resarПриродные ресурсы Арктики и СубарктикиArctic and Subarctic Natural Resources2618-97122686-9683Академия наук Республики Саха (Якутия)10.31242/2618-9712-2025-30-2-220-230resar-930Research ArticleНауки о Земле. Инженерная геология, мерзлотоведение и грунтоведениеEarth sciences. Engineering geology, permafrost and soil scienceВлияние условий водонасыщения на прочность карбонатных пород при сжатииInfluence of water saturation conditions on the compressive strength of carbonate rockshttps://orcid.org/0000-0003-0200-0429СукнёвС. В.SuknevS. V.

СУКНЁВ Сергей Викторович, доктор технических наук, главный научный сотрудник

ResearcherID: S-7251-2016, Scopus Author ID: 6602361450

г. Якутск

SUKNEV, Sergey Victorovich, Dr. Sci. (Eng.), Chief Researcher

ResearcherID: S-7251-2016, Scopus Author ID: 6602361450

Yakutsk

suknyov@igds.ysn.ruИнститут горного дела Севера им. Н.В. Черского СО РАНРоссияChersky Mining Institute of the North, Siberian Branch of the Russian Academy of SciencesRussian Federation202509072025302220230Copyright © Сукнёв С.В., 20252025Сукнёв С.В.Suknev S.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://resar.elpub.ru/jour/article/view/930

Изучение влияния воды на механические свойства горных пород необходимо для практики их разработки, в частности, при добыче полезных ископаемых, сооружении плотин, прокладывании туннелей, захоронении отходов. Присутствие воды в поровом пространстве материала наряду с наличием самих пор, трещин, каверн оказывает существенное влияние на механические свойства материала. Представлены результаты экспериментального исследования влияния условий водонасыщения на прочность при сжатии образцов доломита и известняка, представляющих вмещающие породы на месторождениях алмазов трубки «Ботуобинская» и трубки «Дальняя». В соответствии с разработанной методикой исследования осуществлен выбор режимов водонасыщения и проведены механические испытания образцов, насыщенных до определенного уровня и затем выдержанных в течение различного времени. По результатам трех серий испытаний построены зависимости прочности доломита при сжатии от времени выдержки и установлено существенное влияние времени выдержки на прочность материала, которое может приводить как к снижению, так и к увеличению прочности. Высказана гипотеза о том, что такое поведение материала связано с неравномерным распределением влаги и образованием «сухого» ядра в образце. Показано, что в рамках модели «сухого» ядра в материале могут быть реализованы различные сценарии разрушения, и это отразится на характере зависимости прочности образца от времени выдержки во влажном состоянии, включая ее немонотонное поведение. Полученные результаты имеют не только фундаментальное значение для понимания и соответствующего описания механизмов воздействия воды на породу, но также и практическое значение для оценки устойчивости и длительной прочности обводненных горных выработок.

The investigation into the influence of water on the mechanical properties of rocks is essential for their effective application in various fields, particularly in mining, dam construction, tunneling, and waste management. The presence of water within the pore spaces of geological materials, along with the existence of pores, cracks, and voids, plays a significant role in determining their mechanical characteristics. This study presents the results of an experimental investigation into the effects of water saturation conditions on the compressive strength of dolomite and limestone specimens, which are recognized as host rocks in the diamond deposits found in the Botuobinskaya and Dalnaya tubes. Following established research methodologies, specific water saturation regimes were selected, and mechanical tests were conducted on specimens that were saturated to predetermined levels and subsequently maintained for varying durations. The results from the three series of tests revealed the dependence of the compressive strength of dolomite on the duration of holding time. A significant effect of holding time on the material’s strength was observed, indicating that it can lead to both a decrease and an increase in strength. This phenomenon is hypothesized to be associated with a non-homogeneous distribution of water and the development of a “dry” core within the specimen. The analysis indicates that, within the framework of the “dry” core model, various fracture scenarios may develop within the material. These scenarios will affect the nature of the dependence of the specimen’s strength on holding time in a wet condition, including its non-monotonic behavior. The findings are not only fundamentally important for advancing the understanding and accurate description of the mechanisms of water interaction with rock but also have practical implications for assessing the stability and long-term durability of flooded mine workings.

известнякдоломитусловия насыщениясодержание водыодноосное сжатиепрочностьlimestonedolomitesaturation conditionswater contentuniaxial compressionstrengthРабота выполнена в рамках государственного задания ИГДС СО РАН «Исследование поведения геоматериалов при воздействии знакопеременных температурных полей, особенностей теплофизических, аэрогазодинамических и геомеханических процессов в горных выработках и массивах пород при разработке месторождений твердых полезных ископаемых криолитозоны» (проект № FWRS-2021-0021) с использованием научного оборудования ЦКП ФИЦ ЯНЦ СО РАН.This study was conducted within the framework of the state assignment for the Chersky Mining Institute of the North SB RAS, titled “An examination of the response of geomaterials to alternating temperature fields, thermophysical, aerogasdynamic, and geomechanical processes in mining operations and rock formations during the extraction of solid mineral deposits in the Cryolithozone.” This project (No. FWRS-2021-00210) used the scientific equipment available at the Core Shared Research Facilities of the Federal Research Centre “The Yakut Scientific Centre of the Siberian Branch of the Russian Academy of Sciences”.ReferencesErguler Z.A., Ulusay R. 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The authors declare that there are no conflicts of interest present.