{"id":4720,"date":"2025-11-04T10:06:53","date_gmt":"2025-11-04T10:06:53","guid":{"rendered":"https:\/\/eurohinca.com\/?p=4720"},"modified":"2026-05-13T10:41:48","modified_gmt":"2026-05-13T10:41:48","slug":"quelle-pression-de-chambre-et-quel-conditionnement-utiliser-dans-les-sols-satures-et-mixtes","status":"publish","type":"post","link":"https:\/\/eurohinca.com\/fr\/que-presion-de-camara-y-acondicionamiento-usar-en-suelos-saturados-y-mixtos\/","title":{"rendered":"Quelle pression de chambre et quel conditionnement (EPB\/hydro-bouclier) utiliser dans les sols satur\u00e9s et mixtes ?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"4720\" class=\"elementor elementor-4720\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d6327ef e-flex e-con-boxed e-con e-parent\" data-id=\"d6327ef\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0d3dfe2 elementor-widget elementor-widget-text-editor\" data-id=\"0d3dfe2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"101\" data-end=\"707\">Au <strong data-start=\"120\" data-end=\"201\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/eperonnage-de-tuyaux-2\/\" target=\"_new\" rel=\"noopener\" data-start=\"122\" data-end=\"199\">le fon\u00e7age de tuyaux (microtunnelage)<\/a><\/strong>\u00a0\u00e0 <strong data-start=\"206\" data-end=\"227\">pression de la chambre<\/strong> doit \u00e9quilibrer les <strong data-start=\"247\" data-end=\"278\">pression effective de la terre<\/strong> plus le <strong data-start=\"286\" data-end=\"306\">pression interstitielle<\/strong> \u00e0 la fa\u00e7ade avant ; il est ensuite ajust\u00e9 sur place avec la <strong data-start=\"360\" data-end=\"382\">bilan foncier<\/strong>, Les <strong data-start=\"388\" data-end=\"406\">pouss\u00e9e\/couple<\/strong> et la <strong data-start=\"412\" data-end=\"428\">auscultation<\/strong>. Le choix entre <strong data-start=\"448\" data-end=\"455\">EPB<\/strong> y <strong data-start=\"458\" data-end=\"480\">hydro-bouclier\/Slurry<\/strong> est donn\u00e9e par <strong data-start=\"496\" data-end=\"513\">perm\u00e9abilit\u00e9<\/strong>, <strong data-start=\"515\" data-end=\"532\">granulom\u00e9trie<\/strong> y <strong data-start=\"535\" data-end=\"553\">nappe phr\u00e9atique<\/strong>; (mousses, bentonite, polym\u00e8res) est calibr\u00e9e pour garantir que <strong data-start=\"633\" data-end=\"652\">un soutien stable<\/strong>, <strong data-start=\"654\" data-end=\"675\">transportabilit\u00e9<\/strong> y <strong data-start=\"678\" data-end=\"706\">le contr\u00f4le de l'implantation<\/strong>.<\/p><h2 data-start=\"714\" data-end=\"764\">1) Point de d\u00e9part de la pression de la chambre<\/h2><ul data-start=\"765\" data-end=\"1508\"><li data-start=\"765\" data-end=\"1378\"><p data-start=\"767\" data-end=\"1378\"><strong data-start=\"767\" data-end=\"786\">Mod\u00e8le initial :<\/strong> <span class=\"katex\"><span class=\"katex-mathml\">pca\u02camara\u2248\u03c3v,front\u2032+uwp_text{camera} \\approx \\sigma\u2019_{v,\\text{front}} + u_w<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">p<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord text mtight\"><span class=\"mord mtight\">c<\/span><span class=\"mord accent mtight\"><span class=\"vlist-t\"><span class=\"mord mtight\">a<\/span><span class=\"accent-body\"><span class=\"mord mtight\">\u02ca<\/span><\/span><\/span><\/span><span class=\"mord mtight\">mara<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">\u2248<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">\u03c3<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">v<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord text mtight\">avant<\/span><\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">\u2032<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">u<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">w<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>, avec