{"id":443,"date":"2025-06-03T11:50:53","date_gmt":"2025-06-03T09:50:53","guid":{"rendered":"https:\/\/versionbeta.ovh\/gravimep\/?page_id=443"},"modified":"2025-06-03T12:56:08","modified_gmt":"2025-06-03T10:56:08","slug":"cavites-repertoriees-dans-les-hauts-de-france","status":"publish","type":"page","link":"https:\/\/versionbeta.ovh\/gravimep\/hauts-de-france\/cavites-repertoriees-dans-les-hauts-de-france\/","title":{"rendered":"Cavit\u00e9s r\u00e9pertori\u00e9es dans les Hauts-de-France\u00a0"},"content":{"rendered":"<h1>Cavit\u00e9s r\u00e9pertori\u00e9es dans les Hauts-de-France : <br class=\"uk-visible@m\" \/>\u00e9tat des lieux et pr\u00e9vention<\/h1>\n<h2>Une r\u00e9gion riche en sous-sols complexes<\/p>\n<\/h2>\n<div>\n<p class=\"uk-text-bold uk-text-secondary\">Les <strong>Hauts-de-France<\/strong> comptent plusieurs milliers de <strong>cavit\u00e9s souterraines<\/strong> recens\u00e9es, r\u00e9parties entre :<\/p>\n<ul class=\"uk-list uk-list-secondary uk-list-circle\">\n<li>Anciennes <strong>marni\u00e8res<\/strong> (extraction de craie)<\/li>\n<li><strong>Catiches<\/strong> et <strong>boves<\/strong> sous les centres historiques<\/li>\n<li><strong>Tunnels militaires<\/strong> et galeries anciennes<\/li>\n<li><strong>Cavit\u00e9s naturelles<\/strong> d\u2019origine karstique<\/li>\n<\/ul>\n<p class=\"uk-text-bold\">Ces cavit\u00e9s, m\u00eame r\u00e9pertori\u00e9es, pr\u00e9sentent encore <strong>des incertitudes<\/strong> sur leur <strong>profondeur<\/strong>, <strong>\u00e9tendue<\/strong> et <strong>stabilit\u00e9<\/strong>.<\/p>\n<\/div>\n<div>\n<div>\n<p>Voir aussi :  <a href=\"\/gravimep\/detection-des-cavites\/detection-des-cavites-karstiques\/\"> Sols karstiques<\/a><\/p>\n<\/div>\n<\/div>\n<p><img decoding=\"async\" src=\"\/gravimep\/wp-content\/uploads\/2025\/05\/technicien-Geophysique-sur-le-terrain-etude-des-sols.jpg\" alt=\"G\u00e9ophysicien avec un gravim\u00e8tre sur le terrain\"><\/p>\n<h2>Qu\u2019est-ce qu\u2019une cavit\u00e9 r\u00e9pertori\u00e9e ?<\/h2>\n<div>\n<p class=\"uk-text-bold uk-text-secondary\">Une cavit\u00e9 est dite \u201cr\u00e9pertori\u00e9e\u201d lorsqu\u2019elle figure sur :<\/p>\n<ul class=\"uk-list uk-list-secondary uk-list-circle\">\n<li>Une <strong>base de donn\u00e9es officielle<\/strong> (BRGM, DREAL, DDTM\u2026)<\/li>\n<li>Un <strong>document d\u2019urbanisme<\/strong> (PLU, cartes communales)<\/li>\n<li>Un <strong>rapport de diagnostic<\/strong> ancien ou r\u00e9cent<\/li>\n<li>Des <strong>archives historiques<\/strong> ou plans cadastraux anciens<\/li>\n<\/ul>\n<p class=\"uk-text-bold\">| Ces informations sont utiles mais <strong>souvent incompl\u00e8tes<\/strong> ou <strong>obsol\u00e8tes<\/strong>.