{"id":4720,"date":"2025-11-04T10:06:53","date_gmt":"2025-11-04T10:06:53","guid":{"rendered":"https:\/\/eurohinca.com\/?p=4720"},"modified":"2025-11-04T10:09:47","modified_gmt":"2025-11-04T10:09:47","slug":"que-presion-de-camara-y-acondicionamiento-usar-en-suelos-saturados-y-mixtos","status":"publish","type":"post","link":"https:\/\/eurohinca.com\/en\/que-presion-de-camara-y-acondicionamiento-usar-en-suelos-saturados-y-mixtos\/","title":{"rendered":"\u00bfQu\u00e9 presi\u00f3n de c\u00e1mara y acondicionamiento (EPB\/hidroescudo) usar en suelos saturados y mixtos?"},"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\">At <strong data-start=\"120\" data-end=\"201\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/pipe-jacking-2\/\" target=\"_new\" rel=\"noopener\" data-start=\"122\" data-end=\"199\">hinca de tuber\u00eda (microt\u00fanel)<\/a><\/strong>the <strong data-start=\"206\" data-end=\"227\">presi\u00f3n de c\u00e1mara<\/strong> debe equilibrar la <strong data-start=\"247\" data-end=\"278\">presi\u00f3n de tierras efectiva<\/strong> m\u00e1s la <strong data-start=\"286\" data-end=\"306\">presi\u00f3n de poros<\/strong> a la cota del frente; luego se ajusta en obra con el <strong data-start=\"360\" data-end=\"382\">balance de tierras<\/strong>, los <strong data-start=\"388\" data-end=\"406\">empujes\/torque<\/strong> and the <strong data-start=\"412\" data-end=\"428\">auscultaci\u00f3n<\/strong>. La elecci\u00f3n entre <strong data-start=\"448\" data-end=\"455\">EPB<\/strong> y <strong data-start=\"458\" data-end=\"480\">hidroescudo\/Slurry<\/strong> viene dada por <strong data-start=\"496\" data-end=\"513\">permeabilidad<\/strong>, <strong data-start=\"515\" data-end=\"532\">granulometr\u00eda<\/strong> y <strong data-start=\"535\" data-end=\"553\">nivel fre\u00e1tico<\/strong>; el acondicionamiento (espumas, bentonita, pol\u00edmeros) se calibra para asegurar <strong data-start=\"633\" data-end=\"652\">soporte estable<\/strong>, <strong data-start=\"654\" data-end=\"675\">transportabilidad<\/strong> y <strong data-start=\"678\" data-end=\"706\">control de asentamientos<\/strong>.<\/p><h2 data-start=\"714\" data-end=\"764\">1) Punto de partida para la presi\u00f3n de c\u00e1mara<\/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\">Modelo inicial:<\/strong> <span class=\"katex\"><span class=\"katex-mathml\">pca\u02camara\u2248\u03c3v,frente\u2032+uwp_\\text{c\u00e1mara} \\approx \\sigma&#8217;_{v,\\text{frente}} + 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\">frente<\/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>, con correcciones por <strong data-start=\"869\" data-end=\"882\">cobertura<\/strong>, <strong data-start=\"884\" data-end=\"899\">sobrecargas<\/strong> y <strong data-start=\"902\" data-end=\"913\">overcut<\/strong>; en explotaci\u00f3n se trabaja alrededor de ese valor con m\u00e1rgenes finos (p.ej. <strong data-start=\"990\" data-end=\"1008\">\u00b10,05\u20130,20 bar<\/strong>), en funci\u00f3n de la respuesta del terreno y la sensibilidad del entorno. Para contrastar criterios de c\u00e1lculo y l\u00edmites operativos puedes apoyarte en las <strong data-start=\"1162\" data-end=\"1186\">Recomendaciones DAUB<\/strong> de presi\u00f3n de frente en suelos blandos y en la <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\">BTS\/ICE Specification for Tunnelling (3rd ed.)<\/strong><\/a>, que recogen buenas pr\u00e1cticas de operaci\u00f3n y control.<\/p><\/li><li data-start=\"1379\" data-end=\"1508\"><p data-start=\"1381\" data-end=\"1508\"><strong data-start=\"1381\" data-end=\"1405\">Validaci\u00f3n en campo:<\/strong> buscar <strong data-start=\"1413\" data-end=\"1428\">balance \u2248 1<\/strong>, presiones estables y concordancia con <strong data-start=\"1468\" data-end=\"1507\">piez\u00f3metros\/asent\u00edmetros\/topograf\u00eda<\/strong>.<\/p><\/li><\/ul><h2 data-start=\"1515\" data-end=\"1560\">2) \u00bfEPB o hidroescudo? (decisi\u00f3n r\u00e1pida)<\/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 limos\/arcillas y <strong data-start=\"1590\" data-end=\"1613\">arenas finas\u2013medias<\/strong> (permeabilidad baja\u2013media). Estabiliza el frente con el <strong data-start=\"1670\" data-end=\"1703\">propio detritus acondicionado<\/strong>.