{"id":18644,"date":"2020-04-06T17:00:31","date_gmt":"2020-04-06T15:00:31","guid":{"rendered":"https:\/\/www.icop.it\/secteurs\/microtunnel-et-direct-pipe\/pulling-back\/"},"modified":"2020-11-26T16:08:44","modified_gmt":"2020-11-26T15:08:44","slug":"pulling-back","status":"publish","type":"page","link":"https:\/\/www.icop.it\/fr\/secteurs\/microtunnel-et-direct-pipe\/pulling-back\/","title":{"rendered":"Pulling back"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_one_half  avia-builder-el-first  container_wrap sidebar_left' style='  height: 351px; max-width: 1280px; margin: 0 auto;' ><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_left' style=' '  ><div class='container' ><div class='template-page content  av-content-small units'><div class='post-entry post-entry-type-page post-entry-18644'><div class='entry-content-wrapper clearfix'>\n<div class=\"flex_column av_one_half  flex_column_div av-zero-column-padding first  avia-builder-el-1  el_after_av_layerslider  el_before_av_one_half  avia-builder-el-first  \" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock  '   itemprop=\"text\" ><h4><strong>PULLING BACK<\/strong><\/h4>\n<p class=\"p1\">Le <strong>Pulling back<\/strong> est une solution technique sp\u00e9cifique qui consiste \u00e0 r\u00e9aliser des <strong>microtunnels sans puits d&rsquo;arriv\u00e9e<\/strong>. Le bouclier de forage, pouss\u00e9 depuis le puits de d\u00e9part, avance le long de la trajectoire du projet, pouss\u00e9 par l\u2019assemblage des \u00e9l\u00e9ments v\u00e9rin\u00e9s \u00e0 l\u2019avancement jusqu&rsquo;\u00e0 atteindre l\u2019extr\u00e9mit\u00e9 du tracer. Une proc\u00e9dure sp\u00e9cifique de r\u00e9cup\u00e9ration est donc lanc\u00e9\u00a0: une fois le forage termin\u00e9, le bouclier de forage est lib\u00e9r\u00e9 de la t\u00eate d&rsquo;excavation et du kit d&rsquo;extension et, par la suite, est gliss\u00e9 \u00e0 l&rsquo;int\u00e9rieur de la canalisation en b\u00e9ton arm\u00e9, \u00e0 l&rsquo;aide d&rsquo;un treuil install\u00e9 dans le puits de d\u00e9part, o\u00f9 il est r\u00e9cup\u00e9r\u00e9.<\/p>\n<p class=\"p1\">Tout cela est possible en utilisant une <strong>fraise de forage particuli\u00e8re, \u00e9quip\u00e9e d&rsquo;un double bouclier<\/strong>.<\/p>\n<p class=\"p1\">Le premier bouclier (interne) a un diam\u00e8tre l\u00e9g\u00e8rement inf\u00e9rieur au diam\u00e8tre interne des \u00e9l\u00e9ments pr\u00e9fabriqu\u00e9 en b\u00e9ton arm\u00e9, tandis que le second bouclier (externe) a un diam\u00e8tre approximativement \u00e9gal au diam\u00e8tre externe. Ainsi, le premier bouclier peut glisser \u00e0 l&rsquo;int\u00e9rieur du tunnel puis \u00eatre extrait vers le puits de d\u00e9part tandis que le deuxi\u00e8me bouclier et la t\u00eate de fraisage restent en place.<\/p>\n<\/div><\/section><\/div>\n<div class=\"flex_column av_one_half  flex_column_div av-zero-column-padding   avia-builder-el-3  el_after_av_one_half  el_before_av_one_full  \" style='border-radius:0px; '><div  class='avia-image-container  av-styling-    avia-builder-el-4  avia-builder-el-no-sibling  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img class='avia_image' src='https:\/\/www.icop.it\/wp-content\/uploads\/2020\/04\/14_Pulling-back-3.jpg' alt='' title='14_Pulling back (3)' height=\"566\" width=\"566\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-5  el_after_av_one_half  avia-builder-el-last  column-top-margin\" style='border-radius:0px; '><p><div  style='padding-bottom:10px; color:#172f62;' class='av-special-heading av-special-heading-h2 custom-color-heading   avia-builder-el-6  el_before_av_masonry_entries  avia-builder-el-no-sibling  '><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >Fiches des metiers<\/h2><div class='special-heading-border'><div class='special-heading-inner-border' style='border-color:#172f62'><\/div><\/div><\/div><br \/>\n<div style='display:none'>18644<\/div><div id='unidea-filter-paesi'><span class='unidea-filter-paesi-all unidea-filter-paesi-active'>Tout<\/span> \/ <span class='unidea-filter-paesi-item ' data-filterpaese='Italie'>Italie<\/span><\/div><div id='av-masonry-1' class='av-masonry  noHover av-fixed-size av-large-gap av-hover-overlay-active av-masonry-animation-active av-masonry-col-3 av-caption-always av-caption-style-    '  ><div class='av-masonry-container isotope av-js-disabled ' ><div class='av-masonry-entry isotope-item av-masonry-item-no-image all_sort microtunnel-direct-pipe-fr_sort  pulling-back-fr_sort '><\/div><a href=\"https:\/\/www.icop.it\/fr\/works\/1364-bologne-gare-centrale-italie\/\" data-settore='Microtunnel et direct pipe|Pulling Back' data-paese='Italie' id='av-masonry-1-item-19097' data-av-masonry-item='19097' class='av-masonry-entry isotope-item post-19097 prodotti type-prodotti status-publish has-post-thumbnail hentry settori-microtunnel-direct-pipe-fr settori-pulling-back-fr paesi-italie all_sort microtunnel-direct-pipe-fr_sort  pulling-back-fr_sort  av-masonry-item-with-image ' title=\"33_Bologna_COPERTINA\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"  ><div class='av-inner-masonry-sizer'><\/div><figure class='av-inner-masonry main_color'><div class=\"av-masonry-outerimage-container\"><div class=\"av-masonry-image-container\" style=\"background-image: url(https:\/\/www.icop.it\/wp-content\/uploads\/2020\/07\/33_Bologna_COPERTINA-529x705.jpg);\" title=\"33_Bologna_COPERTINA\" ><\/div><\/div><figcaption class='av-inner-masonry-content site-background'><div class='av-inner-masonry-content-pos'><div class='av-inner-masonry-content-pos-content'><div class='avia-arrow'><\/div><h3 class='av-masonry-entry-title entry-title '  itemprop=\"headline\" >1364 &#8211; Bologne &#8211; Gare Centrale (Italie)<\/h3><\/div><\/div><\/figcaption><\/figure><\/a><!--end av-masonry entry--><a href=\"https:\/\/www.icop.it\/fr\/works\/1348-rome-s-giovanni-t3-italie\/\" data-settore='Microtunnel et direct pipe|Pulling Back' data-paese='Italie' id='av-masonry-1-item-19106' data-av-masonry-item='19106' class='av-masonry-entry isotope-item post-19106 prodotti type-prodotti status-publish has-post-thumbnail hentry settori-microtunnel-direct-pipe-fr settori-pulling-back-fr paesi-italie all_sort microtunnel-direct-pipe-fr_sort  pulling-back-fr_sort  av-masonry-item-with-image ' title=\"38_RomaSGiovanni_COPERTINA\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"  ><div class='av-inner-masonry-sizer'><\/div><figure class='av-inner-masonry main_color'><div class=\"av-masonry-outerimage-container\"><div class=\"av-masonry-image-container\" style=\"background-image: url(https:\/\/www.icop.it\/wp-content\/uploads\/2020\/07\/38_RomaSGiovanni_COPERTINA-705x358.jpg);\" title=\"38_RomaSGiovanni_COPERTINA\" ><\/div><\/div><figcaption class='av-inner-masonry-content site-background'><div class='av-inner-masonry-content-pos'><div class='av-inner-masonry-content-pos-content'><div class='avia-arrow'><\/div><h3 class='av-masonry-entry-title entry-title '  itemprop=\"headline\" >1348 &#8211; Rome &#8211; S. Giovanni T3 (Italie)<\/h3><\/div><\/div><\/figcaption><\/figure><\/a><!--end av-masonry entry--><\/div><\/div><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":18625,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.icop.it\/fr\/wp-json\/wp\/v2\/pages\/18644"}],"collection":[{"href":"https:\/\/www.icop.it\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.icop.it\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.icop.it\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.icop.it\/fr\/wp-json\/wp\/v2\/comments?post=18644"}],"version-history":[{"count":4,"href":"https:\/\/www.icop.it\/fr\/wp-json\/wp\/v2\/pages\/18644\/revisions"}],"predecessor-version":[{"id":18817,"href":"https:\/\/www.icop.it\/fr\/wp-json\/wp\/v2\/pages\/18644\/revisions\/18817"}],"up":[{"embeddable":true,"href":"https:\/\/www.icop.it\/fr\/wp-json\/wp\/v2\/pages\/18625"}],"wp:attachment":[{"href":"https:\/\/www.icop.it\/fr\/wp-json\/wp\/v2\/media?parent=18644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}