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DEVELOPMENT OF LITHOLOGIC AND PETROGRAPHIC AND PHYSICAL AND MECHANICAL CRITERIA FOR ASSESSING THE COMPLEXITY OF ENGINEERING AND GEOLOGICAL CONDITIONS

A. M. Akhunzhanov, E. Sh. Kurbanov, T. A. Gafurov, Zh. M. Boltоbаev

Institute of Hydrogeology and Engineering Geology, Tashkent, the Republic of Uzbekistan

The present paper deals with a relevance of the development of lithological and petrographic and physic and mechanical criteria for assessing the complexity of engineering and geological conditions of the deposit. Methods of analogy and analytical calculations can be used to solve issues concerned with an assessment of the deformation of mine workings with time. The rheological characteristics of the Central Kyzylkums geological formations and determination of engineering rock properties as a medium inclosing mining workings can be used in the long term to assess the seismic impact on buildings and constructions within a given territory. At wet grounds, the process proceeds more intensively than in other areas with equal geological, tectonic and mining conditions. Comprehensive analysis of conditions and factors causing engineering and geological difficulties was performed. Lithologic and petrographic, physic and mechanical and rheological criteria for assessing the complexity of engineering and geological conditions were determined. To predict the development of rock deformations with time, the average values of creep rock characteristics in the Central Kyzylkums and Donetsk-Makeevka geological and industrial region of Donbass were compared. Critical values of creep parameters and its degree for lithological rock varieties were given.

Keywords: lithology, petrography, physical and mechanical conditions, rheology, deformation, fracturing, creep parameters, elasticity, sustained rock strength, stability.

DOI 10.20403/2078-0575-2025-2-70-77

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