{"id":5382,"date":"2018-03-09T20:55:14","date_gmt":"2018-03-09T19:55:14","guid":{"rendered":"http:\/\/mdemierre.speleologie.ch\/?p=5382"},"modified":"2026-05-14T15:29:31","modified_gmt":"2026-05-14T14:29:31","slug":"drones-volants-en-speleologie","status":"publish","type":"post","link":"https:\/\/www.techt.ch\/mdemierre\/?p=5382","title":{"rendered":"Drones volants en sp\u00e9l\u00e9ologie"},"content":{"rendered":"<p>Les drones volants ont potentiellement de l&rsquo;int\u00e9r\u00eat pour la sp\u00e9l\u00e9ologie, que ce soit en souterrain ou pour la prospection en falaise.<\/p>\n<p>En milieu souterrain, l&rsquo;application typique est la recherche de d\u00e9parts dans des chemin\u00e9es et des salles. Cela permet aussi l&rsquo;inspection des plafonds pour \u00e9valuer la stabilit\u00e9 (anciennes mines et carri\u00e8res souterraines). Le drone volant permet bien \u00e9videmment aussi de r\u00e9aliser des vid\u00e9os.<\/p>\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Sp\u00e9l\u00e9ologie - drone volant\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/6F2XQlRwbE0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>Le drone doit bien \u00e9videmment disposer d&rsquo;un \u00e9clairage performant. Une solution \u00e9l\u00e9gante consiste \u00e0 utiliser pour un \u00e9clairage diffus un <span style=\"text-decoration: underline;\"><span style=\"color: #0000ff; text-decoration: underline;\"><a style=\"color: #0000ff; text-decoration: underline;\" href=\"https:\/\/www.lumecube.com\/\" target=\"_blank\">Lume Cube<\/a><\/span><\/span>, avec jusqu&rsquo;\u00e0 1500 lumens pour seulement 100 grammes. En souterrain, il n&rsquo;y a \u00e9videmment pas de signaux GPS. De plus, les moyens optiques de positionnement ne fonctionnent pas de mani\u00e8re appropri\u00e9es et doivent, dans certaines circonstances comme des passages \u00e9troits, \u00eatre d\u00e9sactiv\u00e9s. Le vol est donc beaucoup plus d\u00e9licat qu&rsquo;en surface, \u00e0 cause de la perte de stabilit\u00e9 du drone et de l&rsquo;absence de certaines protections anticollisions.<\/p>\n<p>Les entr\u00e9es en falaises sont souvent difficile d&rsquo;acc\u00e8s et demandent beaucoup d&rsquo;efforts pour les atteindre. Souvent, une fois \u00e0 l&rsquo;entr\u00e9e, ce n&rsquo;est qu&rsquo;un jeu d&rsquo;ombre ayant fait r\u00eaver \u00e0 une belle entr\u00e9e de grotte. Le drone volant permet de lever facilement le doute en seulement quelques minutes. Il permet aussi de d\u00e9couvrir de nouvelles entr\u00e9es invisibles depuis le sol. Ci-dessous un test au porche de la grotte du Vertige dans les gorges de la Covatannaz.<\/p>\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Sp\u00e9l\u00e9ologie - prospection en falaise par drone\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/-vKxalB_k4w?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>Les drones sont aussi redoutablement efficaces en prospection, par exemple pour chercher des trous souffleurs.<\/p>\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Sp\u00e9l\u00e9ologie - prospection hivernale avec un drone\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/2pEqYifp4Xg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>Les drones permettent aussi d&rsquo;effectuer des photographies a\u00e9riennes des zones karstiques pour r\u00e9aliser une orthomosa\u00efques, un panorama ou de la photogramm\u00e9trie pour des mod\u00e8les 3D. Le drone r\u00e9alise des s\u00e9ries de photographies selon des trajectoires bien d\u00e9finies. Des logiciels permettent ensuite de faire le traitement des photographies (<span style=\"text-decoration: underline;\"><span style=\"color: #0000ff; text-decoration: underline;\"><a style=\"color: #0000ff; text-decoration: underline;\" href=\"https:\/\/pix4d.com\/\" target=\"_blank\">Pix4D<\/a><\/span><\/span>, <span style=\"text-decoration: underline;\"><span style=\"color: #0000ff; text-decoration: underline;\"><a style=\"color: #0000ff; text-decoration: underline;\" href=\"https:\/\/www.dronedeploy.com\/\" target=\"_blank\">Drone Deploy<\/a><\/span><\/span>, <span style=\"text-decoration: underline;\"><span style=\"color: #0000ff; text-decoration: underline;\"><a style=\"color: #0000ff; text-decoration: underline;\" href=\"http:\/\/www.agisoft.com\/\" target=\"_blank\">Agisoft Photoscan<\/a><\/span><\/span>, <span style=\"text-decoration: underline;\"><span style=\"color: #0000ff; text-decoration: underline;\"><a style=\"color: #0000ff; text-decoration: underline;\" href=\"http:\/\/www.kolor.com\/autopano\/\" target=\"_blank\">Autopano Giga<\/a><\/span><\/span>, &#8230;)<\/p>\n<p>Le drone test\u00e9 ici est le <span style=\"text-decoration: underline;\"><span style=\"color: #0000ff; text-decoration: underline;\"><a style=\"color: #0000ff; text-decoration: underline;\" href=\"https:\/\/www.dji.com\/phantom-4-pro\" target=\"_blank\">DJI Phantom 4 Pro Obsidian<\/a><\/span><\/span> avec protections d&rsquo;h\u00e9lices. D&rsquo;autres fabriquants proposent des drones performants, comme en particulier <span style=\"text-decoration: underline;\"><span style=\"color: #0000ff; text-decoration: underline;\"><a style=\"color: #0000ff; text-decoration: underline;\" href=\"https:\/\/www.sensefly.com\/\" target=\"_blank\">Sensefly (Parrot)<\/a><\/span><\/span>. Pour le milieu confin\u00e9, il existe un drone bien particulier pouvant se d\u00e9placer sans craindre les collisions : <span style=\"text-decoration: underline;\"><span style=\"color: #0000ff; text-decoration: underline;\"><a style=\"color: #0000ff; text-decoration: underline;\" href=\"https:\/\/www.flyability.com\/\" target=\"_blank\">Elios de Flyability<\/a><\/span><\/span>.<\/p>\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Drone flies in an underground abyss\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/yLs3BJE6_Ls?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>Le drone volant a certainement beaucoup de potentialit\u00e9 en sp\u00e9l\u00e9ologie, que ce soit en souterrain ou en surface. A suivre&#8230;<\/p>\n<p>9\/3\/2018, MAJ 2\/4\/2018<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les drones volants ont potentiellement de l&rsquo;int\u00e9r\u00eat pour la sp\u00e9l\u00e9ologie, que ce soit en souterrain ou pour la prospection en [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5383,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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