Original Research Paper Exploration
1. Determining optimal distance from outlet of auxiliary forcing ventilation system to development of heading in underground mines

V. Adjiski; D. Mirakovski; Z. Despodov; S. Mijalkovski

Volume 10, Issue 4 , Autumn 2019, Pages 821-832

http://dx.doi.org/10.22044/jme.2019.8140.1683

Abstract
  Auxiliary ventilation of the blind development heading in underground mines is one of the most challenging work activities amongst mining underground operations. The auxiliary forcing ventilation system provides positive pressure, cooling, controlling gas layering, and removing diesel fumes and dust ...  Read More

Case Study Environment
2. Evaluation of stream sediment contamination by potentially toxic elements around mining and farming areas (SE Nigeria)

G.U Sikakwe

Volume 10, Issue 4 , Autumn 2019, Pages 833-851

http://dx.doi.org/10.22044/jme.2019.8180.1690

Abstract
  In this work, the concentrations of the potentially toxic elements in stream sediments in SE Nigeria were assessed for pollution monitoring in mining, quarrying, and farming areas. The levels of iron, molybdenum, vanadium, copper, lead, zinc, nickel, cobalt, manganese, chromium, barium, and beryllium ...  Read More

Original Research Paper
3. Calculating inter-sectoral carbon flows of a mining sector via hypothetical extraction method

M. J. Sajid; N. Shahani; M. Ali

Volume 10, Issue 4 , Autumn 2019, Pages 853-867

http://dx.doi.org/10.22044/jme.2019.8263.1701

Abstract
  Mining is among the oldest industries. It is the primary source of raw materials for most of the sectors. Little is known about the complex inter-sectoral carbon linkages of the mining industry. In this work, we estimate the inter- and intra-sectoral carbon linkage impacts of the mining sector across ...  Read More

Original Research Paper
4. Evaluation of background geochemical speciation of heavy metals in overburden topsoil of bituminous sand deposit area, Ondo state, Nigeria

O.E. Ifelola

Volume 10, Issue 4 , Autumn 2019, Pages 869-882

http://dx.doi.org/10.22044/jme.2019.8377.1725

Abstract
  Metals are ubiquitous within the earth crust. However, the exceptional high-level concentration of heavy metals in the soil due to natural or anthropogenic activities and the chemical forms in which they exist determine the level of risk they portend to the environment. This work was aimed at determining ...  Read More

Original Research Paper Environment
5. Delineation of alteration zones based on artificial neural networks and concentration-volume fractal methods in the hypogene zone of porphyry copper-gold deposit, Masjed-Daghi, East Azerbaijan Province, Iran

H. Nikoogoftar; A. Hezarkhani

Volume 10, Issue 4 , Autumn 2019, Pages 883-901

http://dx.doi.org/10.22044/jme.2019.7948.1663

Abstract
  In this paper, we aim to achieve two specific objectives. The first one is to examine the applicability of the Artificial Neural Networks (ANNs) technique in ore grade estimation. Different training algorithms and numbers of hidden neurons are applied to estimate Cu grade of borehole data in the hypogene ...  Read More

Original Research Paper Exploitation
6. Application of simulated annealing for optimization of blasting costs due to air overpressure constraints in open-pit mines

H. Bakhshandeh Amnieh; M. Hakimiyan Bidgoli; H. Mokhtari; A. Aghajani Bazzazi

Volume 10, Issue 4 , Autumn 2019, Pages 903-916

http://dx.doi.org/10.22044/jme.2019.8084.1675

Abstract
  Estimating the costs of blasting operations is an important parameter in open-pit mining. Blasting and rock fragmentation depend on two groups of variables. The first group consists of mass properties, which are uncontrollable, and the second one is the drill-and-blast design parameters, which can be ...  Read More

Original Research Paper Rock Mechanics
7. Development of a GEP model to assess CERCHAR abrasivity index of rocks based on geomechanical properties

M. H. Kadkhodaei; E. Ghasemi

Volume 10, Issue 4 , Autumn 2019, Pages 917-928

http://dx.doi.org/10.22044/jme.2019.8141.1684

Abstract
  The CERCHAR abrasivity test is very popular for determination of rock abrasivity. An accurate estimation of the CERCHAR abrasivity index (CAI) is useful for excavation operation costs. This paper presents a model to calculate CAI based on the gene expression programming (GEP) approach. This model is ...  Read More

