"Explosion technology"— scientific and technical journal

Application of the virtual experiment in the mining practice

Keywords: virtual experiment, explosion, blasting method, structure of charges, blasting, combined geotechnology, rock mass, open pit mining, mine workings.

The article describes a new approach that extends the area of modern virtual simulation for the first time extending it to solve real production problems of combating the negative impact of blasting with the use of large scale arrays of explosive destruction of rocks on coal mine located in the mine below the mine workings. It is shown that the acceptability of the use of the above analytical apparatus and methods of numerical modeling of gas-dynamic flow and its interaction with solid barrier in the mechanism of action of the explosion on the rocks. Experimental explosions in industrial conditions confirmed the effectiveness of the new design of downhole charge on the basic parameters of spatial shock wave interaction with the permeable barrier and blast wave as it passes through the pre-devastated area in the rocks in the explosion of blasthole charges.

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2. Viktorov S.D. Zakalinskij V.M. Osokin A.A. 'Effektivnaja vzryvnaja podgotovka pri osvoenii plastovyh mestorozhdenij Vestnik Rossijskoj akademii nauk. 2015. – 2. Tom 85. p. 39 45.
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9. Glazov E.G., Kochetkov A.V., Turygin I.A. Numerical modeling of spatial shock wave interaction with permeable barrier // Bulletin of the Nizhny Novgorod University. NI Lobachevsky, 2014, N 1 (1), p.180 – 185.
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The breakdown of rocks by explosion of natural separateness

Keywords: technological fragmentation, camouflage phase, wave phase, quasistatic phase, cavity, energy, energy of destruction, fracture energy density.

The article describes the main provisions of the multi-phase and multi-zone theory of technological crushing of rocks by blasting hole charges of industrial explosives. We describe the phases of the process: kamufletnaya, wave, quasi-static. Analytical dependences for calculation of the parameters of these phases of the process. Analytical dependences for calculation of the parameters of these phases of the process. Set out the principles determine the parameters joint action phase. Set out and described the presence of local areas within phase zones and given their analytical description Using designed computer programs calculated gransostav crushed rock in phases, areas and slugger volume rocks.

1. Viktorov S.D., Kazakov N.N., Shlyapin A.V.,Lapikov I.N. Power the zone camouflet at explosion the charge chink In cfreer. A collection of "blasting". 2012. N 108/65. pp. 8-15.
2. Viktorov S.D., Kazakov N.N., Shlyapin A.V.,Lapikov I.N. Geometrical parameters the zone camouflet at explosion the charge chink In cfreer. A collection of "blasting". 2012. N 108/65. pp. 73-80.
3. Kazakov N.N. Parameters of prjces jf camouflage action jf explosion jf a blasthole charge jf final length. Mining information and analytical bulletion. Separate release No.1. Voscow.World jf the mining book, 2013, pp. 109-119.
4. Viktorov S.D., Kazakov N.N., Shlyapin A.V., Lapikov I.N. Camouflet Blasting of a Finite-Length Borehole Charge. Proceedings of the 8th Internftional cjnference on physical problems of rock destruction.- Beijing, China: Metallurgical Industry Press, 2014, – 28-31.
5. Kazakov N.N., Shlyapin A.V. The breakdown jf rocks by explosion jf natural separateness. A collection of "blasting". 2015. N 114/71. pp. 97-102.
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The study of the process of departure stemming in the blast hole charges with regard to its destruction

Keywords: tamping, drilling, diameter, explosion, friction, movement

The study of departure stemming from the well when the explosion of the explosive charge the destruction of decay and of the tamping, which is in the process of departure outside square us. The resulting ratio, taking into account simultaneously spraying tamping (the motion of a body with variable mass), the change of the area of contact with the walls of the well and expansion of the explosion products in the process of departure to more accurately reflect the physical phenomena that determine the formation of the pressure pulse. Held-tion the results of the study allow to conclude about the decisive influence of the friction forces and of borehole diameter on the duration of the explosive impact on the rock mass and, accordingly, the magnitude of the pressure pulse to the borehole wall.