<\/p>\n<\/div>\n<p><img decoding=\"async\" src=\"\/gravimep\/wp-content\/uploads\/2025\/05\/technicien-Geophysique-sur-le-terrain-etude-des-sols.jpg\" alt=\"G\u00e9ophysicien avec un gravim\u00e8tre sur le terrain\"><\/p>\n<h2>Carte non exhaustive des zones concern\u00e9es<br \/>\n<\/h2>\n<div>\n<p class=\"uk-text-bold uk-text-secondary\">Parmi les zones les plus sensibles :<\/p>\n<ul class=\"uk-list uk-list-secondary uk-list-circle\">\n<li>Lille (boves, catiches)<\/li>\n<li>Oise (nombreuses marni\u00e8res)<\/li>\n<li>Somme et Aisne (r\u00e9seau karstique actif)<\/li>\n<li>Douai, Arras, B\u00e9thune (carri\u00e8res et exploitation souterraine)<\/li>\n<\/ul>\n<p class=\"uk-text-bold\">Ces zones sont majoritairement en <strong>zone d\u2019al\u00e9a fort ou mod\u00e9r\u00e9<\/strong> au regard des risques d\u2019effondrement.<\/p>\n<\/div>\n<div>\n<div>\n<p>Voir aussi notre page : <a href=\"\/gravimep\/gravimetres-utilises-en-microgravimetrie\"> Lille et environs<\/a><\/p>\n<\/div>\n<\/div>\n<p><img decoding=\"async\" src=\"\/gravimep\/wp-content\/uploads\/2025\/05\/carte-gravimetrique-avec-zone-colore.jpg\" alt=\"Carte gravim\u00e9trique avec zones color\u00e9es\"><\/p>\n<h2>Pourquoi une cavit\u00e9 r\u00e9pertori\u00e9e reste un risque ?<br \/>\n<\/h2>\n<div>\n<p class=\"uk-text-bold uk-text-secondary\">M\u00eame connue, une cavit\u00e9 :<\/p>\n<ul class=\"uk-list uk-list-secondary uk-list-circle\">\n<li>Peut <strong>\u00e9voluer avec le temps<\/strong> (\u00e9rosion, saturation en eau)<\/li>\n<li>Peut \u00eatre <strong>mal localis\u00e9e<\/strong> ou <strong>partiellement combl\u00e9e<\/strong><\/li>\n<li>Peut <strong>influencer la portance du terrain<\/strong> en surface<\/li>\n<\/ul>\n<p class=\"uk-text-bold\">Il est donc essentiel de <strong>v\u00e9rifier l\u2019\u00e9tat r\u00e9el du sous-sol avant tout projet<\/strong>.<\/p>\n<\/div>\n<p><img decoding=\"async\" src=\"\/gravimep\/wp-content\/uploads\/2025\/05\/geophysicien-devant-un-ecran.jpg\" alt=\"G\u00e9ophysicien devant les donn\u00e9es \u00e0 trait\u00e9es\"><\/p>\n<h2>Notre approche GRAVIMEP<\/h2>\n<div>\n<p class=\"uk-text-bold uk-text-emphasis\">Nous croisons :<\/p>\n<ul class=\"uk-list \">\n<li>Les <strong>bases de donn\u00e9es officielles<\/strong><\/li>\n<li>L\u2019<strong>analyse historique<\/strong> et cartographique<\/li>\n<li>La <strong>microgravim\u00e9trie de terrain<\/strong> pour confirmation ou invalidation<\/li>\n<\/ul>\n<\/div>\n<p><p>\n        <a href=\"\/gravimep\/detection-des-cavites\/\">En savoir plus sur la microgravim\u00e9trie appliqu\u00e9e \u00e0 la d\u00e9tection de cavit\u00e9s<\/a>\n    <\/p>\n<\/p>\n<h2>Vous \u00eates en pr\u00e9sence d\u2019une cavit\u00e9 connue ? <br \/>Voici la marche \u00e0 suivre :<br \/>\n<\/h2>\n<div>\n<ol class=\"uk-list uk-list-decimal\">\n<li>Rechercher si votre terrain est situ\u00e9 en zone \u00e0 risque<\/li>\n<li>Obtenir les donn\u00e9es historiques disponibles (BRGM, PLU, mairie)<\/li>\n<li>Faire confirmer ou infirmer par une \u00e9tude gravim\u00e9trique cibl\u00e9e<\/li>\n<li>Adapter le projet si n\u00e9cessaire<\/li>\n<\/ol>\n<\/div>\n<div>\n<ol class=\"uk-list uk-list-decimal\">\n<li>Rechercher si votre terrain est situ\u00e9 en zone \u00e0 risque<\/li>\n<li>Obtenir les donn\u00e9es historiques disponibles (BRGM, PLU, mairie)<\/li>\n<li>Faire confirmer ou infirmer par une \u00e9tude gravim\u00e9trique cibl\u00e9e<\/li>\n<li>Adapter le projet si n\u00e9cessaire<\/li>\n<\/ol>\n<\/div>\n<p><p>\n        <a href=\"\/gravimep\/risques-prevention\/diagnostic-pre-construction\/\"> Voir notre service Diagnostic pr\u00e9-construction<\/a>\n    <\/p>\n<\/p>\n<h4>Besoin d\u2019un \u00e9tat des lieux pr\u00e9cis ?