{"id":11343,"date":"2020-03-02T15:03:04","date_gmt":"2020-03-02T23:03:04","guid":{"rendered":"https:\/\/robbinstbm.com\/?p=11343"},"modified":"2021-03-31T11:35:50","modified_gmt":"2021-03-31T18:35:50","slug":"guangxi-breakthrough","status":"publish","type":"post","link":"https:\/\/www.robbinstbm.com\/es\/guangxi-breakthrough\/","title":{"rendered":"Tough TBM breaks through after navigating Faults, Karst, and More"},"content":{"rendered":"<p>In January 2020, a Robbins 5.97 m (19.6 ft) diameter <a href=\"https:\/\/www.robbinstbm.com\/products\/tunnel-boring-machines\/main-beam\/\" target=\"_blank\" rel=\"noopener noreferrer\">Main Beam TBM<\/a> cleared its final hurdle when it broke through in Guangxi Province, China. \u00a0The TBM excavated its first of two tunnels, an 11.9 km (7.4 mi) long conduit for Lot 1 of the North Line Water Irrigation Project, Letan Water Reservoir, Drought-Relief. The tunnel was marked by a gauntlet of challenges, from karst cavities to fault zones and water inflows. The workers on the jobsite, contractor Guangdong No. 2 Hydropower Bureau Co., Ltd., and the owner, Construction Management Bureau for the Letan Water Reservoir, had much to celebrate after completion of what is widely regarded as the most complex and longest tunnel on the North Line project.<\/p>\n\t\t<div class=\"post-gallery\">\n\t\t\t<div class=\"gallery-previous\"><\/div>\n\t\t\t<div class=\"gallery-next\"><\/div>\n\t\t\t<ul>\n\t\t\t\t\t\t\t<li class=\"gallery-image-0\"><div class=\"gallery-image\" style=\"background-image:url(https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-1-scaled.jpg);\"><\/div><\/li>\n\t\t\t\t\t\t\t\t<li class=\"gallery-image-1\"><div class=\"gallery-image\" style=\"background-image:url(https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-3-scaled.jpg);\"><\/div><\/li>\n\t\t\t\t\t\t\t\t<li class=\"gallery-image-2\"><div class=\"gallery-image\" style=\"background-image:url(https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-4-scaled.jpg);\"><\/div><\/li>\n\t\t\t\t\t\t\t<\/ul>\n\t\t<\/div>\n\t\t\n<p>Boring with the Robbins Main Beam TBM and continuous conveyor system began in summer 2015. \u201cThere was no precedent in this province for using a Main Beam TBM to excavate a tunnel longer than 10 km. We didn\u2019t have relevant local experience to use for reference,\u201d explained Yongjiu Jin, Deputy Manager of the Project for contractor Guangdong No. 2 Hydropower Bureau Co., Ltd. The machine did encounter a number of difficult geological obstacles as it bored through limestone rock, but was still able to achieve advance rates up to 40 m (130 ft) per day in good ground.<\/p>\n<p>Much of the geology consisted of lightly weathered limestone in rock class II to III, with some sections in class IV to V rock that required the heaviest amount of ground support, ranging from rock bolts to ring beams and mesh. \u201cOur team encountered a coal seam, gasses in the tunnel, two large water inrushes, three fault zones up to 103 m long, 11 karst cavities, and more. \u00a0In order to solve the ground problems, there were more than 160 special technical research meetings held,\u201d said Yongjiu.<\/p>\n<p>Throughout tunneling, the contractor expressed thanks for Robbins Field Service staff. \u201cRobbins personnel provided good technical support from equipment installation and commissioning through to tunnel completion. After the equipment was handed over to our company, they still helped us with equipment usage on our project, which makes us very satisfied with the Robbins after-sales service. \u00a0Robbins really delivered: the after-sales phase was not the end of service, but the beginning of site service,\u201d said Yongjiu.<\/p>\n<p>While the completion of the first tunnel\u2014the longest single-heading construction on record for water tunnels in Guangxi\u2014is a milestone, there is more to do. The Robbins machine will be inspected and relaunched to bore a second tunnel 4.2 km (2.6 mi) in length. \u00a0The ground conditions are predicted to be equally challenging, but the tunneling operation has some help from ground prediction methodology. Tunnel Reflection Tomography (TRT)\u2014consisting of ground prediction using seismic waves\u2014is being used to detect changing conditions ahead of the TBM.\u00a0 The method can predict the distribution and scale of joints and fissures, allowing the crew to plan ahead.<\/p>\n<p>Located near Laibin City, the North Line project provides much needed drought relief using a network of tunnels totaling 29.4 km (18.3 mi). \u201cThis tunnel will realize the dream of drought control that people in Central Guangxi have had for many years. The breakthrough is the most important milestone event in this first phase of the North Line project,\u201d said Yongjiu.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In January 2020, a Robbins 5.97 m (19.6 ft) diameter Main Beam TBM cleared its final hurdle when it broke through in Guangxi Province, China. The tunnel was marked by a gauntlet of challenges, from karst cavities to fault zones and water inflows.