Mining of Mineral Deposits

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Improvement of hole drilling technology for ore drawing intensification

V. Golik1, V. Morkun2, N. Morkun2, I. Gaponenko2

1North Caucasian Mining and Metallurgical Institute (State Technological University), Vladikavkaz, Russian Federation

2Kryvyi Rih National University, Kryvyi Rih, Ukraine


Min. miner. depos. 2018, 12(3):63-70


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      ABSTRACT

      Purpose. The improvement of hole drilling for increasing the mineral recovery ratio by ore drawing improvement through blasting.

      Methods. The drilling parameters were examined for rock dumps. The means of experimental drilling are drilling rig SKB-4; drill rods with a diameter of 42 mm and a length of 1.2 m; polyethylene pipes PND 63×8 and PND 70×8 with a length of 1.2 m; steel couplings for polyethylene pipes connecting; cone bits and RKS cutters. The criterion of drilling efficiency was the mechanical drilling speed. The drilling speed at different depths was measured with an axial force of 800 – 2000 kg and rotational speeds of 120, 200 and 280 rpm. Experimental drilling was carried out using the charges of two modifications. 18 experimental boreholes with a length of 300 m were drilled.

      Findings. The article confirms possibility and practicability of simultaneous hole drilling and pipe casing without transmitting torque loads on the pipes and offers a design of a drill string with hoses inside drill rods and their further pulling up, and piping with simultaneous drilling. The scheme of interaction of blastholes and pipe casing when hole boring in broken ores is made. The nature of the relationship between the speed of penetration of vertical and horizontal holes with the change in the axial force and their length for different modifications of the drilling tool is studied.

      Originality. The new laws of change in the hole drilling penetration speed depending on the complex of technological parameters of drilling are obtained. The authors offer a model describing the possibility of hole drilling in the broken massif as well as an optimized design of the string necessary for that.

      Practical implications. The obtained regularities determine mechanical and energy drilling indexes and which are necessary at the stage of designing when deciding upon practicability of extraction of in-situ left ores while enhan-cing mining technologies of ore drawing.

      Keywords: improved ore drawing, packed ores, blasthole, drilling string, casing pipe


      REFERENCES

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

Benardos, A., Athanasiadis, I., & Katsoulakos, N. (2014). Modern earth sheltered constructions: a paradigm of green engineering. Tunnelling and Underground Space Techno-logy, (41), 46-52.
https://doi.org/10.1016/j.tust.2013.11.008

Bowman, S. (2016). Interferometric synthetic aperture radar (InSAR). Back-ground and application: guidelines for investigating geologic hazards and preparing engineering geology reports, with a suggested approach to geologic-hazard ordinances in Utah. The University of Utah, 198-203.

Bubnov, V., Spirin, E., Kapkanshchikov, A., Golik, V., Smir-nov, Y., Vorobyev, A., Sytnikov, A., Yevseyev, L., Pigu-lskiy, V., Zabortsev, S., Rudenko, N., Bereza, V., & Shamonin, V. (1992). Teoriya i praktika dobychi poleznykh iskopayemykh dlya kombinirovannykh sposobov vyshchelachivaniya. Akmola, Kazakhstan: Zha-on-Arch.

Capilla, A., & Delgado, A. (2015). The destiny of the Earth’s mineral resources. London, United Kingtom: World Scientific Publishing Co. Pte. Ltd.

Demchenko, O., Evtekhov, V., & Georgiieva, H. (2017). Mineral composition of high-grade iron ores that are one of the components of coarse grained screenings from crushing and screening plants in the Kryvyi Rih basin. Visnyk of Taras Shevchenko National University of Kyiv. Geology, 2(77), 77-81.
https://doi.org/10.17721/1728-2713.77.09

Dmitrak, Y., & Kamnev, Y. (2016). Vedushchiy proyektno-izyskatelskiy i nauchno-issledovatelskiy institut promyshlennoy tekhnologii – put dlinoy v 65 let. Gornyy Zhurnal, (3), 6-12.

