{"id":18524,"date":"2017-05-01T13:44:48","date_gmt":"2017-05-01T19:44:48","guid":{"rendered":"https:\/\/www.boartlongyear.com\/?p=18524"},"modified":"2020-03-30T11:11:34","modified_gmt":"2020-03-30T17:11:34","slug":"geotechnical-drilling-reduces-investment-risk","status":"publish","type":"post","link":"https:\/\/www.boartlongyear.com\/fr\/insite\/geotechnical-drilling-reduces-investment-risk\/","title":{"rendered":"Le forage g\u00e9otechnique r\u00e9duit le risque d'investissement"},"content":{"rendered":"
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Cet article a \u00e9t\u00e9 publi\u00e9 dans Foreur national<\/a>.<\/em><\/p>\n<\/div>

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Forage g\u00e9otechnique - Enqu\u00eater, \u00e9valuer, aller de l'avant<\/span><\/span><\/h1><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section>
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\u00c0 certains \u00e9gards, le forage g\u00e9otechnique est comme n'importe quel outil d'investissement intelligent. Cela vous aide \u00e0 \u00e9tudier une opportunit\u00e9 et \u00e0 \u00e9valuer le risque avant de poursuivre l'investissement.<\/p>\n<\/div><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section>

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Bien que je ne sois pas un expert des origines du forage g\u00e9otechnique, je ne peux pas m'emp\u00eacher d'imaginer qu'apr\u00e8s l'effondrement de certaines constructions il y a plusieurs si\u00e8cles, les gens ont commenc\u00e9 \u00e0 s'interroger sur les causes. Ils sont peut-\u00eatre arriv\u00e9s \u00e0 la conclusion qu'ils auraient d\u00fb enqu\u00eater sous la surface avant de commencer la construction, donnant ainsi naissance \u00e0 une nouvelle technologie.<\/p>\n

Quoi qu'il en soit, le forage g\u00e9otechnique est devenu une pratique courante dans le monde entier - et, dans de nombreux cas, une exigence - pour tout investissement majeur dans la construction. Il s'agit d'un moyen relativement \u00e9conomique et extr\u00eamement pr\u00e9cis d'obtenir une image la plus compl\u00e8te possible des conditions de sous-surface de toute grande structure, y compris des b\u00e2timents, des ponts, des barrages, des mines et des plates-formes p\u00e9troli\u00e8res.<\/p>\n

L'\u00e9tude des \u00e9chantillons de sol, des propri\u00e9t\u00e9s physiques et structurelles du sol et des roches, des nappes phr\u00e9atiques, de la contamination de l'environnement, des formations g\u00e9ologiques et m\u00eame de la susceptibilit\u00e9 sismique permet aux ing\u00e9nieurs en g\u00e9otechnique d'\u00e9valuer la stabilit\u00e9 et la pertinence du site de construction propos\u00e9 et de prendre les mesures d'adaptation n\u00e9cessaires. Les autres applications de forage g\u00e9otechnique comprennent l'instrumentation, le carottage de roche et les tests in situ.<\/p>\n<\/div><\/div>

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\u00c9tant donn\u00e9 que les conditions sur le site varient consid\u00e9rablement, la plupart des grands fabricants d\u2019\u00e9quipements produisent une gamme de montages et d\u2019outils r\u00e9pondant aux exigences du march\u00e9.<\/p>\n\n\t<\/blockquote>

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Boart Longyear, par exemple, propose quatre plates-formes polyvalentes adapt\u00e9es au forage g\u00e9otechnique, allant de la longue LX \u2122 4<\/a>\/LX \u2122 6<\/a> au robuste et polyvalent LX \u2122 11<\/a>.<\/p>\n

Chacune comporte des options et une polyvalence permettant de g\u00e9rer les conditions de site r\u00e9elles.<\/p>\n

Les entrepreneurs et les ing\u00e9nieurs g\u00e9otechniques se sont appuy\u00e9s sur le LX \u2122 4<\/a> (anciennement connu sous le nom de DB \u2122 520) depuis plus d'un quart de si\u00e8cle. Au cours de la derni\u00e8re d\u00e9cennie, son \u00abcousin\u00bb l\u00e9g\u00e8rement LX \u2122 6<\/a>, est progressivement devenu la plate-forme de choix pour des applications dans le monde entier comme l\u2019une des meilleures plates-formes de forage les plus polyvalentes de sa taille dans le monde.<\/p>\n

le LX \u2122 6<\/a> est une foreuse polyvalente polyvalente, l\u00e9g\u00e8re et polyvalente con\u00e7ue pour les forages d\u2019investigation g\u00e9otechnique, de construction et d\u2019exploration. Les applications comprennent le carottage filaire et conventionnel, l'\u00e9chantillonnage et les essais non perturb\u00e9s, les travaux g\u00e9ologiques, les forages de consolidation des sols, les forages de puits, les forages \u00e0 la tari\u00e8re, les injections au jet, les micropieux et le clouage des sols.<\/p>\n

Le LX \u2122 4 et le LX \u2122 6<\/a> utilisent la m\u00eame base et sont capables de carottage filaire et conventionnel, ainsi que de m\u00e9thodes de forage DTH, rotatif et \u00e0 la tari\u00e8re. le LX \u2122 6<\/a>offre toutefois un m\u00e2t am\u00e9lior\u00e9 pour une plus grande capacit\u00e9 de profondeur et une t\u00eate de perceuse plus puissante pour un couple et une vitesse accrus.<\/p>\n

