{"id":6225,"date":"2021-04-29T16:50:49","date_gmt":"2021-04-29T14:50:49","guid":{"rendered":"https:\/\/mika-drilling.com\/drilling-methods-in-tunnel-construction\/"},"modified":"2021-04-29T19:17:51","modified_gmt":"2021-04-29T17:17:51","slug":"drilling-methods-in-tunnel-construction","status":"publish","type":"post","link":"https:\/\/mika-drilling.com\/en\/drilling-methods-in-tunnel-construction\/","title":{"rendered":"DRILLING METHODS IN TUNNEL CONSTRUCTION"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"6225\" class=\"elementor elementor-6225 elementor-6210\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-02e6ec6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"02e6ec6\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;82398f9&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;],&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-4f84459\" data-id=\"4f84459\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b875f84 elementor-widget elementor-widget-heading\" data-id=\"b875f84\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Tunnelling: How is a drill head assembled?<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9507c83 elementor-widget elementor-widget-image\" data-id=\"9507c83\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-1024x576.jpg\" class=\"attachment-large size-large wp-image-5277\" alt=\"Production of tunnel boring head\" srcset=\"https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-1024x576.jpg 1024w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-300x169.jpg 300w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-768x432.jpg 768w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-360x203.jpg 360w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-870x489.jpg 870w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-1170x658.jpg 1170w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-560x315.jpg 560w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-270x153.jpg 270w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-480x271.jpg 480w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1-570x321.jpg 570w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bohrkopf2-1.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-23d3288 elementor-widget elementor-widget-text-editor\" data-id=\"23d3288\" data-element_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<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Depending on the geological conditions, various methods can be used today to build a tunnel. One widespread method is the drilling of the tunnel tube using a tunnel boring machine. <\/p>\n<h2>What is a tunnel drilling machine?<\/h2>\n<p>A tunnel boring machine (TBM) is a machine used to drive tunnels. TBMs can drill through a wide range of ground conditions, from hard rock to sand. In order to build a tunnel as quickly and efficiently as possible, a tunnel boring machine can line the tunnel with curved concrete segments while it is still drilling &#8211; i.e. while the advance is still in progress. Drilling and lining are thus done in one step, so to speak.<\/p>\n<p>Every modern tunnel boring machine is equipped with a high-precision navigation system, which ensures that the machine digs exactly along the tunnel alignment, so there is no getting lost in the alignment.<\/p>\n<p>Tunnel boring machines are manned 24 hours a day, 7 days a week, and are monitored accordingly. They are fully equipped with office, kitchen and toilets.<\/p>\n<h2>What components does a tunnel boring machine consist of?<\/h2>\n<p>The tunnel boring machine can be up to 200 m long and weigh up to 4,000 tonnes. It usually consists of the following components:<\/p>\n<ul>\n<li>Mining \/ cutting blade with chisels (usually in roller form), feed and clamping systems<\/li>\n<li>Systems for the integration of support and extension measures<\/li>\n<li>Systems for material removal (Schutter systems)<\/li>\n<li>Supply unit for energy and compressed air. These are needed to operate the cutting tools.<\/li>\n<li>Water connection and pump system for cooling the cutting tools<\/li>\n<li>Transport facilities &#8211; e.g. for excavated material as well as for support and support materials<\/li>\n<\/ul>\n<h2>The drill head: The heart of the tunnel boring machine<\/h2>\n<p>By far the most important part of a tunnel boring machine is the boring head. This has a diameter of up to 20 metres and usually consists of a tool carrier fitted with rotating roller tools. These transport the excavated rock to the back. In the rear part of the drill head there are various supply and auxiliary devices, which can have a length of up to 200 metres for large drilling diameters.<\/p>\n<p>Tunnel boring machines are always designed as full-face machines. In contrast to roadheaders, they thus intervene in the entire tunnel cross-section in every work step and remove the corresponding material. For this purpose, the drill head must be designed accordingly.<\/p>\n<p>The drilling head transports the excavated material to the rear. For this purpose, conveyor belts are usually coupled to the machine in order to quickly transport away the overburden produced during mining. In addition, a construction train can be connected to the rear part of the drill head in order to transport prefabricated concrete parts for the tunnel to be built afterwards and to install them in one work step after the material has been removed.<\/p>\n<p>If the tunnel is not to be lined with precast concrete elements, it is possible to bring in special spiked concrete via conveyor belts or concrete mixer trucks and then process it directly on site on the tunnel walls.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-ac94b4c\" data-id=\"ac94b4c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-370197a elementor-widget elementor-widget-wp-widget-recent-posts\" data-id=\"370197a\" data-element_type=\"widget\" data-widget_type=\"wp-widget-recent-posts.