<\/p>\n","protected":false},"author":2,"featured_media":11347,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[10,3],"tags":[],"class_list":["post-11343","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-press-releases"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tough TBM breaks through after navigating Faults, Karst, and More - Robbins<\/title>\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.robbinstbm.com\/guangxi-breakthrough\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tough TBM breaks through after navigating Faults, Karst, and More - Robbins\" \/>\n<meta property=\"og:description\" content=\"In January 2020, a Robbins 5.97 m (19.6 ft) diameter Main Beam TBM cleared its final hurdle when it broke through in Guangxi Province, China. The tunnel was marked by a gauntlet of challenges, from karst cavities to fault zones and water inflows.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/\" \/>\n<meta property=\"og:site_name\" content=\"Robbins\" \/>\n<meta property=\"article:published_time\" content=\"2020-03-02T23:03:04+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-03-31T18:35:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"768\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Robbins\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Robbins_Co\" \/>\n<meta name=\"twitter:site\" content=\"@Robbins_Co\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Robbins\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/\"},\"author\":{\"name\":\"Robbins\",\"@id\":\"https:\/\/www.robbinstbm.com\/#\/schema\/person\/5fb6775f0b2b170edca2e3bdc16be280\"},\"headline\":\"Tough TBM breaks through after navigating Faults, Karst, and More\",\"datePublished\":\"2020-03-02T23:03:04+00:00\",\"dateModified\":\"2021-03-31T18:35:50+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/\"},\"wordCount\":539,\"publisher\":{\"@id\":\"https:\/\/www.robbinstbm.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-2.jpg\",\"articleSection\":[\"News\",\"Press Releases\"],\"inLanguage\":\"es-ES\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/\",\"url\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/\",\"name\":\"Tough TBM breaks through after navigating Faults, Karst, and More - Robbins\",\"isPartOf\":{\"@id\":\"https:\/\/www.robbinstbm.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-2.jpg\",\"datePublished\":\"2020-03-02T23:03:04+00:00\",\"dateModified\":\"2021-03-31T18:35:50+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#breadcrumb\"},\"inLanguage\":\"es-ES\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es-ES\",\"@id\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#primaryimage\",\"url\":\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-2.jpg\",\"contentUrl\":\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-2.jpg\",\"width\":8400,\"height\":6300,\"caption\":\"The 5.97 m (19.6 ft) Robbins TBM traversed fault zones, karst cavities, a coal seam, and more while achieving up to 40 m (130 ft) in one day.\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.robbinstbm.com\/es\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Tough TBM breaks through after navigating Faults, Karst, and More\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.robbinstbm.com\/#website\",\"url\":\"https:\/\/www.robbinstbm.com\/\",\"name\":\"Robbins\",\"description\":\"Reliable | Responsive\",\"publisher\":{\"@id\":\"https:\/\/www.robbinstbm.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.robbinstbm.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es-ES\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.robbinstbm.com\/#organization\",\"name\":\"Robbins\",\"url\":\"https:\/\/www.robbinstbm.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es-ES\",\"@id\":\"https:\/\/www.robbinstbm.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2021\/02\/RobbinsLogoColor_Small-Converted-scaled.jpg\",\"contentUrl\":\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2021\/02\/RobbinsLogoColor_Small-Converted-scaled.jpg\",\"width\":2560,\"height\":929,\"caption\":\"Robbins\"},\"image\":{\"@id\":\"https:\/\/www.robbinstbm.com\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/x.com\/Robbins_Co\",\"https:\/\/www.instagram.com\/therobbinscompany\/\",\"https:\/\/www.linkedin.com\/groups\/4246982\/\",\"http:\/\/www.youtube.com\/user\/TheRobbinsCo\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.robbinstbm.com\/#\/schema\/person\/5fb6775f0b2b170edca2e3bdc16be280\",\"name\":\"Robbins\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es-ES\",\"@id\":\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2017\/04\/avatar_user_2_1493131025-96x96.png\",\"url\":\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2017\/04\/avatar_user_2_1493131025-96x96.png\",\"contentUrl\":\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2017\/04\/avatar_user_2_1493131025-96x96.png\",\"caption\":\"Robbins\"},\"sameAs\":[\"http:\/\/www.linkedin.com\/groups\/Robbins-TBM-4246982?trk=myg_ugrp_ovr\"],\"url\":\"https:\/\/www.robbinstbm.com\/es\/author\/the-robbins-company\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Tough TBM breaks through after navigating Faults, Karst, and More - Robbins","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/","og_locale":"es_ES","og_type":"article","og_title":"Tough TBM breaks through after navigating Faults, Karst, and More - Robbins","og_description":"In January 2020, a Robbins 5.97 m (19.6 ft) diameter Main Beam TBM cleared its final hurdle when it broke through in Guangxi Province, China. The tunnel was marked by a gauntlet of challenges, from karst cavities to fault zones and water