des corrections par <strong data-start=\"869\" data-end=\"882\">couverture<\/strong>, <strong data-start=\"884\" data-end=\"899\">surcharges<\/strong> y <strong data-start=\"902\" data-end=\"913\">surcoupe<\/strong>; Le niveau d'exploitation se situe autour de cette valeur, avec des marges faibles (par exemple, le taux de change de l'euro). <strong data-start=\"990\" data-end=\"1008\">\u00b10,05-0,20 bar<\/strong>), en fonction de la r\u00e9ponse du terrain et de la sensibilit\u00e9 de l'environnement. Pour contraster les crit\u00e8res de calcul et les limites op\u00e9rationnelles, vous pouvez vous appuyer sur l'outil <strong data-start=\"1162\" data-end=\"1186\">Recommandations de la DAUB<\/strong> front de pression dans les sols meubles et dans les <a href=\"https:\/\/www.daub-ita.de\/fileadmin\/documents\/daub\/gtcrec1\/2016-10_DAUB_Recommendations_for_Face_Support_Pressure_Calculations_for_Shield_Tunnelling_in_Soft_Ground.pdf?utm_source=chatgpt.com\"><strong data-start=\"1234\" data-end=\"1284\">Sp\u00e9cification BTS\/ICE pour la construction de tunnels (3\u00e8me \u00e9dition)<\/strong><\/a>, qui refl\u00e8tent de bonnes pratiques d'exploitation et de contr\u00f4le.<\/p><\/li><li data-start=\"1379\" data-end=\"1508\"><p data-start=\"1381\" data-end=\"1508\"><strong data-start=\"1381\" data-end=\"1405\">Validation sur le terrain :<\/strong> recherche <strong data-start=\"1413\" data-end=\"1428\">solde \u2248 1<\/strong>, pressions stables et accord avec les <strong data-start=\"1468\" data-end=\"1507\">pi\u00e9zom\u00e8tres\/aspectrom\u00e8tres\/topographie<\/strong>.<\/p><\/li><\/ul><h2 data-start=\"1515\" data-end=\"1560\">2) EPB ou hydroshield (d\u00e9cision rapide)<\/h2><ul data-start=\"1561\" data-end=\"2064\"><li data-start=\"1561\" data-end=\"1706\"><p data-start=\"1563\" data-end=\"1706\"><strong data-start=\"1563\" data-end=\"1570\">EPB<\/strong> \u2192 silts\/argiles et <strong data-start=\"1590\" data-end=\"1613\">sables fins-moyens<\/strong> (perm\u00e9abilit\u00e9 faible \u00e0 moyenne). Stabilise le front avec le <strong data-start=\"1670\" data-end=\"1703\">ses propres d\u00e9tritus conditionn\u00e9s<\/strong>.<\/p><\/li><li data-start=\"1707\" data-end=\"2064\"><p data-start=\"1709\" data-end=\"2064\"><strong data-start=\"1709\" data-end=\"1731\">Hydroshield\/Slurry<\/strong> \u2192 <strong data-start=\"1734\" data-end=\"1761\">nettoyer les sables et graviers<\/strong> (k \u00e9lev\u00e9) et <strong data-start=\"1773\" data-end=\"1787\">Haute NF<\/strong>; maintient le soutien avec <strong data-start=\"1813\" data-end=\"1839\">suspension sous pression<\/strong> et la formation des <strong data-start=\"1855\" data-end=\"1870\">g\u00e2teau de filtration<\/strong>. Une orientation publique claire sur le contr\u00f4le au sol dans le cadre de l'EPB est le document de la Commission europ\u00e9enne. <a href=\"https:\/\/www.cedd.gov.hk\/filemanager\/eng\/content_526\/er298links.pdf?utm_source=chatgpt.com\"><strong data-start=\"1948\" data-end=\"1980\">Gouvernement de Hong Kong (CEDD)<\/strong><\/a>, utile pour les calculs et les audits op\u00e9rationnels.<\/p><\/li><\/ul><h2 data-start=\"2071\" data-end=\"2129\">3) Conditionnement et signaux de bonne performance<\/h2><p data-start=\"2131\" data-end=\"2170\"><strong data-start=\"2131\" data-end=\"2168\">EPB (front plastique et pompable)<\/strong><\/p><ul data-start=\"2171\" data-end=\"2521\"><li data-start=\"2171\" data-end=\"2277\"><p data-start=\"2173\" data-end=\"2277\"><strong data-start=\"2173\" data-end=\"2186\">Additifs :<\/strong> mousses (FIR\/FER) + polym\u00e8res\/bentonite pour r\u00e9duire le couple, <strong data-start=\"2243\" data-end=\"2253\">sceller<\/strong> et donner <strong data-start=\"2260\" data-end=\"2274\">thixotropie<\/strong>.