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n\t\t\n\t\t<h5>Recent Posts<\/h5>\n\t\t<ul>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/mika-drilling.com\/en\/field-takes-over-mika\/\">FIELD TAKES OVER MIKA<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/mika-drilling.com\/en\/drilling-techniques-in-mining-what-is-possible\/\">DRILLING TECHNIQUES IN MINING &#8211; WHAT IS POSSIBLE?<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/mika-drilling.com\/en\/tunneling-what-are-the-drilling-methods\/\">TUNNELING: WHAT ARE THE DRILLING METHODS?<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/mika-drilling.com\/en\/surface-hardening-in-metal-construction\/\">SURFACE HARDENING IN METAL CONSTRUCTION<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/mika-drilling.com\/en\/microtunnelling-definition-and-applications\/\">MICROTUNNELLING: DEFINITION AND USE<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t<\/ul>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3d7e6961 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3d7e6961\" data-element_type=\"section\" 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class=\"elementor-post__thumbnail__link\" href=\"https:\/\/mika-drilling.com\/en\/field-takes-over-mika\/\" >\n\t\t\t<div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-300x225.png\" class=\"attachment-medium size-medium wp-image-6578\" alt=\"\" srcset=\"https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-300x225.png 300w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-768x575.png 768w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-560x419.png 560w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-100x76.png 100w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-270x203.png 270w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-370x278.png 370w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-420x316.png 420w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-480x361.png 480w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-570x428.png 570w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43-770x578.png 770w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2021\/05\/Mika43.png 982w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/mika-drilling.com\/en\/field-takes-over-mika\/\" >\n\t\t\t\tFIELD TAKES OVER MIKA\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/mika-drilling.com\/en\/field-takes-over-mika\/\" aria-label=\"Read more about FIELD TAKES OVER MIKA\" >\n\t\t\tMehr \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-6299 post type-post status-publish format-standard has-post-thumbnail hentry category-news-en tag-drilling-method tag-tunnel-construction has-thumb\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/mika-drilling.com\/en\/drilling-techniques-in-mining-what-is-possible\/\" >\n\t\t\t<div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"190\" src=\"https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bergbau1-300x190.jpg\" class=\"attachment-medium size-medium wp-image-5089\" alt=\"Mining borehole image\" srcset=\"https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bergbau1-300x190.jpg 300w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bergbau1-1024x650.jpg 1024w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bergbau1-768x488.jpg 768w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bergbau1-1536x975.jpg 1536w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bergbau1-560x356.jpg 560w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/bergbau1.jpg 1920w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/mika-drilling.com\/en\/drilling-techniques-in-mining-what-is-possible\/\" >\n\t\t\t\tDRILLING TECHNIQUES IN MINING &#8211; WHAT IS POSSIBLE?\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/mika-drilling.com\/en\/drilling-techniques-in-mining-what-is-possible\/\" aria-label=\"Read more about DRILLING TECHNIQUES IN MINING &#8211; WHAT IS POSSIBLE?\" >\n\t\t\tMehr \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-6279 post type-post status-publish format-standard has-post-thumbnail hentry category-news-en tag-drilling-method tag-tunnel-construction has-thumb\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/mika-drilling.com\/en\/tunneling-what-are-the-drilling-methods\/\" >\n\t\t\t<div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/tunnelbohrkopf-1-300x200.png\" class=\"attachment-medium size-medium wp-image-5361\" alt=\"Production of tunnel boring head\" srcset=\"https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/tunnelbohrkopf-1-300x200.png 300w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/tunnelbohrkopf-1-1024x682.png 1024w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/tunnelbohrkopf-1-768x512.png 768w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/tunnelbohrkopf-1-560x373.png 560w, https:\/\/mika-drilling.com\/wp-content\/uploads\/2020\/01\/tunnelbohrkopf-1.png 1280w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/mika-drilling.com\/en\/tunneling-what-are-the-drilling-methods\/\" >\n\t\t\t\tTUNNELING: WHAT ARE THE DRILLING METHODS?\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/mika-drilling.com\/en\/tunneling-what-are-the-drilling-methods\/\" aria-label=\"Read more about TUNNELING: WHAT ARE THE DRILLING METHODS?\" >\n\t\t\tMehr \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\n\t\t\t\t<div class=\"e-load-more-anchor\" data-page=\"1\" data-max-page=\"3\" data-next-page=\"https:\/\/mika-drilling.com\/en\/wp-json\/wp\/v2\/posts\/6225\/page\/2\/\"><\/div>\n\t\t\t\t<nav class=\"elementor-pagination\" aria-label=\"Pagination\">\n\t\t\t<span class=\"page-numbers prev\">\u00ab Vorherige<\/span>\n<a class=\"page-numbers next\" 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