{"id":23262,"date":"2017-04-16T23:34:52","date_gmt":"2017-04-16T23:34:52","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/?p=23262"},"modified":"2017-04-16T23:34:52","modified_gmt":"2017-04-16T23:34:52","slug":"meethotamulla-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2017\/04\/16\/meethotamulla-1\/","title":{"rendered":"The Meethotamulla garbage dump disaster in Sri Lanka"},"content":{"rendered":"<h5>The Meethotamulla garbage dump disaster in Sri Lanka<\/h5>\n<p>At the time of writing, the loss of life from the landslide at the Meethotamulla garbage dump in Colombo, Sri Lanka is 26 people, with reports varying as to how many more victims have yet to be recovered.\u00a0 <a href=\"http:\/\/www.defence.lk\/new.asp?fname=Relief_operations_still_underway_at_Meethotamulla_20170416_02\">A press release from the Ministry of Defence in Sri Lanka<\/a>, which is leading the response, indicates that 145 houses have been buried. This is of course the <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2017\/03\/17\/koshe-1\/\">second major garbage dump landslide this year<\/a>.<\/p>\n<p>The most informative images that I have seen of Meethotamulla landslide were <a href=\"https:\/\/twitter.com\/AzzamAmeen\/status\/853112789912633344\">tweeted by Azzam Ameen<\/a> (a BBC reporter) on Saturday.\u00a0 They were apparently collected by the Sri Lankan Air Force.\u00a0 This image shows an overview of the Meethotamulla site, with the failed side of the dump clearly shown by the freshly exposed garbage:-<\/p>\n<div id=\"attachment_23293\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-23293\" class=\"size-full wp-image-23293\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2017\/04\/17_04-Sri-Lanka-2-e1492383744142.jpg\" alt=\"Meethotamulla\" width=\"640\" height=\"431\" \/><p id=\"caption-attachment-23293\" class=\"wp-caption-text\">Sir Lanka Air Force image of the Meethotamulla garbage dump landslide, as <a href=\"https:\/\/twitter.com\/AzzamAmeen\/status\/853112789912633344\">tweeted by Azzam Ameen<\/a><\/p><\/div>\n<p>.<\/p>\n<p>According to Google Earth the dump is about 380 metres long. From the image it appears that the landslide is a pseudo-rotational slip that has formed a very steep back scar (further work is going to be needed to make this site safe before the rainy season begins).\u00a0 The slide appears to have engulfed houses along a large section of the toe.\u00a0 The interaction with the buildings is complex, as this image (from the same source) shows:<\/p>\n<div id=\"attachment_23289\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-23289\" class=\"size-full wp-image-23289\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2017\/04\/17_04-Sri-Lanka-1-e1492384026435.jpg\" alt=\"Meethotamulla\" width=\"640\" height=\"422\" \/><p id=\"caption-attachment-23289\" class=\"wp-caption-text\">Image of damage caused by the Meethotamulla garbage dump landslide in Sri Lanka. Image from the Sri Lanka Air Force, <a href=\"https:\/\/twitter.com\/AzzamAmeen\/status\/853112789912633344\">tweeted by Azzam Ameen<\/a>.<\/p><\/div>\n<p>.<\/p>\n<p>It appears that the debris has over-ridden some buildings, but bulldozed others to incorporate them into the landslide:<\/p>\n<div id=\"attachment_23312\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-23312\" class=\"size-full wp-image-23312\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2017\/04\/17_04-Sri-Lanka-3-e1492384203360.jpg\" alt=\"Meethotamulla\" width=\"640\" height=\"425\" \/><p id=\"caption-attachment-23312\" class=\"wp-caption-text\">Image of damage caused by the Meethotamulla garbage dump landslide in Sri Lanka. Image from the Sri Lanka Air Force, <a href=\"https:\/\/twitter.com\/AzzamAmeen\/status\/853112789912633344\">tweeted by Azzam Ameen<\/a>.<\/p><\/div>\n<p>.<\/p>\n<p>This disaster did not come out of the blue.\u00a0 <a href=\"http:\/\/www.hirunews.lk\/140772\/meetotamulla-garbage-issue-re-emerges\">This article<\/a>, from August last year, highlights grave concerns about the stability of the Meethotamulla site.\u00a0 It includes this image, which clearly shows that mass movements were occurring in the garbage:<\/p>\n<div id=\"attachment_23318\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-23318\" class=\"size-full wp-image-23318\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2017\/04\/17_04-Sri-Lanka-4-e1492384602473.jpg\" alt=\"Meethotamulla\" width=\"640\" height=\"363\" \/><p id=\"caption-attachment-23318\" class=\"wp-caption-text\">Hiru News image from August 2016 that clearly shows instability in the Meethotamulla garbage mound<\/p><\/div>\n<p>.<\/p>\n<p>It is undeniable that this site was unsafe.\u00a0 The garbage mound is clearly too high and too steep, inviting a rotational failure.\u00a0 With houses so close to the toe of the slope the hazards were severe.\u00a0 I am no expert on garbage dump landslides, but it seems likely that the decay of the waste will cause it to weaken with time, increasing the risk.\u00a0 In addition, in a humid monsoonal climate, the pore pressures are also likely to increase with time (as is well-documented in embankments, for example).\u00a0 Thus, the stability of this slope was probably decreasing even without the addition of further garbage.<\/p>\n<p>This is another case in which we know and understand the hazards, but fail to manage them.\u00a0 The results are once again tragic.<\/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>The Meethotamulla garbage dump in Colombo, Sri Lanka is now known to have killed at least 26 people. Images suggest this was a disaster waiting to happen.<!-- 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":23289,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[469,118,959,72,3773,861],"class_list":["post-23262","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-featured","tag-garbage","tag-landslide-report","tag-south-asia","tag-sr-lanka","tag-waste"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/23262","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=23262"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/23262\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/23289"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=23262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=23262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=23262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}