Fragmentation assessment and design of blast pattern at
A brief method of blast design is given in the paper. The crusher efficiency is improved and the cost of crushing is reduced by a reduced mean fragment size of In limestone quarries, ammonium nitrate–fuel oil (ANFO) or site mixed emulsion (SME) are generally used for rock fragmentation. Both these explosives cause Effect of Type of Explosive and Blast Hole Diameter on
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Analysis of blasted rocks fragmentation using digital image
The first application involved measurement of size distribution of the fragmented blasted rock mass in Dewan limestone quarry of Karachi (Pakistan) to According to the EPA (2006), the limestone humidity values (M) were considered to be 2.1% and 0.7% for mechanical extraction and blasting, respectively, LCA analysis and comparison in quarrying: Drill and blast vs
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DETERMINATION OF BENCH BLAST DESIGN PARAMETERS FOR LIMESTONE QUARRY
M. T. Mohamed, T. M. Mahran, Youssif Sh. Mohamed. Bench design geometry parameters are considered the important issue of rock extraction. It directly has influences on rock Cite this paper: Elias Kassahun Woldeselassie, Chi Xiuwen, Dereje Demissie Aredo, Optimization of Drilling and Blasting by Empirical Modelling Specifically Kuz-Ram and Modified Kuz-Ram Model Optimization of Drilling and Blasting by Empirical
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Fragmentation assessment and design of blast pattern at
At a limestone quarry, blasting costs per unit volume of rock were reduced by 7%. This is obtained by increasing burden and spacing distances. In addition, better This study introduces the Phansalkar binarization method, proposes the watershed seed point marking method based on the solidity of rock block contour, and A method of blasted rock image segmentation based on
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A new modification to the Kuz-Ram model using the
Section snippets Materials and methods. The drilling and blasting parameters from the limestone quarry located in Western Anatolia Cement Plant (Batı Anadolu Cement Plant) located in Izmir, Turkey and that of Chadormalu iron ore mine located in 180 km northeastern of Yazd in Central Iran available in literature were used Blasting: This method involves using explosives to loosen the limestone from the ground. The limestone is then transported out of the quarry using trucks or conveyor belts.How do you extract limestone from a quarry? LinkedIn
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Blast Vibration and Fragmentation Control at Heavily Jointed Limestone
The fragmented view of blast conducted at the 2nd bench of ‘A’ Quarry of Sagmania and Birhauli Limestone Mines, Rockwell EH (1927) Vibration caused by quarry blasting and their effect on structures. The Explosives Engineer, March, pp. 93–96 and April, pp. 143–145 Scherpenisse CR, Adamson WR (2003) Vibration simulation method to1.Wedging: This quarrying method is appropriate for costly, soft and stratified rocks such as sandstone, limestone, laterite, marble and slate. Holes about 10–15 cm deep, at a distance of about 10 cm are made perpendicular to the rock. Steel pins and wedges or plugs (conical wedges) and feathers are inserted into them, these plugs are Quarrying of Stone: Types, Methods & Tools
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Rock Mass Classification for the Assessment of Blastability in
6.3 Site Study of Limestone Quarry at Sri Lanka. Aruwakkalu Limestone is a part of Sri Lanka’s Jaffna limestone, which underlies the whole of Jaffna Peninsula and extends southwards mostly along the west coast as shown in Fig. 12. Limestone deposit is of Miocene age in the southwestern part of the Aruwakkalu which is approximately 40 km Limestone has four major folds and one reverse fault. Limestone strata are massive, blocky and fractured in different portions of the deposit. HRB 150 (INDUS Make) drills are used for drilling hole diameter of 165 mm. ANFO with cast booster/slurry explosives and nonel detonators are used as explosives for blasting limestone.Prediction of Blast-Induced Ground Vibration at a
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Optimization of Drilling and Blasting by Empirical Modelling
This implies that almost the blasting practice in Derba Midroc limestone quarry site were very healthy. Mean fragment size The predicted mean fragment sizes for all Blast as shown in Table 8 below are between 16.61 and 19.76cm for the Kuz-Ram and for the Modified Kuz-Ram models between 16.99 and 20.21cm.Application of Kuz Ram Model to Minimize the Drilling and Blasting Operational Cost at RP3 Lafarge Limestone Quarry July 2022 International Journal of Science and Research (IJSR) 11(6):1074-1081(PDF) Application of Kuz Ram Model to Minimize the Drilling