<br \/>\n<\/h4>\n<div>\n<p class=\"uk-text-bold uk-text-emphasis\">Contactez notre \u00e9quipe pour :<\/p>\n<ul class=\"uk-list \">\n<li>L\u2019analyse de votre commune ou de votre parcelle<\/li>\n<li>La localisation pr\u00e9cise de cavit\u00e9s par microgravim\u00e9trie<\/li>\n<li>Une \u00e9tude document\u00e9e et exploitable aupr\u00e8s des assureurs, notaires, services d\u2019urbanisme<\/li>\n<\/ul>\n<p class=\"uk-text-bold\">\ud83d\udd58 Disponibles 5j\/7 \u2014 Devis sous 48h \u2014 Expertise r\u00e9gionale depuis 1987<\/p>\n<\/div>\n<p><p>\n        <a href=\"\/gravimep\/contact\">Contactez-nous d\u00e8s maintenant<\/a>\n    <\/p>\n<\/p>\n<p><!--more--><br \/>\n<!-- {\"type\":\"layout\",\"children\":[{\"type\":\"section\",\"props\":{\"image_position\":\"center-center\",\"style\":\"muted\",\"title_breakpoint\":\"xl\",\"title_position\":\"top-left\",\"title_rotation\":\"left\",\"vertical_align\":\"middle\",\"width\":\"default\"},\"children\":[{\"type\":\"row\",\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"padding\":\"xsmall\",\"position_sticky_breakpoint\":\"m\",\"style\":\"card-secondary\"},\"children\":[{\"type\":\"headline\",\"props\":{\"content\":\"Cavit\\u00e9s r\\u00e9pertori\\u00e9es dans les Hauts-de-France : <br class=\\\"uk-visible@m\\\" \\\/>\\u00e9tat des lieux et pr\\u00e9vention\",\"text_align\":\"center\",\"title_color\":\"secondary\",\"title_element\":\"h1\",\"title_font_family\":\"default\",\"title_style\":\"h2\"}},{\"type\":\"breadcrumbs\",\"props\":{\"show_current\":true,\"show_home\":true,\"text_align\":\"center\"}}]}]},{\"type\":\"row\",\"props\":{\"layout\":\"1-2,1-2\",\"margin\":\"xlarge\"},\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\",\"vertical_align\":\"middle\",\"width_medium\":\"1-2\"},\"children\":[{\"type\":\"headline\",\"props\":{\"content\":\"Une r\\u00e9gion riche en sous-sols complexes\\n\\n\",\"title_element\":\"h2\",\"title_style\":\"h3\"}},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"\n\n<p class=\\\"uk-text-bold uk-text-secondary\\\">Les <strong>Hauts-de-France<\\\/strong> comptent plusieurs milliers de <strong>cavit\\u00e9s souterraines<\\\/strong> recens\\u00e9es, r\\u00e9parties entre :<\\\/p>\\n\n\n<ul class=\\\"uk-list uk-list-secondary uk-list-circle\\\">\\n\n\n<li>Anciennes <strong>marni\\u00e8res<\\\/strong> (extraction de craie)<\\\/li>\\n\n\n<li><strong>Catiches<\\\/strong> et <strong>boves<\\\/strong> sous les centres historiques<\\\/li>\\n\n\n<li><strong>Tunnels militaires<\\\/strong> et galeries anciennes<\\\/li>\\n\n\n<li><strong>Cavit\\u00e9s naturelles<\\\/strong> d\\u2019origine karstique<\\\/li>\\n<\\\/ul>\\n\n\n<p class=\\\"uk-text-bold\\\">Ces cavit\\u00e9s, m\\u00eame r\\u00e9pertori\\u00e9es, pr\\u00e9sentent encore <strong>des incertitudes<\\\/strong> sur leur <strong>profondeur<\\\/strong>, <strong>\\u00e9tendue<\\\/strong> et <strong>stabilit\\u00e9<\\\/strong>.