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Webinar in partnership with Dassault Systèmes: Benefits of employing optimal pitwall profiles for strategic open mine planning

Learn how to design optimal pitwalls and how best integrate pitwall design into strategic open pit mine planning. This will be demonstrated through case studies of three metalliferous open pit mines.

About this event

The Overall Slope Angle (OSA) of pitwalls plays a crucial role in the financial return of an open pit mine. In current practice, pitwall profiles are designed to be planar in cross-section within each rock layer, i.e. the profile inclination across each layer tends to be constant. The presentation will showcase a novel design methodology where non-planar pitwall profiles of optimal shapes with the use of Dassault Systèmes GEOVIA solutions - i.e. the shape of the pitwall is chosen such that resistance against landsliding is maximised - are employed so that OSA of up to 5 degrees higher can be achieved.

Moreover the design of pitwall inclinations is typically carried out by geotechnical engineers prior to pit optimisation for an assumed pit depth. The benefit of performing iterations (and how best to do so) between pit optimisation and geotechnical pitwall design will also be illustrated.

Three case studies of metalliferous mines - a copper mine in South America, a gold mine and the McLaughlin gold mine in California  – will be presented to quantify the gains in Net Present Value and other financial metrics together with estimates of carbon footprint reductions achieved by adopting the aforementioned methodology.



Stefano Utili

Professor, Geotechnical Engineering at Newcastle University
Stefano is Professor of Geotechnical Engineering at Newcastle University (UK) and founder of OptimalSlope Ltd. He is a Chartered Engineer and Fellow of the Institution of Civil Engineering. Stefano is member of the International Technical Committee 208 “Slope stability in engineering practice” and has over 20 year research experience on slope stability calculations and the design of slopes. Stefano will deliver this webinar in partnership with Dassault Systèmes.

Date and Time

Monday, 07 November 2022
6.00pm – 7.00pm (UTC+10:00)


AusIMM members - free
Non-members - $30
Register now

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