Analysis of applying blast-free technologies in conditions of cryolithic zones

DOI: https://doi.org/10.30686/1609-9192-2022-5-131-134
Читать на русскоя языкеD.V. Khosoev
Chersky Mining Institute of the North, Siberian Branch, Russian Academy of Sciences, Yakutsk, Russian Federation
Russian Mining Industry №5 / 2022 р. 131-134

Abstract: Operation of mining equipment has been analyzed at coal, diamond mining and other min-ing enterprises in conditions of cryolithic zones. Hydraulic breakers, dynamic buckets on ex-cavators, rippers on bulldozers, bar cutters, continuous mining machines, and in some cases, rotary mechanical shovel are used in blast-free mining. It is noted that the hydraulic shovels are characterized with high excavation forces, can be used in selective mining, can clean the foot wall without using a bulldozer, and can reduce or sometimes completely eliminate drill-ing and blasting operations. Boundary values of the face slope angle depending on the ambi-ent temperatures were established during the tests of RS-5500 at the Neryungrinsky open pit mine. Its value is equal to 46º in positive temperature; while during the interseasonal pe-riods the value stands at 60º, and in conditions of extremely low temperatures this value reaches 72º. Experience of using the LIEBHERR hydraulic shovels in building stone quarries shows that the uniaxial compressive strength of the rocks developed without blast pre-conditioning can reach 20-150 MPa. The Caterpillar company proposed a technology for ripping and excavating rocks (up to hard rocks) with quickly replaceable attachment tools. Based on analyzing physical and mechanical properties of the overburden rocks and coal at the deposit with account of cutting forces of the working tool, Mining Institute of the North of Siberian Branch of the Russian Academy of Sciences justified the possibility of using and es-tablished estimated performance parameters of the KCM-2000P Continuous Miner for the rocks and coals of the Elga deposit. Taking into account mining and geological conditions and rock properties of the Elga deposit, specialists of Wirtgen International GmbH calculated the technical and economic parameters of coal and overburden excavation using the Wirtgen 4200SM Surface Miners with loading into the 130-ton dump trucks.

Keywords: permafrost, hydraulic shovels, blast-free mining, excavation forces, bulldozers, ripping, loading, overburden removal, surface miners, physical and chemical conditioning

For citation: Khosoev D.V. Analysis of applying blast-free technologies in conditions of cryolithic zones. Russian Mining Industry. 2022;(5):131–134. https://doi.org/10.30686/1609-9192-2022-5-131-134

Article info

Received: 15.09.2022

Revised: 06.10.2022

Accepted: 06.10.2022

Information about the author

Dorzho V. Khosoev – Lead Engineer, Chersky Mining Institute of the North, Siberian Branch, Russian Academy of Sciences, Yakutsk, Russian Federation; ORCID: https://orcid.org/0000-0002-1466-8509; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

References

1. Shchadov V.M. Open-pit mining of complex coal deposits in Eastern Siberia and the Far East. Moscow: Moscow State Mining University; 1998. (In Russ.)

2. Yakovlev V.L. Implementation of the In Pit Crushing and Conveying System in surface mining. Gornyi vestnik. 1997;(1):22. (In Russ.)

3. Burakov A.M., Panishev S.V., Alkova E.L., Khosoev D.V. Experience of using hydraulic excavators in difficult mining, geological and climatic conditions. Russian Mining Industry. 2022;(2):90–96. (In Russ.) https://doi.org/10.30686/1609-9192-2022-2-90-96

4. Anistratov K.Yu. World trends of the surface mining machinery fleet development. Russian Mining Industry. 2011;(6):22–26. (In Russ.) Available at: https://mining-media.ru/ru/article/karertekh/400-mirovye-tendentsii-razvitiya-struktury-parka-karernoj-tekhniki

5. Bratchikov N.V., Shornikov V.V., Antipov D.A. Blastless rock mining technology. Cement and its Applications. . 2013;(1):2–3. (In Russ.)

6. Dombrovsky N.G., Shemyakin S.A. Increasing productivity of trench diggers in excavation of frozen ground. In: Optimal use of machines in construction. Khabarovsk; 1974. Iss. 3, pp. 33–38. (In Russ.)

7. Alshits M.Z., Kovalev E.P., Sokolov G.I. ETR-254-01 trench rotary mechanical shovel. Construction and Road Building Machinery. 1983;(9). (In Russ.)

8. Novopashin M.D. On the use of rotary mechanical shovels in Kimberlite ore mining. Mining Informational and Analytical Bulletin. 1996;(5):32–34. (In Russ.)

9. Lutsishin S.V. Creating a blast-free technology for kimberlite mining by layer-wise cutting: PhD (Engineering) dissertation abstract. Moscow; 1995. 19 p. (In Russ.)

10. Usachev V.M., Yurin N.N., Yalputa G.V. Testing of the K-650 compact rotary mechanical shovel at the Udacha Tube open-pit in Northern Yakutia. Russian Mining Industry. 1995;(4):2–4. (In Russ.) Available at: https://mining-media.ru/ru/article/newtech/463-ispytaniyakompaktnogo-rotornogo-ekskavatora-k-650-na-karere-tr-udachnaya-v-severnoj-yakutii

11. Khosoev D.V., Ermakov S.A. Estimation of technologies of development a coal deposit of Elginskoe. Ugol’. 2009;(11):9–11. (In Russ.)

12. Ermakov S.A., Il A.P., Khosoev D.V. Assessment of the efficiency of Wirtgen surface miners operation at Elga hard coal deposit. Russian Mining Industry. 2018;(6):22–24. (In Russ.) https://doi.org/10.30686/1609-9192-2018-6-142-77-79

13. Yakubovsky M.M. Justification of efficiency of cutter-loaders application in selective mining of coal deposits in conditions of low temperatures. / Yakubovsky M.M., Mikhailova E.A., Bazhukov A.A. // Mining Informational and Analytical Bulletin. – 2021. (10). – P.42-57.