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The assessment of slope stability and rock excavatability in a
The aim of this study is to evaluate the stability and excavatability of newly stripped rock slopes (slope 1 (SN–1), slope 2 (SN–2), and slope 3 (SN–3)) in a limestone quarry. These are new production sites with comparable geological formations along the southern part of the quarry where three planar failures were previously observed. For this The measurement directions were determined considering the location of the fault zone. Location of the limestone quarry, blasting and measurements points, and fault zone direction are given in Figure 6. The resulting values were analyzed using the empirical estimation model proposed by the United States Bureau of Mines (UTY) for each Investigation of Fault Effect on Blast-Induced Vibration
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Minimization of Blast-Induced Hazards and Efficient
The stochastic goal programming method is more effective than another method for optimal design/plan of blasting operations (Bakhtavar et al. 2017). Rai, P., & Choudhary, B. S. (2008). A firing pattern for generating free face in a limestone Quarry—A case study. The Journal of Institute of Engineers (India), Mining Engineering issue, 88Sep 2009. Irfan Celal Engin. Blasting is the most productive excavation method in hard rock mining. In quarries, to remove the mother rock from in-situ and crush into the desired size is realizedQuarry blasting design parameters. Download
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(PDF) DETERMINATION OF BENCH BLAST DESIGN
Blasting is the most productive excavation method in hard rock mining. In quarries, to remove the mother rock from in-situ and crush into the desired size is realized by bench blasting method.Rippers can be used for limestone mining as limestone is a ‘rippable’ sedimentary rock (refer to Sect. 3.1.1) Using rippers in small mines or for a group consisting of more than one mine is economical and productive. Instantaneous blasting or blasting with delay detonators in mines are executed in circuits.Modern Technological Applications for Limestone Mining
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Predicting Ground Vibrations Due to Mine Blasting Using a
Blasting plays a fundamental role in rock fragmentation, and it is the first preparatory stage in the mining extraction process. However, its undesirable effects, mostly ground vibration, can cause severe damages to the surroundings, such as cracks/collapses of buildings, instability of slopes, deformation of underground space, affect underground It has been reported that the type of equipment used and the method of working also affect the excavatability of rocks (Pettifer and Fookies, 1994). 2. The Araklı-Taşönü limestone quarry The Araklı–Taşönü limestone quarry is situated approximately 40 km from the city of Trabzon in northeast Turkey (Fig. 1). The quarry isThe assessment of slope stability and rock excavatability
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Environmental impact of blasting at Drenovac limestone quarry (Serbia
In present paper, the blast-induced ground motion and its effect on the neighboring structures are analyzed at the limestone quarry "Drenovac" in central part of Serbia. Ground motion is examined by means of existing conventional predictors, with scaled distance as a main influential parameter, which gave satisfying prediction El Perecil quarry, owned by Cementos Tudela Veguín S.A., is located in the North of Spain (Asturias); it extracts limestone and schist and also has layers of sandstone. Limestone is exploited as the main material by blasting, while schists are obtained by 20% blasting and 80% ripping.Holistic Approach to Define the Blast Design in Quarrying
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(PDF) Analysis of blasted rocks fragmentation using digital
The digital image processing method with the aid of Split Desktop software was used in this study, to analyze the size of fragmentation in Obajana limestone quarry. Two pits of similar line ofIn this study, which dealt with the amount of fragmentation in Pir Ali limestone mine, the digital image processing method and Split Desktop software that is the most efficient software in this respect were used and it can be concluded that the closer F80 of the blasted rocks to the crusher entrance, reduced the production costs. One of the [PDF] Analysis of blasted rocks fragmentation using digital
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