1. Drukovanyj M.F., Kuc V.S., Il'in V.I. Upravlenie dejstviem vzryva skvazhinnyh zaryadov na kar'erah (Managing the effects of the explosion of borehole charges in quarries). M., Nedra, 1980. 223 s.
2. Dugarcyrenov A.V. Uchet sil treniya pri dvizhenii zabojki v skvazhine (Тhe Account of forces of friction when moving the tamping in the well). // Vzryvnoe delo = Еxplosive Texnology. – 2016. – N 116/73.

The result of the expansion of the explosive cavity on stress state of the firm environment

Keywords: charge, pressure, deformation, cavity, border, solid environment

The answer to the Lama about the stress state of a solid medium under the influence of gases on spherical and cylindrical cavities are obtained for a constant pressure in the cavity. Due to the displacement of the boundaries (walls) of the cavity and increase its volume, the equilibrium pressure is much lower. In the present work to estimate the impact of this displacement and a corresponding reduction in gas pressure on the magnitude of strains in the environment.

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Estimation of interaction borehole charges at different delay time between them

Keywords: tnumerical simulation, rock failure, short-delay blasting, blast, explosive, detonation, degree of fragmentation, equation of state, strength and failure models

By using Ansys Autodyn software the estimation of pressure field, stress field, crack propagation and degree of fragmentation at blasting two chargeswith different delay time between them has been produced. Shown that in conditions considered the best blast parameters are provided at delay time between borehole charges equal 15 ms.

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The influence of inhomogeneities of rocks on the parameters of blasting

Keywords: complex arrays, georadar, gradient strength properties of rocks, blasting parameters, results of explosions

A method for optimization blasting parameters taking into account the physical and technical properties of rocks within the explosive unit, in order to improve the quality of the explosion in the quarries with complex geological structure. The results of laboratory experiments, confirming the improvement in the quality of crushing rock samples blast charges with variable decelerations and location depending on the strength properties of the samples relative to the explosions of charges with the same parameters. The proposed method can be used in conjunction with an array of radiographic GPR.

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Evaluation of the efficiency of energy use in crushing of rocks

Keywords: blast, rock, shock, energy, blasting works, crushing of rocks, explosivity of rocks, extent of crushing.

In article the analysis of methods of calculation of the project specific consumption of explosives is made for blasting in the mining industry. It is offered to define explosivity of the massif of rocks in laboratory on samples of rocks based on the study of structural features of the massif and the scale factor. For this purpose the method of estimating the specific energy expended in the crushing of rocks during impact is developed.
For limestones (f=8) dependence of extent of crushing on specific energy consumption is established and its optimum size providing the maximum utilization rate of energy on crushing is determined. It is shown that if the energy is excessive for a particular breed, the efficiency of crushing is reduced significantly and increase the expenses of energy to useless forms of mechanical work.
The conclusion is drawn that for each rock there is an optimum specific energy consumption providing the maximum utilization rate of energy on crushing. The formula for determination of a reference specific consumption of explosives depending on optimum energy consumption is given.

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Peculiarities of mongolia climatic conditions influence to the ammonium nitrate explosives usage

Keywords: ammonium nitrate, a granule, explosives, the critical diameter, absorbing ability, a detonation

