Iudin A. V., Shestakov V. 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.
At the stage of exploratory design the problem of the choice of technology for calcareous rock cleaning from clay and
karst intrusions is solved. Decision is made, which scheme of raw material cleaning complex devices chain should be
given preference. Similar problem is examined, which took place at designing Chanvin open pit depth horizons mining.
The article introduces the results of exploratory design and development of rational flow sheets for limestone cleaning
complexes in order to compare their parameters and technical-economic indices. The present article examines variants
82 «Известия вузов. Горный журнал», № 3, 2017 ISSN 0536-1028
of complexes technology flow sheets on the basis of native and foreign equipment; technical-economic estimation of
the compared variants of complex flow sheets is introduced.

Key words: raw material dry cleaning; clay intrusions; screen; limestone cleaning complex; qualitative-weighted flow
sheet; capacity; profitability index.

REFERENCES
1. Iudin A. V., Kovyrzin Iu. V., Shchavlev E. G., Koshev G. Ia., Primak V. S. [Limestone cleaning from clay technology
development under the exploitation of karst deposit]. Gornyi zhurnal – Mining Journal, 2009, no. 10, pp. 61–63.
(In Russ.)
2. Iudin A. V., Fomin V. I., Koshchev G. Ia., Konoplev E. V., Peters A. A. [Limestone dry cleaning dump transshipping
complex at Chanvin open pit]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions.
Mining Journal, 1996, no. 7, pp. 91–96. (In Russ.)

Starkov L. I., Shishliannikov D. I., Maksimov A. B. – Perm National Research Polytechnic University, Perm, the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The analysis of factors is fulfilled, which determine degradation of rock massifs breaking process with the cutters of heading machines and winning machines. It is indicated that the most frequent reason for rock-breaking tool of continuous miners’ failure is abrasive wear of the holder’s head and the loss of the hard alloy insert as the result of the action of significant side loads on the cutters holders. The construction and the principle of action are described for the cutter mounting device in the executive device of a continuous miner, which provides automated self-adjustment of the
cutter support body with the cutter in the process of rock massif breaking; this allows cutting without deviation along all the lines of the designed breaking scheme. Suggested engineering solutions provide the decline in the massif breaking process energy capacity and heading and winning machines cutters service life increase.

Key words: cutter; cutter holder; automated self-adjustment; continuous miner; executive device; cutting efficiency improvement; operating hours increase.

REFERENCES
1. Levankovskii L. A., Glatman L. B. [Analysis and estimation of the main factors and conditions influence on
the deterioration of rotating cutters during the work of heading machines]. Razrushenie gornykh porod i kompozitsionnykh
materialov povorotnymi reztsami: sb. nauch. tr. [Collected papers “Rock and composite materials breaking with rotating
cutters”]. Moscow, AGN Publ., 1998, issue 1, pp. 81–109. (In Russ.)
2. Chupin S. A., Bolobov V. I., Maksimov A. B. [Examination of rotating cutters holders material thermomechanical
processing influence on the material hardness]. Gornoe oborudovanie i elektromekhanika – Mining Equipment and
Electromechanics, 2016, no. 9, pp. 38–41. (In Russ.)
3. Chupin S. A. Povyshenie iznosostoikosti povorotnykh reztsov prokhodcheskikh kombainov dlia provedeniia vyrabotok
po porodam srednei kreposti: dis. … kand. tekhn. nauk [Heading machines rotating cutters durability improvement to
drive workings over medium-hard rocks. Cand. eng. sci. diss.]. St. Petersburg, 2016. 162 p.
4. Starkov L. I., Makarova L. E., Trifanov M. G., Shishliannikov D. I., Lauk V. V. Ustroistvo dlia krepleniia reztsa na
ispolnitel'nom organe gornoi mashiny [Cutter mounting device at a continuous miner executive device]. Patent RF,
no. 2602435, 2016.
5. Buevich V. V., Chekmasov N. V., Shishliannikov D. I., Gabov V. V. [Development executive devices in heading and
winning machines “Ural”]. Gornyi zhurnal – Mining Journal, 2016, no. 4, pp. 52–55. (In Russ.)

