Open AccessSafety of urban buildings near explosive objects
Author(s) -
Е. В. Бажина,
П. М. Бажин
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/869/7/072050
Subject(s) - explosive material , conservation law , conservation of energy , computer science , point (geometry) , object (grammar) , energy conservation , vulnerability (computing) , civil engineering , mathematics , engineering , computer security , geography , physics , geometry , mathematical analysis , archaeology , artificial intelligence , electrical engineering , thermodynamics
The article outlines the basic principles for choosing the most rational urban development near explosive urban facilities. The developed principles make it possible to minimize risks both for newly constructed and for constructed urban facilities located near energy-intensive industries. The following points must first be made. There are several possible options that are pursued in determining the security status of objects, people and territories adjacent to explosive objects. Firstly, it can be preliminary calculations for assessing safety zones, and secondly, the purpose of research can be to determine the degree of safety of a particular object located near the alleged source of an emergency explosion. For example, an oil refinery, which is energy-intensive and occupies a significant territory through which mechanisms and people move and on which industrial and auxiliary buildings are located. Let us turn to the methodology for calculating the dynamic characteristics at a certain point in the air medium disturbed by the explosion. The technique used is a difference analogue of the laws of conservation of mass and momentum. In this case, the entire computational domain is preliminarily divided into a certain number of computational cells in which the calculation of the parameters of the medium is carried out. The method used to calculate the parameters characterizing the interaction of compression waves with buildings and structures is based on a numerical scheme. Its essence is reduced to direct numerical integration of conservation laws in a differential form with the use of integral conservation laws. This method is known as the Godunov method and is used to solve non-stationary problems of hydrodynamics. The results of the calculation of the effect of compression waves on buildings during a deflagration emergency explosion at a nearby energy-consuming facility – fuel filling station (AZS) are considered.