Determining the optimum cutting direction in granite quarries through experimental studies: a case study of a granite quarry

Yarahmadi, Reza; Bagherpour, Raheb; Khademian, Amir; Sousa, Luís; Almasi, S. Najmedin; Esfahani, Mahin Mansouri

doi:10.1007/s10064-017-1158-5

Cited by 16 publications

(9 citation statements)

References 52 publications

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“…On the other hand, the index of microcracks (IF) of Delgado Rodrigues (35) takes into account the P-wave velocities both in dry and water saturated samples as compared to the theoretical velocity of the non-fissured rock estimated from the typical velocity and the volume percentage of each mineral (∑Vpm.Xm). Moreover, IF takes into account the dry and saturated conditions by introducing the water and the air Vp in the Equation [4].…”

Section: Methodsmentioning

confidence: 99%

“…Contraction during the cooling process may lead to the formation of microcrack networks without any preferential directions. These are characterized by their density and orthogonal disposition, the degree of which is a function of the degree of contraction; some authors (3,4) studied these large-scale anisotropies in relation with the best cutting direction in granite quarries.…”

Section: Introductionmentioning

confidence: 99%

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Interpretation of petrographic anisotropy in ornamental granites based on P wave velocity measurements

et al. 2020

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The existence of a possible anisotropy, determined by the orientation of any mineral or by microcrack network in granite rock, isn´t easily detected by the naked eye. Five granitic rocks from Galicia (Spain), namely Albero, Gris Alba, Gris Mondariz, Rosa Porriño and Traspielas, were characterized petrographically by means of textural and mineralogical studies, using optical polarizing microscopy, and fractographic studies were carried out under scanning electron microscopy. Longitudinal wave propagation velocity was measured in three orthogonal directions on cubic samples, oriented according to rift surface (known in quarry works like the preferential partition surface visible in the blocks). Vp was measured on dry and water saturated samples. All the dry samples showed an anisotropic behaviour of Vp. Models of microcrack network distribution and possible mineral grain orientation were developed based on the obtained data.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interpretation of petrographic anisotropy in ornamental granites based on P wave velocity measurements

et al. 2020

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“…In addition, porosity was found to have a positive linear relationship with the unit energy (Yilmazkaya and Ozcelik, 2016). In another study, Yarahmadi et al (2019) investigated the cutability of granite at different angles by conducting a series of wire cutting tests on granite samples along 12 different directions with 15° angular intervals. This study found that the cutting rate varied with the angle and reported a 43% difference between the highest and lowest cutting rates, which shows the importance of the selection of a cutting angle for the cutting rate (Yarah madi et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Geological Properties of Dimension Stones on the Prediction of Specific Energy (Se) During Diamond Wire Cutting Operations

Khoshouei

Jalalian

Bagherpour

2020

MGPB

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Given the increasing demand for dimension stones, mining operations in quarries have always been an important branch of mining engineering. Among different techniques, diamond wire cutting is one of the most common methods of dimension stone mining. A reliable assessment and accurate prediction of diamond wire cutting performance are essential for feasibility analysis and operational planning in this area. This performance depends on factors such as physical, mechanical, and textural properties of the rock and the characteristics of cutting operations which can be evaluated by criteria such as specific energy, production rate, efficiency, and diamond bead wear rate. This study aims to develop a method for predicting the specific energy of diamond wire cutting in dimension stones based on rock properties. For this purpose, the specific energy of diamond wire cutting in 11 different igneous rock samples was measured. Given the high strength and abrasivity of igneous rocks, cutting operations in these rocks generally requires a great amount of energy. In a series of tests performed on the samples, rock properties such as uniaxial compressive strength (UCS), Brazilian tensile strength (BTS), Young's modulus, density, textural properties, abrasivity and operating factors such as pullback amperage were measured. The measured parameters were divided into four groups of physical, mechanical, textural, and operating parameters. After determining the specific cutting energy of each sample, the relationship of the energy with each individual property was investigated. This investigation showed that density, abrasivity, and p-wave velocity respectively had the highest correlation with specific energy. Using the correlation results, four input parameters (one from each of the four considered parameter groups) were selected for inclusion in the prediction model. These parameters were density, abrasivity, wave velocity, and amperage. Multivariate linear regression was then used to analyse the effect of rock properties and operating parameters on specific energy. The developed regression model showed that once the rock properties are known, the specific energy can be predicted with an accuracy of 85.8%. The proposed model can be used to estimate the specific energy of diamond wire cutting operations in dimension stone quarries in advance, and predict the amount of energy consumption, the required energy source, and the optimal cutting machine accordingly.

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“…Various processing technologies are used at natural stone quarries and factories to manufacture as building materials. In quarries, in the production of natural stone blocks, diamond wire cutting and chain arm cutting machines are widely used in factories, plates and panels manufacturing in the production of block cutter ST and gangsaw machines [9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Force and Specific Energy in Natural Rocks Cutting by Four-Axis Machine

Sarıışık¹

2019

Earth Crust

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This study used a four-axis computer controlled machine to determine the cutting forces (C f), specific cutting energy (S c) and specific energy (S e) affecting the processability of natural rocks. A total of 17 types of natural rocks were categorized according to their geological formations. This study consisted of three parts: (1) experimental measurement of the C f resulting from processing natural rocks using a 6.0-mm diameter end mill cutting tool and a four-axis machine; (2) calculation of C f ,S c and S e values; and (3) statistical analysis of the parameters. In terms of C f ,S c and S e values, a statistically significant difference (P < 0.001) was observed among a depth of cut (d p) and feed speed (V a). It was found that the parameters that affected the processability of natural rocks were d p and V a. Accordingly, the processability of natural rocks processing type, d p and V a was found that affected. Simple linear regression was performed to examine the relationship between physicomechanical properties, and between C f ,S e and S c values. As a result, regression equations were developed in consideration of the physicomechanical properties of natural rocks and the C f ,S c and S e equation for the prediction of the efficiency of computer numerical control (CNC) machines.

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Determining the optimum cutting direction in granite quarries through experimental studies: a case study of a granite quarry

Cited by 16 publications

References 52 publications

Interpretation of petrographic anisotropy in ornamental granites based on P wave velocity measurements

Interpretation of petrographic anisotropy in ornamental granites based on P wave velocity measurements

The Effect of Geological Properties of Dimension Stones on the Prediction of Specific Energy (Se) During Diamond Wire Cutting Operations

Force and Specific Energy in Natural Rocks Cutting by Four-Axis Machine

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