Smart composite in construction Smart composite in construction Умные композиты в строительстве 2782-1919 82613 10.52957/27821919_2022_4_48 Экологическая безопасность строительства и городского хозяйства Environmental safety of construction and urban management Экологическая безопасность строительства и городского хозяйства Assessment of the Grain Composition Heterogeneity of the Ash Dump Pond of Omsk TPP-4 Оценка неоднородности зернового состава золошлаковой смеси на золоотвале Омской ТЭЦ-4 Лунёв Александр Александрович Lunev Aleksandr Aleksandrovich Сибирский государственный автомобильно-дорожный университет Россия Сибирский государственный автомобильно-дорожный университет Russian Federation 23 12 2022 23 12 2022 3 4 48 61 12 10 2022 17 11 2022 https://chemintech.ru/en/nauka/article/82613/view

Во многих регионах Российской Федерации существует дефицит природных грунтов требуемого качества. Обостряется и другая проблема, характерная для мегаполисов: сотни гектаров в пригородных зонах заняты отвалами отходов промышленности, большую часть из которых составляют золошлаковые смеси угольных теплоэлектростанций. Фракционирование золошлаковой смеси при намыве в отвалах приводит к неоднородности зернового состава, учет которой необходим при разработке техногенного грунта. Для изучения неоднородности в секции № 2 золоотвала ТЭЦ-4 г. города Омска проведено бурение 14 вертикальных скважин с отбором проб нарушенной структуры с глубин 0.5, 4.5, 8.5 м и 12.5 м. Пробы золошлаковых материалов исследованы в лабораторных условиях для оценки их состава ситовым и ареометрическим методами. Установлено, что изменение крупности частиц этого техногенного грунта в значительной мере обычно носит случайный характер. Выявлена статистически значимая закономерность, позволяющая прогнозировать гранулометрический состав золошлаковых смесей в золоотвале.

Nowadays, there is a shortage of natural soils of the required quality in many regions of the Russian Federation. Another issue is typical one for the megacities: hundreds of hectares in suburban areas covered by industrial waste dumps, most of which are ash and slag mixtures of coal thermal power plants. The fractionation of the ash and slag mixture during washing in dumps leads to heterogeneity of the grain composition, accounting for which is necessary during the development of man-made soil. To study the heterogeneity in the Section No. 2 of the ash dump TPP-4 in Omsk, we drilled 14 vertical wells and took the samples with disturbed structure from depths of 0.5, 4.5, 8.5 m and 12.5 m. Then, we made the laboratory study of ash and slag materials samples to assess their composition by sieve and areometric methods. According to the study, we define random changing of the man-made soil particle size. Also, the study allows us to identify a statistically significant pattern that can predict the distribution of ash grain size and slag mixtures in the ash dump.

 тепловые электростанции золошлаковые отходы и смеси техногенные грунты зерновой состав thermal power plants ash and slag waste and mixtures man-made soils grain composition Исследования выполнены совместно с акционерным обществом «Территориальная генерирующая компания № 11» (АО «ТГК-11») в рамках изучения свойств накопленных объемов золошлаковых материалов в отвалах СП «ТЭЦ-4» и СП «ТЭЦ-5» г. Омска.

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