Original Research Paper Exploitation
8. Characterization of rare earth elements by coupling multivariate analysis, factor analysis, and geostatistical simulation; case-study of Gazestan deposit, central Iran

F. Soltani; P. Moarefvand; F. Alinia; P. Afzal

Volume 10, Issue 4 , Autumn 2019, Pages 929-945

http://dx.doi.org/10.22044/jme.2019.8374.1716

Abstract
  The traditional approaches of modeling and estimation of highly skewed deposits have led to incorrect evaluations, creating challenges and risks in resource management. The low concentration of the rare earth element (REE) deposits, on one hand, and their strategic importance, on the other, enhances ...  Read More

Original Research Paper
9. Application of cut set method to reliability evaluation of mine ventilation networks

Z. Rezaei; M. Ataee-pour; H. Madani

Volume 10, Issue 4 , Autumn 2019, Pages 947-966

http://dx.doi.org/10.22044/jme.2019.8440.1722

Abstract
  Providing a fresh and cool airflow in underground mines is one of the main concerns during mining. Destruction of support systems, the presence of undesirable objects in the airway and distortion of airflow are the parameters involved that would result in pressure loss, which would affect the ventilation ...  Read More

Original Research Paper Rock Mechanics
10. Effects of number of freeze-thaw cycles and freezing temperature on mode I and mode II fracture toughness of cement mortar

K. Abdolghanizadeh; M. Hosseini; M. Saghafiyazdi

Volume 10, Issue 4 , Autumn 2019, Pages 967-978

http://dx.doi.org/10.22044/jme.2019.8501.1728

Abstract
  Natural and artificial materials including rocks and cement-based materials such as concrete and cement mortar are affected both physically and chemically by various natural factors known as weathering factors. The freeze-thaw process, as a weathering factor, considerably affects the properties of rocks ...  Read More

Original Research Paper Rock Mechanics
11. A numerical analysis of effect of segmental lining joints on tunnel support internal forces under seismic loading

I. Kheyrandish; M. Ahmadi; H. Jahankhah

Volume 10, Issue 4 , Autumn 2019, Pages 979-999

http://dx.doi.org/10.22044/jme.2019.8508.1730

Abstract
  During an earthquake, the better performance of segmental tunnel lining, compared to the continuous in-cast concrete lining, is generally related to the joints between segments. In order to better understand the influence of the segment joints, their effect on the internal forces induced in tunnel lining ...  Read More

Original Research Paper Rock Mechanics
12. Numerical analysis of slide-head-toppling failure

H. Sarfaraz; M. H. Khosravi; M. Amini

Volume 10, Issue 4 , Autumn 2019, Pages 1001-1011

http://dx.doi.org/10.22044/jme.2019.8521.1731

Abstract
  In layered and blocky rock slopes, toppling failure is a common mode of instability that may occur in mining engineering. If this type of slope failure occurs as a consequence of another type of failure, it is referred to as the secondary toppling failure. “Slide-head-toppling” is a type ...  Read More

Original Research Paper
13. Copper recovery from thickener overflow by electrocoagulation/flotation: optimization of response surface, modeling, and sludge study

A. Hasanzadeh_Sablouei; Seyed M. Moosavirad

Volume 10, Issue 4 , Autumn 2019, Pages 1013-1029

http://dx.doi.org/10.22044/jme.2019.8569.1737

Abstract
  The electrocoagulation/flotation process is a novel approach in mining industry that is implemented to return Cu metal to the production cycle, which improves copper recovery and reduces waste water. In this research work, the response surface methodology was applied to optimize the factors effective ...  Read More

Original Research Paper Rock Mechanics
14. Effect of segmental joint stiffness on tunnel lining internal forces under static conditions

