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ISSN 0536-1028 (Print)              ISSN 2686-9853 (Online)  

THE USE OF MINING EQUIPMENT PERFORMANCE ESTIMATION METHODS AT THE MINING ENTERPRISE


Andreeva L. I. – Chelyabinsk Branch of IM UB RAS, Chelyabinsk, the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
It has been shown that the practicability of mining equipment performance estimation at Russian mining enterprises
nowadays is conditioned by the increase of the park of outmoded and physically outdated machines and equipment.
The use of the methods of engineering diagnostics of mining machines allows obtaining and processing information about
the condition of units and aggregates of every piece of equipment. The availability of such information allows setting
optimal interrepair time or forecast remaining life time of units and details, swiftly determine maintenance requirements of
mining machines and equipment, check maintenance quality and control the performance of the park of mining machines
at the enterprise. The most preferable method of mining equipment performance control is the method of vibrodiagnostics.
The use of the method of vibrodiagnostics to determine actual performance of mining machines allows increasing the life
time of equipment operation by means of including operations of removal and disassembly.
Key words: expert inspection; performance monitoring; technical diagnostics; technical life time; nondestructive testing
methods; defect; vibrodiagnostics; vibrational loading; harmonics.
REFERENCES
1. Andreeva L. I., Brailo D. P., Gitner S. N., Lunev S. N. [Economics of maintenance production]. Ugol' – Coal, 2016,
no. 1, pp. 45–46. (In Russ.)
2. Glebov A. V., Repin P. A. [The estimation of application efficiency of power shovels and hydraulic excavating
machines in conditions of Kuzbas]. Gornoe oborudovanie i elektrotekhnika – Mining Equipment and Electric
Engineering, 2013, no. 6, pp. 20–22. (In Russ.)
3. Andreeva L. I. [The possibilities of improving the efficiency of the resources use in maintenance production].
Problemy nedropol'zovaniia – The Problems of Subsoil Use, 2015, issue 1(4), pp. 134–141. (In Russ.)
4. Ivanov S. L., Zvonarev I. E., Shishliannikov D. I., Burak A. Ia., Nikolaev V. M. [Estimation of remaining life time of
coarse-grained gear wheels of mining excavating machines]. Gornoe oborudovanie i elektrotekhnika – Mining
Equipment and Electric Engineering, 2013, no. 11, pp. 28–33. (In Russ.)
5. Shibanov D. A., Shishliannikov D. I., Ivanova P. V., Ivanov S. L. [Complex estimation of factors, which determine
the operating time of EKG excavating machines of a new product line of “IZ-KARTEKS” production]. Gornoe
oborudovanie i elektrotekhnika – Mining Equipment and Electric Engineering, 2015, no. 118, pp. 3–9. (In Russ.)
6. Koziaruk A. E., Zhukovskii Iu. L. [The system of maintenance for vehicles and machinery electromechanical
equipment by the actual condition]. Gornoe oborudovanie i elektrotekhnika – Mining Equipment and Electric
Engineering, 2014, no. 10(107), pp. 8–14. (In Russ.)
ISSN 0536-1028 «Известия вузов. Горный журнал», № 4, 2017 85
7. Andreeva L. I. Metodologiia formirovaniia tekhnicheskogo servisa gornotransportnogo oborudovaniia na
ugledobyvaiushchem predpriiatii: dis. d-ra. tekhn. nauk [Methodology of forming engineering service of miningtransport equipment at coal producers. Dr. eng. sci. diss.]. Ekaterinburg, 2004. 297 p.
8. Monsini K. R. [Mining machines maintenance concept]. Gornyi zhurnal – Mining Journal, 1998, no. 11/12,
pp. 66–70. (In Russ.)
9. Benbouzid M. E. N., Vieira M., Theys C. Induction motor`s faults detection and localization using stator current
advanced signal processing techniques. IEEE Transaction on Power Electronics, 1999, vol. 14, no. 1, pp. 14–22.
10. Schoen R. R., Lin B. K., Habetter F. G., Shlog H. J., Farag S. An unsupervised on-line system for induction motor
faulth detection using stator current monitoring. IEEE-IAS Transaction, 1995, vol. 31, no. 6, pp. 1280–1286.
11. Bol'shunova O. M. [Diagnostics of mining machines asynchronous motors performance]. Gornoe oborudovanie
i elektrotekhnika – Mining Equipment and Electric Engineering, 2016, no. 1(119), pp. 35–37. (In Russ.)
12. Khoreshok A. A., Bogomolov I. D., Buiankin P. V., Vorob'ev A. V. [The estimation of operational loads on the rotarysupport of power shovels]. Gornoe oborudovanie i elektrotekhnika – Mining Equipment and Electric Engineering,
2014, no. 6(103), pp. 43–46. (In Russ.)

