Computer Simulation of the Air Flow Distribution in Goaf Regarding the Use of Inert Gases and Chemical Agents
This paper presents the use of a computer method of the ventilation process simulation for the analysis of the flow distribution of air and gases in the area of wall mining work and the adjacent goaf. In workings and goaf, the complex issue of the formation of a gaseous atmosphere under variable ventilation conditions and an ex-isting fire hazard level, with the possibility of feeding goaf with an additional carbon dioxide flux as the inertizing agent is considered. Some examples of the simulation of feeding goaf with carbon dioxide illustrating the differ-ent patterns of the distribution of the goaf atmosphere gases concentration, said distribution patterns being gas supply place dependent, have been presented. In addition, the impact of the additional sealing of goaf on the dis-tribution level of the concentration of gases, the said sealing made from the wall side with chemical agents has al-so been considered. The capabilities of the VentGoaf computer simulation program, being the basis for our calcu-lations, enable consideration of the use of the inert gases supplied to the goaf depending on: the location of the gas feeding the pipe outlet, tightness of the fire field, fire centre location, and spatial situation of the mined wall. It has been found that fire prevention elements, such as chemical sealing agents, are of great impact on the effectiveness of fire prevention.
mine ventilation computer simulation inflow of methane and inert gases
WACLAW Dziurzynski STANISLAW Nawrat
Strata Mechanics Institute of the Polish Academy of Sciences, Krakow, Poland AGH University of Science and Technology, Krakow, Poland
国际会议
The 2nd International Conference on Mine Safety and Environment Protection(第二届采矿、安全与环境保护国际会议)
西安
英文
5-10
2011-10-10（万方平台首次上网日期，不代表论文的发表时间）