Formation and current state of mining industry of Mongolia are in close interrelation with history of development of the country, features of a geographical arrangement, climate, and also an equipment level of development in world practice. Mongolia is located in a middle part of the Asian continent on considerable removal from the seas. Average height of an arrangement of the territory of the country concerning level of the ocean makes more than 1000 m. The climate of Mongolia is sharply continental with essential fluctuations of temperature on seasons of year
Durability of crystals and granules of the ammonium nitrate (AN) depends on a way of their receiving at production and numbers of modification transformations to which they can be subjected in the course of product storage. At repeated modification transformations, in particular, upon transition through a temperature point 32,2оС that is possible in real conditions of Mongolia and are characterized by big change of volume of crystals, granules the ammonium nitrate crack. With cracking of granules their absorbing ability in relation to oil products increases, but durability decreases.
At long storage the ammonium nitrate occurs more essential change of a caking, integrity of granules, compatibility with fuel, flowability, etc. At destruction of granules the ammonium nitrate as a result of long storage the increase in holding ability the ammonium nitratein relation to DT to level, sufficient for mixes ASDT is possible, however thus there is a sharp deterioration of operational properties, in particular, flowability. Thus change the ammonium nitrate, being stored, as a rule, in compact stacks, not evenly and not unambiguously on the stack volume that leads to fluctuations of properties of made mixes ASDT uncertain and not giving in to regulation.

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2. Starshinov A.V, Zhamyan Zh., Bogdanov M.N. Fadeyev V.Yu. "Improvement of properties of mixes ASDT by processing methods and special additives", In сб.: Explosive business – 99 M. Prod. MGGU, 1999 of p. 89-95.
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The influence of blasting and various types of explosives on the spontaneous combustion of coal mass

Keywords: coal, ammonium nitrate, a granule, explosives, explosibility, flowability, the inflammability absorbing ability, a detonation

In actual practice conducting explosive works the structure of products of explosion becomes various and strongly differs from ideal conditions of explosion. Detonation products chemically more active, in comparison with air oxygen, can enter interaction with breed, in particular, with the coal, being in the activated state, with increase in probability of ignition of coal. To similar result leads also existence as a part of products of explosion of products not full oxidation of combustible additives or trinitrotoluene which as possess the increased chemical activity.
Results of supervision and researches during various periods of working off of coal fields of Mongolia, show that the most active place for emergence of seats of fire – the blown-up masses in blocks of a coal ledge with BVR application. In actual practice it is shown that when loosening breeds by explosion reduction of time of the incubatory period of coal masses before ignition, in comparison with that is observed, when developing a coalfield without use of drilling-and-blasting works.
Ignitions and fires on objects of production and processing of coal lead to essential increase of danger of mining operations and negative impact on environment. Tendency of coal to self-ignition depends on size and activity of his adsorbing surface which is caused by primary factors of genesis: composition of plant material, initial conditions of accumulation and decomposition of maternal substance and character of a metamorphism.
Transition on coal mines of Mongolia on use of the explosives granulated the grubodispersnykh has led to creation to the system debalanced on oxygen balance and allocation at explosion of a large amount of oxides of nitrogen. Broad use of ASDT mixes in 2005-2015, has led to mass cases of self-ignition of coal and technogenic fires with the increased danger of working off of coal fields.
The researches conducted by authors, have allowed to create for conditions of Mongolia special manufacturing techniques and applications ammoniac селитренных VV which have the balanced structure and at explosion allocate the minimum quantity of the poisonous products causing accelerated self-ignition of coal
Application of the developed manufacturing techniques of mixes ASDT practically excludes self-ignition of coals after explosion that significantly increases efficiency and safety of coal mining on cuts of Mongolia.

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Emulsion explosives for mining of sulfide-bearing rocks

Keywords: drilling and blasting, straight cut, parameters of blast holes, review, charge, blast

Considered prescription components of the emulsion explosives with regard to their use in sulfide-bearing rocks. Proposed measures to improve the conditions of their application

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The method of controlling the energy of the explosive destruction of rock massifs in conditions of mining of the asbestos deposits

Keywords: method, energy of explosion, rock massif, emulsion explosives, formulation, inhibitors, equipment, experiment, rate of detonation, asbestos deposits, mining conditions

The proposed method of controlling the energy of the explosive destruction of rock massifs of rocks in the specific conditions of mining the asbestos deposits represented a particularly hard blow peridotites, by introducing into the matrix of emulsion explosive substances inhibiting Supplement of NaCl. Experimentally using modern equipment at the testing ground have been made the measurements and have been evaluated the detonation characteristics, made in the laboratory of explosives by the specified formulation.