<\/p><\/li><li data-start=\"2278\" data-end=\"2384\"><p data-start=\"2280\" data-end=\"2384\"><strong data-start=\"2280\" data-end=\"2299\">Indicateurs OK :<\/strong> pression stable, <strong data-start=\"2317\" data-end=\"2345\">pousser\/couper sans pointes<\/strong>, un rendement homog\u00e8ne, <strong data-start=\"2366\" data-end=\"2381\">solde \u2248 1<\/strong>.<\/p><\/li><li data-start=\"2385\" data-end=\"2521\"><p data-start=\"2387\" data-end=\"2521\"><strong data-start=\"2387\" data-end=\"2407\">Param\u00e8tres typiques :<\/strong> mati\u00e8res s\u00e8ches\/arbres \u2192 monter <strong data-start=\"2436\" data-end=\"2452\">dosage<\/strong>; pertes de pression \u2192 am\u00e9liorer <strong data-start=\"2484\" data-end=\"2495\">\u00e9tanch\u00e9it\u00e9<\/strong> y <strong data-start=\"2498\" data-end=\"2509\">lubrification<\/strong> p\u00e9rim\u00e8tre.<\/p><\/li><\/ul><p data-start=\"2523\" data-end=\"2587\"><strong data-start=\"2523\" data-end=\"2585\">Hydroshield\/Slurry (g\u00e2teau stable et transmission de la pression)<\/strong><\/p><ul data-start=\"2588\" data-end=\"3019\"><li data-start=\"2588\" data-end=\"2726\"><p data-start=\"2590\" data-end=\"2726\"><strong data-start=\"2590\" data-end=\"2605\">Suspension :<\/strong> bentonite (\u00b1 polym\u00e8res) avec <strong data-start=\"2634\" data-end=\"2646\">densit\u00e9<\/strong> y <strong data-start=\"2649\" data-end=\"2663\">viscosit\u00e9<\/strong> objectif ; contr\u00f4le de <strong data-start=\"2685\" data-end=\"2694\">niveau<\/strong> y <strong data-start=\"2697\" data-end=\"2723\">perte de fuite perte<\/strong>.<\/p><\/li><li data-start=\"2727\" data-end=\"2863\"><p data-start=\"2729\" data-end=\"2863\"><strong data-start=\"2729\" data-end=\"2748\">Indicateurs OK :<\/strong> transmission stable de la pression, <strong data-start=\"2781\" data-end=\"2815\">des d\u00e9bits d'aller et de retour constants<\/strong>, une faible infiltration et des tassements contr\u00f4l\u00e9s.<\/p><\/li><li data-start=\"2864\" data-end=\"3019\"><p data-start=\"2866\" data-end=\"3019\"><strong data-start=\"2866\" data-end=\"2886\">Param\u00e8tres typiques :<\/strong> pertes \u2192 <strong data-start=\"2898\" data-end=\"2924\">augmentation de la pression\/densit\u00e9<\/strong> et optimiser <strong data-start=\"2937\" data-end=\"2945\">g\u00e2teau<\/strong>; retour instable \u2192 contr\u00f4le <strong data-start=\"2975\" data-end=\"2987\">circuit<\/strong>, <strong data-start=\"2989\" data-end=\"3003\">dessablage<\/strong> y <strong data-start=\"3006\" data-end=\"3018\">rh\u00e9ologie<\/strong>.<\/p><\/li><\/ul><h2 data-start=\"3026\" data-end=\"3077\">4) Tableau rapide pour les sols satur\u00e9s et mixtes<\/h2><div class=\"_tableContainer_1rjym_1\"><div class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\"><table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"3079\" data-end=\"3854\"><thead data-start=\"3079\" data-end=\"3182\"><tr data-start=\"3079\" data-end=\"3182\"><th data-start=\"3079\" data-end=\"3101\" data-col-size=\"sm\">Condition dominante<\/th><th data-start=\"3101\" data-end=\"3121\" data-col-size=\"sm\">M\u00e9thode pr\u00e9f\u00e9r\u00e9e<\/th><th data-start=\"3121\" data-end=\"3151\" data-col-size=\"md\">Cl\u00e9s de pression de la chambre<\/th><th data-start=\"3151\" data-end=\"3182\" data-col-size=\"md\">Conditionnement principal<\/th><\/tr><\/thead><tbody data-start=\"3201\" data-end=\"3854\"><tr data-start=\"3201\" data-end=\"3360\"><td data-start=\"3201\" data-end=\"3245\" data-col-size=\"sm\"><strong data-start=\"3203\" data-end=\"3244\">Sables fins satur\u00e9s (k faible-moyen)<\/strong><\/td><td data-start=\"3245\" data-end=\"3255\" data-col-size=\"sm\"><strong data-start=\"3247\" data-end=\"3254\">EPB<\/strong><\/td><td data-start=\"3255\" data-end=\"3315\" data-col-size=\"md\"><span