Golik V. I., Razorenov Iu. I., Gabaraev O. Z., Karginov K. G. – North Caucasian Institute of Mining and Metallurgy,
Vladikavkaz, the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The article is dedicated to rational schemes of developing ore deposits at large deposits with complex structure
for underground mining with the improvement of output ore quality and workplace safety. Critical analysis of patent literature
over the use of development schemes at deposits with the same conditions is fulfilled, together with physical modeling of
broken ore output conditions at equivalent materials. Complex criterion is formulated to estimate the variants of reserves
preparation for stoping with inclined descents, the essence of which reduces to representative and objective estimation
of required scope of development mining operations in providing required speed of mining depth increase, capacity of
mobile drilling and haulage equipment within a shift, regular aeration of stoping faces, and labour efficiency. Quantitative
assessment of level development variants is fulfilled with the optimization of distance between workings and the account
of support pressure at the stages of works development. Quantitative results of modeling broken ore output parameters
dependencies are introduced. For the conditions in question, optimal variants of development with inclined descents with
varied location towards ore deposits are recommended.

Key words: ore deposits; large deposits; mining development; level; inclined descent; ore output; working.

REFERENCES
1. Allaberdin A. B. [Rationale for the parameters of storey-chamber system of development with combined stowing in
mining with ascending order at chalcopyrite deposits]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of
the Higher Institutions. Mining Journal, 2015, no. 1, pp. 1–15. (In Russ.)
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gold field Saulyak]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining
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3. Rylnikova M. V., Angelov V. A., Turkin I. S. [Distinctive features of technological and design solutions on disposal of
waste of ore mining and processing in a worked-out area]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News
of the Higher Institutions. Mining Journal, 2015, no. 2, pp. 56–59. (In Russ.)
4. Neverov A. A. [Geomechanical estimation of combined geotechnology under thick flat ore deposit development].
Fiziko-tekhnicheskie problemy razrabotki poleznykh iskopaemykh – Physical and Technical Problems of Mining, 2014,
no. 1, pp. 119–132. (In Russ.)
5. Golik V. I. Prirodookhrannye tekhnologii razrabotki rudnykh mestorozhdenii: ucheb. posobie [School book
“Environmental technologies of developing ore deposits”]. Moscow, Infra Publ., 2014. 190 p.
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pp. 9–18. (In Russ.)
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mining and processing]. Vladikavkaz, Terek Publ., 1998. 510 p.
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effektivnost' razrabotki rudnykh mestorozhdenii [Control over technological complexes and economic efficiency of ore
deposits development]. Vladikavkaz, Terek Publ., 2001. 390 p.
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Metallurgical and Mining Industry, 2015, vol. 7, no. 5, pp. 401–405.
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[Cement-free laying at mining enterprises]. Moscow, CSRI of Economics and Information Publ., 1992. 95 p.
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and Mining Industry, 2015, no. 6, pp. 591–594.
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mining. Metallurgical and Mining Industry, 2016, no. 1, pp. 209–212.
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Metallurgical and Mining Industry, 2016, no. 7 , pp. 76–79.
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Blinkov O. G. – Ural Federal University, Ekaterinburg, the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Dmitriev V. T., Boiarskikh G. A. – The Ural State Mining University, Ekaterinburg, the Russian Federation.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The article introduces the results of the use of plasma technology to reinforce the elements of cutter rock drilling bits.
The method of hard facing is currently being widely used; the method is based on getting ionic component of metal in the
plasma of arc discharge. The main advantage, which has predetermined the wide spread occurrence of vacuum ionicplasma method is the fact that in within a compact and simple device it is possible to obtain plasma jet of metal with high
level of ionization and high average ion kinetic energy. It makes it possible to transfer thermodynamically-equilibrium
covering generation process into essentially non-equilibrium – straight plasma chemical synthesis. At that the values of
critical temperatures at which the required level of adhesion is obtained, high rate of connection formation reaction, and
the required level of cohesive interaction, can be reduced from 1000°С to near normal values. Furthermore, possibility
emerges to obtain coverings unique in composition with various content of components. As the result of investigations
fulfilled, optimal materials are determined, as well as parameters and regimes of plasma coating of abrasion-resistant
covering on link rails of bearing units of cutter rock drilling bits. Practical use of the investigation results will allow
significantly increase operational life and reliability of bearing units of a cutter rock drilling bit and, consequently, increase
efficiency and reduce the cost of drilling operations.

