Determination the effective application field of non-blasting technology 
and technologies for the hard rock preparation for excavation during surface mining

DREBENSTEDT, Carsten

LOZHNIKOV, Oleksii

SOBKO, Borys

English

eLibrary National Mining University

18  15. Singh, S.K. and Jayanthu, S. (2011): Implication of continuous miner in room and pillar mining for mass exploitation of underground coal deposits: An overview. Journal of Mines, Metals and Fuels, 59(3-4), 83-95.   USING NON-BLASTING TECHNOLOGIES FOR DESTRUCTION OF HARD ROCK IN SURFACE MINING  SOBKO Borys1, LOZHNIKOV Oleksii1 DREBENSTEDT Carsten2 1Dnipro University of Technology, Dnipro, Ukraine 2Technical University “Bergakademie Freiberg”  Purpose. Determination the effective application field of non-blasting technology and technologies for the hard rock preparation for excavation during surface mining. Methodology. The carry out researches are based on the study of the physical and mechanical rocks properties influence on the mining equipment productivity at the non-blasting preparation of hard rocks and the excavation technology on the operating expenditure of the mining enterprise. Findings. Current technological solutions in the field of non-blasting destruction of hard rock at the surface mining in practice allow increasing the economic efficiency of the mining enterprise and reducing the negative influence on the environment. The feasibility of using non-blasting technologies is confirmed in practice at the development hard rock with uniaxial compression strength of 20 – 90 MPa. The productivity of equipment at the non-blasting destruction of hard rocks in quarries depends on the physical and mechanical properties of rocks. The main factors that influence on the process of non-blasting destruction of hard rock by mining machines are strength, fracturing and abrasiveness of rocks.  The main difficulty in choosing effective technique and technology for the non-blasting preparation of rocks for excavation is the justification of the mining machine type in accordance with the given quarry productivity and grain size of the products. The results of the carry out researches show that continuous mining machines have high productivity in the non-blasting destruction hard rocks. At the same time, the capital and operating expenditure of the enterprise in this situation are much higher than using machines of cyclic action. A significant disadvantage of continuous machines in the non-blasting destruction of the hard rock is the regrinding of the mineral, which leads to an increase of its losses due to a decrease of the commodity fraction. Justification of the transition expediency from drilling and blasting to the non-blasting preparation of hard rock to the excavation should note specific conditions of mineral deposit and carried out individually, taking into account the reduction of expenditure for drilling and blasting, loading, crushing process.  Preliminary studies were carried out as part of the preparation of the grant application for the NATO Science for Peace and Security program. Key words: non-blasting technologies, mining equipment, hard rocks 19  References 1. Zou, Dingxiang (2017) "Non-blasting Excavation." Theory and Technology of Rock Excavation for Civil Engineering. Springer, Singapore. 269-283. 2. Labutin, V.N., Matthis A.R., Zaitseva A.A. (2005)"Explosive development of coal seams by excavators with a bucket of active action." Physico-technical problems of mining of mineral resources 2: 59-66. 3. Fomin, S.I., Faul A.A. (2013)"Ways to reduce the environmental pressure on mining regions." Notes of the Mining Institute 203. 4. Lozhnikov A.V. (2015) Prospects for the application of non-blasting methods for the development of hard rock in quarries // News of the Kremenchuk State Politechnical University. M. Ostrogradsky: Scientific works KDPU. 5. Gill, H., Jones, M. D., Jones, D. I. E., & Watson, J. L. (2006). Spon's Quarry Guide: To the British hard rock industry. CRC Press. 6. Bilgin, N., Dincer, T., & Copur, H. (2002). The performance prediction of impact hammers from Schmidt hammer rebound values in Istanbul metro tunnel drivages. Tunnelling and Underground Space Technology, 17 (3). 7. Imran, M. (2016). Variation of production with time, cutting tool and fuel consumption of surface miner 2200 SM 3.8. International Journal of Technical Research and Applications. 8. Schimm, B., & Georg, J. (2015). Wirtgen Surface Miner–The First Link of a Simple Extraction and Materials Handling Chain in “Medium Hard”- Rock. In Proceedings of the 12th International Symposium Continuous Surface Mining-Aachen 2014. Springer, Cham. 9. Casteel, K. (2009). German Equipment Suppliers Bet on Technology Though Times are Tough. Engineering and Mining Journal, 210(7), 42. 10. Gumenik, I.L., Lozhnikov, O.V., & Panasenko, A.I. (2013). Deliberate dumping technology for mining reclamation effectiveness improvement. Scientific Bulletin of National Mining University, (5).   LEACHING OF URANIUM DEPOSITS IN MONGOLIA  KHOMENKO Oleh1, & TSANDGJAV lkhagva2 1 Dnipro University of Technology, Dnipro, Ukraine 2 Mongolian university of science and technology, Ulaanbaatar, Mongolia  The paper outlines the results of field, laboratory, and theoretical studies on geotechnical parameters of uranium in-situ leaching (ISL) for hydrogenous deposits located in eastern Mongolia. The field and laboratory studies included drilling, geophysical surveying, testing and evaluation of mechanical and flow properties of uranium-bearing rocks, and evaluation of chemical compositions of 

USING NON-BLASTING TECHNOLOGIES FOR DESTRUCTION OF  HARD ROCK IN SURFACE MINING

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USING NON-BLASTING TECHNOLOGIES FOR DESTRUCTION OF HARD ROCK IN SURFACE MINING

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