1. Melnikov N.V. The energy of the explosion and charge design / N.V. Melnikov, L.N. Marchenko./ M. 1964. – p.146.
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3. Viktorov S.D. Destruction of rocks contiguous charges. / Viktorov S. D., Galchenko, Yu. P., Zakalinsky V. M., Rubtsov, S. K. / M. 2006. – p. 276.
4. Mosinets V.N. Crushing and seismic action of explosion in rocks. / V. N. Mosinets / M. Nedra, 1976. – p. 271.
5. Kutuzov B.N. The destruction of rocks by explosion / B. N. Kutuzov. – 3d Izd., revised and enlarged. M. Izdatelstvo MMI, 1992. – p. 516.
6. Kolganov E.V. Commercial emulsion explosives / E. V. Kolganov, V. A. Sosnin. 1st book (Compositions and properties) – Dzerzhinsk, Nizhny Novgorod region, izdatelstvo GosNII "Kristall", 2009. – p. 582.

Propagation characteristics of detonation wave in EE

Keywords: absolute stability of detonation, detonation neutral stability boundary density

The article presents the author's amendments to the detonation model described in [1, 2], which allows to calculate the overdriven detonation regimes. The influence of structure, density and chemical composition of emulsion explosives on the "line boundary density" on the coordinate plane {pore sizes; densities}. Shows the importance of controlling the size of the gas pores to enhance the stability of the detonation, and accordingly, safety of explosive works with the use of a loading of emulsion explosives sensitized by gas pores. Work is useful in the design and manufacture of explosive works with the use of emulsion explosives sensitized by gas pores.

1. Gorinov S.A. A Physico-mathematical model of detonation of emulsion explosives sensitized by gas pores. Stationary regime // Proceedings of XV International scientific-practical conference on explosives. 6-12 сентября 2015 Yalta, Respublikachi, Russia, pp. 33-45.
2. Gorinov S.A. Physical and technical evaluation of possibility of using low density explosives in smooth blasting / Gorinov SA, Maslov IY // 11th International Symposium on Rock Fragmentation by Blasting. 24-26 August 2015. Sydney, Australia: Published by AIMM, 2015, pp.555-564.
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5. Gorinov S.A. The Stability of the borehole charge of detonation of emulsion explosives sensitized by gas pores // Mining magazine of Kazakhstan, 2014, No. 1, pp. 24-27.
6. Konyukhov A.V. Numerical investigation of the instability of shock waves in thermodynamically non-ideal environments / Konyukhov A.V., Likhachev A. P., Oparin, A. M. and others// Journal of experimental and theoretical physics, 2004, vol 125, issue. 4, pp. 927-941.
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8. Kutuzov B.N. Physical-technical bases of creation of emulsion and granular EXPLOSIVES and initiation/ Kutuzov B.N., Gorinov S.A. // Emulsion EXPLOSIVES, and ANFO granulity: structure, initiation, physical and technical bases of creation: Individual articles-mining informational and analytical Bulletin (research journal).  2011, No. 7, pp. 34-52.
9. Gorinov S.A. On instability of detonation waves in an emulsion explosive, sensitized by gas pores/ Gorinov S. A., Kutuzov B.N. // Mountain information-analytical Bulletin, 2012, vol. 4, pp. 302-307.
10. Zhuchenko E.I. Application of emulsion explosives sensitized by the method of gas generation, in deep wells / Zhuchenko E.I., Ioffe V.E., Kukib B.N. etc.// labour Safety in industry, 2002, N 11, pp. 30-32.
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Improving POE through the use of high-energy materials recyclable ammunition

Keywords: high-blasting explosive materials charge, detonator, rock mass, disposal of ammunition

The article presents the generalized material in reducing the unit cost by the explosive preparation of rock mass during the introduction of blasting technology with use of high-energy materials (hem) decommissioned ammunition.