Key words: rock drilling bit; link rails; arc discharge; vacuum ionic-plasma method.

REFERENCES
1. Boiarskikh G. A., Simisinov D. I. [Comparative efficiency evaluation of rock drilling bits support elements
reinforcement]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining
Journal, 2002, no. 5, pp. 65–72. (In Russ.)
2. Simisinov D. I., Kurbanov Ia. M., Simisinov I. L., Gorbunov V. A. [The increase of technological indices roller bit
drilling heads to drill the Uralskaia ultradeep well SG-4]. Razvedka i okhrana nedr – Prospect and Protection of Mineral
Resources, 2003, no. 6, pp. 8–10. (In Russ.)
3. Simisinov D. I., Boiarskikh G. A., Dmitriev V. T. [Self-organizing tribosystem as a means of increasing operational
efficiency of rock drilling bit supports]. Gornoe oborudovanie i elektromekhanika – Mining Equipment and
Electromechanics, 2006, no. 8, pp. 25–28. (In Russ.)
4. Serikov D. Iu., Panin N. M., Ageeva V. N. [Rock drilling bit bearing units hermetization system development].
Stroitel'stvo neftianykh i gazovykh skvazhin na sushe i na more – Oil and Gas Wells Construction on Land and Sea,
2016, no. 4, pp. 16–19. (In Russ.)
5. Popov A. N., Batalov S. P., Torgashov A. V. and others. [Peculiarities of wastage and ways of improving bits plain
bearings rigidity]. Problemy neftegazovogo kompleksa Rossii; tezisy dokl. Vseros. nauch.-tekhn. konf. [Proc. All-Russ.
Sci. and Tech. Conf. “The problems of oil and gas complex in Russia”]. Ufa, USPTU Publ., 1995, pp. 105–109.

G
Ratushniak A. N., Baidikov S. V. – Institute of Geophysics, Ural Branch of RAS, Ekaterinburg, the Russian Federation.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Teplukhin V. K. – Petrotool LLC., Oktyabrsky, Republic of Bashkortostan, the Russian Federation.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The purpose of investigating wells with electro-magnetic methods of logging in the process of drilling is the determination
of conductive properties of geological medium with the account of spatial heterogeneities: well space with drilling fluid and
enclosing rock which are intersected by the drilled well. The article fulfills the analysis of calculations of electro-magnetic
field under harmonic and impulse source regimes in the shape of magnetic dipole for cylindrically-symmetric medium
which is heterogeneous according to its specific electrical resistance. Informative parameters are introduced for electromagnetic field under harmonic and impulse source regimes, which help to determine conductive properties of
homogeneous enclosing geological medium. The possibility is examined to use inductive impulse and parametric
soundings to determine specific electric resistance of rocks with the account of conductive drilling fluid influence under
the well investigations in the process of drilling.
102 «Известия вузов. Горный журнал», № 3, 2017 ISSN 0536-1028
Key words: harmonic and impulse electro-magnetic field; inductive impulse and parametric soundings; logging in the
process of drilling.
REFERENCES
1. Doll' G. [The theory of inductive method of investigating well log and its application in the wells drilled with clay
fluid on oil]. Voprosy promyslovoi geofiziki – The Problems of Petroleum Geophysics, 1957, pp. 252–274. (In Russ.)
2. Ratushniak A. N., Baidikov S. V., Teplukhin V. K. [Inductive logging of wells with the account of conductive drilling
fluid influence]. Ural'skii geofizicheskii vestnik – Urals Geophysical Bulletin, 16, no. 1(27), pp. 40–47. (In Russ.)
3. Nikitina V. N. [General decisions of axis symmetric task of inductive logging theory]. Izvestiia AN SSSR.
Ser. “Geofizika” – News of USSR Academy of Sciences. Ser. “Geophysics”, 1960, no. 4, pp. 607–616. (In Russ.)
4. Van'ian L. L. Osnovy elektromagnitnykh zondirovanii [Fundamentals of electro-magnetic sounding]. Moscow, Nedra
Publ., 1965. 109 p.
5. Atabekov G. I. Teoreticheskie osnovy elektrotekhniki. Ch. 1. Lineinye elektricheskie tsepi [Theoretical fundamentals
of electrical engineering. Pt. 1. Linear electric circuits]. Moscow, Energiia Publ., 1978. 592 p.
6. Lоngman I. M. A method for the numerical evaluation of finite integrals of oscillatory functions. Math. Comput. 1960,
vol. 14, no. 69, pp. 53–59.
7. Ditkin V. A., Prudnikov A. P. Spravochnik po operatsionnomu ischisleniiu [Reference book on operational calculus].
Moscow, Vyssh. shkola Publ., 1965. 466 p.
8. Kaufman A. A. [Inductive logging with the method of transient processes]. Geologiia i geofizika – Geology and
Geophysics, 1969, no. 7, pp. 125–131. (In Russ.)
9. Kaufman A. A., Sokolov V. P. Teoriia induktsionnogo karotazha metodom perekhodnykh protsessov [The theory of
inductive logging with the method of transient processes]. Novosibirsk, Nauka Publ., 1972, 108 p.
10. Pliusnin M. I., Vil'ge B. I. [Substantiation of inductive logging with the method of transient processes]. Izvestiya
vysshikh uchebnykh zavedenii. Geologiia i razvedka – News of the Higher Institutions. Geology and Exploration, 1969,
no. 5, pp. 158–165. (In Russ.)

