Study of physico-mechanical properties and methods for increasing the strength of concrete shaft supports under the influence of aggressive environmental factors
https://doi.org/10.21285/2686-9993-2026-49-1-2
EDN: OEIRQU
Abstract
There are various methods of supporting underground mine workings, each of these methods has a number of advantages and disadvantages. The most versatile method has proven to be the support that includes a concrete mixture (shotcrete and gunite – concrete support, reinforced concrete support, etc.). Today, many mines and mining operations use concrete mixtures to construct various structures in the conditions of underground mining, while mining enterprises often face the problem of concrete losing its strength characteristics during operation. The purpose of the study is to provide the most accurate assessment of concrete behavior under various aggressive environmental factors, such as thawing of the rock mass and the presence of aggressive waters at the support installation site. The paper also discusses possible methods for increasing strength and resistance to various destructive factors. The research included testing concrete for frost resistance, conducting electrolysis tests, adding various components to increase the strength of concrete samples, as well as comparing different concrete grades. The obtained results allowed to provide a more accurate assessment of the influence of negative factors on the physical and mechanical properties of concrete support, as well as to select an integrated approach to increasing the stability of support under various conditions of underground environment.
About the Authors
I. V. Perelygin
Irkutsk National Research Technical University
Russian Federation
Competing Interests:
Russian Federation
Ivan V. Perelygin, Student, Institute of Subsoil Use
Irkutsk
Competing Interests:
The authors declare no conflict of interests.
A. Yu. Bolotnev
Irkutsk National Research Technical University
Russian Federation
Competing Interests:
Russian Federation
Aleksandr Yu. Bolotnev, Cand. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Mineral Deposits Development, Institute of Subsoil Use
Irkutsk
Competing Interests:
The authors declare no conflict of interests.
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Review
For citations:
Perelygin I.V., Bolotnev A.Yu. Study of physico-mechanical properties and methods for increasing the strength of concrete shaft supports under the influence of aggressive environmental factors. Earth sciences and subsoil use. 2026;49(1):18-29. https://doi.org/10.21285/2686-9993-2026-49-1-2. EDN: OEIRQU
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