<\\\/p>\",\"margin\":\"default\",\"text_align\":\"justify\"}},{\"type\":\"panel\",\"props\":{\"content\":\"\n\n<p>Voir aussi :  <a href=\\\"detection-des-cavites\\\/detection-des-cavites-karstiques\\\/\\\"> Sols karstiques<\\\/a><\\\/p>\",\"content_column_breakpoint\":\"m\",\"content_style\":\"text-small\",\"icon\":\"link-external\",\"icon_width\":\"30\",\"image_align\":\"right\",\"image_grid_breakpoint\":\"\",\"image_grid_width\":\"auto\",\"image_svg_color\":\"emphasis\",\"image_vertical_align\":true,\"link_style\":\"default\",\"link_text\":\"Read more\",\"margin\":\"default\",\"meta_align\":\"below-title\",\"meta_element\":\"div\",\"meta_style\":\"text-meta\",\"panel_style\":\"card-primary\",\"text_align\":\"center\",\"title_align\":\"top\",\"title_element\":\"h3\",\"title_grid_breakpoint\":\"m\",\"title_grid_width\":\"1-2\",\"title_hover_style\":\"reset\"}}]},{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\",\"vertical_align\":\"middle\",\"width_medium\":\"1-2\"},\"children\":[{\"type\":\"image\",\"props\":{\"image\":\"wp-content\\\/uploads\\\/2025\\\/05\\\/technicien-Geophysique-sur-le-terrain-etude-des-sols.jpg\",\"image_alt\":\"G\\u00e9ophysicien avec un gravim\\u00e8tre sur le terrain\",\"image_border\":\"rounded\",\"image_box_decoration\":\"secondary\",\"image_box_shadow\":\"large\",\"image_height\":600,\"image_loading\":true,\"image_svg_color\":\"emphasis\",\"image_width\":600,\"margin\":\"default\",\"text_align\":\"center\"}}]}]},{\"type\":\"row\",\"props\":{\"layout\":\"1-2,1-2\",\"margin\":\"xlarge\"},\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\",\"vertical_align\":\"middle\",\"width_medium\":\"1-2\"},\"children\":[{\"type\":\"headline\",\"props\":{\"content\":\"Qu\\u2019est-ce qu\\u2019une cavit\\u00e9 r\\u00e9pertori\\u00e9e ?\",\"title_element\":\"h2\",\"title_style\":\"h3\"}},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"\n\n<p class=\\\"uk-text-bold uk-text-secondary\\\">Une cavit\\u00e9 est dite \\u201cr\\u00e9pertori\\u00e9e\\u201d lorsqu\\u2019elle figure sur :<\\\/p>\\n\n\n<ul class=\\\"uk-list uk-list-secondary uk-list-circle\\\">\\n\n\n<li>Une <strong>base de donn\\u00e9es officielle<\\\/strong> (BRGM, DREAL, DDTM\\u2026)<\\\/li>\\n\n\n<li>Un <strong>document d\\u2019urbanisme<\\\/strong> (PLU, cartes communales)<\\\/li>\\n\n\n<li>Un <strong>rapport de diagnostic<\\\/strong> ancien ou r\\u00e9cent<\\\/li>\\n\n\n<li>Des <strong>archives historiques<\\\/strong> ou plans cadastraux anciens<\\\/li>\\n<\\\/ul>\\n\n\n<p class=\\\"uk-text-bold\\\">| Ces informations sont utiles mais <strong>souvent incompl\\u00e8tes<\\\/strong> ou <strong>obsol\\u00e8tes<\\\/strong>.