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.)