{"id":7801,"date":"2025-06-25T19:43:48","date_gmt":"2025-06-25T22:43:48","guid":{"rendered":"https:\/\/vinq.us\/?p=7801"},"modified":"2025-07-02T18:41:29","modified_gmt":"2025-07-02T21:41:29","slug":"pilhas-de-rejeito-geotecnia-hidrogeologia","status":"publish","type":"post","link":"https:\/\/vinq.us\/en\/pilhas-de-rejeito-geotecnia-hidrogeologia\/","title":{"rendered":"Tailings piles: Integration between geotechnics, hydrogeology and liability"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7801\" class=\"elementor elementor-7801\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c97224d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c97224d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-918d283\" data-id=\"918d283\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c218b33 elementor-widget elementor-widget-text-editor\" data-id=\"c218b33\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">To the <\/span><b>tailings piles<\/b><span style=\"font-weight: 400;\"> are permanent and critical structures for modern mining. Their <\/span><b>stability<\/b><span style=\"font-weight: 400;\"> depends directly on the <\/span><b>water behavior<\/b><span style=\"font-weight: 400;\"> within the massif. Even compacted and low-permeability materials can have the <\/span><b>shear strength<\/b><span style=\"font-weight: 400;\"> degraded over time, paving the way for problems such as liquefaction, internal erosion, and progressive ruptures. Control <\/span><b>pore pressures<\/b><span style=\"font-weight: 400;\"> and the <\/span><b>waterline<\/b><span style=\"font-weight: 400;\"> is therefore essential for security.<\/span><\/p><h3>\u00a0<\/h3><h2><b>The role of internal drainage systems<\/b><\/h2><p><span style=\"font-weight: 400;\">To mitigate risks, a set of solutions is used that <\/span><b>lower the waterline<\/b><span style=\"font-weight: 400;\"> and create preferential flow paths:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Horizontal or inclined drains<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Vertical drainage columns<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Intercalated drainage layers<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Granular and geocomposite filters<\/b><b><br \/><\/b><\/li><\/ul><p><span style=\"font-weight: 400;\">When well designed, these elements elevate the <\/span><b>overall safety factor<\/b><span style=\"font-weight: 400;\"> and prevent the accumulation of water in critical areas of the massif.<\/span><\/p><p>\u00a0<\/p><h2><b>Why know the local hydrogeological regime?<\/b><\/h2><p><span style=\"font-weight: 400;\">A good drainage system requires <\/span><b>detailed geological-geotechnical and hydrogeological characterization<\/b><span style=\"font-weight: 400;\">This diagnosis identifies:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Preferential flow zones<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Suspended water levels<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Connections to regional aquifers<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Hydraulic conductivities<\/b><b><br \/><\/b><\/li><\/ul><p><span style=\"font-weight: 400;\">Without this data, drainage may fail\u2014or worse, attract upward flows that increase instability.<\/span><\/p><p>\u00a0<\/p><h2><b>Numerical modeling: simulate today to protect tomorrow<\/b><\/h2><p><span style=\"font-weight: 400;\">Advanced projects integrate <\/span><b>numerical flow modeling<\/b><span style=\"font-weight: 400;\"> (permanent and transient), testing extreme scenarios:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Heavy rains<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Drainage system failures<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Operational changes<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">This allows you to create <\/span><b>preventive and contingency plans<\/b><span style=\"font-weight: 400;\"> aligned with the reality of each mine.<\/span><\/p><p>\u00a0<\/p><h2><b>Additional challenges: acid drainage<\/b><\/h2><p><span style=\"font-weight: 400;\">In stacks with <\/span><b>sulfur minerals<\/b><span style=\"font-weight: 400;\"> (e.g. pyrite), water also catalyzes <\/span><b>geochemical reactions<\/b><span style=\"font-weight: 400;\"> that generate <\/span><b>acid drainage<\/b><span style=\"font-weight: 400;\">, dissolving heavy metals and reducing pH. The consequences include:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Environmental damage<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Reduction of drain conductivity<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Filter clogging<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Corrosion of geosynthetics and metals<\/b><b><br \/><\/b><\/li><\/ul><h3><b>Mitigation strategies<\/b><\/h3><ol><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Acidity and potential neutralization tests<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Segregation of materials according to reactivity<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Filter layers <\/span><b>alkaline<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Coverages of <\/span><b>low diffusivity<\/b><span style=\"font-weight: 400;\"> to limit oxygenation<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Recirculation and treatment<\/b><span style=\"font-weight: 400;\"> of percolates<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><\/ol><p>\u00a0<\/p><h2><b>Continuous monitoring and adaptive management<\/b><\/h2><p><span style=\"font-weight: 400;\">Long-term stability depends on <\/span><b>real-time data<\/b><span style=\"font-weight: 400;\"> and constant updates:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Automated piezometers<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Geochemical sensors<\/b><b><br \/><\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Early warning systems<\/b><b><br \/><\/b><\/li><\/ul><p><span style=\"font-weight: 400;\">Data feeds updated models, supporting evidence-based decisions and reinforcing <\/span><b>continuous improvement<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p>\u00a0<\/p><h2><b>Responsibility and geotechnical legacy<\/b><\/h2><p><span style=\"font-weight: 400;\">As structures <\/span><b>permanent<\/b><span style=\"font-weight: 400;\">, tailings piles require:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Technical excellence<\/b><span style=\"font-weight: 400;\"> and multidisciplinary vision<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Compliance with standards and best practices<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ethical commitment to <\/span><b>the next generations<\/b><b><br \/><\/b><\/li><\/ul><p>\u00a0<\/p><p><b>At VinQ<\/b><span style=\"font-weight: 400;\">, we design with durability, resilience and protection of lives and ecosystems in mind. <\/span><b>True engineering<\/b><span style=\"font-weight: 400;\"> goes beyond delivering the work \u2014 it ensures safe performance throughout the structure&#039;s life cycle.<\/span><\/p><p><span style=\"font-weight: 400;\">Ready to take your tailings piles to the next level of safety? <\/span><b>Talk to VinQ experts<\/b><span style=\"font-weight: 400;\"> and discover how our integrated geotechnical and hydrogeological projects can protect your project today and in the future.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Discover why hydrogeological control and drainage systems are vital to the stability of tailings piles and the prevention of catastrophic failures.<\/p>","protected":false},"author":3,"featured_media":7802,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-7801","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rejeitos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - 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