<\\\/p>\",\"margin\":\"default\",\"text_align\":\"justify\"}}]},{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"order_first\":\"m\",\"position_sticky_breakpoint\":\"m\",\"vertical_align\":\"middle\",\"width_medium\":\"1-2\"},\"children\":[{\"type\":\"image\",\"props\":{\"image\":\"wp-content\\\/uploads\\\/2025\\\/05\\\/technicien-Geophysique-sur-le-terrain-etude-des-sols.jpg\",\"image_alt\":\"G\\u00e9ophysicien avec un gravim\\u00e8tre sur le terrain\",\"image_border\":\"rounded\",\"image_box_decoration\":\"secondary\",\"image_box_shadow\":\"large\",\"image_height\":600,\"image_loading\":true,\"image_svg_color\":\"emphasis\",\"image_width\":600,\"margin\":\"default\",\"text_align\":\"center\"}}]}]},{\"type\":\"row\",\"props\":{\"layout\":\"1-2,1-2\",\"margin\":\"xlarge\"},\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\",\"vertical_align\":\"middle\",\"width_medium\":\"1-2\"},\"children\":[{\"type\":\"headline\",\"props\":{\"content\":\"Carte non exhaustive des zones concern\\u00e9es\\n\",\"title_element\":\"h2\",\"title_style\":\"h3\"}},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"\n\n<p class=\\\"uk-text-bold uk-text-secondary\\\">Parmi les zones les plus sensibles :<\\\/p>\\n\n\n<ul class=\\\"uk-list uk-list-secondary uk-list-circle\\\">\\n\n\n<li>Lille (boves, catiches)<\\\/li>\\n\n\n<li>Oise (nombreuses marni\\u00e8res)<\\\/li>\\n\n\n<li>Somme et Aisne (r\\u00e9seau karstique actif)<\\\/li>\\n\n\n<li>Douai, Arras, B\\u00e9thune (carri\\u00e8res et exploitation souterraine)<\\\/li>\\n<\\\/ul>\\n\n\n<p class=\\\"uk-text-bold\\\">Ces zones sont majoritairement en <strong>zone d\\u2019al\\u00e9a fort ou mod\\u00e9r\\u00e9<\\\/strong> au regard des risques d\\u2019effondrement.<\\\/p>\",\"margin\":\"default\",\"text_align\":\"justify\"}},{\"type\":\"panel\",\"props\":{\"content\":\"\n\n<p>Voir aussi notre page : <a href=\\\"gravimetres-utilises-en-microgravimetrie\\\"> Lille et environs<\\\/a><\\\/p>\",\"content_column_breakpoint\":\"m\",\"content_style\":\"text-small\",\"icon\":\"link-external\",\"icon_width\":\"30\",\"image_align\":\"right\",\"image_grid_breakpoint\":\"\",\"image_grid_width\":\"auto\",\"image_svg_color\":\"emphasis\",\"image_vertical_align\":true,\"link_style\":\"default\",\"link_text\":\"Read more\",\"margin\":\"default\",\"meta_align\":\"below-title\",\"meta_element\":\"div\",\"meta_style\":\"text-meta\",\"panel_style\":\"card-primary\",\"text_align\":\"center\",\"title_align\":\"top\",\"title_element\":\"h3\",\"title_grid_breakpoint\":\"m\",\"title_grid_width\":\"1-2\",\"title_hover_style\":\"reset\"}}]},{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\",\"vertical_align\":\"middle\",\"width_medium\":\"1-2\"},\"children\":[{\"type\":\"image\",\"props\":{\"image\":\"wp-content\\\/uploads\\\/2025\\\/05\\\/carte-gravimetrique-avec-zone-colore.jpg\",\"image_alt\":\"Carte gravim\\u00e9trique avec zones color\\u00e9es\",\"image_border\":\"rounded\",\"image_box_decoration\":\"secondary\",\"image_box_shadow\":\"large\",\"image_height\":600,\"image_loading\":true,\"image_svg_color\":\"emphasis\",\"image_width\":600,\"margin\":\"default\",\"text_align\":\"center\"}}]}]},{\"type\":\"row\",\"props\":{\"layout\":\"1-2,1-2\",\"margin\":\"xlarge\"},\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\",\"vertical_align\":\"middle\",\"width_medium\":\"1-2\"},\"children\":[{\"type\":\"headline\",\"props\":{\"content\":\"Pourquoi une cavit\\u00e9 r\\u00e9pertori\\u00e9e reste un risque ?