1. Shchukin Y.G., Kutuzov B.N., Maceevich B.V. Tatishchev Y.A. Promyshlennye vzryvchatye veshchestva na osnove utilizirovannyh boepripasov. M.: Nedra, 1998. – 319 s.
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Method of concealed informative marking of industrial explosives

Keywords: industrial explosives, informative labeling, secretive chemical marking, the marker substance, IDs, spectrophotometry, informative block

A review is given of the known methods of concealed marking of explosives. A new method is described for concealed informative marking of industrial explosives by adding special agents (markers, which can be detected by special analysis methods in the explosive itself or its residues at the blasting site). Information content of marking is achieved by means of information encoding with the use of combinatory codes, which is determined by the combination of marking agents. The concealed nature of marking is maintained by using the marking agents in super low amounts detectable only by means of special physical-chemical analysis methods. The study contains description of spectrophotometric characteristics of some marking agents and threshold concentrations for their identification by spectrophotometer PE-5400UF. The results are given of reading of the marking introduced into a granulated water-emulsion explosive by the proposed method. A methodology is given for identification of marking agents in samples of marked explosives by spectrophotometric method. It was shown that besides the concealed nature, the proposed method of marking of explosives has manifold opportunities for encryption of the data contained in the marking. At that, it is possible to simultaneously implement numerous known methods for encoding all the textual and digital information that must be specified in the marking.

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Providing the increased explosive efficiency of the mixed heterogeneous systems by reducing the effects of caking and redistribution of components with time adjustment

Keywords: ammonium nitrate, mixed explosives, sensitivity to explosive pulse, physical stability, caking, substances-disintegrants

The article introduces the analysis of characteristics of mixed explosives based on ammonium nitrate in a solid and powder state allocating the phenomena of redistribution of the components and caking of solid mixture particles that correspond to the general definition of "insufficient physical stability" and lead to deterioration of explosive performance. The author provides description of the rapid method of caking assessment. The article shows results of experimental studies to reduce caking by using various additives-disintegrants and stabilization methods, including heat treatment – porization of AN particles and combining this AN with substances with low melting temperature, in particular, with dinitrotoluene.

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3. Kukib B. N., Lavrov V. R., Shvedov K.K., i dr metod opredeleniya kriticheskogo diametra i kriticheskoj skorosti detonacii promyshlennyh vv v sb metody ispytanij nizkochuvstvitelnyh vv chernogolovka choihf. (A method of determining the critical diameter and critical velocity of detonation of industrial explosives). 1991 s 40-49.
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9. Kuvshinnikov I. M. Mineralnye udobreniya i soli. (Mineral fertilizers and salt). M.: Himiya, 1987, – 256 s.
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Pneumothoraces chamber for the loading of bore-holes and wells are not packaged explosives

Keywords: borehole, well, bulk explosives, chamber pneumatic charger, a reciprocating mechanism, diaphragm mechanism

To simplify the design and improve the reliability and efficiency of the proposed modernization of the chamber of pneumothoracies by replacing the pneumatic cylinders that control the operation of cone valves chamber, through which chamber is filled up with new portion of bulk EXPLOSIVES, the diaphragm mechanism.
This design pneumothoraces maintenance, which ensures reliable, uninterrupted and effective work of pneumothoraces at any time, and blocked the camera after hours prevents ingestion it of foreign objects, which improves not only reliability, but also security of pneumothoraces

1. Kanovich L.I., Merzlyakov V.G. Mining machinery and equipment for underground mining. M.: Izd. Moscow state mining University, 2013. - 408 S. – Fig.6.52, p. 302.
2. Kanovich L.I., Merzlyakov V.G. Mining machinery and equipment for underground mining. M.: Izd. Moscow state mining University, 2013. - 408 S. – Fig.6.53 (b), p. 303.
3. Kanovich L.I., Merzlyakov V.G. Mining machinery and equipment for underground mining. M.: Izd. Moscow state mining University, 2013. - 408 S. – Fig.6.55, p. 306.
4. RF patent 2558550. Pneumatic chamber charger for bulk explosives // Ed. Sergeev VV, Bitarov B. M. Publ. 2015, bull. 22.

