scholarly journals Identification of zones of influence of exogenous fire damaging factors

2020 ◽  
Vol 168 ◽  
pp. 00049
Author(s):  
Ivan Kokoulin ◽  
Tetiana Bunko ◽  
Ihor Yashchenko ◽  
Ruslan Papirnyk ◽  
Anatolii Belikov ◽  
...  

In this work, topological configuration of dangerous zone in the mine ventilation network and concentrations of fire gases in it are estimated and identified at vent impacting on the emergency conditions. The obtained information on gas-dynamic state of the mine ventilation network at a current moment of time is used for undertaking primary measures according to the plan of accident response: emergency evacuation of people and actions of militarized mine-rescue services for eliminating emergency at its initial stage with taking into account changed emergency ventilation mode. The proposed method allows identifying an area in the mine contaminated by combustion products with taking into account time of its formation, changes in ventilation mode during the accident and possible air stream reversal in zones with descentional ventilation under the influence of the fire source depression and formation of zones with fire gas recirculation. With implementation of this method, it becomes possible to improve accuracy of detecting gassy zones in the ventilation network and effectiveness of emergency response.

2019 ◽  
Vol 29 (4) ◽  
pp. 585-590 ◽  
Author(s):  
Andrzej Walentek ◽  
Tomasz Janoszek ◽  
Stanisław Prusek ◽  
Aleksander Wrana

2013 ◽  
Vol 423-426 ◽  
pp. 2291-2296
Author(s):  
Wei Wei Ye ◽  
Xian Ping Xie ◽  
Meng Wei Han ◽  
Shi Yun Luo ◽  
Zhen Li ◽  
...  

Selecting the optimal air regulation scheme of mine ventilation network, the essence is to choose the network a most optimal tree and obtain the corresponding optimal cosine tree combination program.Due to a synthetic consideration of the influence of production.Management economy and other aspects on the tree selection,the air flow regulating and controlling system made by the authors is optimum It is satisfactory to use the model for the north part ventilation system of Laochang tin mine of Yunnan tin Industrial crop. It is of practical significance to combine organically air flow regulating and controlling system with mine ventilation system.


2014 ◽  
Vol 84 ◽  
pp. 752-757 ◽  
Author(s):  
Luo Wengui ◽  
Xie Xianping ◽  
Xiao Houzao ◽  
Cui Chao ◽  
Yin Xiaoyu ◽  
...  

2019 ◽  
Vol 2 (4) ◽  
pp. 212-219
Author(s):  
Stanislav Pavlov

In the work study results of influence of typical working junction angle on amount changing of local aerodynamic resistances when air flows in different directions is represented. Using finite-element software, aerodynamic parameters of elements of mine ventilation network is obtained and is compared with analytical calculations Interinfluence local aerodynamic resistances located at ventilation network consecutively in normal and reversing behavior is discovered. It allows to increase accuracy of calculation of mine ventilation network at emergency ventilation operation.


2014 ◽  
pp. 106-116
Author(s):  
Iryna Turchenko ◽  
Volodymyr Kochan ◽  
Anatoly Sachenko

Static and dynamic simulation models of a section of a mine ventilation network in order to research a sequential neural control scheme of mine airflow are developed in this paper. The techniques of neural network training set creation for both simulation models, a structure of neural network and its training algorithm are described. The simulation modeling results using static and dynamic models have showed good potential capabilities of neural control approach.


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