Borisov F. I., Morin A. S., Brovina T. A. – Siberian Federal University, Krasnoyarsk, the Russian Federation.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
A new way of dust suppression in open pits is suggested, based on water pulverization from pressure pipelines of water
drainage facilities. The elements of the dust suppression system have been examined, which are located along open pit
automobile roads. The article introduces the methods of detecting pressure characteristic of water drainage facility with
track water intake for dust prevention. Calculation of possible parameters of water drainage combined with the suggested
moistening system operation is fulfilled. On the basis of the obtained performance figures some recommendations on the
pumps selection are stated for open pit water drainage facilities with track consumption water flow rate in the areas of
roads moistening; conditions of these facilities rational use are also justified. It is shown, that capacity overstock of a pump
station under normal water inflows piping out to the open pit is an important factor for water drainage facilities effective
use to reduce air dust content.
Key words: opencast mining; safety rules; labour protection; poisonous gases; aerial dust; open pit roads moistening;
water drainage facilities; power water conduits; track water intake; hydraulic resistances; pressure loss; pressure
characteristic of a pipeline; pressure and pump capacity; normal water inflows.
REFERENCES
1. Nikitin V. S., Levinskii O. B., Suslov N. V. Obespylivanie atmosfery kar'erov [Dust removal in the atmosphere of
open pits]. Tashkent, FAN Publ., 1974. 160 p.
2. Semenenko B. A., Bukhman Ia. Z., Simakov P. G., Tarashchik A. D., Makarov V. I. [Dust control on open pit
automobile roads]. Opyt bor'by s zagazovannost'iu i zapylennost'iu atmosfery kar'erov [The experience of gas
72 «Известия вузов. Горный журнал», № 3, 2017 ISSN 0536-1028
contamination and dustiness protection in the atmosphere of open pits]. Moscow, NII Tsvetmetinformatsiia Publ., 1968,
pp. 69–75.
3. Morin A. S. [Investigation of optimal schemes and means of artificial ventilation in deep open pits]. Bezopasnost'
truda v promyshlennosti – Industrial Workplace Safety, 2002, no. 12, pp. 43–47. (In Russ.)
4. Morin A. S. [Fundamentals of open pit ventilation systems design with flexible floating pipeline]. Bezopasnost' truda
v promyshlennosti – Industrial Workplace Safety, 2003, no. 10, pp. 31–34. (In Russ.)
5. Morin A. S., Butkin V. D., Novoselov R. G. [Energy saving schemes and ways of artificial ventilation in deep open
pits]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining Journal, 2003,
no. 6, pp. 21–27. (In Russ.)
6. Borisov F. I., Morin A. S., Drozdova N. A., Borisov D. F. [Ventilation complex with two-channel pneumatic air
conduit for opencast mining]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions.
Mining Journal, 2016, no. 2, pp. 27–38. (In Russ.)
7. Morin A. S., Brovina T. A., Borisov F. I., Demchenko I. I. Sposob preduprezhdeniia i podavleniia pylegazovykh
vybrosov v kar'ere [The method of gas and dust outburst prevention in an open pit]. Patent RF, no. 2572100 E21F 5/04,
2015.
8. Morin A. S., Borisov F. I., Brovina T. A. Sposob regulirovaniia rezhima raboty kar'ernoi vodootlivnoi ustanovki
[The method of monitor control over open pit water drainage facilities]. Patent RF, no. 2580329 E02D 19/10, 2016.
9. Grishko A. P., Sheloganov V. I. Statsionarnye mashiny i ustanovki [Fixed machines and installations]. Moscow,
MSMU Publ., 2004. 328 p.
10. Geier V. G., Dulin V. S., Borumenskii A. G. and others. Gidravlika i gidroprivod [Hydraulics and hydraulic drive].
Moscow, Nedra Publ., 1981. 295 p.
11. Koshkarov V. E., Valiev N. G. [Experience and further use of emulsified bitum in automobile roads construction and
exploitation]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining
Journal, 2011, no. 5, pp. 13–20. (In Russ.)

Krapivina I. 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.
On the basis of explosives energy use, rock characteristics and blasting conditions under the fulfillment of constructive
mine workings (driving trenches up to 5 m depth and bottom width up to 3 m), zones of intensive drilling are determined
as well as optimal parameters of drilling and blasting with downhole charges of reference and related diameter in various
groups of hard rock and frozen ground. The article examines variants of trenches in various combinations of rock, frozen
and thawed ground. Economic estimation is given to miniaturization of blasted rocks and frozen ground, and reduction of
expenses for explosives. Calculations are made of labour intensity for 100 m of trench over the bulk of the exploded rock
mass and explosives consumption for different variants of explosives arrangement in a trench. Conclusions are made
about rational technology of driving trenches in hard rocks.
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Key words: drilling and blasting operations; hard rocks and grounds; drilling and blasting parameters; constructive mine
workings; trenches; labour intensity; methods of trenches driving.

REFERENCES
1. Krapivina I. S. [Methodical substantiation of the choice of efficient rational parameters of drilling and blasting
operations under the fulfillment of constructive mine workings]. Ural'skaia gornaia shkola – regionam: mater.
mezhdunar. nauch.-prakt. konf. [Proc. of the Int. Research-to-Pract. Conf. “From the Urals mining school – to the
regions”]. Ekaterinburg, 2016, pp. 594–595. (In Russ.)
2. Krapivina I. S., Bersenev G. P. [Methods of choosing efficient parameters of drilling and blasting operations under
the fulfillment of constructive mine workings]. Tekhnologiia i bezopasnost' vzryvnykh rabot: mater. nauch.-tekhn. konf.
[Proc. of Sci.-Techn. Conf. “Technology and safety of blasting operations”]. Ekaterinburg, 2016, pp. 66–73. (In Russ.)
3. Krapivina I. S. [Method of determining rational parameters of blasting during trеnch works]. Izvestiya vysshikh
uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining Journal, 2015, no. 1, pp. 102–108.
(In Russ.)