Blastng of ore on the contact with backfill in the process of mining of under-pit reserves

Keywords: under-pit reserves, combined mining, blasting in the contact with backfill, backfill mixture,ring holes, blast energy, detonation pressure, drillhole blasting, uncharged interval

The article gives a description of the problem ofmining of under-pitreserves and reserves along the wall of the pitusinga combined way. The authors, on the example of polymetallic deposit Maykain propose to use mining methods with backfill. However, such methods often have a problem with dilution of ore with the backfill material during blasting processes that has a negative effect on processing. Therefore, in this article, the method of ore breaking on contact with the backfill is also reviewed. Furthermore, since the strength of artificial backfill mass may vary depending on the mining sequence breaking parameters must also be different. Accordingly, to improve the quality of breaking and reduce the dilution of ore uncharged portion of the blast holesof the ring in their bottom part and in the collar should be set taking into account the length of the discharge zone

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3. Brady B. H. G. Rock Mechanics: For Underground Mining, Springer Science& Business Media, 2012, P. 528
4. Ping Wanga, Huiqiang Lia, Yan Lib, Bo Cheng Stability analysis of backfilling in subsiding area and optimization of the stoping sequence. Journal of Rock Mechanics and Geotechnical Engineering, Volume 5, Issue 6, December 2013, P. 478–485.
5. BitimbayevM.Z., KrupnikL.A., ShaposhnikY.A. Theory and practice of backfill works in mining of deposits –Mining Journal, Almaty, 2012 No.5, P. 19-25.
6. StateStandard GOST 24452-80: Concrete. Methods of prism strength determination, elastic modulus and Poisson’s ratio, 1980.
7. Ajoy K. Ghose, Akhilesh Joshi Blasting in Mining – New Trends, CRC Press 2012, P. 150

The explosive collapse of monolithicreinforced concrete building

Keywords: the explosive collapse of monolithic reinforced concrete building; blast hole charges; the safety of blasting; shelter locations explosion; seismic vibrations; air shock wave; gas hazardous area; hydroshock wave; dangerous zone for people in the explosions

In the article the issues of preparation and holding of the explosion for the collapse of reinforced concrete monolithic 9-storey building. The length of the building – 190,4 m, a width of 20.4 m and height is 33.9 m. In the Central part of the building located the block of elevators and stairs with a length of 27.4 m and a width of 20.4 m, which was to be saved. The saved block has previously been separated from the collapsing parts of the building. To reduce the width of collapse of the collapsing structures of the building scheme was used short-delay blasting with the formation of two cuts on the 3rd (main incision) and the 1st floors of the building. To ensure the direction of fall of the collapsing structures of the building first row of columns on the direction of the rolls building was blasted to all floors, the second and third rows of longitudinal columns and reinforced concrete diaphragms of hardness – only 1-m, 3-m and 4-m or 5-m floors. The joints of columns and beams, and transverse girders and the transverse diaphragms stiffness blasted on all floors of the building. The width of the pieces after the collapse of the explosion was about 10 m. The method of calculation of safe distances for various harmful effects of the explosion