DETERMINATION OF OPTIMAL PARAMETERS OF RETAINING WALL UNDER BULK EXPLOSIONS AT OPEN PITS


Zairov Sh. Sh., Normatova M. Zh., Ravshanova M. Kh. – Navoiy State Mining Institute, Navoiy, the Republic
of Uzbekistan. Е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Recommendations are worked out over the use of rational parameters of blasting in restrained medium under the use of
emulsion explosives in production. The use of the developed parameters of breakdown and retaining wall helped to
provide the security of rock massif geological structure, increase the coefficient of efficiency for explosives, reduce
preliminary-recovery operations when blasting at a bench, and increase security and capacity of loading – hauling
equipment. Under significant thickness of deposit, the method of discrete blasting of ore and enclosing rock with natural
“screening” is advisable, which consists in the use of advantageous structural-geological and mining-engineering factors
as natural borders of blasting. In order to calculate the width and the height of blasted rock breakdown under downhole
charges explosion with the use of emulsion explosives the formulae are worked out, which include the main parameters,
which determine energetic characteristics of explosives and physical-mechanical properties of rocks.
Key words: drilling and blasting operations; blasting in restrained medium; safety of rock massif geological structure;
retaining wall height; retaining wall width; discrete blasting of ore; structural-geological factors; mining-engineering
factors; emulsion explosives.
REFERENCES
1. Bibik I. P., Rubtsov S. K., Sytenkov D. V. Upravlenie vzryvnoi podgotovkoi porod v tekhnologicheskikh potokakh
kar'erov [Control over blasting preparation of rocks in open pit workflows]. Tashkent, Fan Publ., 2008. 399 p.
2. Norov Iu. D., Zairov Sh. Sh. Metodika opredeleniia optimal'nykh parametrov podpornoi stenki pri vzryve s uchetom
energii zariada emul'sionnykh vzryvchatykh veshchestv [Method of determining optimal parameters of retaining wall
when blasting with the account of emulsion explosives charge energy]. Navoiy, NSMI Publ., 2015. 33 p.
3. Norov Iu. D., Zairov Sh. Sh. [Control over the breakdown of rocks with the account of emulsion explosives charge
energy]. Gornyi vestnik Uzbekistana – Mining News of Uzbekistan, 2015, no. 4, pp. 23–29. (In Russ.)
4. Norov Iu. D., Zairov Sh. Sh., Khaidarov O. B., Rustamov O. I. [Control over the breakdown of rocks with the account
of emulsion explosives charge energy]. Gornyi vestnik Uzbekistana – Mining News of Uzbekistan, 2016, no. 1,
pp. 16–19. (In Russ.)
5. Zairov Sh. Sh., Ravshanova M. Kh., Khaidarov O. B., Rustamov O. I. [Determination of efficient parameters of
blasting in “restrained medium” with the account of emulsion explosives charge energy parameters]. Gornyi vestnik
Uzbekistana – Mining News of Uzbekistan, 2016, no. 2, pp. 12–16. (In Russ.)
6. Zairov Sh. Sh., Tursunova I. N. [Dust suppression efficiency increase and explosives energy coefficient of efficiency
increase under bulk explosions in open pits]. Gornyi vestnik Uzbekistana – Mining News of Uzbekistan, 2015, no. 4,
pp. 31–34. (In Russ.)
7. Zairov Sh. Sh. [Development of the method of reducing gas and dust emission under bulk explosions in open pits].
Vzryvnoe delo – Blasting Work, 2015, no. 114/71, pp. 202–210. (In Russ.)

