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Proposed design fire scenarios for underground hard rock mines

Hansen Rickard

Journal of Sustainable Mining

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2022

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Vol. 21, iss. 4

261--277

EN

Given the complexity and uniqueness of underground hard rock mines, the application of the design fire scenario approach is recommended when evaluating fire safety in mines. Providing a full set of design fire scenarios – ensuring that several important life safety aspects are covered – for a mine can be challenging. The question is whether a catalogue of potential clusters of design fire scenarios could be developed, covering important aspects found underground? Given the general lack of research into design fires in the mining industry, this paper provides a unique analysis of design fire scenarios in underground hard rock mines. Taking advantage of several different and diverse data sources, a comprehensive analysis with holistic character is provided where several proposed clusters of design fire scenarios and analyses of what criteria to apply when evaluating the scenarios are presented. The analysis of suitable criteria highlights the toxicity of the emitted smoke and decrease in visibility as potential criteria underground. The proposed scenarios focus on influencing parameters such as the fire behaviour, position of fire, fire load, and smoke spread. The proposed clusters of design fire scenarios will provide a key tool when evaluating fire protection measures in an underground mine.

2

Design of fire scenarios for Australian underground hard rock mines - Applying data from full-scale fire experiments

Hansen Rickard

Journal of Sustainable Mining

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2019

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Vol. 18, iss. 4

163--173

EN

One of the most significant tools when designing fire safety in an underground mine is the design fire methodology. This paper presents a number of design fire scenarios which were developed from risk assessments and risk analysis where a deterministic approach was implemented and where the results from earlier full-scale fire experiments in underground mines and analysis were included in the process. The developed scenarios showed that for scenarios, in which ventilation flow was in the same direction as the fuel continuity, continued fire spread to all major components were provided and longer and intermittent periods which resulted in high heat release rates resulted, would present a considerable risk to underground personnel. It was also found that the inclination of the decline has little influence on the resulting heat release rate - despite the flame tilt - and that the design of the mining vehicles was found to effectively delay or even prevent the ignition of adjacent fuel items in a number of cases. The design fire scenarios developed will provide a key tool when evaluating fire protection measures in an underground mine.

3

Projektowanie konstrukcji budowlanych z uwagi na warunki pożarowe jako podstawa bezpieczeństwa ludzi i mienia w czasie pożaru obiektu budowlanego

Grabias M., Halicka A., Snela M., Szerafin J.

Budownictwo i Architektura

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2016

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Vol. 15, nr 3

21--28

PL

W artykule przedstawiono istotę i podstawy metod projektowania konstrukcji budowlanych z uwagi na warunki pożarowe. Wskazano na wpływ temperatur pożarowych na powstanie dodatkowych oddziaływań oraz na zmiany parametrów materiałowych przekroju. Zwrócono uwagę na specyfikę zachowania się konstrukcji żelbetowych, murowych, stalowych i drewnianych w warunkach pożaru.

EN

In the paper the ideas and basics of methods for designing of building structures under the fire conditions are presented. The influence of fire temperatures on the occurrence of additional actions on the one hand and the changes in material parameters on the other hand is mentioned. The attention is paid to specific behaviour of concrete, masonry, timber and steel structures in fire.