scholarly journals The process of closing dynamics applied to the ventilation network of Paroşeni mine

2020 ◽  
Vol 305 ◽  
pp. 00080
Author(s):  
Florin Rădoi ◽  
Doru Cioclea ◽  
Corneliu Boantă ◽  
Cristian Tomescu
Keyword(s):  
Real Time ◽  
Ventilation System ◽  
Ventilation Network ◽  
Real Time Visualization ◽  
Ventilation Networks

The decision to begin the process of closing/preserving a mining objective requires the analysis of a complex of factors that interact and influence the efficiency of decision. Solving the ventilation networks with the help of computing is a huge step forward that allows optimization of the air management and real-time visualization of network changes. The method of solving the ventilation network with the help of the computation, allows the modeling and solving of the ventilation networks as well as any simulations of changes that may occur in the ventilation system regardless of its complexity, during the closing period. This paper will present the process of closing dynamics in a complex ventilation network.

scholarly journals Influence of Applying Additional Forcing Fans for the Air Distribution in Ventilation Network

2016 ◽  
Vol 23 (3) ◽  
pp. 163-171
Author(s):  
Nikodem Szlązak ◽  
Dariusz Obracaj ◽  
Marek Korzec
Keyword(s):  
Ventilation System ◽  
Underground Mines ◽  
Air Distribution ◽  
Ventilation Network ◽  
Airflow Rate ◽  
Total Resistance ◽  
Subsurface Structure ◽  
Pull Systems ◽  
Underground Workings ◽  
Ventilation Networks

Abstract Mining progress in underground mines cause the ongoing movement of working areas. Consequently, it becomes necessary to adapt the ventilation network of a mine to direct airflow into newly-opened districts. For economic reasons, opening new fields is often achieved via underground workings. Length of primary intake and return routes increases and also increases the total resistance of a complex ventilation network. The development of a subsurface structure can make it necessary to change the air distribution in a ventilation network. Increasing airflow into newly-opened districts is necessary. In mines where extraction does not entail gas-related hazards, there is possibility of implementing a push-pull ventilation system in order to supplement airflows to newly developed mining fields. This is achieved by installing subsurface fan stations with forcing fans at the bottom of downcast shaft. In push-pull systems with multiple main fans, it is vital to select forcing fans with characteristic curves matching those of the existing exhaust fans to prevent undesirable mutual interaction. In complex ventilation networks it is necessary to calculate distribution of airflow (especially in networks with a large number of installed fans). In the article the influence of applying additional forcing fans for the air distribution in ventilation network for underground mine were considered. There are also analysed the extent of overpressure caused by the additional forcing fan in branches of the ventilation network (the operating range of additional forcing fan). Possibilities of increasing airflow rate in working areas were conducted.

scholarly journals Computer simulations in the ventilation network of the Vulcan Mine

2022 ◽  
Vol 354 ◽  
pp. 00050
Author(s):  
Corneliu Boantă ◽  
Cristian Tomescu
Keyword(s):  
Ventilation System ◽  
Health Conditions ◽  
Ventilation Network ◽  
Computing Technology ◽  
Calculation Technique ◽  
Safety And Health ◽  
Mineral Substance ◽  
Mining Works ◽  
Microclimate Conditions ◽  
Ventilation Networks

Maintaining safety and health conditions underground, especially where potentially explosive atmospheres are possible, depends mainly on how the ventilation system is built, applied and operated in the ventilation network. The ventilation networks of a mining unit for the exploitation of the useful mineral substance are mining works that aim to ensure optimal microclimate conditions in the underground. An ventilation network is built of nodes and branches, in order to establish its structure. In order to establish the optimal air flows at branch level, specialized programs are used, with the help of which the modeling, solving and optimization of the ventilation networks can be performed. Optimizing the management of the ventilation system involves in-depth and complex analyzes on the ventilation network that require a huge volume of data that can be processed only with the help of computing technology. The paper presents an analysis of the ventilation network of the Vulcan mine using the calculation technique to simulate situations that may occur in the ventilation system.

Dynamic Analytical Platform for Mine Ventilation Networks

2013 ◽  
Vol 295-298 ◽  
pp. 2940-2949
Author(s):  
Kun Li ◽  
Cui Ding ◽  
Chang Fu You
Keyword(s):  
Control Systems ◽  
Real Time ◽  
Mine Ventilation ◽  
Modeling Method ◽  
Additional Research ◽  
Ventilation Network ◽  
Accident Conditions ◽  
Real Time Simulations ◽  
Ventilation Networks ◽  
Ventilation Systems

Mine disasters frequently occur with serious consequences, so additional research is needed to effectively deal with mine disasters especially the secondary catastrophes. Modularization modeling method was used to develop the dynamic analytical platform for modeling mine ventilation networks. The platform includes models of the ventilation network and the control systems. A small experimental ventilation network was also constructed to validate the platform. The results show that the platform provides accurate real-time simulations of normal operations and accident conditions in the ventilation network. The platform accurately models dynamic spreading of the disaster in the lab with errors of around 5%. Thus, the platform can be used to analyze the mine ventilation systems during accidents and develop methods to prevent the secondary catastrophes and the deterioration of mine disasters.

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