2. Tailings Deposits with Borrow Material Dam

BRIEF SUMMARY

Module 2 of the diploma in Geotechnical Design of Tailings Dams, Waste Dumps, and Leaching Pads aims to review the fundamental concepts of geotechnical design of tailings dams with borrow material embankments. Different zoning types for dams will be reviewed based on their consequence classification, with an emphasis on those rated from high to extreme. Similarly, aspects related to defining foundation depth and topics related to the construction process of foundation preparation will be explored in depth. Additionally, cases of dam failures due to piping phenomena will be studied, and the importance of proper filter design will be understood. For this, various filter design methodologies will be reviewed, and a practical exercise will be conducted using the United States Department of Agriculture (2017) methodology. Subsequently, the philosophical difference between water dams and tailings dams will be emphasized, considering the different tailings disposal technologies and the importance of the beach in those using the pumping system. Then, geotechnical aspects related to concrete-faced rockfill dams, such as the effects of rockfill compressibility on the structure's performance, will be analyzed. Techniques for foundation treatment using cut-off walls and grouting will also be investigated. All the aforementioned aspects will be combined to perform stability analysis of the deposits under static and seismic conditions, involving a review of geotechnical soil characterization, the limit equilibrium method, and simplified seismic displacement methodologies. Finally, case studies will be presented from a construction perspective, emphasizing quality control (QA/QC) of fill compaction, and from a geotechnical analysis perspective, involving a 2D nonlinear dynamic analysis case using finite difference software with advanced constitutive models (PM4Sand and SANISand-Sf).

BENEFITS

► Receive certification in the name of the International Geotechnical Center as a specialist in Tailings Dams, Waste Dumps, and Leach Pads Design.

► Get trained by an experienced speaker in the field.

► Receive slides and materials for each module.

► Be able to make necessary academic inquiries through the CGI Virtual Campus forums.

► Choose the start date and complete the diploma at your own pace and schedule within the access period. You can pause and review the videos as many times as needed to grasp the knowledge being imparted.

► Access a network of professionals from various countries worldwide. Our diploma program includes technicians, university students, engineers, master's, doctoral, and post-doctoral candidates, as well as individuals from various professional backgrounds.

► Access the database of participant inquiries and responses, as well as technical reports generated in each module and supporting theses.

OBJECTIVES

► Identify the different types of zoning based on deposit classification.

► Study concepts related to foundation preparation. 

► Understand the importance of proper filter design through case studies of piping failures and the study of design methodologies. 

► Review various tailings disposal technologies and emphasize the difference between water dams and tailings dams. 

► Evaluate the advantages of rockfill dams with concrete faces for large-scale operations and the treatment applied to waterproof the foundation (grouting and cut-off walls). 

► Conduct stability analysis under static and seismic conditions using simplified displacement methodologies. 

► Review a case study applying nonlinear dynamic analysis in 2D using finite difference software with the use of advanced constitutive models (PM4Sand and SANISand-Sf).

SYLLABUS

► Module 2: Tailings Deposits with Borrow Material Dam

a. Dams types, selection, and examples
b. Foundation preparation

c. Internal Erosion and Filter Design

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