\\n\",\"title_element\":\"h2\",\"title_style\":\"h3\"}},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"\n\n<p class=\\\"uk-text-bold uk-text-secondary\\\">M\\u00eame connue, une cavit\\u00e9 :<\\\/p>\\n\n\n<ul class=\\\"uk-list uk-list-secondary uk-list-circle\\\">\\n\n\n<li>Peut <strong>\\u00e9voluer avec le temps<\\\/strong> (\\u00e9rosion, saturation en eau)<\\\/li>\\n\n\n<li>Peut \\u00eatre <strong>mal localis\\u00e9e<\\\/strong> ou <strong>partiellement combl\\u00e9e<\\\/strong><\\\/li>\\n\n\n<li>Peut <strong>influencer la portance du terrain<\\\/strong> en surface<\\\/li>\\n<\\\/ul>\\n\n\n<p class=\\\"uk-text-bold\\\">Il est donc essentiel de <strong>v\\u00e9rifier l\\u2019\\u00e9tat r\\u00e9el du sous-sol avant tout projet<\\\/strong>.<\\\/p>\",\"margin\":\"default\",\"text_align\":\"justify\"}}]},{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"order_first\":\"m\",\"position_sticky_breakpoint\":\"m\",\"vertical_align\":\"middle\",\"width_medium\":\"1-2\"},\"children\":[{\"type\":\"image\",\"props\":{\"image\":\"wp-content\\\/uploads\\\/2025\\\/05\\\/geophysicien-devant-un-ecran.jpg\",\"image_alt\":\"G\\u00e9ophysicien devant les donn\\u00e9es \\u00e0 trait\\u00e9es\",\"image_border\":\"rounded\",\"image_box_decoration\":\"secondary\",\"image_box_shadow\":\"large\",\"image_height\":600,\"image_loading\":true,\"image_svg_color\":\"emphasis\",\"image_width\":600,\"margin\":\"default\",\"text_align\":\"center\"}}]}]}]},{\"type\":\"section\",\"props\":{\"image_position\":\"center-center\",\"style\":\"secondary\",\"title_breakpoint\":\"xl\",\"title_position\":\"top-left\",\"title_rotation\":\"left\",\"vertical_align\":\"middle\",\"width\":\"default\"},\"children\":[{\"type\":\"row\",\"props\":{\"margin\":\"xlarge\",\"padding_remove_horizontal\":false,\"width\":\"xsmall\"},\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\",\"vertical_align\":\"middle\"},\"children\":[{\"type\":\"headline\",\"props\":{\"content\":\"Notre approche GRAVIMEP\",\"text_align\":\"center\",\"title_decoration\":\"line\",\"title_element\":\"h2\",\"title_style\":\"h3\"}},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"\n\n<p class=\\\"uk-text-bold uk-text-emphasis\\\">Nous croisons :<\\\/p>\\n\n\n<ul class=\\\"uk-list \\\">\\n\n\n<li>Les <strong>bases de donn\\u00e9es officielles<\\\/strong><\\\/li>\\n\n\n<li>L\\u2019<strong>analyse historique<\\\/strong> et cartographique<\\\/li>\\n\n\n<li>La <strong>microgravim\\u00e9trie de terrain<\\\/strong> pour confirmation ou