Biography

Civil engineer with more than thirty years of experience in geotechnical engineering, including research and teaching in university post-graduate courses. Extensive experience in engineering design and construction, including foundations, excavations, road embankments, retention structures, water and tailings dams and waste deposits. He has specialized in understanding the behavior of geotechnical materials and applying that understanding to practical problems. He has been involved in civil and mining projects in Africa, Asia, North and South America, and Australia. He has published more than 120 articles in magazines and conferences.

Topic to be discussed

The presentation proposes a procedure for the design of pulp retention dams of contractive tailings, that is, susceptible to static and cyclic liquefaction. The procedure meets recently updated stability criteria in recognized international standards for tailings dam design.

Biography

Dr. Jorge Macedo serves as Professor in the Geosystems group at the Georgia Institute of Technology, Atlanta, Georgia, USA. UU. Dr. Macedo also has vast experience as an international consultant in Mining Geotechnical Engineering and is an accredited "Professional Engineer" in Peru and California / USA. Dr. Macedo received M.S (2014) and Ph.D (2017) degrees in Geoengineering from the Department of Civil and Environmental Engineering at the University of California, Berkeley. Before joining UC Berkeley, he worked as a geotechnical engineer for 6 years, participating in a variety of geotechnical and geo-environmental multidisciplinary projects for the infrastructure, mining and oil-gas sectors, working on the most emblematic projects in Peru, Argentina and Brazil. Dr. Macedo actively develops research in the areas of mining geotechnics, seismic geotechnical engineering, advanced numerical modeling geotechnical geotechnical structures, performance-based design and risk assessment; having published technical articles referring to these areas in countries such as the United States, New Zealand, Republic of Macedonia, Peru, Chile, Canada and Portugal. Dr. Macedo has also received several awards in Peru and the United States.

Topic to be discussed

This talk will discuss the phenomenon of static liquidation in mining tailings, placing special emphasis on lessons learned after recent failures of tailings deposits around the globe (e.g. Fundao, Cadia, Brumadhino). The talk will also present recent research developed at Georgia Tech and by the Taileng consortium.

Biography

Diploma in Formulation of Investment Projects, by the Universidad del Pacífico-Lima Peru Master in Public Management and Government Security, by Alas Peruanas-Lima-Peru University More than 30 years of experience in the public and private company in supervision, consulting, execution of works and international cooperation

Topic to be discussed

First of all, to highlight the importance of the mining industry in the economy of the country and consequently in its development Then the importance of the regulatory body in the supervisory functions of the security of infrastructure and mining operations. Then It is about the evolution of the supervision process over the years, to plan the supervision of the various components based on the risk methodology; in accordance with the OECD recommendations.

Biography

Civil Engineer from the “Ricardo Palma” University, specialist in Soil Mechanics, Licensed in Project Management. With 35 years of experience in the field of Construction, deployed in the Construction of Tailings and Leaching Deposit Systems, Earth Dams, Rolled Compacted Concrete Dams (RCC), Hardfill Dams, Concrete Face with Rocking Dams (CFRD), Hydroelectric Power Plants, Reservoirs constituted by Dikes and Geomembranes, Slope Waterproofing, Leaching Pad, Channels with Geomembranes and Concrete, Roads, Buildings, Water Treatment Plants, among others.

Topic to be discussed

Topic 1: Basic Concepts:
1.1 Construction Methods, 1.2 Materials, 1.3 Foundation Treatment.
Topic 2: Building Facilities:
2.1 Provisional and Definitive Accesses, 2.2 Drainage Works, 2.3 Complementary Equipment, 2.4 Pumping.
Topic 3: Constructive Processes:
3.1 CERRO CUTE: Filtered Tailings Deposit, 3.2 SMCV 2: Tailings Deposit, 3.3 TOROMOCHO: Tailings Deposit, 3.4 QUELLAVECO: Tailings Deposit
Topic 4: Strategies:
4.1 Material Balance, 4.2 Blasting, 4.3 Mass Fillings, 4.4 Drains, 4.5 Material Transportation, 4.6 Yields.

Biography

Principal Chief Executive Officer - Geosinergia

Topic to be discussed

Today, with the latest technologies and applications, you can anticipate not to commit again the mistakes that preceded the great collapses of tailings in Brazil such as SAMARCO and Brumadigno.

One line is clear:

for If we want to have a good monitoring and control of static stability and dynamic of our tailings, we must use what we really need, a geotechnical / structure monitoring as expected from the project.