class=\"katex\"><span class=\"katex-mathml\">p\u2248\u03c3\u2032+uwp \\approx \\sigma\u2019 + u_w<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">p<\/span><span class=\"mrel\">\u2248<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">\u03c3<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">\u2032<\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">u<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">w<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>; la stabilit\u00e9 par compactage<\/td><td data-start=\"3315\" data-end=\"3360\" data-col-size=\"md\">Mousses + polym\u00e8res (\u00e9tanch\u00e9it\u00e9\/plasticit\u00e9)<\/td><\/tr><tr data-start=\"3361\" data-end=\"3530\"><td data-start=\"3361\" data-end=\"3400\" data-col-size=\"sm\"><strong data-start=\"3363\" data-end=\"3399\">Sables \/ graviers propres (haut k)<\/strong><\/td><td data-start=\"3400\" data-end=\"3418\" data-col-size=\"sm\"><strong data-start=\"3402\" data-end=\"3417\">Hydroshield<\/strong><\/td><td data-start=\"3418\" data-end=\"3467\" data-col-size=\"md\"><span class=\"katex\"><span class=\"katex-mathml\">p\u2273\u03c3\u2032+uwp \\gtrsim \\sigma\u2019 + u_w<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">p<\/span><span class=\"mrel amsrm\">\u2273<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">\u03c3<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">\u2032<\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">u<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">w<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> pour \u00e9viter l'afflux d'argent<\/td><td data-start=\"3467\" data-end=\"3530\" data-col-size=\"md\">Bentonite + contr\u00f4le de la densit\u00e9\/viscosit\u00e9 ; <strong data-start=\"3513\" data-end=\"3528\">g\u00e2teau de filtration<\/strong><\/td><\/tr><tr data-start=\"3531\" data-end=\"3699\"><td data-start=\"3531\" data-end=\"3571\" data-col-size=\"sm\"><strong data-start=\"3533\" data-end=\"3570\">Sols mixtes (strates altern\u00e9es)<\/strong><\/td><td data-start=\"3571\" data-end=\"3600\" data-col-size=\"sm\"><strong data-start=\"3573\" data-end=\"3586\">EPB mixte<\/strong> o <strong data-start=\"3589\" data-end=\"3599\">Boues<\/strong><\/td><td data-start=\"3600\" data-end=\"3651\" data-col-size=\"md\"><span class=\"katex\"><span class=\"katex-mathml\">pp<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">p<\/span><\/span><\/span><\/span> variable par strate ; suivi des transitions<\/td><td data-start=\"3651\" data-end=\"3699\" data-col-size=\"md\">Ajustement dynamique mousse\/boue ; modes mixtes<\/td><\/tr><tr data-start=\"3700\" data-end=\"3854\"><td data-start=\"3700\" data-end=\"3737\" data-col-size=\"sm\"><strong data-start=\"3702\" data-end=\"3736\">NF tr\u00e8s \u00e9lev\u00e9 \/ environnement sensible<\/strong><\/td><td data-start=\"3737\" data-end=\"3755\" data-col-size=\"sm\"><strong data-start=\"3739\" data-end=\"3754\">Hydroshield<\/strong><\/td><td data-start=\"3755\" data-end=\"3801\" data-col-size=\"md\">Contr\u00f4le pr\u00e9cis des <strong data-start=\"3773\" data-end=\"3800\">niveau de pression\/r\u00e9servoir<\/strong><\/td><td data-start=\"3801\" data-end=\"3854\" data-col-size=\"md\">Densit\u00e9 et perte de filtration hautement contr\u00f4l\u00e9es<\/td><\/tr><\/tbody><\/table><\/div><\/div><p data-start=\"3856\" data-end=\"3886\"><em data-start=\"3856\" data-end=\"3886\">(k : perm\u00e9abilit\u00e9 du sol)<\/em><\/p><h2 data-start=\"3893\" data-end=\"3947\">5) Bonnes pratiques pour ne pas inciter \u00e0 l'installation<\/h2><ol data-start=\"3948\" data-end=\"4335\"><li data-start=\"3948\" data-end=\"4045\"><p data-start=\"3951\" data-end=\"4045\"><strong data-start=\"3951\" data-end=\"3975\">Points de consigne et seuils<\/strong> (\u00b1\u0394p) d\u00e9fini avant le d\u00e9marrage ; rampes douces lors de la variation de la pression.