inflows.","og_url":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/","og_site_name":"Robbins","article_published_time":"2020-03-02T23:03:04+00:00","article_modified_time":"2021-03-31T18:35:50+00:00","og_image":[{"url":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-2.jpg","width":1024,"height":768,"type":"image\/jpeg"}],"author":"Robbins","twitter_card":"summary_large_image","twitter_creator":"@Robbins_Co","twitter_site":"@Robbins_Co","twitter_misc":{"Written by":"Robbins","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#article","isPartOf":{"@id":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/"},"author":{"name":"Robbins","@id":"https:\/\/www.robbinstbm.com\/#\/schema\/person\/5fb6775f0b2b170edca2e3bdc16be280"},"headline":"Tough TBM breaks through after navigating Faults, Karst, and More","datePublished":"2020-03-02T23:03:04+00:00","dateModified":"2021-03-31T18:35:50+00:00","mainEntityOfPage":{"@id":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/"},"wordCount":539,"publisher":{"@id":"https:\/\/www.robbinstbm.com\/#organization"},"image":{"@id":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#primaryimage"},"thumbnailUrl":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-2.jpg","articleSection":["News","Press Releases"],"inLanguage":"es-ES"},{"@type":"WebPage","@id":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/","url":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/","name":"Tough TBM breaks through after navigating Faults, Karst, and More - Robbins","isPartOf":{"@id":"https:\/\/www.robbinstbm.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#primaryimage"},"image":{"@id":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#primaryimage"},"thumbnailUrl":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-2.jpg","datePublished":"2020-03-02T23:03:04+00:00","dateModified":"2021-03-31T18:35:50+00:00","breadcrumb":{"@id":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#breadcrumb"},"inLanguage":"es-ES","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/"]}]},{"@type":"ImageObject","inLanguage":"es-ES","@id":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#primaryimage","url":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-2.jpg","contentUrl":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2020\/03\/Image-2.jpg","width":8400,"height":6300,"caption":"The 5.97 m (19.6 ft) Robbins TBM traversed fault zones, karst cavities, a coal seam, and more while achieving up to 40 m (130 ft) in one day."},{"@type":"BreadcrumbList","@id":"https:\/\/www.robbinstbm.com\/guangxi-breakthrough\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.robbinstbm.com\/es\/"},{"@type":"ListItem","position":2,"name":"Tough TBM breaks through after navigating Faults, Karst, and More"}]},{"@type":"WebSite","@id":"https:\/\/www.robbinstbm.com\/#website","url":"https:\/\/www.robbinstbm.com\/","name":"Robbins","description":"Reliable | Responsive","publisher":{"@id":"https:\/\/www.robbinstbm.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.robbinstbm.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"es-ES"},{"@type":"Organization","@id":"https:\/\/www.robbinstbm.com\/#organization","name":"Robbins","url":"https:\/\/www.robbinstbm.com\/","logo":{"@type":"ImageObject","inLanguage":"es-ES","@id":"https:\/\/www.robbinstbm.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2021\/02\/RobbinsLogoColor_Small-Converted-scaled.jpg","contentUrl":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2021\/02\/RobbinsLogoColor_Small-Converted-scaled.jpg","width":2560,"height":929,"caption":"Robbins"},"image":{"@id":"https:\/\/www.robbinstbm.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/x.com\/Robbins_Co","https:\/\/www.instagram.com\/therobbinscompany\/","https:\/\/www.linkedin.com\/groups\/4246982\/","http:\/\/www.youtube.com\/user\/TheRobbinsCo"]},{"@type":"Person","@id":"https:\/\/www.robbinstbm.com\/#\/schema\/person\/5fb6775f0b2b170edca2e3bdc16be280","name":"Robbins","image":{"@type":"ImageObject","inLanguage":"es-ES","@id":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2017\/04\/avatar_user_2_1493131025-96x96.png","url":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2017\/04\/avatar_user_2_1493131025-96x96.png","contentUrl":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2017\/04\/avatar_user_2_1493131025-96x96.png","caption":"Robbins"},"sameAs":["http:\/\/www.linkedin.com\/groups\/Robbins-TBM-4246982?trk=myg_ugrp_ovr"],"url":"https:\/\/www.robbinstbm.com\/es\/author\/the-robbins-company\/"}]}},"_links":{"self":[{"href":"https:\/\/www.robbinstbm.com\/es\/wp-json\/wp\/v2\/posts\/11343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.robbinstbm.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.robbinstbm.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.robbinstbm.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.robbinstbm.com\/es\/wp-json\/wp\/v2\/comments?post=11343"}],"version-history":[{"count":0,"href":"https:\/\/www.robbinstbm.com\/es\/wp-json\/wp\/v2\/posts\/11343\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.robbinstbm.com\/es\/wp-json\/wp\/v2\/media\/11347"}],"wp:attachment":[{"href":"https:\/\/www.robbinstbm.com\/es\/wp-json\/wp\/v2\/media?parent=11343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.robbinstbm.com\/es\/wp-json\/wp\/v2\/categories?post=11343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.robbinstbm.com\/es\/wp-json\/wp\/v2\/tags?post=11343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}