Risk analysis of an urban environment under explosive attacks in Tehran

Mohammad Hossein  Lashkari; Mehdi  Navidbakhsh; kambiz kangarloo

Annals of Military and Health Sciences Research

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Risk analysis of an urban environment under explosive attacks in Tehran

Author(s):

Mohammad Hossein Lashkari¹,

Mehdi Navidbakhsh²,

kambiz kangarloo^3,*

1Department of Surgery, AJA University of Medical Sciences, Tehran, Iran, Andorra

2School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran., Andorra

3Postdoctoral Researcher, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran, Andorra

Annals of Military and Health Sciences Research:Vol. 12, issue 4; e62989

Published online:Sep 30, 2014

Article type:Research Article

Received:Jun 17, 2014

Accepted:Aug 21, 2014

How to Cite:Mohammad Hossein LashkariMehdi Navidbakhshkambiz kangarlooRisk analysis of an urban environment under explosive attacks in Tehran.Ann Mil Health Sci Res.12(4):e62989.

Abstract

Materials and Methods: The first step in predicting blast effects on a target is to predict blast loads on it. In this study a computational fluid dynamics program and analytical methods developed by the Federal Emergency Management Agency (FEMA) were used to solve two and three dimensional air blast problems.

Results: Explosions in confined spaces (mines, buildings, large vehicles) which cause structural collapse are associated with greater morbidity and mortality. The reflected pressures for explosive detonations are two to thirteen times greater than peak incident pressures. A rough estimate of the total casualties following such events are the result of the composition and amount of involved materials, surrounding environment, delivery method, distance between the victim and the blast, crowd density and any intervening protective barriers or environmental hazards. Conclusion: The extent and severity of damage and injuries in an explosive event cannot be predicted with perfect certainty. Despite these uncertainties, it is possible to give some general indications of the overall level of damage and injuries to be expected in an explosive event based on the size of the explosion, distance from the event and assumptions about the construction of the building.

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