Qiang Li, Bize Wu, Sihai Yao, Mengfan Zhang, Hong Zhang
{"title":"干堆式尾矿坝在多年累积降雨渗透条件下饱和线的解析解","authors":"Qiang Li, Bize Wu, Sihai Yao, Mengfan Zhang, Hong Zhang","doi":"10.1007/s10064-024-03899-0","DOIUrl":null,"url":null,"abstract":"<div><p>The saturation line serves as the foundation for the safety analysis and seepage control design of tailings dams. The primary cause of the saturation line formation in dry-stack tailings dams is the cumulative infiltration of years of rainfall. Previous studies have indicated that, under the cumulative infiltration of years of rainfall, a relatively stable seepage field eventually forms within dry-stack tailings dams, but there is a lack of theoretical research on this seepage field. This paper aims to establish a theoretical solution for the saturation line of dry-stack tailings dams under the accumulation of rainfall over many years. Based on this, the gradual seepage differential equations of the saturation line in dry-stack tailings dams were derived using Darcy's law and the energy equation. By incorporating downstream boundary conditions and rainfall boundary conditions, an analytical solution for the saturation line of dry-stack tailings dams under multi-years rainfall conditions was derived. A comparison between the analytical solution and numerical simulation results was conducted, indicating that the analytical solution closely matches the numerical solution, with a maximum difference of 5.17%. The findings of study can fill the gap in the theoretical study of seepage fields in dry-stack tailings dams under the accumulation of rainfall over many years, which is of significant importance in enriching the theoretical framework of seepage in dry tailings dams. It can serve as the basis for drainage design and slope stability analysis of dry-stack tailings dams, and is crucial for designing safer and more efficient waste management practices in mining and construction.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"83 10","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Analytical solution for the saturation line in dry-stack tailings dams under cumulative rainfall infiltration for many years\",\"authors\":\"Qiang Li, Bize Wu, Sihai Yao, Mengfan Zhang, Hong Zhang\",\"doi\":\"10.1007/s10064-024-03899-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The saturation line serves as the foundation for the safety analysis and seepage control design of tailings dams. The primary cause of the saturation line formation in dry-stack tailings dams is the cumulative infiltration of years of rainfall. Previous studies have indicated that, under the cumulative infiltration of years of rainfall, a relatively stable seepage field eventually forms within dry-stack tailings dams, but there is a lack of theoretical research on this seepage field. This paper aims to establish a theoretical solution for the saturation line of dry-stack tailings dams under the accumulation of rainfall over many years. Based on this, the gradual seepage differential equations of the saturation line in dry-stack tailings dams were derived using Darcy's law and the energy equation. By incorporating downstream boundary conditions and rainfall boundary conditions, an analytical solution for the saturation line of dry-stack tailings dams under multi-years rainfall conditions was derived. A comparison between the analytical solution and numerical simulation results was conducted, indicating that the analytical solution closely matches the numerical solution, with a maximum difference of 5.17%. The findings of study can fill the gap in the theoretical study of seepage fields in dry-stack tailings dams under the accumulation of rainfall over many years, which is of significant importance in enriching the theoretical framework of seepage in dry tailings dams. It can serve as the basis for drainage design and slope stability analysis of dry-stack tailings dams, and is crucial for designing safer and more efficient waste management practices in mining and construction.</p></div>\",\"PeriodicalId\":500,\"journal\":{\"name\":\"Bulletin of Engineering Geology and the Environment\",\"volume\":\"83 10\",\"pages\":\"\"},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2024-09-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of Engineering Geology and the Environment\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10064-024-03899-0\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Engineering Geology and the Environment","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10064-024-03899-0","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Analytical solution for the saturation line in dry-stack tailings dams under cumulative rainfall infiltration for many years
The saturation line serves as the foundation for the safety analysis and seepage control design of tailings dams. The primary cause of the saturation line formation in dry-stack tailings dams is the cumulative infiltration of years of rainfall. Previous studies have indicated that, under the cumulative infiltration of years of rainfall, a relatively stable seepage field eventually forms within dry-stack tailings dams, but there is a lack of theoretical research on this seepage field. This paper aims to establish a theoretical solution for the saturation line of dry-stack tailings dams under the accumulation of rainfall over many years. Based on this, the gradual seepage differential equations of the saturation line in dry-stack tailings dams were derived using Darcy's law and the energy equation. By incorporating downstream boundary conditions and rainfall boundary conditions, an analytical solution for the saturation line of dry-stack tailings dams under multi-years rainfall conditions was derived. A comparison between the analytical solution and numerical simulation results was conducted, indicating that the analytical solution closely matches the numerical solution, with a maximum difference of 5.17%. The findings of study can fill the gap in the theoretical study of seepage fields in dry-stack tailings dams under the accumulation of rainfall over many years, which is of significant importance in enriching the theoretical framework of seepage in dry tailings dams. It can serve as the basis for drainage design and slope stability analysis of dry-stack tailings dams, and is crucial for designing safer and more efficient waste management practices in mining and construction.
期刊介绍:
Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces:
• the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations;
• the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change;
• the assessment of the mechanical and hydrological behaviour of soil and rock masses;
• the prediction of changes to the above properties with time;
• the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.