{"id":409,"date":"2016-10-21T10:46:47","date_gmt":"2016-10-21T08:46:47","guid":{"rendered":"https:\/\/www.ccpitaliana.it\/dreni\/?lang=fr"},"modified":"2017-03-27T11:28:55","modified_gmt":"2017-03-27T09:28:55","slug":"drains","status":"publish","type":"page","link":"https:\/\/www.ccpitaliana.it\/fr\/drains\/","title":{"rendered":"Drains"},"content":{"rendered":"

[vc_row][vc_column width=”1\/1″][vc_single_image media=”126″ media_poster=”yes” media_width_percent=”60″ alignment=”center”][vc_column_text]<\/p>\n

Drains<\/h1>\n

[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/2″][vc_column_text]DESCRIPTION DE LA TECHNOLOGIE<\/u><\/strong><\/p>\n

Les drains sous-horizontaux sont des \u00e9l\u00e9ments drainants de petit diam\u00e8tre qui sont plac\u00e9s dans le corps de la pente glissante ou sur le front de l\u2019excavation afin d\u2019\u00e9liminer l\u2019exc\u00e8s d\u2019eau qui cause la d\u00e9t\u00e9rioration de la solidit\u00e9 et de la consistance du sol, permettant donc de redonner de la stabilit\u00e9 et d\u2019assainir la pente ou le front.<\/p>\n

Ils sont constitu\u00e9s de tubes en PVC micro perfor\u00e9s couverts ou non d\u2019une \u00ab\u00a0chaussette\u00a0\u00bb en g\u00e9otextile.
\nIls sont appel\u00e9s sous-horizontaux parce qu\u2019ils sont pos\u00e9s avec une pente l\u00e9g\u00e8re par rapport \u00e0 l\u2019axe horizontal.
\nLes techniques de forage et de pose de drains doivent \u00eatre les plus appropri\u00e9es \u00e0 la nature du sol \u00e0 traverser.<\/p>\n

En r\u00e8gle g\u00e9n\u00e9rale, les forages sont effectu\u00e9s comme suit\u00a0:<\/p>\n

– \u00e0 roto-percussion avec un marteau fond-de-trou et avec circulation de l\u2019air comprim\u00e9 ;<\/p>\n

– \u00e0 rotation \u00e0 l\u2019aide de batteries de tiges h\u00e9lico\u00efdales ou d\u2019un outil de forage adapt\u00e9.<\/p>\n

Les \u00e9quipements n\u00e9cessaires \u00e0 la r\u00e9alisation de drains sont essentiellement les suivants\u00a0:<\/p>\n

– sonde foreuse sur chenilles pour op\u00e9rations de forage\u00a0;<\/p>\n

– dans le cas de forage \u00e0 roto-percussion\u00a0: batterie de tiges de diam\u00e8tre identique au diam\u00e8tre du trou pr\u00e9vu et portant \u00e0 son extr\u00e9mit\u00e9 inf\u00e9rieure l\u2019outil de forage (marteau fond-de-trou)\u00a0;<\/p>\n

\u2013 dans le cas de forage \u00e0 rotation\u00a0: batterie d’h\u00e9lices dont le diam\u00e8tre int\u00e9rieur est identique au diam\u00e8tre du trou pr\u00e9vu.[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_column_text]SCH\u00c9MA OP\u00c9RATIONNEL<\/u><\/strong><\/p>\n

La r\u00e9alisation d\u2019un drain comprend les phases d\u2019ex\u00e9cution suivantes :<\/p>\n

PHASE 1<\/strong> Positionnement de la sonde foreuse et d\u00e9but de forage<\/u><\/p>\n

La sonde de forage est d\u00e9plac\u00e9e par l\u2019op\u00e9rateur afin d\u2019aligner l\u2019axe des tiges de forage sur le piquet.<\/p>\n

Une fois la sonde en place, l\u2019op\u00e9rateur d\u00e9place le m\u00e2t de la sonde de mani\u00e8re \u00e0 atteindre l\u2019angle requis par le projet.<\/p>\n

Le forage consiste \u00e0 ins\u00e9rer dans le sol une batterie de tiges ou de \u00e0 rotation ou \u00e0 roto-percussion selon le type et les caract\u00e9ristiques du sol \u00e0 traverser.<\/p>\n

PHASE 2<\/strong> R\u00c9ALISATION DU DRAIN<\/u><\/p>\n

<\/u>Une fois le forage termin\u00e9, il est n\u00e9cessaire d\u2019enlever tous les d\u00e9bris qui se trouvent dans le trou, puis d\u2019ins\u00e9rer dans le trou le tube microfissure, qui doit \u00eatre conforme aux plans de conception.<\/p>\n

PHASE 3<\/strong> INJECTION<\/u><\/p>\n

<\/u>Une fois termin\u00e9e la phase de pose du tube microfissure, on proc\u00e8de au scellement de la cavit\u00e9 annulaire tubulaire qui se trouve entre les parois du trou et la t\u00eate du drain de fa\u00e7on \u00e0 permettre un flux r\u00e9gulier de l\u2019eau dans le tuyau en PVC.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/1″][vc_gallery el_id=”gallery-139086″ medias=”127,126,125″ gutter_size=”3″ screen_lg=”1000″ screen_md=”600″ screen_sm=”480″ images_size=”four-three” single_overlay_opacity=”50″ single_padding=”2″][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"

[vc_row][vc_column width=”1\/1″][vc_single_image media=”126″ media_poster=”yes” media_width_percent=”60″ alignment=”center”][vc_column_text] Drains [\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/2″][vc_column_text]DESCRIPTION DE LA TECHNOLOGIE Les drains sous-horizontaux sont des \u00e9l\u00e9ments drainants de […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"class_list":["post-409","page","type-page","status-publish","hentry"],"yoast_head":"\nDrains<\/title>\n<meta name=\"description\" content=\"Les drains sous-horizontaux sont des \u00e9l\u00e9ments drainants de petit diam\u00e8tre qui sont plac\u00e9s dans le corps de la pente glissante ou sur le front de l\u2019excavation...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ccpitaliana.it\/fr\/drains\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Drains - 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