"Explosion technology"— scientific and technical journal

Geometrical parameters the zone camouflet at explosion the charge chink in career

Keywords: cylindrical, final, camouflet, model, geometrical parameters, a cavity, an operative range, a wave, pressure, mass speed, radiation border, numerical values

In article form models camouflet a charge of final length, the form camouflet cavities and forms of a zone a camouflet of action of explosion are offered. Dependences are resulted and the technique of definition of geometrical parameters a zone camouflet is stated at explosion a chink of a charge of final length in breed.

Analytical generalization of the empirical laws of rock crushing

Keywords: rocks, levels of destruction, tensile strength, work of destruction, laws of crushing

Two cases were considered of changes in the strength of rocks in compression. In the first case the second term of this characteristic is proportional to the size of the piece to the power minus one half, the second is inversely proportional to the size of the piece. In the first case, the work on crushing is calculated as the sum of the works, defined by the laws of Kirpichev, Bond and Rittinger taking together, in the second case - as the sum of works, defined by the law of P.A.Rehbinder with some additional part.

Modern problems of explosive business in the mining industry

Keywords: safety, explosives, explosive materials, blaster, head of explosive works, monitoring, drilling, detonation

Article contains information on a condition of explosive business in Russia. Concrete data on a turn of explosive materials are provided. Solutions of the main problems of explosive business are offered.

Physico-chemical basis of industrial production and application of detonation nanodiamonds

Keywords: detonation synthesis, explosives, synthesis technology and enrichment properties of nanodiamonds, application of nanodiamonds in composite lubricants polishes

In 2012, the 30th anniversary of the establishment of the detonation method yes synthesis nanodiamonds. During this period, developed technology of synthesis and concentration are the automated production and found the sound use of nanodiamonds in science and technology. In 2011 in Moscow at the IV International nanoforume "ROS-NANO" work on the method has been awarded the International Prize «RUSNANOPRIZE-2011" in the field of nanomaterials.

Barodiffusion as the possible uniform mechanism of intermixing of components of mixed reacting structures, high-speed diffusion in ampoules of preservation and the phenomenon superdeep penetration**

Keywords: the condensed continuous media, shock waves, shock adiabatic curves, diffusion, barodiffusion , high-speed deformation of media

Possibility of essentially new uniform explanation of three, at first sight, the diverse phenomena specified in heading of article is discussed. The new explanation is based on that assumption, that in each of these phenomena the substance of an impurity moves through the continuous media not in the form of macroscopical parts, and in the form of atoms and the molecules transferred by shock waves by means of barodiffusion. We believe, that such explanation of three specified phenomena will allow to develop, at last, their theory in which there will be no place to the assumptions contradicting a substantive provision mechanics of continuous medias.

Dependence research between energy consumption and the specific surface increment at destruction of samples of rocks by one shock

Keywords: blast, rock, shock, energy

In article are presented results of laboratory researches on destruction of limestones and dolomites by one shock. Testing of the law of crushing of P.A. Rebindera is made and is revealed considerable decrease in speed of a specific surface increment at increase in energy of one shock. Universal dependence for calculation of power consumption of technological processes at dynamic influences on rock is offered.

Power parameters jf the camouflet zone at the chink of charges explosion in open-cast mines

Keywords: cylindrical, final, сamouflet, model, power parameters, a cavity, an operative range, a wave, pressure, mass speed, radiation border, numerical values

In article models of the form a chink of a charge of final length, the form a camouflet of a cavity and the form of a zone a camouflet of action of explosion are used. Dependences are resulted and the technique of definition of power parameters a zone camouflet is stated at explosion a chink of a charge of final length in breed.

Effective management of drilling and blasting preparation to rock mass excavation

Keywords: charge, design, evaluation, efficiency stone crushing, explosion

Based on experimental data suggested criteria for evaluating the explosion of charges of various designs, including the parameters of statistical processing grain size and its presentation in Rosin-Rammler coordinates, as well as the specific energy consumption and explosives. Ranging of the charges on the effectiveness of their use in rock crushing blast hole charges.

as dynamics processes in blasthole at the directed destruction of rocks

Keywords: the mass explosion, the lengthened charge, products of explosion, speed of a detonation, a wave of pressure, quasistaticy action of explosion, a crack, the directed destruction

Article is devoted to calculation of movement of products of explosion in blasthole for management of an intense condition of a file. Interaction of waves of pressur between the adjacent lengthened charges is experimentally modelled and time of development of a crack for maintenance of process formation of a crack is defined. Thus it is proved resource opportunities quasistaticy actions of explosion for the directed destruction of rocks between the adjacent lengthened charges.

To the calculation method of optimum distance between the adjacent lengthened charges at extraction of blocks of the natural stone

Keywords: the explosion, the lengthened charge, distance between blasthole, branch of blocks, the main crack, mechanics of destruction

In article the approach to calculation of distances between blasthole charges is offered at branch of blocks from a file in view of length of a zone нарушенности (radial cracks).