<\/p><\/li><li data-start=\"4046\" data-end=\"4114\"><p data-start=\"4049\" data-end=\"4114\"><strong data-start=\"4049\" data-end=\"4082\">Auscultation et cl\u00f4ture du bilan<\/strong> (volume excav\u00e9 \u2194 retour).<\/p><\/li><li data-start=\"4115\" data-end=\"4191\"><p data-start=\"4118\" data-end=\"4191\"><strong data-start=\"4118\" data-end=\"4140\">G\u00e9rer la rh\u00e9ologie<\/strong> (mousses\/boues) et <strong data-start=\"4159\" data-end=\"4170\">lubrification<\/strong> selon la strate.<\/p><\/li><li data-start=\"4192\" data-end=\"4335\"><p data-start=\"4195\" data-end=\"4335\"><strong data-start=\"4195\" data-end=\"4212\">\u00c9ventualit\u00e9s<\/strong>perte de pression \u2192 arr\u00eat, \u00e9tanch\u00e9it\u00e9, injection, red\u00e9marrage ; surpression \u2192 d\u00e9charge contr\u00f4l\u00e9e et v\u00e9rification de la d\u00e9formation.<\/p><\/li><\/ol><h2 data-start=\"4342\" data-end=\"4388\">6) Ce qu'il faut envoyer pour que nous puissions affiner votre installation<\/h2><ul data-start=\"4389\" data-end=\"4598\"><li data-start=\"4389\" data-end=\"4471\"><p data-start=\"4391\" data-end=\"4471\"><strong data-start=\"4391\" data-end=\"4408\">Stratigraphie<\/strong> avec <strong data-start=\"4413\" data-end=\"4418\">k<\/strong> y <strong data-start=\"4421\" data-end=\"4427\">NF<\/strong>, <strong data-start=\"4429\" data-end=\"4442\">DN\/L\/Rmin<\/strong>, et les surcharges.<\/p><\/li><li data-start=\"4472\" data-end=\"4541\"><p data-start=\"4474\" data-end=\"4541\">Restrictions environnementales (fen\u00eatres, turbidit\u00e9\/limites de rejet).<\/p><\/li><li data-start=\"4542\" data-end=\"4598\"><p data-start=\"4544\" data-end=\"4598\">Environnement sensible (infrastructures, services, littoral).<\/p><\/li><\/ul><p data-start=\"4600\" data-end=\"4958\">Si vous \u00eates int\u00e9ress\u00e9 par un <strong data-start=\"4618\" data-end=\"4647\">plan d'op\u00e9ration initial<\/strong> avec la courbe de pression et le dosage des additifs, notre <strong data-start=\"4715\" data-end=\"4811\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/assistance-technique-et-ingenierie\/\" target=\"_new\" rel=\"noopener\" data-start=\"4717\" data-end=\"4809\">Assistance technique et ing\u00e9nierie<\/a><\/strong> peut le pr\u00e9parer \u00e0 partir de vos relev\u00e9s et de vos trac\u00e9s ; pour commencer l'\u00e9valuation, <strong data-start=\"4892\" data-end=\"4957\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/demande-doffre\/\" target=\"_new\" rel=\"noopener\" data-start=\"4894\" data-end=\"4955\">demander une offre<\/a><\/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\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>En hinca de tuber\u00eda (microt\u00fanel), la presi\u00f3n de c\u00e1mara debe equilibrar la presi\u00f3n de tierras efectiva m\u00e1s la presi\u00f3n de poros a la cota del frente; luego se ajusta en obra con el balance de tierras, los empujes\/torque y la auscultaci\u00f3n. La elecci\u00f3n entre EPB y hidroescudo\/Slurry viene dada por permeabilidad, granulometr\u00eda y nivel fre\u00e1tico; [&hellip;]<\/p>\n","protected":false},"author":80,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[146],"tags":[],"class_list":["post-4720","post","type-post","status-publish","format-standard","hentry","category-preguntas-frecuentes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Presi\u00f3n de c\u00e1mara y EPB\/Slurry en suelos saturados<\/title>\n<meta name=\"description\" content=\"Presi\u00f3n de c\u00e1mara en suelos saturados y mixtos: criterios t\u00e9cnicos, riesgos geot\u00e9cnicos, acondicionamiento y control durante la excavaci\u00f3n.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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