{"id":7612,"date":"2015-07-06T13:00:02","date_gmt":"2015-07-06T11:00:02","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=7612"},"modified":"2026-06-07T19:35:15","modified_gmt":"2026-06-07T19:35:15","slug":"lac-du-chambon-la-montagne-glisse-mais-ne-seffondre-pas","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/lac-du-chambon-la-montagne-glisse-mais-ne-seffondre-pas\/","title":{"rendered":"Lac du Chambon : la montagne glisse mais ne s&rsquo;effondre pas"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:0px 0 0px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p style=\"text-align: justify;\">Le pr\u00e9fet de l&rsquo;Is\u00e8re, Jean-Paul Bonnetain, a annonc\u00e9 dimanche 5 juillet que le pan de montagne mena\u00e7ant de s&rsquo;effondrer dans le lac du Chambon avait commenc\u00e9 \u00e0 glisser depuis samedi, les autorit\u00e9s privil\u00e9giant d\u00e9sormais plus un glissement qu&rsquo;une \u00ab rupture brutale \u00bb de centaines de milliers de tonnes de roche dans l&rsquo;eau.<\/p>\n<p style=\"text-align: justify;\">De nombreux m\u00e9dias scrutent la montagne et le lac du Chambon depuis samedi 16 h 30, heure \u00e0 laquelle l&rsquo;alarme a retenti pour pr\u00e9venir les riverains de l&rsquo;imminence de l&rsquo;effondrement, qui devait survenir dans les trois heures suivantes.<\/p>\n<p style=\"text-align: justify;\">Alors que l&rsquo;effondrement se faisait d\u00e9sirer, surtout pour les riverains coinc\u00e9s dans la vall\u00e9e, le pr\u00e9fet de l&rsquo;Is\u00e8re a toutefois dit esp\u00e9rer dimanche \u00ab un mouvement massif qui permettra d&rsquo;appr\u00e9hender tr\u00e8s clairement les travaux \u00e0 entreprendre pour r\u00e9tablir la liaison qui fait cruellement d\u00e9faut aux habitants, notamment pour aller au travail \u00bb.<\/p>\n<p style=\"text-align: justify;\">800 000 m\u00e8tres cubes de roches en suspension<\/p>\n<p style=\"text-align: justify;\">\u00ab Les mod\u00e8les confirment que la rupture est engag\u00e9e depuis samedi 17 heures. Sous le hameau des Aymes, le d\u00e9crochage est de 2 m\u00e8tres par jour, c&rsquo;est extr\u00eamement actif. Au-del\u00e0 de ce qu&rsquo;on constate visuellement, la rupture est activ\u00e9e \u00bb, a ajout\u00e9 Jean-Paul Bonnetain lors d&rsquo;un point presse en plein air.<\/p>\n<p style=\"text-align: justify;\">De m\u00eame, \u00ab des d\u00e9gagements gazeux ont \u00e9t\u00e9 relev\u00e9s dans le lac Chambon \u00e0 30 m\u00e8tres de la rive, tout cela t\u00e9moigne de l&rsquo;activit\u00e9 soutenue de la falaise \u00bb, a ajout\u00e9 le pr\u00e9fet.<\/p>\n<p style=\"text-align: justify;\">Les autorit\u00e9s locales ont \u00e9valu\u00e9 \u00e0 800 000 m\u00e8tres cubes le volume des rocs en suspension, en assurant que la vague provoqu\u00e9e par leur effondrement ne devrait pas affecter la structure du barrage en aval, construit au d\u00e9but des ann\u00e9es 30.<\/p>\n<p style=\"text-align: justify;\">Les capteurs install\u00e9s sur les roches instables \u2013 une masse de 200 m\u00e8tres de longueur et 100 m\u00e8tres de hauteur sur 65 m\u00e8tres de profondeur \u2013 laissaient pr\u00e9voir un effondrement ce weekend, ayant mesur\u00e9 une acc\u00e9l\u00e9ration de leur vitesse de glissement.<\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/www.laterredufutur.com\/accueil\/\">TDF<\/a><\/p>\n<p style=\"text-align: justify;\">Source et extrait : <a href=\"https:\/\/www.lemonde.fr\/\">http:\/\/www.lemonde.fr\/<\/a><\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Le pr\u00e9fet de l&rsquo;Is\u00e8re, Jean-Paul Bonnetain, a annonc\u00e9 dimanche 5 juillet que le pan de montagne mena\u00e7ant de s&rsquo;effondrer dans&#8230;<\/p>\n","protected":false},"author":1,"featured_media":7613,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"ngg_post_thumbnail":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[19],"tags":[1276,56,4537,4536,3178,4535,932,4538],"class_list":["post-7612","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seismes-et-volcans","tag-effondrement","tag-france","tag-glissement","tag-isere","tag-lac","tag-lac-de-chambon","tag-montagne","tag-terrain","wpcat-19-id"],"jetpack_shortlink":"https:\/\/wp.me\/p631RN-1YM","jetpack-related-posts":[{"id":23022,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-puissant-essaim-sismique-a-la-palma-suggere-lintrusion-de-magma-dans-le-volcan-cumbre-vieja\/","url_meta":{"origin":7612,"position":0},"title":"Un puissant essaim sismique \u00e0 La Palma sugg\u00e8re l&rsquo;intrusion de magma dans le volcan Cumbre Vieja","author":"Fred Demars","date":"13 septembre 2021","format":false,"excerpt":"Un fort essaim de s\u00e9ismes a d\u00e9but\u00e9 hier sous la zone du volcan La Cumbre Vieja, dans la partie sud de l'\u00eele de La Palma aux Iles Canaries. 