{"id":28076,"date":"2018-07-02T06:28:16","date_gmt":"2018-07-02T06:28:16","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=28076"},"modified":"2018-07-02T06:28:17","modified_gmt":"2018-07-02T06:28:17","slug":"guangan-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2018\/07\/02\/guangan-1\/","title":{"rendered":"Guang&#8217;an: a dramatic retaining wall failure video"},"content":{"rendered":"<h4>Guang&#8217;an: a dramatic retaining wall failure video<\/h4>\n<p>Youtube has a cool video showing the impact of a <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2017\/02\/06\/bova-marina-1\/\">retaining wall failure<\/a> in the city of Guang&#8217;an in Sichuan Province, China.\u00a0 The event reportedly occurred early in the morning yesterday (6:50 am on 1st July 2018):<\/p>\n<iframe loading=\"lazy\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/axpyRUIeGow?feature=oembed\" frameborder=\"0\" allow=\"autoplay; encrypted-media\" allowfullscreen><\/iframe>\n<p>.<\/p>\n<p>The event reportedly involved the failure of a 50 m section of retaining wall during heavy rainfall.\u00a0 Interestingly, <a href=\"https:\/\/www.liveleak.com\/view?t=sEaZe_1530430205\">Liveleak has a second video<\/a> that shows a part of the failure of the wall from the foot of the slope.\u00a0 This still is taken from that video:-<\/p>\n<div id=\"attachment_28079\" style=\"width: 233px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-28079\" class=\"wp-image-28079 size-full\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2018\/07\/18_06-retaining-wall-1.jpg\" alt=\"Guang'an\" width=\"223\" height=\"393\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2018\/07\/18_06-retaining-wall-1.jpg 223w, https:\/\/blogs.agu.org\/landslideblog\/files\/2018\/07\/18_06-retaining-wall-1-170x300.jpg 170w\" sizes=\"auto, (max-width: 223px) 100vw, 223px\" \/><p id=\"caption-attachment-28079\" class=\"wp-caption-text\">Retaining wall failure at Guang&#8217;an in Sichuan, China. Still from a <a href=\"https:\/\/www.liveleak.com\/view?t=sEaZe_1530430205\">video on Liveleak.<\/a><\/p><\/div>\n<p>.<\/p>\n<p>I am not quite sure what to make of the images from the videos of the state of the materials behind the unfailed sections of the wall after the failure:-<\/p>\n<div id=\"attachment_28081\" style=\"width: 235px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-28081\" class=\"wp-image-28081 size-full\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2018\/07\/18_06-retaining-wall-2.jpg\" alt=\"Guang'an\" width=\"225\" height=\"391\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2018\/07\/18_06-retaining-wall-2.jpg 225w, https:\/\/blogs.agu.org\/landslideblog\/files\/2018\/07\/18_06-retaining-wall-2-173x300.jpg 173w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><p id=\"caption-attachment-28081\" class=\"wp-caption-text\">The aftermath of the retaining wall failure in Guang&#8217;an, Sichuan Province, China on 1st July 2018. Still from a <a href=\"https:\/\/www.liveleak.com\/view?t=sEaZe_1530430205\">video on Liveleak<\/a>.<\/p><\/div>\n<p>.<\/p>\n<p>The resultant landslide was a classic slump, with the roadway moving downwards and outwards as the support at the toe of the slope failed. <a href=\"http:\/\/e.chengdu.cn\/html\/2018-07\/02\/content_627986.htm\">The Chengdu Economic Daily has an article about the landslide<\/a> (in Mandarin).\u00a0 This article indicates that cracks had started to appear in the fill behind the wall on 22nd June, and that the authorities had been aware of the problem.\u00a0 These cracks enlarged rapidly on the day of the failure, such that local people were able to provide warnings that a failure night occur.\u00a0 The landslide occurred in several phases, starting at 6:50 am, and there was a significant failure at about 11 am too. In total about 50 households have now been evacuated.\u00a0 The slope was reportedly about 30 m in tall. Interestingly there is quite a large section of this wall that remains standing, as the still below shows:<\/p>\n<p>&nbsp;<\/p>\n<div id=\"attachment_28082\" style=\"width: 545px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-28082\" class=\"size-full wp-image-28082\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2018\/07\/18_06-retaining-wall-3.jpg\" alt=\"Guang'an\" width=\"535\" height=\"432\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2018\/07\/18_06-retaining-wall-3.jpg 535w, https:\/\/blogs.agu.org\/landslideblog\/files\/2018\/07\/18_06-retaining-wall-3-300x242.jpg 300w\" sizes=\"auto, (max-width: 535px) 100vw, 535px\" \/><p id=\"caption-attachment-28082\" class=\"wp-caption-text\">The aftermath of the retaining wall failure at Guang&#8217;an in Sichuan, China. Still from a <a href=\"https:\/\/www.youtube.com\/watch?v=KHEOw2MgaXA\">video on Youtube.<\/a><\/p><\/div>\n<p>.<\/p>\n<p>Managing the remaing sections of that wall will be challenge in the forthcoming rainy season.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Yesterday a large retaining wall failed on a tall slope in Guang&#8217;an, Sichuan Province, China.  This event was captured from a number of angles on video, now posted online<!-- AddThis Advanced Settings generic via filter on wp_trim_excerpt --><!-- AddThis Share Buttons generic via filter on wp_trim_excerpt --><\/p>\n","protected":false},"author":22,"featured_media":28082,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[16,881,469,161,15621,35],"class_list":["post-28076","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-china","tag-east-asia","tag-featured","tag-retaining-wall","tag-sinhuan","tag-video"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/28076","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/comments?post=28076"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/28076\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/28082"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=28076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=28076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=28076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}