{"id":5103,"date":"2026-01-27T08:42:15","date_gmt":"2026-01-27T08:42:15","guid":{"rendered":"https:\/\/eurohinca.com\/?p=5103"},"modified":"2026-01-27T08:49:20","modified_gmt":"2026-01-27T08:49:20","slug":"what-criteria-determine-the-spacing-between-intermediate-shafts-in-long-pile-drives","status":"publish","type":"post","link":"https:\/\/eurohinca.com\/en\/que-criterios-determinan-la-separacion-entre-pozos-intermedios-en-hincas-largas\/","title":{"rendered":"What criteria determine the spacing between intermediate wells in long pile driving?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"5103\" class=\"elementor elementor-5103\" 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=\"87\" data-end=\"764\">The <strong data-start=\"90\" data-end=\"128\">separation between intermediate wells<\/strong> (additional wells to divide a long drive into several drives) is defined, above all, by the <strong data-start=\"225\" data-end=\"278\">balance between the thrust needed to move forward<\/strong> and the <strong data-start=\"284\" data-end=\"311\">maximum allowable thrust<\/strong> of the system (piping + joints + equipment + attack well). In practice, the limiting criterion is usually the increase of <strong data-start=\"435\" data-end=\"460\">pipe-ground friction<\/strong> with the length, and how it is managed with <strong data-start=\"501\" data-end=\"516\">lubrication<\/strong> and geometric control. For the context of the method, see <a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/pipe-jacking-2\/\" target=\"_new\" rel=\"noopener\" data-start=\"572\" data-end=\"636\">Pipe jacking<\/a> y <a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/what-is-a-pipe-jacking\/\" target=\"_new\" rel=\"noopener\" data-start=\"639\" data-end=\"725\">What is a pipe jacking?<\/a>.<\/p><p data-start=\"766\" data-end=\"845\"><strong data-start=\"766\" data-end=\"845\">Main technical criteria (those that \u201ccommand\u201d the distance between wells):<\/strong><\/p><ol data-start=\"847\" data-end=\"3612\"><li data-start=\"847\" data-end=\"1323\"><p data-start=\"850\" data-end=\"1323\"><strong data-start=\"850\" data-end=\"905\">Maximum allowable thrust and borehole reaction wall<\/strong><br data-start=\"905\" data-end=\"908\" \/>The maximum length \u201cwithout an intermediate shaft\u201d is conditioned by the <strong data-start=\"975\" data-end=\"995\">permissible thrust<\/strong> that the system can transmit without damaging <strong data-start=\"1038\" data-end=\"1056\">piping\/joints<\/strong> and without compromising the <strong data-start=\"1078\" data-end=\"1098\">reaction wall<\/strong> of the well. This connects directly to the design of <a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/how-to-dimension-attack-and-reception-wells\/\" target=\"_new\" rel=\"noopener\" data-start=\"1152\" data-end=\"1284\">Attack and reception wells: pushing, hoisting and logistics<\/a>.<\/p><\/li><li data-start=\"1325\" data-end=\"2005\"><p data-start=\"1328\" data-end=\"2005\"><strong data-start=\"1328\" data-end=\"1411\">Expected friction (geotechnical + diameter + length) and lubrication strategy<\/strong><br data-start=\"1411\" data-end=\"1414\" \/>The greater the length, the greater the accumulated friction, especially in abrasive\/heterogeneous terrain or with demanding geometry. The <strong data-start=\"1536\" data-end=\"1574\">repeated lubrication capability<\/strong> and their operational continuity directly impact whether you need to <strong data-start=\"1640\" data-end=\"1661\">intermediate wells<\/strong> or if you can solve with auxiliary solutions. For typical risks and mitigation (including lubrication and auxiliary stations) see <a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/what-geotechnical-risks-are-most-common-in-microtunneling-and-how-to-mitigate-them-on-site\/\" target=\"_new\" rel=\"noopener\" data-start=\"1795\" data-end=\"1966\">Geotechnical risks in microtunnelling and their mitigation.<\/a>.