invalidation<\\\/li>\\n<\\\/ul>\",\"margin\":\"default\",\"text_align\":\"center\",\"text_color\":\"emphasis\",\"text_style\":\"lead\"}},{\"type\":\"button\",\"props\":{\"fullwidth\":true,\"grid_column_gap\":\"small\",\"grid_row_gap\":\"small\",\"margin\":\"default\",\"text_align\":\"center\"},\"children\":[{\"type\":\"button_item\",\"props\":{\"button_style\":\"default\",\"content\":\"En savoir plus sur la microgravim\\u00e9trie appliqu\\u00e9e \\u00e0 la d\\u00e9tection de cavit\\u00e9s\",\"dialog_layout\":\"modal\",\"dialog_offcanvas_flip\":true,\"icon\":\"link-external\",\"icon_align\":\"right\",\"link\":\"detection-des-cavites\\\/\"}}]},{\"type\":\"headline\",\"props\":{\"content\":\"Vous \\u00eates en pr\\u00e9sence d\\u2019une cavit\\u00e9 connue ? <br\\\/>Voici la marche \\u00e0 suivre :\\n\",\"text_align\":\"center\",\"title_decoration\":\"line\",\"title_element\":\"h2\",\"title_style\":\"h3\"}},{\"type\":\"text\",\"props\":{\"block_align\":\"center\",\"column_breakpoint\":\"m\",\"content\":\"\n\n<ol class=\\\"uk-list uk-list-decimal\\\">\\n    \n\n<li>Rechercher si votre terrain est situ\\u00e9 en zone \\u00e0 risque<\\\/li>\\n    \n\n<li>Obtenir les donn\\u00e9es historiques disponibles (BRGM, PLU, mairie)<\\\/li>\\n    \n\n<li>Faire confirmer ou infirmer par une \\u00e9tude gravim\\u00e9trique cibl\\u00e9e<\\\/li>\\n    \n\n<li>Adapter le projet si n\\u00e9cessaire<\\\/li>\\n<\\\/ol>\",\"margin\":\"default\",\"position\":\"relative\",\"position_left\":\"55\",\"text_align\":\"justify\",\"text_color\":\"emphasis\",\"text_style\":\"lead\",\"visibility\":\"m\"}},{\"type\":\"text\",\"props\":{\"block_align\":\"center\",\"column_breakpoint\":\"m\",\"content\":\"\n\n<ol class=\\\"uk-list uk-list-decimal\\\">\\n    \n\n<li>Rechercher si votre terrain est situ\\u00e9 en zone \\u00e0 risque<\\\/li>\\n    \n\n<li>Obtenir les donn\\u00e9es historiques disponibles (BRGM, PLU, mairie)<\\\/li>\\n    \n\n<li>Faire confirmer ou infirmer par une \\u00e9tude gravim\\u00e9trique cibl\\u00e9e<\\\/li>\\n    \n\n<li>Adapter le projet si n\\u00e9cessaire<\\\/li>\\n<\\\/ol>\",\"margin\":\"default\",\"position_left\":\"20\",\"text_align\":\"center\",\"text_color\":\"emphasis\",\"text_style\":\"lead\",\"visibility\":\"hidden-m\"}},{\"type\":\"button\",\"props\":{\"fullwidth\":true,\"grid_column_gap\":\"small\",\"grid_row_gap\":\"small\",\"margin\":\"default\",\"text_align\":\"center\"},\"children\":[{\"type\":\"button_item\",\"props\":{\"button_style\":\"default\",\"content\":\" Voir notre service Diagnostic pr\\u00e9-construction\",\"dialog_layout\":\"modal\",\"dialog_offcanvas_flip\":true,\"icon\":\"link-external\",\"icon_align\":\"right\",\"link\":\"risques-prevention\\\/diagnostic-pre-construction\\\/\"}}]}]}]}]},{\"type\":\"section\",\"props\":{\"image_position\":\"center-center\",\"style\":\"default\",\"title_breakpoint\":\"xl\",\"title_position\":\"top-left\",\"title_rotation\":\"left\",\"vertical_align\":\"middle\",\"width\":\"default\"},\"children\":[{\"type\":\"row\",\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\",\"style\":\"tile-primary\"},\"children\":[{\"type\":\"headline\",\"props\":{\"content\":\"Besoin d\\u2019un \\u00e9tat des lieux pr\\u00e9cis ?