A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Smoke spread calculations for fires in underground mines
This report is part of the research project “Concept for fire and smoke spread prevention in mines”, conducted by a research group at Mälardalen University.The project is aimed at improving fire safety in mines in order to obtain a safer working environment for the people working for the mining companies in Sweden or for visitors in mines open to the public.This report deals with the issue on smoke spread calculations for fires in underground mines.The main purposes of the report are:- Using both one- or two-dimensional calculation models as well as three-dimensional CFD calculation models.- Positioning the design fires (a pool fire, a fire in a loader, a fire in a loader in a sprinklered drift, a cable fire and a bus fire) at various sites with respect to for example the ventilation system.- Investigating the complexities of the various models, their limitations and deficiencies etc.- Comparing the results from the calculation models with each other and with experimental data where applicable and available.The work in this report started with describing smoke spread in underground mines in general and then continuing with describing three types of calculation models used in this report. After that calculations and simulations were conducted – using the three models – for the five designated design fire scenarios and the results were presented for strategic sites with respect to egress safety and the intervention of the fire and rescue services. The results from the CFD simulations were thereafter validated with respect to flame temperature and grid size convergence. It is misleading to fully compare the outputs of the three calculation models with each other without considering the differences and limitations of the three models as they are based upon different assumptions that differ considerably. For example the hand calculation expressions and the mine ventilation network simulation program assume unidirectional flow in the drifts compared with FDS that account for multi directional flows in the drifts. Also ...
Smoke spread calculations for fires in underground mines
This report is part of the research project “Concept for fire and smoke spread prevention in mines”, conducted by a research group at Mälardalen University.The project is aimed at improving fire safety in mines in order to obtain a safer working environment for the people working for the mining companies in Sweden or for visitors in mines open to the public.This report deals with the issue on smoke spread calculations for fires in underground mines.The main purposes of the report are:- Using both one- or two-dimensional calculation models as well as three-dimensional CFD calculation models.- Positioning the design fires (a pool fire, a fire in a loader, a fire in a loader in a sprinklered drift, a cable fire and a bus fire) at various sites with respect to for example the ventilation system.- Investigating the complexities of the various models, their limitations and deficiencies etc.- Comparing the results from the calculation models with each other and with experimental data where applicable and available.The work in this report started with describing smoke spread in underground mines in general and then continuing with describing three types of calculation models used in this report. After that calculations and simulations were conducted – using the three models – for the five designated design fire scenarios and the results were presented for strategic sites with respect to egress safety and the intervention of the fire and rescue services. The results from the CFD simulations were thereafter validated with respect to flame temperature and grid size convergence. It is misleading to fully compare the outputs of the three calculation models with each other without considering the differences and limitations of the three models as they are based upon different assumptions that differ considerably. For example the hand calculation expressions and the mine ventilation network simulation program assume unidirectional flow in the drifts compared with FDS that account for multi directional flows in the drifts. Also ...
Smoke spread calculations for fires in underground mines
Hansen, Rickard (author)
2010-01-01
2010:07
Paper
Electronic Resource
English
DDC:
624
Site Inventory of Operational Mines - fire an smoke spread in underground mines
| BASE | 2010
Fighting fires in underground mines
Tema Archive | 1984