<\/p><\/li><li data-start=\"2007\" data-end=\"2544\"><p data-start=\"2010\" data-end=\"2544\"><strong data-start=\"2010\" data-end=\"2070\">Water table, water pressure and front stability<\/strong><br data-start=\"2070\" data-end=\"2073\" \/>If the section works with <strong data-start=\"2097\" data-end=\"2127\">high water pressures<\/strong> or sensitive terrain, the requirement for face control, debris\/sludge management and sometimes the complexity of the wells (pumps, treatment, HSE) increases. This can lead to <strong data-start=\"2314\" data-end=\"2346\">reduce lengths per drive<\/strong> (Method\/equipment criteria according to conditions in <a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/choice-of-tunnel-boring-machine\/\" target=\"_new\" rel=\"noopener\" data-start=\"2430\" data-end=\"2504\">Choice of tunnel boring machine<\/a>).<\/p><\/li><li data-start=\"2546\" data-end=\"2930\"><p data-start=\"2549\" data-end=\"2930\"><strong data-start=\"2549\" data-end=\"2635\">Geometric layout and control (line\/curve), tolerances and sensitivity to the environment<\/strong><br data-start=\"2635\" data-end=\"2638\" \/>Curves, variable coverage or urban environments (sensitive services) often penalize the practical length by increasing lateral stresses, corrections and risk of accumulated deviation; in these cases it is more common to <strong data-start=\"2859\" data-end=\"2872\">segment<\/strong> with wells or to set up auxiliary systems and greater control.<\/p><\/li><li data-start=\"2932\" data-end=\"3612\"><p data-start=\"2935\" data-end=\"3612\"><strong data-start=\"2935\" data-end=\"3008\">Logistics and available space (implementation, permits, access, HSE)<\/strong><br data-start=\"3008\" data-end=\"3011\" \/>Although the drive could technically be lengthened, it may not be feasible due to <strong data-start=\"3084\" data-end=\"3095\">space<\/strong> for a well, crane access, stockpiles, sludge\/debris management and safety. Key here are the requirements for <a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/civil-work\/\" target=\"_new\" rel=\"noopener\" data-start=\"3208\" data-end=\"3258\">Civil works<\/a> and the service of <a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/vertical-wells\/\" target=\"_new\" rel=\"noopener\" data-start=\"3276\" data-end=\"3338\">Vertical wells<\/a>, in addition to the specific requirements explained in <a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/what-are-the-civil-works-and-manholes-requirements-for-a-pipeline-jacking-project\/\" target=\"_new\" rel=\"noopener\" data-start=\"3391\" data-end=\"3573\">Civil works and manholes requirements<\/a>.<\/p><\/li><\/ol><p data-start=\"3614\" data-end=\"4125\"><strong data-start=\"3614\" data-end=\"3643\">Important practical note:<\/strong> in long pits, before \u201cputting in\u201d intermediate wells, it is usually evaluated whether the layout can be resolved with <strong data-start=\"3749\" data-end=\"3772\">auxiliary systems<\/strong> (e.g., planning of intermediate stations\/push and go solutions) when justified by the project, as contemplated by <a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/technical-assistance-and-engineering\/\" target=\"_new\" rel=\"noopener\" data-start=\"3914\" data-end=\"4006\">Technical assistance and engineering<\/a> and in <a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/en\/choice-of-tunnel-boring-machine\/\" target=\"_new\" rel=\"noopener\" data-start=\"4012\" data-end=\"4086\">Choice of tunnel boring machine<\/a>.<\/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>La separaci\u00f3n entre pozos intermedios (pozos adicionales para dividir una hinca larga en varios drives) se define, sobre todo, por el equilibrio entre el empuje necesario para avanzar y el empuje m\u00e1ximo admisible del sistema (tuber\u00eda + juntas + equipo + pozo de ataque). En la pr\u00e1ctica, el criterio limitante suele ser el incremento de [&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-5103","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>Pozos intermedios en hinca: separaci\u00f3n | Eurohinca<\/title>\n<meta name=\"description\" content=\"Criterios para definir la distancia entre pozos intermedios: empuje admisible, fricci\u00f3n, lubricaci\u00f3n, geotecnia, curvatura y log\u00edstica.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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