Gh. H Ranjbar; K. Shahriar; K. Ahangari

Volume 10, Issue 4 , Autumn 2019, Pages 1031-1043

http://dx.doi.org/10.22044/jme.2019.8581.1738

Abstract
  According to the wide application of segmental lining in mechanized tunneling, recognizing the behavior of segmental lining joints is important in tunnels designing. In the structural analysis of the tunnel segmental lining, segmental joints can be considered as elastic joints, and their stiffness characteristics ...  Read More

Original Research Paper Exploitation
15. Analysis of reliability and maintainability for multiple repairable units (Case study: Sungun copper mine)

R. Razzaghzadeh; R. Shakoor Shahabi; A. Nouri Qarahasanlou

Volume 10, Issue 4 , Autumn 2019, Pages 1045-1059

http://dx.doi.org/10.22044/jme.2019.8646.1745

Abstract
  The appropriate operating of mining machines is affected by both the executive and environmental factors. Considering the effects and the related risks lead to a better understanding of the failures of such machines. This leads to a proper prediction of the reliability parameters of such machines. In ...  Read More

Original Research Paper Exploitation
16. Geostatistical and multi-fractal modeling of geological and geophysical characteristics in Ghalandar Skarn-Porphyry Cu Deposit, Iran

S. Salarian; O. Asghari; M. Abedi; S. K. Alilou

Volume 10, Issue 4 , Autumn 2019, Pages 1061-1081

http://dx.doi.org/10.22044/jme.2019.8687.1752

Abstract
  This work aims at figuring out the spatial relationships between the geophysical and geological models in a case study pertaining to copper-sulfide mineralization through an integrated 3D analysis of favorable target. The Ghalandar Skarn-Porphyry Cu Deposit, which is located in NW Iran, is selected for ...  Read More

Original Research Paper Mineral Processing
17. Solvent extraction and stripping of zinc from synthetic chloride solution in presence of manganese and cadmium as impurities

H. Jafari; H. Abdollahi; M. Gharabaghi; A.A. Balesini

Volume 10, Issue 4 , Autumn 2019, Pages 1083-1093

http://dx.doi.org/10.22044/jme.2019.8708.1755

Abstract
  In this research work, solvent extraction and stripping of zinc ions from a Zn-Mn-Cd-bearing solution was investigated using D2EHPA as the extractant in a chloride medium. The efficiency of the extraction and stripping stages was evaluated separately, and different parameters such as the pH, extractant ...  Read More

Original Research Paper Exploitation
18. Use of a mixed integer programming model to achieve an optimum size of blast block in open-pit mining with regard to size of mineable block using fuzzy logic approach

A. Mozafari; A. H. Bangian Tabrizi; M. Taji; A. Parhizkar

Volume 10, Issue 4 , Autumn 2019, Pages 1095-1104

http://dx.doi.org/10.22044/jme.2019.8786.1763

Abstract
  In this paper, we present an integrated model to find the optimum size of blast block that uses (i) a multi-criteria decision-making method to specify the applicable size of the mineable block; (ii) a linear programming method for the selection of the blasted areas to be excavated and in deciding the ...  Read More

Original Research Paper Rock Mechanics
19. Performance evaluation of chain saw machines for dimensional stones using feasibility of neural network models

J. Mohammadi; M. Ataei; R. Kakaie; R. Mikaeil; S. Shaffiee Haghshenas

Volume 10, Issue 4 , Autumn 2019, Pages 1105-1119

http://dx.doi.org/10.22044/jme.2018.7013.1542

Abstract
  Prediction of the production rate of the cutting dimensional stone process is crucial, especially when chain saw machines are used. The cutting dimensional rock process is generally a complex issue with numerous effective factors including variable and unreliable conditions of the rocks and cutting machines. ...  Read More

Original Research Paper Rock Mechanics
20. Fractal-wavelet-fusion-based re-ranking of joint roughness coefficients

M. Lotfi; B. Tokhmechi

Volume 10, Issue 4 , Autumn 2019, Pages 1121-1133

http://dx.doi.org/10.22044/jme.2019.7489.1614

Abstract
  Nowadays, Barton’s Joint Roughness Coefficients (JRC) are widely used as the index for roughness and as a challenging fracture property. When JRC ranking is the goal, deriving JRC from different fractal/wavelet procedures can be conflicting. Complexity increases when various rankings outcome from ...  Read More