Forthcoming and Online First Articles

International Journal of Mining and Mineral Engineering

International Journal of Mining and Mineral Engineering (IJMME)

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International Journal of Mining and Mineral Engineering (4 papers in press)

Regular Issues

  • Geotechnical aspects in the design of tailing dams   Order a copy of this article
    by Juan Sandino Sanabria Perez, Alberto Jaime Paredes 
    Abstract: The main objective of this work is to make a synthesis of the geotechnical aspects related to the storage of mining waste. Besides, to give a brief overview of tailings dam failures. Considering different loading conditions to which they were subjected to during the different stages of the mining operation, design, operation, closure, and post closure. The tailings must be characterised to know their physical, chemical, and mechanical behaviour in order to determine the necessary parameters for the design of the deposit. Furthermore, a case history of a tailings dam located in Peru is depicted considering seepage and slope stability behaviour. Finally, comments and conclusions of this investigation are presented.
    Keywords: geotechnical; ore; mineral; mining; tailing; waste rocks; dams; slope stability; monitoring; behaviour.
    DOI: 10.1504/IJMME.2023.10059712
     
  • A Review Study of Thermal Conductivity and Influencing Physico-mechanical Properties of Rocks   Order a copy of this article
    by Gurram Dileep, Anup Tripathi, Ch.S.N Murthy, Samir Kumar Pal 
    Abstract: Geothermal exploration and heat flow studies rely heavily on rock’s thermal conductivity, and it controls the subsurface temperature distribution. A broad study of rock thermal properties has become progressively indispensable for geotechnical, civil, mining, and tunnel engineers. The thermal properties of rocks are essential to the ground modification technique of geothermal heat pumps, environmentally conscious projects like dumping high-level nuclear waste in underground sites, and a wide range of engineering projects. The steady-state technique is commonly employed for homogeneous materials, providing a more precise thermal conductivity value despite longer testing times. Conversely, the transient technique is preferred for heterogeneous materials with moisture content, considering this factor but requiring multiple tests to achieve accurate results. This paper explores the predominant approaches used to measure rock thermal conductivity and identify the factors that influence it. Additionally, researchers present a generic equation for predicting the thermal conductivity of rocks using data they have gathered. According to this article, the thermal conductivity of rocks is influenced by several factors such as porosity, density, pressure, moisture content, variations in mineral composition, temperature, and more.
    Keywords: thermal conductivity; rock; heat transfer; porosity; density; temperature.
    DOI: 10.1504/IJMME.2023.10059738
     
  • An Experimental Study on Rock Samples Related to the Zojila Tunnel Region in Kashmir (North-West) Himalaya, India to Estimate Rock Geo-Engineering Properties.   Order a copy of this article
    by AASIF AHAD, Kaiser Bukhari 
    Abstract: The physical and mechanical properties of rocks play a decisive role in the design of underground structures, including tunnels. In the present study, petro-graphic and petro-fabric analysis of two types of rocks (phyllite and granite) was carried out, which were collected from the under-construction Zojila tunnel and its adjacent region Kargil of the Kashmir Himalaya. Laboratory tests were carried out to examine the physico-mechanical properties and geo-engineering characteristics of the rocks. The main result of the work is the authentication that ultrasonic pulse velocity can be used as a straightforward and affordable non-destructive method for an initial prediction of mechanical and physical properties as well as a tool for the evaluation of the weathering changes of granites. The results signify that the tunnels in the Kashmir Himalayan fold belt are stable, but need a very careful geological and geotechnical investigation which is in good agreement with the field observation (Dhang Pratap Chandra, 2016).
    Keywords: rock classification; SEM; phyllite; granite; Zojila tunnel; compressive strength; mechanical properties; India.
    DOI: 10.1504/IJMME.2023.10059901
     
  • Development of A Calibration Procedure for Rock Testing in Particle Flow Code (PFC) Simulations   Order a copy of this article
    by Lapone Techapinyawat, S.J. Jung, Ahmad M. Abu Abdo 
    Abstract: The overall behaviour of rock mass is effectively controlled by the micro properties of its constituent particles and the bonds between the particles. Unfortunately, the micro-scale properties are challenging to measure with standard laboratory tests. This study investigated the influence of these micro-scale bonding properties on typical parameters. This research provided a parametric study of four bond parameters: 1) normal to shear stress ratio (kratio); 2) tensile strength (fj_ten); 3) effective modulus (emod); 4) cohesion (fj_coh). These selected parameters should be adjusted and calibrated first to match lab tests. The procedure for generating material for flat-joint models should start with adjusting the four bond parameters; 1) kratio to synchronise the materials Poissons ratio; 2) fj_ten to synchronise the materials tensile strength; 3) emod to synchronise the materials Youngs modulus; 4) fj_coh to synchronise the materials compressive strength. This procedure was most effective because the last parameters calibration does not affect the previously calibrated parameters. Based on the results, a systematic procedure was developed to facilitate easy calibration of PFC2D models to match laboratory testing results.
    Keywords: bond parameters; discrete element method; DEM; macro properties; micro properties; particle flow code; PFC; simulation; rock properties.
    DOI: 10.1504/IJMME.2023.10059903
     

 

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