<\/p><\/li><li data-start=\"1707\" data-end=\"2064\"><p data-start=\"1709\" data-end=\"2064\"><strong data-start=\"1709\" data-end=\"1731\">Hidroescudo\/Slurry<\/strong> \u2192 <strong data-start=\"1734\" data-end=\"1761\">arenas limpias y gravas<\/strong> (k alta) y <strong data-start=\"1773\" data-end=\"1787\">NF elevado<\/strong>; mantiene el soporte con <strong data-start=\"1813\" data-end=\"1839\">suspensi\u00f3n presurizada<\/strong> y formaci\u00f3n de <strong data-start=\"1855\" data-end=\"1870\">filter cake<\/strong>. Una gu\u00eda p\u00fablica clara sobre control del terreno en EPB es el documento del <a href=\"https:\/\/www.cedd.gov.hk\/filemanager\/eng\/content_526\/er298links.pdf?utm_source=chatgpt.com\"><strong data-start=\"1948\" data-end=\"1980\">Gobierno de Hong Kong (CEDD)<\/strong><\/a>, \u00fatil para auditor\u00edas de c\u00e1lculo y operaci\u00f3n.<\/p><\/li><\/ul><h2 data-start=\"2071\" data-end=\"2129\">3) Acondicionamiento y se\u00f1ales de buen funcionamiento<\/h2><p data-start=\"2131\" data-end=\"2170\"><strong data-start=\"2131\" data-end=\"2168\">EPB (frente pl\u00e1stico y bombeable)<\/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\">Aditivos:<\/strong> espumas (FIR\/FER) + pol\u00edmeros\/bentonita para bajar par, <strong data-start=\"2243\" data-end=\"2253\">sellar<\/strong> y dar <strong data-start=\"2260\" data-end=\"2274\">tixotrop\u00eda<\/strong>.<\/p><\/li><li data-start=\"2278\" data-end=\"2384\"><p data-start=\"2280\" data-end=\"2384\"><strong data-start=\"2280\" data-end=\"2299\">Indicadores OK:<\/strong> presi\u00f3n estable, <strong data-start=\"2317\" data-end=\"2345\">empujes\/torque sin picos<\/strong>, retorno homog\u00e9neo, <strong data-start=\"2366\" data-end=\"2381\">balance \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\">Ajustes t\u00edpicos:<\/strong> material seco\/bolos \u2192 subir <strong data-start=\"2436\" data-end=\"2452\">dosificaci\u00f3n<\/strong>; p\u00e9rdidas de presi\u00f3n \u2192 mejorar <strong data-start=\"2484\" data-end=\"2495\">sellado<\/strong> y <strong data-start=\"2498\" data-end=\"2509\">engrase<\/strong> perimetral.<\/p><\/li><\/ul><p data-start=\"2523\" data-end=\"2587\"><strong data-start=\"2523\" data-end=\"2585\">Hidroescudo\/Slurry (cake estable y transmisi\u00f3n de presi\u00f3n)<\/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\">Suspensi\u00f3n:<\/strong> bentonita (\u00b1 pol\u00edmeros) con <strong data-start=\"2634\" data-end=\"2646\">densidad<\/strong> y <strong data-start=\"2649\" data-end=\"2663\">viscosidad<\/strong> objetivo; control de <strong data-start=\"2685\" data-end=\"2694\">nivel<\/strong> y <strong data-start=\"2697\" data-end=\"2723\">p\u00e9rdida por filtraci\u00f3n<\/strong>.<\/p><\/li><li data-start=\"2727\" data-end=\"2863\"><p data-start=\"2729\" data-end=\"2863\"><strong data-start=\"2729\" data-end=\"2748\">Indicadores OK:<\/strong> transmisi\u00f3n de presi\u00f3n estable, <strong data-start=\"2781\" data-end=\"2815\">caudales ida\/vuelta coherentes<\/strong>, baja filtraci\u00f3n y asentamientos controlados.<\/p><\/li><li data-start=\"2864\" data-end=\"3019\"><p data-start=\"2866\" data-end=\"3019\"><strong data-start=\"2866\" data-end=\"2886\">Ajustes t\u00edpicos:<\/strong> p\u00e9rdidas \u2192 <strong data-start=\"2898\" data-end=\"2924\">subir presi\u00f3n\/densidad<\/strong> y optimizar <strong data-start=\"2937\" data-end=\"2945\">cake<\/strong>; retorno inestable \u2192 revisar <strong data-start=\"2975\" data-end=\"2987\">circuito<\/strong>, <strong data-start=\"2989\" data-end=\"3003\">desarenado<\/strong> y <strong data-start=\"3006\" data-end=\"3018\">reolog\u00eda<\/strong>.<\/p><\/li><\/ul><h2 data-start=\"3026\" data-end=\"3077\">4) Tabla r\u00e1pida para suelos saturados y mixtos<\/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\">Condici\u00f3n dominante<\/th><th data-start=\"3101\" data-end=\"3121\" data-col-size=\"sm\">M\u00e9todo preferente<\/th><th data-start=\"3121\" data-end=\"3151\" data-col-size=\"md\">Claves de presi\u00f3n de c\u00e1mara<\/th><th data-start=\"3151\" data-end=\"3182\" data-col-size=\"md\">Acondicionamiento 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\">Arenas finas saturadas (k baja\u2013media)<\/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&#8217; + 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>; estabilidad por compactaci\u00f3n<\/td><td data-start=\"3315\" data-end=\"3360\" data-col-size=\"md\">Espumas + pol\u00edmeros (sellado\/plasticidad)<\/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\">Arenas limpias \/ gravas (k alta)<\/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&#8217; + 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> para evitar inflow<\/td><td data-start=\"3467\" data-end=\"3530\" data-col-size=\"md\">Bentonita + control de densidad\/viscosidad; <strong data-start=\"3513\" data-end=\"3528\">filter cake<\/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\">Suelos mixtos (estratos alternos)<\/strong><\/td><td data-start=\"3571\" data-end=\"3600\" data-col-size=\"sm\"><strong data-start=\"3573\" data-end=\"3586\">EPB mixto<\/strong> o <strong data-start=\"3589\" data-end=\"3599\">Slurry<\/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 por estrato; vigilar transiciones<\/td><td data-start=\"3651\" data-end=\"3699\" data-col-size=\"md\">Ajuste din\u00e1mico de espuma\/lodo; modos mixtos<\/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 muy alto \/ entorno 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\">Control fino de <strong data-start=\"3773\" data-end=\"3800\">nivel\/tanque de presi\u00f3n<\/strong><\/td><td data-start=\"3801\" data-end=\"3854\" data-col-size=\"md\">Densidad y p\u00e9rdida por filtraci\u00f3n muy controladas<\/td><\/tr><\/tbody><\/table><\/div><\/div><p data-start=\"3856\" data-end=\"3886\"><em data-start=\"3856\" data-end=\"3886\">(k: permeabilidad del suelo)<\/em><\/p><h2 data-start=\"3893\" data-end=\"3947\">5) Buenas pr\u00e1cticas para no inducir asentamientos<\/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\">Set-point y umbrales<\/strong> (\u00b1\u0394p) definidos antes de arrancar; rampas suaves al variar presi\u00f3n.<\/p><\/li><li data-start=\"4046\" data-end=\"4114\"><p data-start=\"4049\" data-end=\"4114\"><strong data-start=\"4049\" data-end=\"4082\">Auscultar y cerrar el balance<\/strong> (volumen excavado \u2194 retorno).<\/p><\/li><li data-start=\"4115\" data-end=\"4191\"><p data-start=\"4118\" data-end=\"4191\"><strong data-start=\"4118\" data-end=\"4140\">Gestionar reolog\u00eda<\/strong> (espumas\/lodos) y <strong data-start=\"4159\" data-end=\"4170\">engrase<\/strong> acorde al estrato.<\/p><\/li><li data-start=\"4192\" data-end=\"4335\"><p data-start=\"4195\" data-end=\"4335\"><strong data-start=\"4195\" data-end=\"4212\">Contingencias<\/strong>: p\u00e9rdida de presi\u00f3n \u2192 parar, sellar, inyectar, reanudar; sobrepresi\u00f3n \u2192 alivio controlado y verificaci\u00f3n de deformaciones.<\/p><\/li><\/ol><h2 data-start=\"4342\" data-end=\"4388\">6) Qu\u00e9 enviar para que afinemos tu set-up<\/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\">Estratigraf\u00eda<\/strong> with <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>, coberturas y sobrecargas.<\/p><\/li><li data-start=\"4472\" data-end=\"4541\"><p data-start=\"4474\" data-end=\"4541\">Restricciones ambientales (ventana, l\u00edmites de turbidez\/vertido).<\/p><\/li><li data-start=\"4542\" data-end=\"4598\"><p data-start=\"4544\" data-end=\"4598\">Entorno sensible (infraestructuras, servicios, costa).<\/p><\/li><\/ul><p data-start=\"4600\" data-end=\"4958\">Si te interesa un <strong data-start=\"4618\" data-end=\"4647\">plan de operaci\u00f3n inicial<\/strong> con curva de presi\u00f3n y dosificaci\u00f3n de aditivos, nuestro equipo de <strong data-start=\"4715\" data-end=\"4811\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/technical-assistance-and-engineering\/\" target=\"_new\" rel=\"noopener\" data-start=\"4717\" data-end=\"4809\">Technical assistance and engineering<\/a><\/strong> puede prepararlo a partir de tus sondeos y trazado; para iniciar la valoraci\u00f3n, <strong data-start=\"4892\" data-end=\"4957\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/request-offer\/\" target=\"_new\" rel=\"noopener\" data-start=\"4894\" data-end=\"4955\">solicita oferta<\/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 v27.3 - 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=\"C\u00f3mo fijar la presi\u00f3n de c\u00e1mara y el acondicionamiento EPB o Slurry en suelos saturados y mixtos: regla p\u2248\u03c3\u2019+uw, ajustes en obra, y se\u00f1ales de operaci\u00f3n estable.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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