La conception de m\u00e2t robuste et la large gamme de t\u00eates de forage \u00e0 LX \u2122 6<\/a> peut fournir jusqu'\u00e0 6 540 Nm (4 824 lb-pi) de couple max. et 800 tr \/ min max. Le retrait est de 55 kN (12 364 lbf), fournissant une solution de forage puissante dans une empreinte au sol petite, l\u00e9g\u00e8re et compacte - seulement 7650 kg (16 856 lb) et moins de 2 m\u00e8tres de large, offrant une excellente accessibilit\u00e9 au site.<\/p>\n

Un puissant moteur diesel \u00e0 refroidissement par air Deutz D914 L04 produit 53 kW (71 ch) \u00e0 2 300 tr \/ min.<\/p>\n

Parce qu\u2019il est con\u00e7u pour une installation rapide sur site, une mobilit\u00e9 sup\u00e9rieure et des performances puissantes, le LX \u2122 6<\/a> offre une productivit\u00e9 accrue. Les changements rapides et faciles entre carottage filaire, forage DTH, forage affleurant rotatif et forage \u00e0 la tari\u00e8re offrent une excellente flexibilit\u00e9 d'une plate-forme de forage \u00e0 l'autre. le LX \u2122 6<\/a> est \u00e9galement disponible avec un compteur de coups automatique SPT et num\u00e9rique.<\/p>\n

Outre des performances exceptionnelles et une grande fiabilit\u00e9, le LX \u2122 6<\/a> est con\u00e7u avec un ensemble de fonctions de s\u00e9curit\u00e9 int\u00e9gr\u00e9es. Celles-ci incluent un panneau de commande intuitif, une cage de s\u00e9curit\u00e9 avec interrupteur \u00e0 charni\u00e8re sans sabotage et de multiples arr\u00eats d'urgence. La cage de s\u00e9curit\u00e9 garantit que les foreuses restent \u00e0 une distance s\u00e9curitaire du train de tiges, tandis que la faible vitesse et la faible rotation du couple assurent une gestion s\u00fbre de la tige. En outre, les puissantes chenilles en acier et le LX \u2122 6<\/a>La conception verticale de ce v\u00e9lo assure la mobilit\u00e9 et la stabilit\u00e9 sur les terrains difficiles et les formations in\u00e9gales.<\/p>\n<\/div>

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Les principaux entrepreneurs ont trouv\u00e9 le LX \u2122 6<\/a> d'\u00eatre un membre vital et fiable de leurs flottes alors qu'ils s'attaquent \u00e0 certains des plus grands projets du monde. Leurs pr\u00e9cieux commentaires aident Boart Longyear \u00e0 am\u00e9liorer continuellement la plate-forme et ses nombreuses fonctionnalit\u00e9s.<\/p>\n<\/div><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section>

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\u00c0 Duba\u00ef, par exemple, le LX \u2122 6<\/a> est devenu un bourreau de travail fiable alors que le projet massif des Palm Islands continue de prendre forme sur plusieurs \u00eeles artificielles du golfe Persique. Cependant, en raison de l'humidit\u00e9 extr\u00eame et de la proximit\u00e9 de la mer, le contractant s'est inqui\u00e9t\u00e9 de la vuln\u00e9rabilit\u00e9 \u00e0 la rouille. La m\u00e9tallisation et la peinture sp\u00e9ciale ont rapidement r\u00e9pondu \u00e0 ces pr\u00e9occupations et ont rendu les plates-formes totalement r\u00e9sistantes aux conditions environnementales.<\/p>\n

Ailleurs, les entrepreneurs ne font pas que pousser la LX \u2122 6<\/a> \u00e0 ses limites recommand\u00e9es sur une base r\u00e9guli\u00e8re, mais vont parfois au-del\u00e0. Par exemple, un contractant \u00e0 Singapour a indiqu\u00e9 qu'il avait men\u00e9 avec succ\u00e8s une micropile avec un diam\u00e8tre de 350 mm - bien au-del\u00e0 du maximum recommand\u00e9 de 220 mm.<\/p>\n

L'\u00e9quipe de Boart Longyear a \u00e9t\u00e9 agr\u00e9ablement surprise - mais peut-\u00eatre pas trop surprise. Apr\u00e8s tout, le LX \u2122 6<\/a> continue \u00e0 faire ses preuves tous les jours.<\/p>\n<\/div><\/div>

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Vous souhaitez en savoir plus sur les appareils de forage polyvalents pour le forage g\u00e9otechnique? Lisez \u00e0 propos de la ligne LX de Boart Longyear.<\/a><\/p>\n<\/div><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":66,"featured_media":18532,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[139],"tags":[12,189,190],"class_list":["post-18524","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-mining","tag-multipurpose","tag-geotechnical","tag-informed-opinion","insitetype-drilling-innovation","insitetype-field-experts"],"acf":[],"canto_acf_fields":"","yoast_head":"\nGeotechnical Drilling Reduces Investment Risk - Boart Longyear<\/title>\n<meta name=\"description\" content=\"Geotechnical drilling 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