scholarly journals Pre-incident planning of fires in underground hard rock mines: old and new risks

2021 ◽  
Vol 10.47389/36 (36.4) ◽  
pp. 68-74
Author(s):  
Rickard Hansen
Keyword(s):  
Information Sources ◽  
Planning Process ◽  
Underground Mines ◽  
Ventilation Network ◽  
Mine Fire ◽  
Design Fire ◽  
Fire Modelling ◽  
Fire Scenarios ◽  
Hard Rock Mines ◽  
Future Plans

Fires in underground mines may pose a challenge to fire and rescue personnel where the complex environment and multiple influences of a fire are poorly considered during pre-incident planning. A better knowledge of pre-incident planning in underground mines would improve the safety of personnel. This study on pre-incident planning in underground mines applied data from experiments, inventories and design fire studies. A number of questions were considered related to information sources, fire modelling, capturing complexity and using fire scenarios. When performing fire modelling, empirical models could be used to complement other modelling tools. The study found that for modelling of spatially extensive mine sections, the use of ventilation network-based mine fire simulations could be a better option. Using an analytical toolbox, an iterative testing of plans and an ongoing planning process, the pre-planning challenges for a mine can be mitigated. The purpose of this study was to examine existing pre-incident planning and propose information sources, tools and specific actions for future plans.

scholarly journals Possibilities For Simulating The Smoke Rollback Effect In Underground Mines Using Cfd Software / Možnosti Simulace Zpětného Proudění Kouře V Hlubinných Dolech Pomocí Cfd Softwaru

2014 ◽  
Vol 60 (2) ◽  
pp. 8-16 ◽  
Author(s):  
Vancho Adjiski
Keyword(s):  
Wide Spectrum ◽  
Research Paper ◽  
Underground Mines ◽  
Ventilation Network ◽  
Cfd Analysis ◽  
Smoke Spread ◽  
Fire Scenarios ◽  
Mine Section

Abstract The effect of fire generated smoke rollback in underground mines can be dangerous and a potentially fatal threat to all who are endangered by the fire. Three critical stages in the process of smoke rollback are 3D local phenomena that can be analysed by CFD software simulations. With the help of a 3D-CFD analysis we can observe the critical stages of smoke rollback and their reaction to a ventilation network. The CFD provides the opportunity to expand the range of prediction of smoke spread for a wide spectrum of airflows, fire intensities, mine-section inclinations and layouts. The paper deals with the possibilities for simulating the smoke rollback effect in underground mines using the CFD software. For the purposes of this research paper, the PyroSim software from the company Thunderhead Engineering was used to create three different CFD fire scenarios and then observe the critical stages of smoke rollback effects.

scholarly journals IPTEKS PERENCANAAN DAN REALISASI ANGGARAN PROGRAM KERJA PADA KELURAHAN SINGKIL II MANADO

2018 ◽  
Vol 2 (02) ◽  
Author(s):  
William Juan Wawointana ◽  
Federicky Manimbaga ◽  
Anneke Wangkar
Keyword(s):  
Qualitative Methods ◽  
Planning Process ◽  
Activity Budget ◽  
District Office ◽  
Budget Planning ◽  
Interview Method ◽  
Future Plans

This study aims to determine the planning process and realization of the activity budget at the Singkil 2 Manado sub-district office. data collected using the interview method. This type of research uses qualitative methods. planning and realization of the budget activities are prepared through MUSRENBANG and according to the community agreement also fits the 4 stages of preparation. Based on these results, the Singkil 2 sub-district requires the socialization of the results of future plans to the community regarding the central government's decision to realize the activity budget.Keywords :MUSRENBANG,budget planning, budget realization

Potential Insights from Performance-Based Design of Fire Protection in Tall Buildings

2019 ◽  
Author(s):  
Pierre Ghisbain ◽  
Jenny Sideri ◽  
Reyhaneh Abbasi ◽  
Luciana Balsamo ◽  
Reza Imani ◽  
...  
Keyword(s):  
Fire Protection ◽  
Mechanical Response ◽  
Tall Buildings ◽  
Element Model ◽  
Fire Effects ◽  
Design Fire ◽  
Fire Engineering ◽  
Fire Scenarios ◽  
Fire Loading ◽  
The Impact

<p>Analysis of the structural performance under realistic fire scenarios makes Performance Based Fire Engineering (PBFE) particularly suited to design fire protection of tall buildings. In this paper, the impact of using the PBFE method is studied using a standard tall building as an example. The parametric temperature- time curves recommended in Eurocode 1 are used to define the fire loads. The thermal and mechanical response of the building to the imposed fire loading is subsequently analyzed by means of a finite element model of the mixed-use tower. Particular care is devoted to analyzing the performance of a steel truss at a transfer level, to study potential global effects of a local fire, effects that are not studied or understood within the prescriptive design framework.</p>

scholarly journals Uncertainties Associated with Tunnel Design Fire Scenarios

2017 ◽  
Vol 192 ◽  
pp. 387-392 ◽  
Author(s):  
Matej Kadlic ◽  
Vladimír Mózer
Keyword(s):  
Design Fire ◽  
Fire Scenarios ◽  
Tunnel Design

Loosely-Specified Query Processing in Large-Scale Information Systems

1997 ◽  
Vol 06 (03n04) ◽  
pp. 241-268 ◽  
Author(s):  
Anisoara Nica ◽  
Elke A. Rundensteiner
Keyword(s):  
Query Processing ◽  
Information Integration ◽  
Digital Libraries ◽  
Large Scale ◽  
Information Sources ◽  
Planning Process ◽  
Search Space ◽  
Integration Model ◽  
The Individual ◽  
Query Planning

Challenging issues for processing queries specified over large-scale information spaces (for example, Digital Libraries or the World Wide Web) include the diversity of the information sources in terms of their structures, query interfaces and search capabilities, as well as the dynamics of sources continuously being added, removed or upgraded. In this paper, we give an innovative solution for query planning in such environments. The foundation of our solution is the Dynamic Information Integration Model (DIIM) which supports the specification of not only content but also capabilities of resources without requiring the establishment of a uniform integration schema. Besides the development of the DIIM model, contributions of this paper include: (1) the introduction of the notion of fully specified queries that are semantically equivalent to a loosely-specified query; (2) a translation algorithm of a loosely-specified query into a set of semantically equivalent feasible query plans that are consistent with the binding patterns of query templates of the individual sources (capability descriptions in DIIM) and with interrelationships between information sources (expressed as join constraints in DIIM); and (3) a search restriction algorithm for optimizing query processing by pruning the search space into the relevant subspace of a query. The plans obtained by the proposed query planning process which is composed of the search restriction and translation algorithms can be shown to correspond to query plans semantically equivalent to the initial loosely-specified input query.

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