{"id":20257,"date":"2026-08-05T09:56:49","date_gmt":"2026-08-05T07:56:49","guid":{"rendered":"https:\/\/cps.es\/portfolio\/assainissement-du-site-de-la-decharge-de-la-desmontera-excelsior\/"},"modified":"2026-08-05T13:10:59","modified_gmt":"2026-08-05T11:10:59","slug":"assainissement-du-site-de-la-decharge-de-la-desmontera-excelsior","status":"publish","type":"portfolio","link":"https:\/\/cps.es\/fr\/portfolio\/assainissement-du-site-de-la-decharge-de-la-desmontera-excelsior\/","title":{"rendered":"Assainissement du site de la d\u00e9charge de la Desmontera Exc\u00e9lsior"},"content":{"rendered":"\t\t
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Assainissement du site de la mine \u00ab Desmontera Exc\u00e9lsior \u00bb \u00e0 Cerro de Pasco<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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CPS P\u00e9rou, au sein d’un consortium, a assur\u00e9 la supervision des travaux de remise en \u00e9tat de la d\u00e9charge d’Exc\u00e9lsior<\/strong>, dans la r\u00e9gion de Cerro de Pasco, au P\u00e9rou<\/strong>. La fermeture de la d\u00e9charge d’Exc\u00e9lsior constitue la plus grande<\/strong> op\u00e9ration de remise en \u00e9tat environnementale du P\u00e9rou<\/strong> et l’une des plus importantes d’Am\u00e9rique latine. <\/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

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Le site d’Exc\u00e9lsior a accueilli les r\u00e9sidus miniers provenant de la mine \u00e0 ciel ouvert Ra\u00fal Rojas de Cerro de Pasco de 1956 \u00e0 l’an 2000, accumulant ainsi environ 50 millions de tonnes<\/strong> dont les infiltrations polluaient le sol et l’air sur une superficie comprise entre 69 et 79 ha<\/strong> environ .<\/strong><\/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

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Photo : AMSAC<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\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
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Les travaux restant \u00e0 r\u00e9aliser concernent, pour l’essentiel, le syst\u00e8me d’irrigation, notamment les conduites de distribution et les \u00e9quipements d’irrigation. Ce grand projet profite \u00e0 plus de 10 000 habitants<\/strong> des communes de Champamarca et de Quiulacocha, dans la r\u00e9gion de Cerro de Pasco. <\/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

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Les travaux d’assainissement et le suivi de surveillance se sont articul\u00e9s autour de trois volets principaux :<\/p>

  1. Stabilit\u00e9 physique :<\/strong>
    • Remodelage et profilage de talus massifs \u00e0 plus de 4 300 m\u00e8tres d’altitude.<\/li>
    • Construction de structures de sout\u00e8nement et d’un mur en b\u00e9ton arm\u00e9 afin de pr\u00e9venir les risques de glissements de terrain et d’instabilit\u00e9 g\u00e9otechnique.<\/li><\/ul><\/li>
    • Stabilit\u00e9 chimique :<\/strong>
      • Confinement et scellement des mat\u00e9riaux pyriteux susceptibles de g\u00e9n\u00e9rer des eaux d’exhaure acides (EEA)<\/strong>.<\/li>
      • Installations d’un syst\u00e8me de rev\u00eatement multicouche (\u00e9tanch\u00e9it\u00e9 et isolation) afin d’emp\u00eacher les infiltrations d’eau et le contact avec l’oxyg\u00e8ne.<\/li><\/ul><\/li>
      • Stabilit\u00e9 hydrologique et rev\u00e9g\u00e9talisation :<\/strong>
        • Construction de canaux de d\u00e9versement et gestion des eaux pluviales afin de d\u00e9tourner les eaux de ruissellement non pollu\u00e9es hors du bassin.<\/li>
        • Isolation hydrique et rev\u00e9g\u00e9talisation de la surface en vue de la restauration progressive du paysage des hautes Andes.<\/li><\/ul><\/li><\/ol>\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
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          Assainissement du site de la mine \u00ab Desmontera Exc\u00e9lsior \u00bb \u00e0 Cerro de Pasco<\/h2>\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
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          \n Localizaci\u00f3n<\/span>\n <\/h3>\n
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          Cerro de Pasco - Per\u00fa<\/span><\/p> <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n \n \n\n

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          \n Cliente<\/span>\n <\/h3>\n
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          Activos Mineros S.A.C. (AMSAC)<\/p> <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n \n \n\n

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          \n Fecha (inicio-fin)<\/span>\n <\/h3>\n
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          Diciembre 2017 - En ejecuci\u00f3n<\/span><\/p> <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n \n \n \n <\/div>\n <\/div>\n\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

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          \n Proyectos relacionados<\/span> <\/h2>\n \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>\n\t\t","protected":false},"excerpt":{"rendered":"

          Assainissement du site de la mine \u00ab Desmontera Exc\u00e9lsior \u00bb \u00e0 Cerro de Pasco CPS P\u00e9rou, au sein d’un consortium, a assur\u00e9 […]<\/p>\n","protected":false},"author":9,"featured_media":7784,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"portfolio_category":[121],"class_list":["post-20257","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","portfolio_category-internacional-fr"],"_links":{"self":[{"href":"https:\/\/cps.es\/fr\/wp-json\/wp\/v2\/portfolio\/20257","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cps.es\/fr\/wp-json\/wp\/v2\/portfolio"}],"about":[{"href":"https:\/\/cps.es\/fr\/wp-json\/wp\/v2\/types\/portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/cps.es\/fr\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/cps.es\/fr\/wp-json\/wp\/v2\/comments?post=20257"}],"version-history":[{"count":0,"href":"https:\/\/cps.es\/fr\/wp-json\/wp\/v2\/portfolio\/20257\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cps.es\/fr\/wp-json\/wp\/v2\/media\/7784"}],"wp:attachment":[{"href":"https:\/\/cps.es\/fr\/wp-json\/wp\/v2\/media?parent=20257"}],"wp:term":[{"taxonomy":"portfolio_category","embeddable":true,"href":"https:\/\/cps.es\/fr\/wp-json\/wp\/v2\/portfolio_category?post=20257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}