— In this paper No 2 rock emulsion explosive was chosen for field blasting and its explosive specifications and physical parameters are given in Table 3 Depending on the explosive type and charge construction of the blasthole the equivalent blasting load time history curves are shown in Fig 7 The peak pressure of the single hole charges
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Emulsion explosives EE have been commercially available in various forms for over 50 years Over this period the popularity and production technology of this class of energetic materials have been developing constantly Despite this rapid rise to prominence and in some applications prevalence over traditional energetic materials remarkably little
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— How to quantitatively calculate the rock breaking efficiency of SC CO2 supercritical carbon dioxide is the focus of attention in the engineering application and economic comparison of non explosive rock breaking technology Through the equivalent equivalent calculation of industrial emulsion explosive the typical representative granite
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In rock blasting for mining production stress waves play a major role in rock fracturing along with explosive gases Better energy distribution improves fragmentation and safety lowers production costs increases productivity and controls ore losses and dilution Blast outcomes vary significantly depending on the choice of the explosive and the properties
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— To overcome the difficulty of field experiment of explosive compaction EC technology for strengthening embankment of existing highway and to verify the reliability of numerical simulation this
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— The charge weight of the rock emulsion explosive was converted to that of TNT by the equivalent coefficient obtained in the literature [20] In addition unlike spherical explosives the influence of the D/L ratio of the explosive cylinder [29] plays a key role in the overpressure and impulse Therefore the same D/L ratio was taken into
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— A microspheres sensitized emulsion explosive to be used in rock blasting tests is characterized by means of the cylinder test This test measures the expansion of a copper tube upon detonation of an explosive charge inside Eight cylinder tests have been made with two different diameters
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— Underground use of emulsion explosives on a large scale started in 2011 and by now Apatit has put into operation 15 mixing and charging units including 9 units for loading upward holes and 6
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— How to quantitatively calculate the rock breaking efficiency of SC CO2 supercritical carbon dioxide is the focus of attention in the engineering application and economic comparison of non explosive rock breaking technology Through the equivalent equivalent calculation of industrial emulsion explosive the typical representative granite
— No 2 rock emulsion explosive The traditional smooth blasting charge structure used in the East Tianshan tunnel is optimized and adjusted based on the critical distance A series of full section tests are conducted and the results are analyzed to assess the feasibility of using the new charging structure
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— In the study the two color pyrometer technique was used to measure the transient temperature field of emulsion explosives with different contents of TiH 2 powders The experimental results showed that the introduction of TiH 2 powders could significantly increase the explosion temperature and fireball duration of emulsion explosive When
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— The computation from the application package revealed that 611 blast holes require kg of high explosives 166 cartons of explosives and kg of low explosives 806 bags of explosives
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— Emulsion explosives frequently referred to as the latest gener ation explosives are a prime example of this trend even though they were invented more than 50 years ago [1] According to the data provided by the Federation of Explosives Manufacturers the share of bulk emulsion explosives in the total usage of emulsions in
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— With the 45% denser product a borehole loaded with ANFO that would have held 100 lbs of explosive product the exact same borehole loaded with emulsion could hold 145 lbs of explosives If you have not read our blog post on Powder Factor go back and read it to understand the significance of this difference
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Emulsion explosives are a common industrial explosive and have a non ideal detonation behaviour The detonation performance for a given product changes with the charge diameter ground conditions connement and density The burning process of an emulsion explosive has been modelled with an ignition and growth model in the LS DYNA code
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— The following comparisons were made for both types of explosives mining profiles after blasting the effects of explosives on the rock mass advance per blast fragmentation re entry periods and
— XIONG Jiaquan LIN on Factors Affecting the Performance of Emulsion Explosive[J] EXPLOSIVE MATERIALS 2010 39 03 13 [3] [J] 2010 39 02 10 XU
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density explosives to break rocks effectively but with continuous emphasis being given to environmental and social commitments a shift in trend is observed from current use of site mixed bulk emulsion products to low density emulsion explosives in medium to hard grounds Heltzen and Kure13 showed that low density explosives
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Nelson Brothers PowerNel emulsion products are powerful reliable safe and industry leaders in performance PowerNel emulsions are high quality and optimized for individual blasting Brothers explosives emulsions are designed to provide the maximum performance in every rock type and in any condition
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— This column charge explosive is used for blasting all types of rock formations in combination with Emulsion booster explosives It is available in 83mm and above sizes KELEM 800 Emulsion booster explosive It can be used for blasting hard strata conditions This is also supplied in 83mm diameter and above size Also in Couple
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