Presence of fine dust in air causes serious health hazard for mine operators resulting in such serious problems as coal workers’pneumoconiosis and silicosis.Major sources of dust appear of course along the mining fac...Presence of fine dust in air causes serious health hazard for mine operators resulting in such serious problems as coal workers’pneumoconiosis and silicosis.Major sources of dust appear of course along the mining face where the minerals are extracted.Proper control and management are required to ensure safe working environment in the mine.Here,we utilize the computational fluid dynamic(CFD)approach to evaluate various methods used for mitigating dust dispersion from the mining face and for ensuring safe level of dust concentration in the mine tunnel for safety of the operators.The methods used include:application of blowing and exhaust fans,application of brattice and combination of both.The results suggest that among the examined methods,implementation of appropriately located brattice to direct the flow from the main shaft to the mining face is the most effective method to direct dust particles away from the mining face.展开更多
The author presents the results being the effect of the analysis of innovative rate of individual technologies applied in opening up,development and extraction works which was carried out within the project:"scen...The author presents the results being the effect of the analysis of innovative rate of individual technologies applied in opening up,development and extraction works which was carried out within the project:"scenarios of technological development of hard coal extractive industry".After presentation of opening up,development and extraction technologies that are applied in Polish hard coal industry and their classification with regard to innovation degree the author describes those technologies in a detailed manner.He brings attention to the most effective systems for hard coal deposits’ opening up,development and their extraction,including the extraction of the residual coal.The attention is also paid to the safety level of the applied technologies.展开更多
基金financially supported by the Singapore Economic Development Board (EDB) through Minerals Metals and Materials Technology Centre (M3TC) (No.R261501013414)
文摘Presence of fine dust in air causes serious health hazard for mine operators resulting in such serious problems as coal workers’pneumoconiosis and silicosis.Major sources of dust appear of course along the mining face where the minerals are extracted.Proper control and management are required to ensure safe working environment in the mine.Here,we utilize the computational fluid dynamic(CFD)approach to evaluate various methods used for mitigating dust dispersion from the mining face and for ensuring safe level of dust concentration in the mine tunnel for safety of the operators.The methods used include:application of blowing and exhaust fans,application of brattice and combination of both.The results suggest that among the examined methods,implementation of appropriately located brattice to direct the flow from the main shaft to the mining face is the most effective method to direct dust particles away from the mining face.
文摘The author presents the results being the effect of the analysis of innovative rate of individual technologies applied in opening up,development and extraction works which was carried out within the project:"scenarios of technological development of hard coal extractive industry".After presentation of opening up,development and extraction technologies that are applied in Polish hard coal industry and their classification with regard to innovation degree the author describes those technologies in a detailed manner.He brings attention to the most effective systems for hard coal deposits’ opening up,development and their extraction,including the extraction of the residual coal.The attention is also paid to the safety level of the applied technologies.