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Il permet de dater plus pr\u00e9cis\u00e9ment le tsunami qui a frapp\u00e9 ses rives il y a 1500 ans. \"Une gigantesque masse de roches a pouss\u00e9 les s\u00e9diments\u2026","rel":"","context":"Dans &quot;Ev\u00e8nement Brutal&quot;","block_context":{"text":"Ev\u00e8nement Brutal","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/evenement-brutal\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/07\/lac-leman.jpg?fit=960%2C641&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/07\/lac-leman.jpg?fit=960%2C641&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/07\/lac-leman.jpg?fit=960%2C641&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/07\/lac-leman.jpg?fit=960%2C641&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":30418,"url":"https:\/\/www.laterredufutur.com\/accueil\/nemrut-un-volcan-turc-coupe-en-deux-entre-lac-profond-et-terres-brulantes\/","url_meta":{"origin":7612,"position":2},"title":"Nemrut : un volcan turc coup\u00e9 en deux, entre lac profond et terres br\u00fblantes","author":"Fred Demars","date":"17 octobre 2026","format":false,"excerpt":"Au-dessus du lac de Van, dans l\u2019est de la Turquie, le volcan Nemrut offre un spectacle saisissant : une immense caldeira dont une moiti\u00e9 est occup\u00e9e par un lac bleu profond, tandis que l\u2019autre est couverte de coul\u00e9es de lave, de d\u00f4mes volcaniques et de crat\u00e8res. Cette s\u00e9paration spectaculaire n\u2019est\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/10\/Nemrut-Turquie-volcan.jpg?fit=1200%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/10\/Nemrut-Turquie-volcan.jpg?fit=1200%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/10\/Nemrut-Turquie-volcan.jpg?fit=1200%2C900&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/10\/Nemrut-Turquie-volcan.jpg?fit=1200%2C900&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/10\/Nemrut-Turquie-volcan.jpg?fit=1200%2C900&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":10188,"url":"https:\/\/www.laterredufutur.com\/accueil\/immense-coulee-de-boue-en-chine-dans-un-site-industriel\/","url_meta":{"origin":7612,"position":3},"title":"Immense coul\u00e9e de boue en Chine dans un site industriel","author":"Fred Demars","date":"22 d\u00e9cembre 2015","format":false,"excerpt":"Les vid\u00e9os amateurs diffus\u00e9es par la t\u00e9l\u00e9vision chinoise montrent l\u2019ampleur du d\u00e9sastre qui a frapp\u00e9, dimanche 20 d\u00e9cembre 2015 vers midi, un parc industriel de Shenzhen, le berceau de l\u2019ouverture \u00e9conomique chinoise, dans le sud du pays : une coul\u00e9e de boue s\u2019avance vers un immeuble de trois \u00e9tages et\u2026","rel":"","context":"Dans &quot;Pollution&quot;","block_context":{"text":"Pollution","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/pollution\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/coulee-de-boue-batiment-effondre-chine-1.jpg?fit=900%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/coulee-de-boue-batiment-effondre-chine-1.jpg?fit=900%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/coulee-de-boue-batiment-effondre-chine-1.jpg?fit=900%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/coulee-de-boue-batiment-effondre-chine-1.jpg?fit=900%2C675&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":12858,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-maison-seffondre-subitement-au-japon\/","url_meta":{"origin":7612,"position":4},"title":"Une maison s&rsquo;effondre subitement au Japon","author":"Fred Demars","date":"4 juillet 2016","format":false,"excerpt":"Suite \u00e0 de tr\u00e8s fortes pluies le 29 juin 2016, un glissement de terrain a emport\u00e9 une maison. 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Les Alpes sont particuli\u00e8rement touch\u00e9es, avec 17 000 foyers priv\u00e9s d'\u00e9lectricit\u00e9 en Haute-Savoie, 7000 en Is\u00e8re et 5000 en Savoie.\u2026","rel":"","context":"Dans &quot;M\u00e9t\u00e9orologie&quot;","block_context":{"text":"M\u00e9t\u00e9orologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/meteorologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/wordpress\/wp-content\/uploads\/2012\/10\/meteo-281012-22.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/lac-chambon.jpg?fit=1280%2C849&ssl=1","_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/7612","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=7612"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/7612\/revisions"}],"predecessor-version":[{"id":7614,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/7612\/revisions\/7614"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/7613"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=7612"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=7612"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=7612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}