Possible models of regional environmental and economic assessment of engineering and geological hazards impact on the stability of buildings and structures

The article presents the results of justification of analytical tools for calculating the regional ecological and economic assessment of engineering and geological hazards impact on the stability of buildings and structures. Methodological approaches to performing an economic assessment of the negative impact of an engineering and geological factor on the stability of buildings based on determining the amount of caused or potential damage are considered. It is established that such an assessment is advisable to carry out within the framework of "cost" approach to the real estate objects assessment (based on the book or replacement value of the building), supplemented by "scenario" and "geoecological" approaches to identifying existing engineering and geological threats. The definition of geoecological scenarios reflecting the options for negative impact of seismicity and dangerous exogenous geological processes (hazards) and their territorial combinations allows, in the first approximation, to circumvent the unresolved issues of probability of these threats realization and predicting the degree of damage or destruction of structures as a result. The regional geoecological scenarios we have developed and the assessment models created on this basis reflect almost all mutually exclusive options for the territorial combination of engineering and geological hazards in Ukraine. However, due to the lack of data on the actual damage at the regional level, it was necessary to limit ourselves to a simplified indirect assessment of the hypothetical possibility of damage to structures based on available cartographic materials. It was emphasized that only the accumulation of databases on engineering characteristics, engineering and geological conditions, damage by causes, balance sheet and market value, etc. for all existing structures and buildings can radically improve the state of affairs with the assessment at the regional level.