Movement of explosion products in a rock massif

Keywords: blasting operations, rock massif, shockwave, explosion’s seismic impact, movement of explosion products, metal properties

The article is about approach to a research of impact of explosions to a rock massif stress conditions. The questions are defined, which resolution allow to expand using of cross-disciplinary knowledge to improve mining efficiency and mine safety.

Blasting deep-hole charges in the conditions of support formed from earlier blasted rock mass by crushing large-blocked rocks

Keywords: large-block difficulty blown up rocks, a retaining wall form earlier blown up mining weight, surface delay times, width of disorder

In article detonation experience blasthole’s charges is resulted at crushing large-block rocks with the raised powder factors with application of a retaining wall form earlier blown up mining weight.

Accounting porosity explosive destruction complex structure of arrays

Keywords: destruction, different strengths arrays, solid inclusions, borehole charge

Considered the destruction complex structure arrays extension wells in areas of intersection with solids, exclusive The appearance of oversized pieces of rock in the central area between the hole charges. Proposed ratio for determining the diameter of my necessary extension wells in areas of intersection with solid inclusion.

The mechanism of destruction plastic rock in camouflet explosion

Keywords: destruction, finely porous rock camouflet explosion, extended and concentrated charges

This article describes the mechanism of destruction of finely porous rocks with camouflet explosion. The formulas for calculating the radii controlled crushing explosion focused and extended charge, taking into account the porosity, fracture array and other parameters. The example of calculation.

Influence of blasting on formation mechanism of pit walls load

Keywords: blasting, dynamic impact loading, stability calculation, program, quarry

During the evaluation of pit wall stability the effects of seismic forces must be considered and calculations of mining structures necessary to conduct for their ability to resist the action of waves and seismic explosion ensure safe mining of the deposit.

Principles of recycling explosion-technical systems, their processing for the resources return into economic

Keywords: recycling, explosion-technical systems, explosives, industrial recycling, recycling guidelines, returnable resources, structural and functional model of recycling VTC explosives

The article is dedicated to the development of approaches to create a structural and functional model explosion-technical systems, with their processing resources in return for the economy. Stated reasons, the main objectives, principles and tasks of utilization of these systems.

The influence of the well explosive charge design on change terms of explosive energy transfer on destructible rocks

Keywords: explosive, intermediate detonator, detonation, construction hole charges, slow intervals and in-tensors, zone overgrinding

Performed the analysis of results of studies of different ways influencing the conditions for the transfer of the energy (released in the detonation of explosives) to destructible rocks is performed.

Emulsion commercial explosives in Russia

Keywords: emulsion commercial explosives, cartridged compositions, industrial plants for commercial explosives production, trucks with mixing and charging equipment, composition ingredients, physicochemical properties, explosive properties, range of emulsion commercial explosives

The development of emulsion explosives in Russia is presented. Enterprises and companies engaged in development, introduction and running of plants for emulsion explosives production are listed. The main characteristics of home and foreign emulsion explosives and compositions on their base are described that allow to evaluate technological level and performance of their application in different conditions.

About choice of the fuel phase and method sensitization of emulsion explosives for underground works

Keywords: fuel phase, oxidation, ammonium nitrate, sensibilization, hydrogen peroxide

The influence of the nature of the fuel phase on the intensity of a thermal emission of mixes with ammonium nitrate is considered. Results of researches of influence of hydrogen peroxide solutions on sensitivity and speed of thermal decomposition of emulsion base explosives are given. The efficiency of the peroxide sensibilization of emulsion explosives is shown.

About of reaction zone thickness calculation by indirect methods

Keywords: detonation, reaction zone thickness, velocity of detonation, critical diameter of detonation

Indirect methods of an estimated of reaction zone thickness with use of Eyring equation are considered. It us shown, that are calculated values A is not thickness of reaction zone, but is relationship between critical diameter, critical and ideal detonation velocity's as follows: A=(1-Dк/Du)dк.

About an estimation of reaction zone thickness by indirect methods

Keywords: reaction zone thickness, detonation velocity, critical diameter of detonation, detonation wave, explosives

Indirect methods of an estimation of reaction zone thickness with use of Eyring and Khariton equations are considered. It is shown, that legitimacy of similar estimations does not confirm by direct experimental data.

Influence of the particles size of explosive on critical diameter and detonation velocity

Keywords: size of particles, explosive, critical diameter, detonation velocity

Analysis of the results of experimental studies on the effect of dispersion of explosives on VOD was carried out. It is established, that the values of the critical diameter and critical detonation velocity can be found from the analysis of this dependence. On the example of TNT is shown that the critical and the ideal detonation velocity is constant for explosives with a given density at any size of its particles, while the value of the critical diameter is strongly dependent on this size.

