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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Structural Mechanics of Engineering Constructions and Buildings</journal-id><journal-title-group><journal-title xml:lang="en">Structural Mechanics of Engineering Constructions and Buildings</journal-title><trans-title-group xml:lang="ru"><trans-title>Строительная механика инженерных конструкций и сооружений</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1815-5235</issn><issn publication-format="electronic">2587-8700</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">46168</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2025-21-3-207-215</article-id><article-id pub-id-type="edn">SUEUSV</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Analytical and numerical methods of analysis of structures</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Аналитические и численные методы расчета конструкций</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Seepage and Stability of an Earth Dam under the Condition of Rainfall Infiltration</article-title><trans-title-group xml:lang="ru"><trans-title>Фильтрация и устойчивость грунтовой плотины при просачивании дождевой воды</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-8298-9971</contrib-id><name-alternatives><name xml:lang="en"><surname>Nguyen</surname><given-names>Hoang P.T.</given-names></name><name xml:lang="ru"><surname>Нгуен</surname><given-names>Хоанг Фуонг Тхао</given-names></name></name-alternatives><bio xml:lang="en"><p>Member, Department of Hydroelectric Power Engineering</p></bio><bio xml:lang="ru"><p>сотрудник департамента гидроэнергетических сооружений</p></bio><email>thaonhp@pecc3.com.vn</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4928-6236</contrib-id><name-alternatives><name xml:lang="en"><surname>Pham</surname><given-names>Ngoc T.</given-names></name><name xml:lang="ru"><surname>Фам</surname><given-names>Нгок Тхинь</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Civil Engineering, Lecturer, Faculty of Civil Engineering</p></bio><bio xml:lang="ru"><p>доктор технических наук, преподаватель, факультет гражданского строительства</p></bio><email>thinhtls@tlu.edu.vn</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8750-0021</contrib-id><name-alternatives><name xml:lang="en"><surname>Nguyen</surname><given-names>Thi M. S.</given-names></name><name xml:lang="ru"><surname>Нгуен</surname><given-names>Тхи Май Суонг</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Civil Engineering, Lecturer, Faculty of Civil Engineering</p></bio><bio xml:lang="ru"><p>доктор технических наук, преподаватель, факультет гражданского строительства</p></bio><email>suongntm@tlu.edu.vn</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8497-5280</contrib-id><name-alternatives><name xml:lang="en"><surname>Ngo</surname><given-names>Van L.</given-names></name><name xml:lang="ru"><surname>Нго</surname><given-names>Ван Линь</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Civil Engineering, Lecturer, Faculty of Civil Engineering</p></bio><bio xml:lang="ru"><p>доктор технических наук, преподаватель, факультет гражданского строительства</p></bio><email>ngovanlinh@tlu.edu.vn</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9600-0539</contrib-id><name-alternatives><name xml:lang="en"><surname>Dang</surname><given-names>Van P.</given-names></name><name xml:lang="ru"><surname>Данг</surname><given-names>Ван Фу</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Civil Engineering, Lecturer, Faculty of Civil Engineering</p></bio><bio xml:lang="ru"><p>доктор технических наук, преподаватель, факультет гражданского строительства</p></bio><email>phudv@tlu.edu.vn</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Power Engineering Consulting JSC3</institution></aff><aff><institution xml:lang="ru">Акционерное общество «Энергетический консалтинг»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Thuyloi University</institution></aff><aff><institution xml:lang="ru">Университет Туйлой</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-09-09" publication-format="electronic"><day>09</day><month>09</month><year>2025</year></pub-date><volume>21</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>207</fpage><lpage>215</lpage><history><date date-type="received" iso-8601-date="2025-09-29"><day>29</day><month>09</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Nguyen H.P., Pham N.T., Nguyen T.M., Ngo V.L., Dang V.P.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Нгуен Х.Ф., Фам Н.Т., Нгуен Т.М., Нго В.Л., Данг В.Ф.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Nguyen H.P., Pham N.T., Nguyen T.M., Ngo V.L., Dang V.P.</copyright-holder><copyright-holder xml:lang="ru">Нгуен Х.Ф., Фам Н.Т., Нгуен Т.М., Нго В.Л., Данг В.Ф.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/structural-mechanics/article/view/46168">https://journals.rudn.ru/structural-mechanics/article/view/46168</self-uri><abstract xml:lang="en"><p>The effect of precipitation on the pore pressure of water in the soil and the stability of the slope of an earthen dam is investigated. The earth dam at Khac Khoan reservoir in Binh Phuoc province, Vietnam, was chosen as the case study. In doing so, the SEEP/W and SLOPE/W modules of the GEOSTUDIO software simulate the effects of rainfall on the changes of pore-water pressure of soil and the stability of the earth dam. Four distinct rainfall scenarios representing different intensities were used for the analyses to assess their impact on soil pore-water pressure and stability of the earth dam. The results show that rainfall induces notable changes in pore-water pressure and reduces slope stability, with the magnitude of these effects varying by scenario. Among the scenarios, the moderate-intensity, prolonged rainfall (Scenario 3) exerted the most significant destabilizing influence. Understanding how rainfall alters pore-water pressures and slope safety factors is crucial for evaluating stability under worst-case conditions and formulating appropriate operational and maintenance strategies.</p></abstract><trans-abstract xml:lang="ru"><p>Исследовано влияние осадков на поровое давление воды в грунте и устойчивость откоса грунтовой плотины. В качестве объекта исследования была выбрана грунтовая плотина водохранилища Хакхоан, расположенного в провинции Биньфыок, Вьетнам. Для моделирования влияния осадков на изменение порового давления воды в грунте и устойчивость откоса использовались модули SEEP/W и SLOPE/W программного обеспечения GEOSTUDIO. Анализ проводился на основе четырех различных сценариев выпадения осадков, представляющих собой различные уровни интенсивности. Результаты показали, что осадки вызывают значительные изменения в поровом давлении воды и снижают устойчивость откоса, при этом степень воздействия варьируется в зависимости от сценария. Среди них наибольшее дестабилизирующее влияние оказал сценарий с осадками умеренной интенсивности и продолжительного характера (Сценарий 3). Понимание того, как осадки влияют на поровое давление и коэффициенты безопасности откоса, имеет решающее значение для оценки устойчивости в условиях наихудшего сценария и разработки соответствующих эксплуатационных и профилактических мероприятий.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Slope stability</kwd><kwd>Effects of rainfall on slope stability</kwd><kwd>Numerical simulation</kwd><kwd>Prolonged rainfall</kwd><kwd>Landslide</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>устойчивость откоса</kwd><kwd>влияние осадков на устойчивость откоса</kwd><kwd>численное моделирование</kwd><kwd>длительные осадки</kwd><kwd>оползень</kwd></kwd-group><funding-group/></article-meta><fn-group/></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Afungang R.N., Bateira C.V. 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