1. Tekhnicheskie pravila vedenija vsryvnykh rabot na dnevnoy poverkhnosty (Technical rules of blasting on the surface). Moscow: Nedra, 1972. – 240 p.
2. Federalnye normy i pravila v oblasty promyshlennoji besopasnosty. Pravila besopasnosty pri vsryvnykh rabotakh. Sbornik dokumentov. Srija 13. Vypusk 14 (Federal norms and rules in the field of industrial safety. Safety regulations for blasting. Collection of documents. Series 13. Vol.14). Moscow: ZAO "Scientific and technical centre for the study of industrial safety", 2014. – 332 p.
3. Rukovodstvo po proektirovaniju i proisvodstvu vsryvnykh rabot pri rekonstrukcii promyshlennykh predprijatiji i grazhdanskikh sooruzheniji. RTM 36.9-88 (Guidance on the design and manufacture of blasting during the re-construction of industrial enterprises and civil structures. RTM 36.9-88). Moscow: CBNTI MMSS USSR, 1988. – 37 p.
4. Ganopolskiy M.I., Baron V.L., Belin V.A. et al. Metody vedenija vsryvnykh rabot. Specialnye vsryvnye raboty: Uchebnoe posobie (Methods of blasting. Special blasting: Study guide). Moscow: Publisher MGGU, 2007. – 563 p.
5. Opredelenie kriticheskikh parametrov kolebaniji okhranjaemykh objektov pri vsryvnom droblenii fundamentov i obrushenii sdaniji pri rekonstrukcii. RTM 36.22-91 (The determination of the critical parameters of the oscillations of protected objects with explosive crushing foundations and collapse of buildings during reconstruction. RTM 36.22-91). Moscow: CBNTI MMSS USSR, 1991. – 17 p.
6. Ceitlin Ja.I., Smoliy N.I. Sejismicheskie i udarnye vosdushnye volny promyshlennykh vsryvov (Seismic and air shock wave of industrial explosions). Moscow: Nedra, 1981. – 192 p.
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Seismic effect of "Destructor" in the destruction of construction

Keywords: blasting, blast-hole charges, staff BB destructor of seismic wave, seismic effect, TNT equivalent

The paper discusses the issues of conducting blasting in the destruction of building structures using boreholes instead of the standard explosive knock-free composition – "Destructor". In the course of experiments on the destruction of reinforced concrete slab foundation by "Destructor" was held registration of seismic waves. It is shown that the effect of the seismic action "Destructor" is tens times less than that of regular explosives. According to the maximum oscillation speed of seismic waves was estimated TNT equivalent of "destructor", which in concrete destruction was less 0.0032.

1. Kulikov V.I., Dmitriev A.Y., Galushko F.I. Seismic action BSB with electronic initiation system. // Explosive affair. 2015. N 113/70. p.366-383.
2. Kulikov V.I., Akimkin M.S., Ganopolsky M.I. The seismic effectiveness at prozodke mining destructor .// explosive affair. 2016. N 115/72. (in the press).
3. Sadovsky M.A. The seismic effect of explosions. Proceedings of the All-Union Conference on Explosives. Gostoptekhizdat. 1940. p.290-319.
4. Medvedev S.V. Seismic explosions rock. Ed. Bosom. 1964. 188 p.
5. The federal rules and industrial safety regulations. Safety regulations for blasting operations. Ser.13. vyp.14. ed. ZAO STC. 2015. 332 p.
6. Berezuev Y.A. The use of gas generators shpurovyh pressure on block stone quarries. Mining Journal, 2008, N 1, p. 50-52.
7. Selyavina A.I., Nenakhov A.I., Fomenkova V.E., Ganopolsky M.I. The destruction of the monolithic reinforced concrete foundation with non-explosive depleting funds. The explosive case. Number 113 seventieths, 2015. p.243-258.
8. Patent 2010106722/03, 26.02.2010. The device (destructor) for the destruction of solid rock or concrete. 2010.

Features of the explosion of the metal hydride

Keywords: metal hydride, current, generator, the explosion temperature of explosives

The article presents the theoretical assumptions put forward by the author about the possibility of using metal hydrides to create an explosion through their warm-up and applications for this explosive generators of electric current. Given the advantages of the use of the hydride of the metal is obtained by electrolysis, analysis of the process heating coil metal hydride, electric discharge of high power. The use of cylindrical implosions explosion to increase the power and efficiency of the process. Describes the possibility of using explosive devices on the basis of use as initial sources of energy warm up from the explosive generators of electric current and cylindrical implosion explosion to strengthen and stabilize the process "physical" explosion metal hydride having piscivorous oxide film obtained by electroplating. This article does not describe the process of detonation, the way to protect against detonation, the design used explosive generators of electric current.

