--- title: The use of 3D models and analysis in support of waste stockpile design and operations date: 2018-11-02T14:46:00-04:00 author: jessica napert canonical_url: "https://www.bbaconsultants.com/es-cl/section-publications/the-use-of-3d-models-and-analysis-in-support-of-waste-stockpile-design-and-operations" section: Publications --- 1. The complexities of waste rock stockpiles are often underestimated. Slope stability analysis for such earth structures is usually carried out using two-dimensional (2D) slope stability methods. Furthermore the sections used in the analysis are often idealized. Selecting a typical or critical section is left to the designer. Given the number of parameters that can affect stability this approach may not always bring focus to those areas of the waste stock pile which are most critical. As such, three-dimensional (3D) slope stability analysis offers a more complete screening tool which assists the designer in identifying the most critical areas. Mining projects, in which complex co-deposition schemes are employed, using both fine and coarse material, coupled 3D seepage and slope stability analysis can prove useful. This allows modelling the impact of various co-deposition methods on the waste rock pile’s hydraulic regime and its effect on stability. Some complex co-deposition configurations modelling cannot be carried out with 2D analysis. Note that this white paper was the subject of a presentation at the Tailings and Mine Waste’18 Conference in Colorado State University. This content is for general information purposes only. All rights reserved ©BBA 1. ![Luciano Piciacchia](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/3206/Luciano-Piciacchia.webp) Luciano Piciacchia, P.Eng., Ph.D. Senior Consulting Expert, Earth and Infrastructure [ ](https://www.linkedin.com/in/lucianopiciacchia/) 2. ![Vahid Marefat](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/3194/Vahid-Marefat.webp) Vahid Marefat, P.Eng., Ph.D. Senior Engineer, Earth and Infrastructure [ ](https://www.linkedin.com/in/vahidmarefat/) - [ 17 ago 2026 Structural engineering early phase: unlocking value through early decisions - ![Nicolas Samson](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/197852/Nicolas-Samson.webp) Nicolas Samson, P.Eng. Senior Engineer, Structural ](https://www.bbaconsultants.com/es-cl/perspectivas/structural-engineering-early-phase-unlocking-value-through-early-decisions "Structural engineering early phase: unlocking value through early decisions") - [ 12 ago 2026 Four mistakes that can harm the future performance of industrial assets - ![Caroline provost](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/208557/Caroline-provost.webp) Caroline Provost P.Eng. Director, Operational Strategy Implementation ](https://www.bbaconsultants.com/es-cl/perspectivas/four-mistakes-that-can-harm-the-future-performance-of-industrial-assets "Four mistakes that can harm the future performance of industrial assets") - [ 27 jul 2026 Minería y metalurgia Por qué las decisiones tempranas sobre relaves definen el desempeño de la mina a largo plazo - ![Geraldine Cosset](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/206707/Geraldine-Cosset.webp) - ![Jared Purdy](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/212424/Jared-Purdy.webp) ](https://www.bbaconsultants.com/es-cl/perspectivas/las-decisiones-sobre-relaves-definen-desempeno-mina-a-largo-plazo "Por qué las decisiones tempranas sobre relaves definen el desempeño de la mina a largo plazo") - [ 02 jul 2026 Minería y metalurgia Python: Una herramienta clave para el análisis de datos en el procesamiento de minerales - ![Charles Blais](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/211197/Charles-Blais.webp) - ![Juan Pablo Vergara](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/211266/Juan-Pablo-Vergara.webp) ](https://www.bbaconsultants.com/es-cl/perspectivas/python-una-herramienta-clave-para-analisis-datos-en-procesamiento-minerales "Python: Una herramienta clave para el análisis de datos en el procesamiento de minerales") [ Ver todo ](https://www.bbaconsultants.com/es-cl/perspectivas "Ir a la página del listado de Publications") Pensemos más [ Póngase en contacto con nosotros ](https://www.bbaconsultants.com/es-cl/p%C3%B3ngase-en-contacto-con-nosotros) 1. The complexities of waste rock stockpiles are often underestimated. Slope stability analysis for such earth structures is usually carried out using two-dimensional (2D) slope stability methods. Furthermore the sections used in the analysis are often idealized. Selecting a typical or critical section is left to the designer. Given the number of parameters that can affect stability this approach may not always bring focus to those areas of the waste stock pile which are most critical. As such, three-dimensional (3D) slope stability analysis offers a more complete screening tool which assists the designer in identifying the most critical areas. Mining projects, in which complex co-deposition schemes are employed, using both fine and coarse material, coupled 3D seepage and slope stability analysis can prove useful. This allows modelling the impact of various co-deposition methods on the waste rock pile’s hydraulic regime and its effect on stability. Some complex co-deposition configurations modelling cannot be carried out with 2D analysis. Note that this white paper was the subject of a presentation at the Tailings and Mine Waste’18 Conference in Colorado State University. This content is for general information purposes only. All rights reserved ©BBA