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bottom charge, powder Factor for limestone quarry at Al Ain El Sukhna – west of Gulf of Suez according to field trial tests. 1. Introduction In surface mining drilling and blasting are the major …
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displace a given volume of rock (powder factor). The burden-to-charge diameter ratio varies with rock density, changing the powder factor. The average burden-to-charge diameter ratio of 25 …
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As a result, evaluating the slope stability and the contribution of powder factor on ground vibration and noise induced by blasting in small scale mines plays an important role in …
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This study examined the selection of powder factor in blast holes at Dangote limestone quarry, located in Obajana, Kogi State, North-Central Nigeria.
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The powder factor above grade has been used, in its energy form obtained as the product of the mass powder factor by the explosive energy per unit mass. ... El Aljibe is …
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The density of the rock is a major factor in determining how much explosive is needed to displace a given volume of rock (powder factor). The burden-to-charge diameter ratio varies with rock …
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This is because a powder factor of 1.1 may work for a bench that has a height 2.75 times the burden, but benches with a height less than this may require a higher powder factor …
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Powder factor can be defined as the quantity of explosives (kg) required to break a unit volume or tonne (t) of rock. The prospect of excavating rocks by blasting is characterized …
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The explosive powder factor is used in mining to calculate the quantity of explosive required per mass of rock fragmented, and this study looks at how different powder factors …
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Powder factor,kg/BCM ... and the Kuz-Ram model in particle size distribution analysis at a limestone quarry. ... of blasting is a major factor in the surface mining industry …
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This research work is carried out to aim analysis and improvisation of powder factor and rock fragmentation achieved by blasting at JK cement Maliakhera limestone mine, Nimbahera, …
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This study examined the selection of powder factor in blast holes at Dangote limestone quarry, located in Obajana, Kogi State, North-Central Nigeria.
WhatsApp: +86 18221755073
Powder factor = 0.5kg per square metre of face Do not stem holes. Fire all holes on the same delay, or in groups of ≥ 5 holes Smooth Blasting Spacing = 15 x Hole diameter (hard rock) 20 …
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This paper aims to review the various methods for powder factor estimation in both surface bench blasting and underground tunnel operations; to assess of the influence of intact rock …
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Powder factor can be defined as the quantity of explosives (kg) required to break a unit volume or tonne (t) of rock. The prospect of excavating rocks by blasting is characterized by a specific …
WhatsApp: +86 18221755073
Many different aspects of rock strength were considered in the 1960s, including the tensile strength, the elasticity or resistance, and the density. Today, in a majority of situations, the blast is now designed only considering the density of the rock because, generally, as the rock gets …
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using Monte Carlo simulation and the relationship between powder factor with the fragmentation is 72% with equation Y = -102,89X + 50,086. Based on its calculation, to attain the maximum …
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Limestone is a fundamental raw material in various industrial sectors. It is formed due to biochemical precipitation of calcium carbonate, and further compaction over long …
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SOP FOR DETERMINATION OF POWDER FACTOR IN COAL MINES Powder Factor: The quantity of explosive required to break one cubic meter of rock is known as powder factor. …
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The mean fragment size becomes finer with increase in powder factor with a correlation coefficient of 0.76. Powder factor also has a high correlation with the uniaxial …
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Selected limestone mine for this study is in Thailand. Various rock mass properties such as GSI, RMR, and stemming length were studied to find out the correlation with rock …
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Powder factor is the amount of explosive (pounds) to the total amount of rock blasted (tons) to develop a scale which some use to develop a blast design. This system is …
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Powder factor can be defined as the quantity of explosives (kg) required to break a unit volume or tonne (t) of rock. The prospect of excavating rocks by blasting is characterized by a...
WhatsApp: +86 18221755073
Rock blasting in open pit mining requires good fragmentation control through effective blast design and optimum powder factor for higher productivity.
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The powder factor is defined as the ratio of unit volume of rock to the amount of explosive energy applied. A higher powder factor signifies a larger unit volume of rock per unit …
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Ground vibration is one of the most unfavourable environmental effects of blasting activities, which can cause serious damage to neighboring homes and structures. As a result, …
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This paper aims to review the various methods for powder factor estimation in both surface bench blasting and underground tunnel operations; to assess of the influence of intact rock properties on powder factor selection, and to analyse …
WhatsApp: +86 18221755073