GENERATION OF “GAS POCKET” IN THE ZONE OF BEARING PRESSURE OF COAL MASSIF IN FRONT OF THE FACE OF STOPE


Dyrdin V. V., Fofanov A. A., Smirnov V. G., Diagileva A. V. – Kuzbass State Technical University, Kemerovo,
the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Deformations of the main roof near the face of stope are examined with the account of torque, which develops because of a piece
of the main roof hanging over the mined-out area and affecting the marginal zone of the coal bed and enclosing rocks. The shape
of curvature of the piece of the main roof hanging over the mined-out area is calculated, together with the profile of the main roof
deformation in the marginal zone of the coal bed in front of the face of stope. It is shown that in front of the zone of stresses
concentration there may appear the zone, where the shifts of the main roof are directed upward, i.e. they are opposite to the shifts
of the hanging end of the main roof, which is determined by the torque of forces. There appears the zone of unloading, where
together with the other factors, such as gas content and local disturbance of a coal bed, the generation of “gas pocket” is
possible – the zone with increased possibility of hazardous gas-dynamic phenomena development. The present estimations
allow detecting the location of the given area, as well as the size of the additional unloading within it.
Key words: methane of coal beds; difficult-to-control roof; modeling; elastic deformations; gas-dynamic phenomena; gas
content; marginal zone.
REFERENCES
1. Glushikhin F. P. Trudnoupravliaemye krovli v ochistnykh zaboiakh [Difficult-to-control roofs in stopes]. Moscow,
Nedra Publ., 1974. 192 p.
2. Balashova T. A. Issledovanie vliianiia dinamicheskikh nagruzok na intensifikatsiiu desorbtsii metana: avtoref.
dis. … kand. tekhn. nauk [Investigation of the influence of dynamic loads on the intensification of methane desorption.
Cand. eng. sci. … abs. of diss.]. Kemerovo, 1998. 22 p.
3. Dyrdin V. V., Smirnov V. G., Fofanov A. A. [The influence of torque of the main roof hanging piece on the marginal
zone of the coal bed]. Prirodnye i intellektual'nye resursy Sibiri: mater. XVI Mezhdun. nauch.-prakt. konf. [Proc. 16th
Int. Research-to-Pract. Conf. “Natural and intellectual resources of the Siberia”]. Kemerovo, 2016.
4. Landau L. D., Lifshits E. M. Teoriia uprugosti [Elasticity theory]. Moscow, Nauka Publ., 1965. 204 p.
5. Glushikhin F. P., Kuznetsov G. N., Shkliarskii M. F., and others. Modelirovanie v geomekhanike [Modeling in
geomechanics]. Moscow, Nedra Publ., 1991. 240 p.
6. Fofanov A. A., Dyrdin V. V. [Regarding the problem of the main roof rock oscillation frequency under secondary roof
cavings]. Vestnik KuzGTU – The News of Kuzbass State Technical University, 2012, no. 3, pp. 9–12. (In Russ.)

DETERMINATION OF EFFICIENT PARAMETERS OF DOUBLE-CONTIGUOUS DOWNHOLE CHARGES WHEN FIRING BULK EXPLOSIONS АТ HIGH BENCHES

Nasirov U. F. - Tas hken t Stat e Technical University, Tashkent, the RepuЬ\ic ofUzbekistan. 
E-mail: unasirov@yande x.ru Тukhtashev А. В. - Navoiy State Mining lnst itute, Navo iy, the
RepuЬ\ic of Uzbekistan. E-mail: a.tukhtashev79 @mail.ru Ochilov Sh. А. - Tashkent State Technical
University, Tashkent , the RepuЬ\ic ofUzbekistan. E-mail: o.s hu This email address is being protected from spambots. You need JavaScript enabled to view it. Ravshanova М.
Кh. - Navoiy State Mining lnstitute, Navoiy, the RepuЬ\ic of Uzbekistan. E-mai l:
This email address is being protected from spambots. You need JavaScript enabled to view it.

The article examines the ways of controlling the degree of rock crushing and the destinations,
which allow influencing mechanical effect of rock massif crushing. Kinetic energy has been
determined, which accumulates under the percussive shifl within the volume unit of rock and is
consumed оп the work of breaking. Effective radius of cylindrical and spherical charges at high
benches has been determined. Theoretical investigations determined, that the size of the largest
lump of exploded rock mass under the explosion of douЫe-contiguous downhole charges of explosive а!
high benches is directly proportional to the line of least resistance, symmetry coefficients of
cylindrical charges, and energetic characteristics of explosives; and it is inversely proportional
to the density of loading, charge density, and the circle diameter of douЫe­ contiguous explosive
charges.

Кеу words: drilling and Ыasting operations; high bench; methods of Ыasti ng; douЫe-contiguous
downhole charges; degree of crushing; effective radius; spherical charge; cylindrical charge; line
of least resistanc;edensity of loading; charge density; charge diameter.

REFERENCES

1. Norov lu. D., Nasirov U. F., B ibik 1. Р., Norov Zh. А., Normatova М. Zh.
[Blasting operation s in complex hydrogeological condi tio ns]. Gornyi zhurnal - Mining
Journal, 2013, по. 8, рр. 30- 31. (Tn Russ.)

2. Norov lu. D., Shemetov Р. А., Zairov Sh. Sh., Tukhtashev А. В. Sovershenstvovanie metodov
upravleniia droЫeniem gornykh porod vzryvom: monografiia [Monograph "T he development of the
methods of controlling rock crushing Ьу means ofЬ\ast"]. Bukhara, Bukhoro РuЫ., 2011. 200 р.

