DEVELOPMENT OF AN INFORMATION AND LOGIC MODEL FOR PREVENTING EMERGENCIES DUE TO IMPACT ON PROTECTIVE ELEMENTS OF SMALL SHELTER FACILITIES BY SHOCK AND IMPULSE LOAD

Abstract

The article examines problems of preventing emergencies due to damage to small shelter facilities caused by the impact of unmanned aerial vehicles (UAVs), which, in turn, leads to shock-impulse loading of their upper hemisphere and the following destruction.

The development of a civilian protection system against terrorist attacks on civilian infrastructure in the form of an extensive network of small shelter facilities increases the level of individual and collective protection of the population, especially in cities that fall within the area of enemy missile and artillery strikes.

Therefore, when designing and building settlements, it is necessary to provide for the possibility of protecting the civilian population from both shrapnel-type damage, which already has a practical implementation in existing projects, and from possible high-precision destruction of the upper hemisphere of small shelter facilities by a UAV warhead of high explosive or thermobaric type. Relevant design solutions should focus on preventing terrorist emergencies due to shock-impulse loading of the upper hemisphere of small shelters, which is formed by considering the information-logic model for preventing local-level emergencies due to shock-impulse loading of small shelter facilities.

The information-logic model assumes the existence of two security management loops for a small shelter: external and internal. It is worth noting that the external loop is an integral part of the overall urban (regional) air defence system and includes the block of measures to directly affect the threat (striking UAV) in the form of firearms and electronic warfare. The result of the successful development of management decisions by the external control loop is eliminating the threat of an enemy attack UAV. On the other hand, the experience and individual elements of the UAV are the basis for the formation of initial conditions of the mathematical model for preventing terrorist emergencies due to the shock and impulse load of small shelter facilities. The initial conditions represent the result of the development of two consecutive blocks: a block for collecting UAV characteristics and a block for analysing the shock-impulse load that occurs or is predicted based on the characteristics of the attacking UAV.

The basis of the internal control loop is the mitigation design unit, which determines further information exchange within this loop. In particular, it triggers the block for improving the effectiveness of protection, which receives statistical and predictive information on emergencies that have occurred (nature of damage and consequences). It allows for continuous updating of information on the characteristics of construction materials used in the construction of shelter facilities and the effectiveness of design solutions, forming characteristics of a small shelter. The result of the corresponding block is the formation of boundary conditions of the mathematical model for preventing terrorist emergencies due to the shock and impulse loading of small shelters. The basis of the block for forming the coupling equation of the mathematical model for preventing terrorist emergencies due to shock-impulse loading of small shelter facilities is the theoretical and practical achievements of the theory of reliability and its derivative theory of plasticity. An appropriate solution to the problem of preventing terrorist emergencies due to shock and impulse loading of small shelter facilities allows further implementation of management decisions to improve the efficiency of protection.

Thus, the study solved an urgent scientific problem, namely, the formation of an information-logical model for the prevention of local-level emergencies due to shock-impulse loading of small shelter facilities, the implementation of which allows to form management decisions to improve the security of small shelters and is the basis for further development of an appropriate mathematical model and methodology.