Golik, V., Komaschenko, V., Morkun, V., & Burdzieva, О. (2015). Modelling of rock massifs tension at underground ore mining. Metallurgical and Mining Industry, (8), 540-543.

Golik, V., Komaschenko, V., Morkun, V., & Khasheva, Z. (2015). The effectiveness of combining the stages of ore fields development, Metallurgical and Mining Industry, 7(5), 401-405.

Golik, V., Komashchenko, V., Morkun, V., & Burdzieva, O. (2017). Experience of metal deposits combined development for South African enterprises. Mining of Mineral Deposits, 11(2), 68-78.
https://doi.org/10.15407/mining11.02.068

Gur’yeva, Y. (2009). Povysheniye polnoty ispolzovaniya nedr intensifikatsiyey vypuska pri dobyche poteryannykhrud. PhD Thesis. Vladikavkaz, Russian Federation: Severo-Kavkazskiy gorno-metallurgicheskiy institut.

Iofis, M., Fedorov, E., Yesina, E., & Miletenko, N. (2017). Razvitiye geomekhaniki dlya resheniya problem sokhraneniya zemnykh nedr. Gornyy Zhurnal, (11), 67-74.

Kaplunov, D., Rylnikova, M., & Radchenko, D. (2015). Nauch-no-metodicheskiye osnovy proyektirovaniya ekologicheski sbalansirovannogo tsikla kompleksnogo osvoyeniya i sokhraneniya nedr Zemli. Gornyy Informatsionno-Analiti-cheskiy Byulleten, 4(15), 5-11.

Komashchenko, V. (2016). Razrabotka vzryvnoy tekhnologii, snizhayushchey vrednoye vozdeystviye na okruzhayushchuyu sredu. Izvestiya Tul’skogo gosudarstvennogo universiteta. Nauki o Zemle, (1), 34-43.

Komashchenko, V., Vasilyev, P., & Maslennikov, S. (2016). Tekhnologiyam podzemnoy razrabotki mestorozhdeniy KMA – nadezhnuyu syr’yevuyu osnovu. Izvestiya Tul’skogo gosudarstvennogo universiteta. Nauki o Zemle, (2), 101-114.

Luk’yanov, V.G., Komashchenko, V.I., & Shmurygin, V.A. (2017). Vzryvnyye raboty. Tomsk, Russian Federation: Natsionalnyy issledovatel’skiy Tomskiy politekhnicheskiy universitet.

Lyashenko, V., Nebogin, V., & Alekhin, A. (2015). Povysheniye ekologicheskoy bezopasnosti proizvodstva vzryvnykh rabot s pomoshch’yu emul’sionnykh vzryvchatykh veshchestv na kar’yerakh Ukrainy. ZAO NTTS PB. Bezopasnost’ truda v promyshlennosti, (4), 38-45.

Olovyannyy, A. (2016). Bokovoy raspor i tektonicheskiye napryazheniya v massive gornykh porod. Gornyy Zhurnal, (4), 25-31.

O’Sullivan, D., & Newman, A. (2014). Extraction and backfill scheduling in a complex underground mine. Interfaces, 44(2), 204-221.
https://doi.org/10.1287/inte.2013.0730

Wang, W., Huang, S., Wu, X., & Ma, Q. (2011). Calculation and management for mining loss and dilution under 3D visualization technical condition. Journal of Software Engineering and Applications, 04(05), 329-334.
https://doi.org/10.4236/jsea.2011.45037

Wang, H., He, Y., Duan, C., Zhao, Y., Tao, Y., & Ye, C. (2012). Development of mineral processing engineering education in China University of Mining and Technology. Advances in Computer Science and Engineering, 77-83.
https://doi.org/10.1007/978-3-642-27948-5_11

Yun, A., Rylnikova, M., & Terentyeva, I. (2015). O perspektivakh i strategii osvoyeniya Zhezkazganskogo mestorozhdeniya. Gornyy Zhurnal, (5), 44-49.

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