3. Shemetov Р. А., Nasirov U. F., Ochilov Sh. А. [Analysis of the technologi cal sc heme of
development of mining in " Muruntau" орел pit]. l zvestiya vysshikh uchebnykh zavedenii.
Gornyi zhurnal - News of the Higher ln stitutions. MiningJournal, 2015, по. 1 , рр. 23- 27.
(Tn Russ.)

4. Bibik 1. Р., Uma rov F. la., Ochilov Sh. А. [Resource-saving technolog ies of rock Ыasting
crushing with downhole charges in deep орел pits]. Sb. nauch. st. mezhdunar. nauch.-prakt.
konf. «Jnnovatsiia-2014» [Proc. of Tnt. Sci. and Pract. Conf. "lnnovat ions- 2014"]. Tashkent,
2014, рр. 22- 24. (ln Russ.)

5. Umarov F. Та. Tekhnologicheskie resheniia resursosberegaiushchego osvoeniia
mestorozhdenii: monografiia

[Monograph "Technological solutions of resource-saving exploitation of deposits"]. Bukhara, Bukhoro
РuЫ., 2016. 381 р.

6. Umarov F. Та. [Effects offactors affecting the stabili ty ofthe edges of pits]. fzvestiya
vysshikh uchebnykh zavedenii. Gornyi zhurnal - News ofthe Higher lnstitutions. Mining Journal,
2014, no. 1, рр. 85- 92. (ln Russ.)

7. Nasirov U. F., Umarov F. Та. [ Calculation of contiguous downhole charges under preli
minary fissure generation of deep open pit slopes]. Gornyi vestnik Uzbekistana - Mining
Bulletin of Uzbekistan , 2016, по. 2, рр. 16- 20. (l n Russ.)

8. Nasirov U. F. [Development of gas ЬuЬЬ\е in artificially sunken l ine ar pin-point Ыasting ch
arge under the gener ation of elonga ted holes]. Gornyi informatsionno-analiticheskii
blulleten' (nauchno-tekhniches kii zhurnal) - Mining lnformational and Analytical Bulletin
(scientific and technical journal), 2010, по. 6, рр. 50-52. (Tn Russ.)

 

ESTIMATION OF GEOTECHNICAL RISKS WHEN DESIGNING ANCHOR SUPPORT OF A FOUNDATION DITCH

Vikulov V. M., Kornilkov M. V., Polovov B. D. – 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.
Imitation modeling program algorithm is in the basis of foundation ditch fencing wall anchor support construction
calculation; the program fulfi lls quantitative estimation of reliability and risk of underground facilities construction.
The main estimation method is simulation testing according to Monte Carlo method, which is realized in the mode of automated
application program and test fi les in QBasic programming language. On this basis, machine oriented procedure of fl exible
retaining constructions design has been worked out, which helps to make effi cient probability analysis of loads upon the
bearing construction, sliding surface locations and anchor supporting nodes stability. Risk degree determination when
designing stable fl exible retaining constructions of foundation ditches for urban underground constructions which are built
with opencast mining method is extremely topical issue. Evident way of the said problem solution is formalization of riskanalysis, which includes the development of geotechnical situation modeling method by average values of input data.
Key words: anchor support; ascending anchor; simulation test; model; sliding line; risk degree; soil pressure.
40 «Известия вузов. Горный журнал», № 4, 2017 ISSN 0536-1028
REFERENCES
1. Polovov B. D., Kornilkov M. V., Poddubnyi V. V. Obosnovanie inzhenernykh reshenii po effektivnomu osvoeniiu
podzemnogo prostranstva krupneishikh i krupnykh gorodov: nauch. monografiia [Substantiation of engineering solution
over underground space efficient development in large cities and metropolises: sci. monograph]. Ekaterinburg,
UrSMU Publ., 2008. 377 p.
2. Polovov B. D., Valiev N. G., Kokarev K. V. [Geomechanical analysis of mining units on basis of nonparametric
statistics methods]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining
Journal, 2016, no. 1, pp. 66–74. (In Russ.)
3. Vikulov V. M., Kornilkov M. V., Zoteev O. V. [Foundation pit anchor support design efficiency improvement under
the construction of subsoil constructions]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher
Institutions. Mining Journal, 2017, no. 1, pp. 62–70. (In Russ.)

  1. PSYCHOLOGICAL STABILITY AND LABOUR PROTECTION
  2. SCIENTIFIC FUNDAMENTALS OF SUSTAINABLE LAND USE IN INDUSTRIAL REGIONS
  3. THE INFLUENCE OF UNDERGROUND MINING SYSTEM CLASS ON THE ROCK-BUMP HAZARD OF MINING WORKS
  4. LARGE DEPOSITS DEVELOPMENT WITH INCLINED DESCENTS

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