Cel A numerical model was developed to calculate the air temperature in the roads at any given moment, taking into account the level of heat generated by the fire and heat exchanges with the ground.This numerical model was then linked to a previously developed program for calculating ventilation, which runs interactively on a microcomputer and displays the network and results on a colour graphics terminal.The resultant software, VENDIS-FS, therefore permits:- calculation of the ventilation in a mine- determination of the characteristics of a fire (position, force)- monitoring of the pattern of ventilation over time.While the model was being developed, a number of simplications were introduced to improve calculation times. What the program effectively does is to calculate the temperature in each section of the network and ventilation in the system as a whole at given intervals.Because of these (justifiable) simplications, it was necessary to test the model in real conditions, and then adjust it if necessary.Mine ventilation rates are calculated to ensure sufficiently low concentrations of fire damp and diesel fumes and to reduce the temperature.Fans are used to create a wind force in the ventilation network. The natural draught created by differences in air temperature between the inclined sections of the network is taken into account in the calculations.Quite apart from the local damage a mine fire can cause, it can also seriously disrupt ventilation when the hot gases spread into inclined workings. Hot toxic gases will not only enter the airways downstream of the fire, but, because the effect of the heat may reverse the airflow, they may also be drawn into areas which were initially upstream.It is extremely important for an operator to examine the potential disruption which a fire may cause to ventilation in the mine, so that all necessary measures can be taken to reduce the risks to a minimum.Various methods exist, both qualitative and quantitative, for estimating the extent of the disruption, but they are not very easily implemented and are not always entirely reliable.The aim of this project was to develop software for calculating mine ventilation and assessing the disruption caused by fire. Program(-y) ECSC-WORKSAFE C - First joint research programme (ECSC) "Safety in the European Coal and Steel Community industries", 1989-1993 Temat(-y) 2.1 - Mine fires and spontaneous combustion Zaproszenie do składania wniosków Data not available System finansowania Data not available Koordynator INERIS Wkład UE Brak danych Adres Parc Technologique ALATA 60550 Verneuil-en-Halatte Francja Zobacz na mapie Koszt całkowity Brak danych
