Energy-saving mine ventilation

Kazakov, B. P.; Shalimov, A. V.; Kiryakov, A. S.

doi:10.1134/s1062739149030155

Cited by 12 publications

(8 citation statements)

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“…The systems make it possible to regulate the volume of air supplied to the mine depending on current needs and, as a result, reduce the energy consumption of fans [4,5]. The following requirements apply to AVCS [6]:…”

Section: Introductionmentioning

confidence: 99%

Strategy of mine ventilation control in optimal mode using fuzzy logic controllers

Kashnikov

Kruglov

2023

PMI

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The issues related to improving the efficiency of automatic ventilation control systems of mines that regulate the air supply to the mine in accordance with the need are considered. During the tests of such a system in the 3RU mine of OAO Belaruskali, the shortcomings of its existing, implementation, associated with the incorrect choice of the most difficult-to-ventilate direction, were revealed. The possibilities of implementing a control strategy, in which the system automatically determines the optimal configuration of the operating modes of fans and regulators, are demonstrated. As an alternative to the implemented algorithms, it is proposed to use a fuzzy control device to account for the nonlinearity of the dependence of the input and output parameters of ventilation equipment and to set the conditions for the optimal operating mode of the system in a declarative form. To assess the effectiveness of the proposed approach, the data of simulation modeling of the current ventilation mode and the transition from one ventilation mode to another are analyzed with comparison with the actual data of the system operation. The simulation results show that the use of an upgraded control scheme for the main ventilation fan based on fuzzy logic in the implementation of automatic ventilation control systems makes it possible to eliminate the possibility of a shortage of fresh air in the regulated directions of its movement, as well as excessive power consumption of the main ventilation fan.

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Section: Introductionmentioning

confidence: 99%

Strategy of mine ventilation control in optimal mode using fuzzy logic controllers

Kashnikov

Kruglov

2023

PMI

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“…Knowing the ventilation characteristics is crucial for determining the most effective ventilation circuit and for enhancing the efficiency ratios and saving energy, especially with the trend toward deeper ore deposits and gradually decreasing ore grades (Kazakov, Shalimov, and Kiryakov, 2013;Sasmito et al, 2013;du Plessis, Marx, and Nell, 2014;Hurtado et al, 2014;Develo, Pillalamarry, and Garab, 2016). Airway characteristics and obstacles (e.g., conveyors, machines, or other equipment) determine the airflow behaviour and the resistance the mine presents to airflow.…”

Section: Introductionmentioning

confidence: 99%

Ventilation friction factor determination and comparison: Two case studies of potash mining

Bascompta

Pera

Anticoi

et al. 2019

J. S. Afr. Inst. Min. Metall.

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Friction factor is a crucial parameter in assessing and modelling ventilation systems in underground mining. However, the development of a mine along its life-cycle can complicate the airflow supply required at the working faces, creating setbacks in terms of productivity and production. Hence, it is very important to determine all the ventilation parameters, including roughness and the friction factor. In this paper we examine the data from several surveys that were carried out in two potash mines (both using the room-and-pillar method) with the aim of determining the friction factors through the Von Kármán equation, which connects the Atkinson friction factor with airway roughness. Comparison of the two mines provided consistent results, despite some differences in the mining methods, and we were able to establish standard values for this type of mining. Furthermore, a roughness variation over a year in this type of evaporitic mining has been determined, indicating that the specific climate characteristics of the zone affect the walls and roofs of the tunnels and therefore their roughness. Friction factor values have also been validated by means of several ventilation simulations and contrasted with values in the literature.

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“…These fans enable the supply of fresh air and the extraction of dust and gases resulting from underground operations, such as blasting and the mining, loading, and transport of ore. The required amount of air flows and, hence, the consequent size of these fans depend on three major factors: the concentration of solid airborne particles, the temperature of the air, and the presence of gases which may be flammable or harmful to health [1]. The orientation of the blades and the rotation speed of the rotor have a significant influence on the air flow and the performance of the fan [2].…”

Section: Introductionmentioning

confidence: 99%

A Trade-Off between Mechanical Strength and Erosive Wear Resistance in AlSi12CuMgNi Alloy Used to Manufacture Fan Blades for Underground Mines

Álvarez-Antolín

Segurado-Frutos

González-Pociño

et al. 2019

Metals

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The axial fan blades used in underground mines are usually manufactured in AlSi12CuMgNi alloy (EN AC 48000). They must have a high mechanical strength to withstand the stresses resulting from the rotation speed of the rotor and a high resistance to erosive wear caused by suspended particles from underground mining and transport operations. The aim of this paper is to determine the most suitable thermal treatment to simultaneously improve their mechanical strength and erosive wear resistance. To this end, two solution treatments at 525 °C with cooling in water were analysed, as well as several ageing times at 170 °C. The crystalline phases present in the as-cast state were quantified by X-ray diffraction following quenching and different ageing processes. Furthermore, erosion wear resistance was measured by means of compressed air blasting with corundum particles according to ASTM G76 (2004). The highest wear resistance was obtained in the as-cast state using gravity die casting, with the presence of Al4Cu2Mg8Si7 and Al3CuNi. This wear resistance was higher than that obtained after the ageing treatment. However, a trade-off between mechanical strength and wear resistance was observed after 12 h ageing, where the hardness obtained exceeded 160 HV and the wear resistance became similar to that obtained in the as-cast state.

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Energy-saving mine ventilation

Cited by 12 publications

References 0 publications

Strategy of mine ventilation control in optimal mode using fuzzy logic controllers

Strategy of mine ventilation control in optimal mode using fuzzy logic controllers

Ventilation friction factor determination and comparison: Two case studies of potash mining

A Trade-Off between Mechanical Strength and Erosive Wear Resistance in AlSi12CuMgNi Alloy Used to Manufacture Fan Blades for Underground Mines

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