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Tailings Embankment Design Tailings embankment design is a critical aspect of mining and waste management, ensuring the safe and effective containment of mining waste. This presentation will explore the key considerations and best practices in tailings embankment design, covering topics such as phre...

Tailings Embankment Design Tailings embankment design is a critical aspect of mining and waste management, ensuring the safe and effective containment of mining waste. This presentation will explore the key considerations and best practices in tailings embankment design, covering topics such as phreatic surface control, filter requirements, materials selection, and design adaptations for cold regions. by Christian Ordonez Control of Phreatic Surface Importance of Phreatic Surface Control Impacts on Stability The phreatic surface, or the level of The position and fluctuations of the saturation within the embankment, is a phreatic surface can have a significant critical factor in determining the overall impact on the overall stability of the stability of the structure. Proper control tailings embankment. Careful of the phreatic surface is essential to monitoring and management of the minimize the risk of failure. phreatic surface is crucial to ensure long-term safety and performance. 1 2 3 Methods and Techniques Various methods and techniques, such as the use of drainage systems, cutoff walls, and engineered fill materials, can be employed to effectively control the phreatic surface and maintain embankment stability. Filter Requirements Purpose of Filters Types of Filter Design Criteria Materials Filters play a critical role The design of filters must in tailings embankment A variety of filter consider factors such as design, preventing the materials, such as particle size distribution, migration of fine-grained granular soils, geotextiles, permeability, and particles and maintaining and engineered filter compatibility with the the integrity of the media, can be used to surrounding materials to structure. meet the specific design ensure effective filtration requirements of a tailings and long-term embankment. performance. Materials Selection Criteria for Material Selection Types of Materials Used The selection of materials for a tailings Common materials used in tailings embankment is based on factors such embankment construction include soil, as availability, cost, engineering rock, geosynthetics, and concrete, each properties, and compatibility with the with their own unique characteristics project requirements. and applications. Factors Influencing Selection Sustainability Considerations The final material selection is influenced In recent years, there has been an by factors such as site conditions, increased focus on using sustainable environmental regulations, and the and environmentally-friendly materials specific design objectives of the tailings in tailings embankment design to embankment project. minimize the overall environmental impact. Influence of Foundation Conditions Foundation Impact on Mitigation Strategies Characteristics Embankment Employing appropriate Stability The foundation mitigation strategies, conditions, including soil Weak or unfavorable such as ground type, groundwater levels, foundation conditions improvement and geologic features, can compromise the techniques, foundation play a crucial role in the stability of the tailings reinforcement, or overall stability and embankment, leading to engineered foundation performance of a tailings potential failures and systems, can help embankment. environmental address the challenges consequences. posed by unfavorable foundation conditions. Design in Cold Regions 1 2 Challenges of Cold Regions Design Adaptations Tailings embankments in cold Specialized design approaches, regions face unique challenges, including the use of insulation, such as frost heave, ice thermal barriers, and formation, and the potential for engineered drainage systems, permafrost, which can are necessary to address the significantly impact the stability specific challenges posed by and performance of the cold-region environments. structure. 3 Case Studies Studying successful case studies of tailings embankment design in cold regions can provide valuable insights and lessons learned for addressing the unique challenges of these environments. Summary Phreatic Filter Materials Foundation Surface Requirements Selection Conditions Control Effective control of Filters play a Careful selection of Understanding and the phreatic crucial role in materials based on addressing surface is critical preventing particle engineering foundation for maintaining migration and properties and challenges is key to embankment preserving sustainability is embankment stability. embankment essential. stability. integrity. Questions and Answers This final section is reserved for addressing any questions or discussion points that may arise from the audience regarding the topics covered in the presentation. The presenter should be prepared to provide clear and informative responses to ensure a productive Q&A session.