{"version":"1.0","provider_name":"Robbins","provider_url":"https:\/\/www.robbinstbm.com\/es\/","title":"Challenging Mixed Face Tunneling at India's Sleemanabad Carrier Canal - Robbins","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"go6EskYt6c\"><a href=\"https:\/\/www.robbinstbm.com\/es\/indias-sleemanabad-carrier-canal\/\">Challenging Mixed Face Tunneling at India&#8217;s Sleemanabad Carrier Canal<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.robbinstbm.com\/es\/indias-sleemanabad-carrier-canal\/embed\/#?secret=go6EskYt6c\" width=\"600\" height=\"338\" title=\"&#8220;Challenging Mixed Face Tunneling at India&#8217;s Sleemanabad Carrier Canal&#8221; &#8212; Robbins\" data-secret=\"go6EskYt6c\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.robbinstbm.com\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2019\/07\/Photo-1.jpg","thumbnail_width":1504,"thumbnail_height":1000,"description":"India\u2019s Sleemanabad Carrier Canal is a prime example of just how challenging mixed face conditions can be, although other examples exist. The water transfer tunnel is being bored using a 10 m diameter hybrid-type rock\/EPB TBM. However, in 6.5 years of tunneling the machine had only advanced 1,600 m. This paper discusses the problems faced and the methodology that enabled good advance rates in highly variable mixed face conditions."}