Расчёт кинетики нагрева дисперсного материала при сушке в аппарате с пульсирующим слоем и комбинированным теплоподводом

Keywords: drying, disperse material, pulsing layer, calculation of material heating kinetics

Calculation of heating kinetics of the disperse material at drying in the apparatus with a pulsing layer and combined bring heat.

Classification of explosives by conditions of usage

Keywords: classification, safety and not safety explosives, gas generating materials, criteria of safety, application condition

In article the question about not compliance of existing classification of explosives on application conditions to modern requirements of production of explosive works is brought up and pursues the aim of continuation of discussion by more wide range of experts. Shortcomings are noted, and also remarks and proposals of experts in classification of explosives by application conditions are provided.

Results of the preliminary modeling of the process formation explosive dam of the Kambarata HPS N2

Keywords: dam, explosion, modeling

Results of the modeling investigation of scheme of the explosion for construction dam of the Kambarata HPS № 2 are performed. Optimal parameters of location and mass of charges are developed.

Formation and distribution of the gas cloud at the construction of the dam Kambaratinsky HPP-2 by means of the directed explosion

Keywords: explosion, destruction, a gas cloud, optical registration, microparticles, electronic and optical microscopy, laser spectrometry of particles

With reference to conditions of the directed explosion at building of a dam of Kambaratinsky HYDROELECTRIC POWER STATION dynamics of formation and distribution of a gas cloud was investigated. An experimental quality monitoring and computer modeling were used. Concentration of mineral particles on different distance from explosion epicenter, their mineralogical and disperse structure is defined. At the analysis of distribution of particles in the size less than 10 microns their primary concentration in a range 1,0-3,0 microns is established. Ecological consequences of explosion have appeared at level usual mass explosions on open-cast mines.

Features of the fossil coal softening mechanism by carbon dioxide

Keywords: carbon dioxide, coal seam, processing, stress, weakening

The article presents information on the physic-chemical effects of carbon dioxide and characteristics of its interaction with fossil coal. Much attention is paid to the complex research of the mechanism of interaction of CO2 with coals of various grades. The conclusion about the prospects of using carbon dioxide to control the state coal-rock seam.

Методические основы оценки сейсмического действия массовых взрывов по результатам анализа сейсмовзрывных продольных и поверхностных волн

Keywords: mass explosion, seismic blast waves, a volumetric wave, a superficial wave, berma, safety, speed of displacement, velosigramma, the reference charge, allowable speed

Methodical bases of the estimation of seismic action of mass explosions by results of analysis seismic blast waves of longitudinal and superficial waves.

The permanent explosion safety of mine excavations’ faces in coal mines

Keywords: explosion, inflammation, flammable gases, explosion safety, explosion hazards, index of oxygen, methane, depleted air

The materials of research of explosion of flammable gases and coal dust, which forms in a rock cracks taking into account rock pressure, air pressure and oxygen content, are shown in this article. The dependences of oxygen index of flammable gases and nanoparticles of coal dust from their low concentration limit of explosiveness was determined. The basic conditions of explosion protection of mine companies during production of gas-bearing outburst stratums was developed. The safe parameters of permanent explosion safety in excavations of coal mines during controlled ventilation with using of oxygen-depleted air was determined.

Large-scale blasting parametrization and implementation in the Makmal mine under seismic hazard conditions in the high-mountain zone of ridges of the Tian-Shan

Keywords: explosive, mined-out stope, pillar, nonelectric blasting, air blast, dangerous and restricted area

The paper describes technological procedure of pillar caving by large-scale blasting in the Makmal Mine, which has enhanced underground mining safety and the surface social and industrial infrastructure integrity.

The practice of applying of regression analyze for assessment of seismic-safety distances in open surface blasting

Keywords: seismic at blasting, blasting on surface mining, regression analyze

Statistical procedures as a part of regression analyze for prediction of seismic-safety distance at open surface mining blasting are discussed.

Seismic effect of Kambarata explosion

Keywords: seismic wave, seismic effect and magnitude of explosion

The results of the study of the seismic effect Kambarata explosion. From seismograms in the near field of explosion to determine the actual origin time and the time interval between the first and second bursts of charges. Compares the magnitude of the explosion to the regional seismic network MPVA Kyrgyzstan, and according to the Geophysical Service RAS. It is obtained the dependence of the magnitude of industrial explosions on their power and accuracy of seismic networks in determining the coordinates of the epicenter and the time in the hearth.

Effective application of methane and dust-air mixtures explosion localization in coal mines

Keywords: explosion suppression, explosion confining barrier, the flame front, blast evolution

This paper describes the mechanism of explosion localizing screens action, showing their effectiveness, depending on explosions stages. Special attention is given to the new automatic system for explosions localization.