Blastability evaluation for rock mass fragmentation in Iran central iron ore mines

Akbari, Majid; Lashkaripour, Gholam Reza; Bafghi, Alireza Yarahamdi; Ghafoori, Mohammad

doi:10.1016/j.ijmst.2014.11.008

Cited by 36 publications

(13 citation statements)

References 9 publications

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“…10 and thereby reflecting the same design method. The small difference can be attributed to variation in rock mass structural features (Gheibie et al, 2009, Akbari et al, 2015. Table 4 shows the percentage passing obtained from the Kuz-Ram experiential model analyses of the blasted rock.…”

Section: Resultsmentioning

confidence: 99%

Application of Split Desktop Image Analysis and Kuz-Ram Empirical Model for Evaluation of Blast Fragmentation Efficiency in a Typical Granite Quarry

Idowu¹,

Olaleye²,

Saliu³

2021

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Evaluation of fragmentation efficiency is an integral aspect of blasting operation. This study therefore assesses the efficiency of fragmentation size at Eminent granite quarry, Ibadan, Nigeria using Split Desktop software and Kuz-Ram empirical model. Five muckpiles of blasted rocks with the same blast design were analysed. The muckpile images were captured using smart high precision digital camera and uploaded into computer for Split Desktop analysis. The results of the fragment size distribution obtained from Kuz-Ram vary slightly with that of the Split Desktop but follow similar trend. The average values of F80 and F90 from the Split Desktop image analysis were 90.96 cm and 98.24 cm respectively. The Kuz-Ram model values for F80 and F90 were 88.52 cm and 92.95 cm respectively. The results of the Split Desktop were compared to the results obtained from the Kuz-Ram experiential model. The findings showed that the results obtained from Kuz-Ram empirical model were in conformity with the results from the Split Desktop software based on empirical relationship. Hence, the model is good for preliminary evaluation of blast design. Keywords: Blasting, Particle Size Distribution, Split Desktop Software, Muckpile, Fragmentation Indicator

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Section: Resultsmentioning

confidence: 99%

Application of Split Desktop Image Analysis and Kuz-Ram Empirical Model for Evaluation of Blast Fragmentation Efficiency in a Typical Granite Quarry

Idowu¹,

Olaleye²,

Saliu³

2021

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“…The vibration propagation characteristics were measured in a series of ground and underground blasting experiments using variable TNT charge amounts and underground volumetric spaces. Subsequently, regression analysis was performed to derive an equation for estimating the square-root scaled distance, which can accurately analysis the vibration propagation characteristics of a blast in an open environment (Akbari, Lashkaripour, Yarahamdi Bafghi, & Ghafoori, 2015;Kamel, Abdellah, Korichi, & Abderazzak, 2015;Singh et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

In-ground vibration propagation characteristics during underground blasting

Kim¹,

Kim²,

Mahrous³

2019

Min. miner. depos.

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In this study, we investigated the vibration propagation characteristics in ground caused by the explosion pressures during ground and underground blasting. In addition, the use of Styrofoam as a simulation medium, which represents the void during underground blasting, was investigated.Methods. The investigation method is the measuring and comparing the vibrations using variable trinitrotoluene (TNT) charge amounts and underground volumetric spaces.Findings. The regression analysis results based on experimental calculations indicated that the vibration levels were lower and vibration attenuation occurred more rapidly during underground blasting than those during ground blasting.Originality. As the underground volumetric space increased, the vibration levels lowered and vibration attenuation became more gradual.Practical implications. The use of Styrofoam to simulate the void in the underground space during blasting was deemed inappropriate, however, Styrofoam may be appropriate as a medium for low-impedance grounds.

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“…Blasting remains one of the most widely used methods in open-pit mines worldwide (Singh et al 2015;Pérez et al 2018), although it produces massive emissions of fine particles and toxic gases (Akbari et al 2015;Abdollahisharif et al 2016;Liu et al 2019a;Taylor et al 2014). Those fine particulates not only can increase the prevalence of pneumoconiosis in mineworkers (Petavratzi et al 2005;Xu et al 2018), but also pollute atmospheric environment (Csavina et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Physicochemical factors affecting the wettability of copper mine blasting dust

Jin

Liu

Guo

et al. 2021

Int J Coal Sci Technol

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To investigate the factors affecting the wettability of copper mine blasting dust, the primary blasting dust was collected from an open-pit copper mine and separated into hydrophilic blasting dust (HLBD) and hydrophobic blasting dust (HBBD) using water flotation method. The physicochemical properties of HLBD and HBBD were measured and compared with each other. The properties included particle size distributions (PSDs), micromorphologies, pore structures, mineral components and surface organic carbon functional groups. The results show that particle size and pore structure of the blasting dust are the main factors affecting its wettability. Specifically, particle size of HBBD is smaller than that of HLBD, and their respiratory dust (less than 10 µm) accounts for 61.74 vol% and 53.00 vol%, respectively. The pore structure of HBBD is more developed, and the total pore volume of HBBD is 1.66 times larger than that of HLBD. The identical mineral compositions were detected in HLBD and HBBD by X-rays diffraction (XRD); however, the surface organic hydrophobic component of HBBD is slightly larger than that of HLBD, this may be the reason for the poor wettability of HBBD. This study is significant to understand the effects of physicochemical properties of copper mine blasting dust on its wettability.

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Blastability evaluation for rock mass fragmentation in Iran central iron ore mines

Cited by 36 publications

References 9 publications

Application of Split Desktop Image Analysis and Kuz-Ram Empirical Model for Evaluation of Blast Fragmentation Efficiency in a Typical Granite Quarry

Application of Split Desktop Image Analysis and Kuz-Ram Empirical Model for Evaluation of Blast Fragmentation Efficiency in a Typical Granite Quarry

In-ground vibration propagation characteristics during underground blasting

Physicochemical factors affecting the wettability of copper mine blasting dust

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