{"id":7000,"date":"2018-03-09T17:34:59","date_gmt":"2018-03-09T16:34:59","guid":{"rendered":"http:\/\/eurekaweb.fr\/wp\/?p=7000"},"modified":"2019-06-02T11:36:18","modified_gmt":"2019-06-02T09:36:18","slug":"barrages-iiie-millenaire","status":"publish","type":"post","link":"https:\/\/eurekaweb.fr\/wp\/barrages-iiie-millenaire\/","title":{"rendered":"Barrages (IIIe mill\u00e9naire)"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;7000&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 vote)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Barrages (IIIe mill\u00e9naire)&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Rate this post<\/span>\n    <\/div>\n    <\/div>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/eurekaweb.fr\/wp\/wp-content\/uploads\/2016\/03\/barrage-dam-lawtonka.jpg?resize=300%2C197\" alt=\"barrage-dam-lawtonka\" width=\"300\" height=\"197\" class=\"aligncenter size-full wp-image-7001\" \/><br \/>\nLes premiers barrages, construits au IIIe mill\u00e9naire avant J.C. servaient essentiellement de r\u00e9serve d\u2019eau, celle-ci \u00e9tant achemin\u00e9e par aqueducs ou par canaux. Il s\u2019agissait de digues de terre ou de roches \u00ab assises \u00bb au fond de l\u2019eau, pour soutenir et prot\u00e9ger. Vers 1920, les Am\u00e9ricains ont repris l\u2019id\u00e9e de ce proc\u00e9d\u00e9 antique (Fort Peck, USA). Puis de tels barrages ont \u00e9t\u00e9 \u00e9tablis un peu partout : Serre-Pon\u00e7on (France), la baie James (Canada)\u2026<br \/>\nLe barrage-poids est un mur \u00e9pais qui, comme la digue en terre, r\u00e9siste par sa masse \u00e0 la pouss\u00e9e des eaux. Le premier barrage-poids a \u00e9t\u00e9 \u00e9difi\u00e9 en ma\u00e7onnerie, \u00e0 Furens, pr\u00e8s de Saint-Etienne, de 1861 \u00e0 1867;  A partir de 1900, on a remplac\u00e9 la ma\u00e7onnerie par du b\u00e9ton.<br \/>\nLe barrage-vo\u00fbte est un arc horizontal qui reporte la pouss\u00e9e des eaux sur les rives. Fran\u00e7ois Zola, le p\u00e8re du romancier, a construit de 1843 \u00e0 1869 le premier barrage de ce type, pr\u00e8s d\u2019Aix-en-Provence.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les premiers barrages, construits au IIIe mill\u00e9naire avant J.C. servaient essentiellement de r\u00e9serve d\u2019eau, celle-ci \u00e9tant achemin\u00e9e par aqueducs ou par canaux. Il s\u2019agissait de <\/p>\n","protected":false},"author":1,"featured_media":7001,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[4993,13],"class_list":["post-7000","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciences-techniques","tag-barrage","tag-invention","has_thumb"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Barrages (IIIe mill\u00e9naire)<\/title>\n<meta name=\"description\" content=\"Les premiers barrages, construits au IIIe mill\u00e9naire avant J.C. servaient essentiellement de r\u00e9serve d\u2019eau, celle-ci \u00e9tant achemin\u00e9e par aqueducs ou par\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/eurekaweb.fr\/wp\/barrages-iiie-millenaire\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Barrages (IIIe mill\u00e9naire)\" \/>\n<meta property=\"og:description\" content=\"Les premiers barrages, construits au IIIe mill\u00e9naire avant J.C. servaient essentiellement de r\u00e9serve d\u2019eau, celle-ci \u00e9tant achemin\u00e9e par aqueducs ou par\" \/>\n<meta property=\"og:url\" content=\"https:\/\/eurekaweb.fr\/wp\/barrages-iiie-millenaire\/\" \/>\n<meta property=\"og:site_name\" content=\"urekaWEB : les inventions qui changent le monde, de la roue \u00e0 l\u2019IA\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/EurekawebInvent\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/EurekawebInvent\" \/>\n<meta property=\"article:published_time\" content=\"2018-03-09T16:34:59+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-06-02T09:36:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/eurekaweb.fr\/wp\/wp-content\/uploads\/2016\/03\/barrage-dam-lawtonka.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"300\" \/>\n\t<meta property=\"og:image:height\" content=\"197\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Patrice PAVO\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@EurekawebInvent\" \/>\n<meta name=\"twitter:site\" content=\"@EurekawebInvent\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Patrice PAVO\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/eurekaweb.fr\/wp\/barrages-iiie-millenaire\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/eurekaweb.fr\/wp\/barrages-iiie-millenaire\/\"},\"author\":{\"name\":\"Patrice PAVO\",\"@id\":\"https:\/\/eurekaweb.fr\/wp\/#\/schema\/person\/d43605ef0d5681c1b27a4ba1fede1cf4\"},\"headline\":\"Barrages (IIIe mill\u00e9naire)\",\"datePublished\":\"2018-03-09T16:34:59+00:00\",\"dateModified\":\"2019-06-02T09:36:18+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/eurekaweb.fr\/wp\/barrages-iiie-millenaire\/\"},\"wordCount\":174,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/eurekaweb.fr\/wp\/#organization\"},\"image\":{\"@id\":\"https:\/\/eurekaweb.fr\/wp\/barrages-iiie-millenaire\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/i0.wp.com\/eurekaweb.fr\/wp\/wp-content\/uploads\/2016\/03\/barrage-dam-lawtonka.jpg?fit=300%2C197&ssl=1\",\"keywords\":[\"barrage\",\"invention\"],\"articleSection\":[\"Sciences &amp; 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