E.J. Definition of parameters and indicators adaptive version of the system design with area-butt release for the conditions of working off flat deposit. Vestnik Magnitogorskogo gosudarstvennogo tekhnicheskogo universiteta = Vestnik of Nosov Magnitogorsk State Technical University. 2013;(2):5–8. (In Russ.)

9. Veselov A.I. Depth-related changes in mining and geological conditions of iron ore deposits in Gornaya Shoria and Khakassia. In: Babansky M.D. (ed.) Ore deposits. Mineralogy. Geochemistry. Tomsk: Tomsk State University; 2003, pp. 35–45. (In Russ.)

10. Seredin V.V., Pushkareva M.V., Leibowich L.O., Bacharev A.O., Tatarkin A.V., Filimonchikov A.A. Geological environment changes during oil fields development in complex geological conditions. Neftyanoe khozyaistvo = Oil Industry. 2014;(12):153–155. (In Russ.)

11. Eberhardt E. The Hoek–Brown Failure Criterion. Rock Mechanics and Rock Engineering. 2012;45:981–988. https://doi.org/10.1007/00603-012-0276-4

12. Jaeger J., Cook N.G., Zimmerman R. Fundamentals of Rock Mechanics. Wiley-Blackwell; 2007. 475 p.

13. Mamaev Y.A., Vlasov A.N., Mnushkin M.G., Yastrebov A.A. The study of stress state and nechanism of rock massif deformation upon the formation of technonatural karst collapses. Geoekologiya. Inzhenernaya geologiya, gidrogeologiya, geokriologiya = Geoecology. Engineering Geology. Hydrogeology. Geocryology. 2019;(1):46–59. (In Russ.) https://doi.org/10.31857/S0869-78092019146-59

14. Kurlenya M.V., Mirenkov V.E., Serdyukov S.V. A view of the nature of the stress-and-strain state of the earth's subsurface and maninduced dynamic phenomena. MIAB. Mining Inf. Anal. Bull. 2008;(8):5–20. (In Russ.)

15. Sashourin A.D., Panzhin A.A., Melnik V.V. Securing open-pit walls for protection of hazardous areas of haulage benches. Vestnik Magnitogorskogo gosudarstvennogo tekhnicheskogo universiteta = Vestnik of Nosov Magnitogorsk State Technical University. 2016;14:(3):5–12. (In Russ.) https://doi.org/10.18503/1995-2732-2016-14-3-5-12

16. Mazhitov A.M., Korneev S.A., Pytalev I.A., Kravchuk T.S. The estimate of wall stability of open pit “Kamagan” in underground cleaningup of the deposits. MIAB. Mining Inf. Anal. Bull. 2015;(S4-2):205–215. (In Russ.)

17. Mazhitov A.M., Korneev S.A., Pytalev I.A., Kravchuk T.S. Evaluation of stable and safe pit wall slope design for underground extraction of mineral reserves under Kamagan open pit mine bottom. Gornyi Zhurnal. 2018;(2):27–30. (In Russ.) https://doi.org/10.17580/gzh.2018.02.03

18. Chumarina T.M., Kolesatova O.S. Comparison of methods to assess pit wall stability in combined mining system. Nauchnye issledovaniya i innovatsii. 2011;5(1):117–119. (In Russ.)

19. Mazhitov A.M. Assessment of the underground mining impact on the stress-and-strain state of the near-pit rock mass of the Kamaganskoye deposit. Aktualnye problemy gornogo dela. 2016;(1):29–35. (In Russ.)

20. Bahri Najafi A., Saeedi G.R., Ebrahimi Farsangi M.A. Risk analysis and prediction of out-of-seam dilution in longwall mining. International Journal of Rock Mechanics and Mining Sciences. 2014;70:115–122. https://doi.org/10.1016/j.ijrmms.2014.04.015