\\n\",\"text_align\":\"center\",\"title_color\":\"emphasis\",\"title_element\":\"h4\",\"title_style\":\"h3\"}},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"\n\n<p class=\\\"uk-text-bold uk-text-emphasis\\\">Contactez notre \\u00e9quipe pour :<\\\/p>\\n\\n\n\n<ul class=\\\"uk-list \\\">\\n    \n\n<li>L\\u2019analyse de votre commune ou de votre parcelle<\\\/li>\\n    \n\n<li>La localisation pr\\u00e9cise de cavit\\u00e9s par microgravim\\u00e9trie<\\\/li>\\n    \n\n<li>Une \\u00e9tude document\\u00e9e et exploitable aupr\\u00e8s des assureurs, notaires, services d\\u2019urbanisme<\\\/li>\\n<\\\/ul>\\n\\n\n\n<p class=\\\"uk-text-bold\\\">\\ud83d\\udd58 Disponibles 5j\\\/7 \\u2014 Devis sous 48h \\u2014 Expertise r\\u00e9gionale depuis 1987<\\\/p>\",\"margin\":\"default\",\"text_align\":\"center\",\"text_color\":\"emphasis\",\"text_style\":\"large\"}},{\"type\":\"button\",\"props\":{\"fullwidth\":true,\"grid_column_gap\":\"small\",\"grid_row_gap\":\"small\",\"margin\":\"default\",\"text_align\":\"center\"},\"children\":[{\"type\":\"button_item\",\"props\":{\"button_style\":\"default\",\"content\":\"Contactez-nous d\\u00e8s maintenant\",\"dialog_layout\":\"modal\",\"dialog_offcanvas_flip\":true,\"icon\":\"users\",\"icon_align\":\"right\",\"link\":\"contact\"}}]}]}]}]}],\"version\":\"4.5.17\"} --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cavit\u00e9s r\u00e9pertori\u00e9es dans les Hauts-de-France : \u00e9tat des lieux et pr\u00e9vention Une r\u00e9gion riche en sous-sols complexes Les Hauts-de-France comptent plusieurs milliers de cavit\u00e9s souterraines recens\u00e9es, r\u00e9parties entre : Anciennes marni\u00e8res (extraction de craie) Catiches et boves sous les centres historiques Tunnels militaires et galeries anciennes Cavit\u00e9s naturelles d\u2019origine karstique Ces cavit\u00e9s, m\u00eame r\u00e9pertori\u00e9es, pr\u00e9sentent [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":80,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-443","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/versionbeta.ovh\/gravimep\/wp-json\/wp\/v2\/pages\/443","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/versionbeta.ovh\/gravimep\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/versionbeta.ovh\/gravimep\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/versionbeta.ovh\/gravimep\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/versionbeta.ovh\/gravimep\/wp-json\/wp\/v2\/comments?post=443"}],"version-history":[{"count":13,"href":"https:\/\/versionbeta.ovh\/gravimep\/wp-json\/wp\/v2\/pages\/443\/revisions"}],"predecessor-version":[{"id":456,"href":"https:\/\/versionbeta.ovh\/gravimep\/wp-json\/wp\/v2\/pages\/443\/revisions\/456"}],"up":[{"embeddable":true,"href":"https:\/\/versionbeta.ovh\/gravimep\/wp-json\/wp\/v2\/pages\/80"}],"wp:attachment":[{"href":"https:\/\/versionbeta.ovh\/gravimep\/wp-json\/wp\/v2\/media?parent=443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}