1. The patent for the invention RF N 2554018.
2. The patent for the invention RF N 2554021.
3. The application for the invention RF N 2014152354.
4. Fortov V.E. Explosive generators of powerful pulses of electric current. Moscow, Nauka, 2002 – p. 399).
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A critical analysis of some provisions federalnych rules and regulations in the field of industrial safety "Safety rules for blasting"

Keywords: industrial safety, norms and rules, technical expert, explosive materials, blasting operations, emergency, casualty

At the end of 2014 in Russia came into force the Federal standards and rules in the field of industrial safety "safety Rules for blasting" (PBBR), which, like the previous rules of Rostechnadzor, according to the author, are not without drawbacks. This article was done with a purpose – to draw the attention of specialists employed in the field of handling explosive materials (VM) on certain provisions PBVR, critically evaluate their usefulness and suitability for their work. Among the identified deficiencies that are not represented by observations on underground blasting, because in spite of the existing practice for the treatment of WM in the underground conditions, the author does not consider himself a specialist, the level of which should correspond to a real expert for underground works, even the lowest category. In this connection, to discuss safety issues in underground conditions in the press, the author urges his colleagues – experienced specialists and experts in the field to submit their comments, maybe it's to save someone's life.

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Analysis of the condition of the roof preparatory of mining workings by means of GPR with the influence of high-speed longwall

Keywords: GPR, roofing, underground workings, safety of mining operations, roof bolting, fracture, geophysical research methods

The substantiation of the need of monitoring the condition of the preparatory mine workings fixed anchoring for the safety of mining operations. The main factors leading to collapse of mine workings and insufficient knowledge of physical processes occurring in the rocks with the influence of high-speed longwall. It is shown that currently used methods of monitoring the roof condition does not give a complete assessment throughout mine workings. It is proposed to use the GPR method for identifying threat areas, prone to deformation and collapse. Provides data mining-geological forecast for lava 6605 mine "Taldinskaya-Zapadnaya – 1", subject to which a schedule of monitoring and determined mining to be examined. Given radargram ventilating drift reflecting the state of the roof taking into account the time factor and the proximity of lava. Analysis of the condition of the roof, and by means of GPR, is confirmed in most cases by visual observation and allows you to make corrections in the passport of attachment and to set the anchor deep-laid.

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9. Belikov A.V. Method of prediction of the zones with weak contacts in the solid rocks of the roof of development workings, fastened teleprimary anchoring. // Mining information-analytical Bulletin. SB. scientific. Tr./ Moscow state mining University, 2008. No. 12 – Pp. 346-350.

On the question of the need for the creation and implementation of the automated monitoring systems and the account of the displacement in the roof coal mines

Keywords: roof, anchoring, frame depth, offset in the roof, measuring, control, automation, monitoring

Fast and quality of mining makes to the sinking and cleaning techniques high demands for reliability, performance, and a number of other criteria. In turn, coal and rock mass require timely surveys and monitoring of his condition. Continuity and high precision control of the state coal-rock mass will help to predict and avoid dangerous consequences caused by sudden collapse of the roof. These factors and growing quantities of sewage treatment works require optimal methods for the diagnosis and monitoring the state of the roof, which have important properties such as high reliability of the results, the convenience and efficiency of execution of works, as well as to minimize the human and economic costs for their implementation, security implementation. The article discusses the relevance and need for the creation and implementation of the automated monitoring systems and the account of the displacement in the top of the coal mines – as one of the main factors ensure the safety of underground mining of bedded deposits of coal in the future.

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