{"id":24004,"date":"2023-05-31T10:17:51","date_gmt":"2023-05-31T08:17:51","guid":{"rendered":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/mine-dor-du-tasiast-massif-de-ladrar\/"},"modified":"2024-01-26T12:06:23","modified_gmt":"2024-01-26T11:06:23","slug":"mine-dor-du-tasiast-massif-de-ladrar","status":"publish","type":"stories","link":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/mine-dor-du-tasiast-massif-de-ladrar\/","title":{"rendered":"MINE D\u2019OR DU TASIAST MASSIF DE L\u2019ADRAR"},"content":{"rendered":"
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Probl\u00e8me<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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Dans le cadre de l\u2019exploitation de la mine d\u2019or du Tasiast dans le massif de l\u2019Adrar (d\u00e9sert mauritanien), la compagnie mini\u00e8re KINROSS a fait construire un mur de concasseur primaire, n\u00e9cessitant la r\u00e9alisation de deux murs lat\u00e9raux d\u2019une hauteur de 32m50. La technique de renforcement de sol \u00e0 parement min\u00e9ral vertical Terramesh\u00ae System, d\u00e9velopp\u00e9e par la soci\u00e9t\u00e9 Maccaferri a \u00e9t\u00e9 retenue. La soci\u00e9t\u00e9 AUSENCO, en charge de la maitrise d\u2019\u0153uvre de travaux a \u00e9t\u00e9 s\u00e9duite par les performances du proc\u00e9d\u00e9 Terramesh\u00ae system ainsi que du support technique apport\u00e9 par la soci\u00e9t\u00e9 Maccaferri. Il s\u2019agit du mur en Terramesh system le plus haut dans le domaine des applications mini\u00e8res ! <\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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Solution<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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Le Terramesh\u00ae system est un syst\u00e8me associant un gabion de faade \u00e0 une nappe de renfort en grillage continue du parement. La partie gabion assure un parement soign\u00e9 tandis que le renfort grillag\u00e9 permet un renforcement du remblai arri\u00e8re et la tenue du massif. En compl\u00e9ment au grillage, des g\u00e9ogrilles de renfort de type Paralink\u00ae 300 et Paralink\u00ae 400 ont \u00e9t\u00e9 ajout\u00e9es sur une longueur de 20m dans le remblai pour apporter le renforcement n\u00e9cessaire. Le grillage constitutif du Terramesh\u00ae system est \u00e0 maille hexagonale double torsion (ind\u00e9maillable)rev\u00eatu d’une gaine en PVC de 1mm d\u2019\u00e9paisseur. Cette protection du fil, particuli\u00e8rement r\u00e9sistante \u00e0 la corrosion assure une dur\u00e9e de service \u00e0 l\u2019ouvrage de 120 ans. Le dimensionnement de l\u2019ouvrage a \u00e9t\u00e9 r\u00e9alis\u00e9 par le d\u00e9partement technique de Maccaferri en utilisant le logiciel interne de stabilit\u00e9 de pente MACSTARS afin de d\u00e9finir la longueur, l\u2019espacement et le type de renfort. La r\u00e9alisation d\u2019un ouvrage de sout\u00e8nement d\u2019une telle ampleur n\u00e9cessite une mise en place soign\u00e9e des structures et un strict respect de la proc\u00e9dure travaux. MACCAFERRI a transmis une proc\u00e9dure travaux compl\u00e8te pour assister l\u2019entreprise dans l\u2019ensemble des \u00e9tapes de r\u00e9alisation de l\u2019ouvrage. Les cages ont \u00e9t\u00e9 remplies avec des pierres extraites du site et concass\u00e9es sur site. Pr\u00e8s de 4000t de pierres ont ainsi \u00e9t\u00e9 n\u00e9cessaires pour remplir les cages. En consid\u00e9rant une concentration moyenne d\u2019or de 5g\/t de pierres extraites, , le mur est constitu\u00e9 d\u2019environ 20kg d\u2019or\u00a0!<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>

Used Products<\/h2>
\"Terramesh\"<\/div>
Terramesh<\/h6>La famille Terramesh\u00ae de Maccaferri comprend diff\u00e9rentes options de parement pour la construction de structures en terre stabilis\u00e9e m\u00e9caniqu<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div>
\"G\u00e9ogrilles<\/div>
G\u00e9ogrilles monoaxiales<\/h6>Les g\u00e9ogrilles sont utilis\u00e9es, principalement, \u00e0 des fins de renforcement, compte tenu de leur structure particuli\u00e8re qui leur permet de fournir la fo<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

Le Terramesh\u00ae system est un syst\u00e8me associant un gabion de fa\u00e7ade \u00e0 une nappe de renfort en grillage continue du parement. La partie gabion assure<\/p>\n","protected":false},"featured_media":9445,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-24004","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":null,"applications":null,"solutions":null,"sectors":null},"yoast_head":"\nMINE D\u2019OR DU TASIAST MASSIF DE L\u2019ADRAR - Maccaferri France<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/mine-dor-du-tasiast-massif-de-ladrar\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MINE D\u2019OR DU TASIAST MASSIF DE L\u2019ADRAR - Maccaferri France\" \/>\n<meta property=\"og:description\" content=\"Le Terramesh\u00ae system est un syst\u00e8me associant un gabion de fa\u00e7ade \u00e0 une nappe de renfort en grillage continue du parement. 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