Geology, geography and global energy

Scientific and Technical Journal

GEOECOLOGICAL ASSESSMENT OF LOESS ROCKS BETWEEN THE RIVERS PRUT-DNIESTER

2020. №1, pp. 163-172

Olyansky Yuri I. - Volgograd State Technical University, olyansk@list.ru

Shchekochikhina Evgeniya V. - Volgograd State Technical University, Evg-chek@yandex.ru

Serebryakov Oleg I. - Astrakhan State University, geologi2007@yandex.ru

The problems of loess rocks have been worked out in detail, thanks to the research of several generations of geologists, soil scientists and builders involved in the design of exploration works. Currently, there is a sufficient amount of regulatory literature on the preparation of subsidence rocks and general guidelines for the design of engineering structures. Nevertheless, in the scientific literature there is often information about the deformations of structures erected on loess subsidence rocks, even though their design and construction was carried out strictly according to the requirements of building documentation developed taking into account current regulations and standards. Such deformations at the end of the previous century took place in Rostov - on - Don, Atommash (Volgodonsk), Dnepropetrovsk, Nikopol (Dnepropetrovsk region), Zaporozhye, and also Chisinau and Bender (Moldova). One of the reasons for this is the ability of loess rocks to condense when filtering water through them, which is commonly called post - subsidence compaction. Until recently, its magnitude was of interest only to specialists involved in the design and construction of hydraulic and land reclamation facilities on loess rocks. However, the numerous problems that arise with the sustainability of industrial - civil structures, dictate the urgent need to take into account this component, the magnitude of the general deformation of loess bases when they are soaked due to accidental leaks or flooding of the territory. Based on the analysis of the results of our own research, data on the composition, physico - mechanical properties, subsidence and post - subsidence compaction of loess rocks of engineering - geological regions and regions of the territory of Moldova are given. To predict the magnitude of post - drawdown compaction, the method of probability analogies is recommended. The map of typological geological zoning of the described territory is made

Key words: лессовые породы, просадочность, послепросадочное уплотнение, инженерногеологическое районирование, формула Байеса, вероятностные аналогии, loess rocks, subsidence, postsubsidence compaction, engineeringgeological zoning, Bayes formula, probabilistic analo

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