Название |
Computerized design of blasting parameters based on drillability index of jointed rock mass in roller bit drilling in open pit mines |
Информация об авторе |
Belgorod State University, Belgorod, Russia:
V. N. Tyupin, Professor, Doctor of Engineering Sciences, tyupinvn@mail.ru I. M. Ignatenko, Director of the Institute of Earth Sciences, Candidate of Engineering Sciences
VIOGEM Research Institute, Belgorod, Russia:
I. B. Agarkov, Researcher I. S. Kryuchkov, Junior Researcher |
Реферат |
Blastability of rocks mainly depends on their strength (hardness) and jointing. Rock drillability is found both by Russian and foreign scientists using the rock strength and elasticity characteristics. In the meanwhile, practice shows that jointing in rock masses with joint sizes of 0.1–0.5 m increases the rate of drilling. Consequently, when determining the rate of roller bit drilling and drillability of rock mass, the jointing parameters of rocks should be taken into account. This article presents the found relations for finding the roller bit drilling rates, drillability index and the main blasting parameters in open pit mining in jointed rock masses. The relation of the roller bit drilling, drilling techniques and drillability index includes the hardness factor and the parameters of jointing. The formula of the drillability index of jointed rock mass is obtained. The validity of the relations is proved by the comparison of the calculation results with the physicotechnical properties of rocks, as well as with the Wenco system data on drilling in Verninsky Open Pit Mine of Polyuszoloto. Using the drillability index, the formulas are obtained for determining the powder factor and explosive charge weight per hole. On the whole, based on the drilling data, a dedicated software program is designed for determining the drilling index and the main blasting parameters in open pit mines at the preset fragmentation quality for jointed rock mass. The authors express their gratitude to V. I. Volkov, I. V. Rykov and N. N. Zakharov, specialists from Verninsky OPM, for their help in these studies. |
Библиографический список |
1. Kutuzov B. N. Disintegration and explosive fracture of rocks : tutorial. Moscow : Nedra, 1973. 311 p. 2. Mosinets V. N., Pashkov A. D., Latyshev V. A. Rock fracture : tutorial. Moscow : Nedra, 1975. 215 p. 3. Tangaev I. A. Energy intensity of the processes of extraction and processing of min erals. Moscow : Nedra, 1986. 231 p. 4. Kryukov G. M. Physics of destruction of rocks while drilling and blasting. Moscow : Gornaya kniga, 2006. Vol. 1. 330 p. 5. Repin N. Ya., Bogatyrev V. P., Butkin V. D., Tashkinov A. S. Dri lling-and-blasting in open pit coal mines. Moscow : Nedra, 1987. 254 p. 6. Miyora T., Jónsson M. Þ., Þórhallsson S. Modelling of Geothermal Drilling Parameters – A Case Study of Well MW-1 7 in Menengai Kenya. Geothermal: Always on : Geothermal Resources Council Annual Meeting (GRC 2015). Reno, 2015. Vol. 39. pp. 197–208. 7. Abbaspour H., Drebenstedt C., Badroddin M., Maghaminik A. Optimized design of drilling and blasting operations in open pit mines under technical and economic uncertainties by system dynamic modelling. International Journal of Mining Science and Technology. 2018. Vol. 28, Iss. 6. pp. 839–848. 8. Eremenko V. A., Neguritsa D. L. Efficient and active monitoring of stresses and strains in rock masses. Eurasian Mining. 2016. No. 1. pp. 21–24. DOI: 10.17580/em.2016.01.02 9. Sinev S. V. Drilling In Situ Models. Oil and Gas Territory. 2016. No. 11. pp. 41–49. 10. Shigin A. O., Shigina A. A., Bovin K. A. Improving roller bit drilling rig performance by timely regulation of operating parameters. Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta. 2015. No. 8(103). pp. 65–72. 11. Capik M., Yilmaz A. O., Yasar S. Relationships between the drilling rate index and physicomechanical rock properties. Bulletin of Engineering Geology and the Environment. 2017. Vol. 76, Iss. 1. pp. 253–261. 12. Armaghani D. J., Mohamad E. T., Hajihassani M., Alavi Nezhad Khalil Abad S. V., Marto A. et al. Evaluation and prediction of flyrock resulting from blasting operations using empirical and computational methods. Engineering with Computers. 2016. Vol. 32, Iss. 1. pp. 109–121. 13. Saksala T., Fourmeau M., Kane P.-A., Hokka M. 3D finite elements modelling of percussive rock drilling: Estimation of rate of penetration based on multiple impact simulations with a commercial drill bit. Computers and Geotechnics. 2018. Vol. 99. pp. 55–63. 14. Beshenkov P. S., Polushin N. I., Gkhorbani S., Sorokin E. N. Stress distribution analysis of PDC drill bits by computer modeling. Eurasian Mining. 2017. No. 2. pp. 25–28. DOI: 10.17580/em.2017.02.06 15. Kaledin O. S. Innovative construction technology of ultra deep shafts. Gornyi Zhurnal. 2014. No. 4. pp. 77–81. 16. Sinev S. V. M echanisms, methods and ways of destruction of rocks in roller bit drilling. GIAB. 2016. No. 1. pp. 149–159. 17. Tyupin V. N. Finding velocity of roller-bit and rotary-percussive drilling using the energy conservation law. GIAB. 2020. No. 6. pp. 76–84. 18. Typin V. N. Blasting and Geomechanical Processes in High-Stress Fractured Rock Mass. Belgorod : ID “Belgorod”, 2017. 192 p. 19. Trubetskoy K. N., Potapov M. G., Vinitskiy K. E., Melnikov N. N., Aleshin B. G. et al. Open-cast mining : reference book. Moscow : Gornoe byuro, 1994. 590 p. 20. Protodyakonov M. M., Teder R. I., Ilnitskaya E. I., Yakobashvili O. P., Safronova I. B. et al. Distribution and correlation of indicators of physical properties of rocks : reference book. Moscow : Nedra, 1981. 192 p. 21. Ignatenko I. M., Dunaev V. A., Tyupin V. N. Improving procedure of pre-project assessment of hard rock blastability in open pit mines. Gornyi Zhurnal. 2019. No. 1. pp. 46–50. DOI: 10.17580/gzh.2019.01.10 |