Kozin V. Z., Komlev A. S., Volkov P. S. – The Ural State Mining University, Ekaterinburg, the Russian Federation.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
When sampling products with low mass concentration of determined components relative accidental inclination may be
high. Under the low quantity of grains which contain the determined component in a sample, probable systematic
inclination may constitute 100%. Thus, large gold grains, long-fiber asbestos and other may not be found in the weighed
quantities for analysis. General solution of accidental and probable systematic inclinations reduction is connected with the
inclusion of concentration operation in the scheme of samples preparation. It helps fulfilling the analysis over the large
sample mass. Concentration operation under samples preparation becomes efficient under the extraction of determined
component into the concentrate with the value which is higher than the one that depends on the analysis inclinations, both
ore and tailings. Transfer to the analysis of great samples at mass allows reducing probable systematic inclination up to
acceptable low values.
Key words: samples preparation scheme; concentration operation; probable systematic inclination.
REFERENCES
1. Romanchuk A. I., Nikulin A. I., Zharkov V. V., Koblov V. V. [Technology and hardware to recover free gold out of
the samples of gold ore]. Gornyi zhurnal – Mining Journal, 2003, no. 12, pp. 79–83. (In Russ.)
2. Petrov S. V., Bederova L. L., Borozdin A. P. [Regarding the methods of reliable determination of precious metals
content in the samples with large winning of native metals] Obogashchenie rud – Mineral Processing, 2015, no. 4,
pp. 44–48. (In Russ.)
3. Kavchik B. K. [The scheme of samples handling with preliminary extraction of coarse gold]. Zolotodobycha – Gold
Mining, 2013, no. 177, pp. 27–30. (In Russ.)
4. Kozin V. Z. Oprobovanie mineral'nogo syr'ia [Mineral raw materials sampling]. Ekaterinburg, UrSMU Publ., 2011.
316 p.
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5. Shemetov P. A., Bychkov V. N. [Quality control over the ore flow in Muruntau open pit]. Gornyi vestnik
Uzbekistana – Mining News of Uzbekistan, 2001, no. 2, pp. 31–35. (In Russ.)
6. Kozin V. Z., Komlev A. S. [Combined method of concentration products sampling and the equipment for its
realization]. Obogashchenie rud – Mineral Processing. 2014, no. 3, pp. 28–32. (In Russ.)
7. Komlev S. A. [Experimental determination of probable systematic inclination when sampling products of
concentration with combined method]. Gornyi zhurnal – Mining Journal, 2016, no. 6, pp. 84–90. (In Russ.)