{"id":4352,"date":"2023-10-23T06:34:30","date_gmt":"2023-10-23T06:34:30","guid":{"rendered":"https:\/\/jammubulletin.com\/site\/?p=4352"},"modified":"2023-10-23T06:34:30","modified_gmt":"2023-10-23T06:34:30","slug":"engineers-develop-new-tunnel-method-for-kashmir-rail-link-project","status":"publish","type":"post","link":"https:\/\/jammubulletin.com\/site\/engineers-develop-new-tunnel-method-for-kashmir-rail-link-project\/","title":{"rendered":"Engineers develop new tunnel method for Kashmir rail link project"},"content":{"rendered":"

NEW DELHI: Indian\u00a0<\/span>Railways\u00a0<\/span><\/span><\/a>experts\u00a0<\/span><\/span>have\u00a0<\/span>devised\u00a0<\/span><\/span>a\u00a0<\/span>novel\u00a0<\/span><\/span>tunnelling\u00a0<\/span><\/span>technique\u00a0<\/span><\/span>to\u00a0<\/span>finish\u00a0<\/span><\/span>Tunnel-1,\u00a0<\/span><\/span>the\u00a0<\/span><\/span>111-kilometer\u00a0<\/span><\/span>Katra<\/a>–Banihal<\/a>\u00a0<\/span><\/span>segment\u00a0<\/span><\/span>of\u00a0<\/span>the\u00a0<\/span><\/span>Kashmir<\/a>\u00a0<\/span><\/span>rail\u00a0<\/span><\/span>link\u00a0<\/span><\/span>project,\u00a0<\/span><\/span>despite\u00a0<\/span><\/span>the\u00a0<\/span>challenging\u00a0<\/span>terrain\u00a0<\/span><\/span>of\u00a0<\/span><\/span>the\u00a0<\/span>Himalayas<\/a>.<\/span><\/span><\/span> <\/span><\/span><\/span>The\u00a0<\/span><\/span>Udhampur<\/a>-Srinagar-Baramulla\u00a0<\/a><\/span><\/span>Rail\u00a0<\/span><\/span>Link\u00a0<\/span><\/span>Project’s\u00a0<\/span><\/span>Katra-Reasi\u00a0<\/span><\/span>portion\u00a0<\/span><\/span>features\u00a0<\/span><\/span>a\u00a0<\/span><\/span>3.2-km\u00a0<\/span><\/span>single\u00a0<\/span><\/span>tube\u00a0<\/span><\/span>tunnel\u00a0<\/span><\/span>at\u00a0<\/span><\/span>the\u00a0<\/span>base\u00a0<\/span><\/span>of\u00a0<\/span>the\u00a0<\/span><\/span>Trikuta\u00a0<\/span><\/span>Hills,\u00a0<\/span><\/span>which\u00a0<\/span><\/span>has\u00a0<\/span>been\u00a0<\/span><\/span>dubbed\u00a0<\/span><\/span>the\u00a0<\/span>most\u00a0<\/span><\/span>challenging\u00a0<\/span><\/span>part\u00a0<\/span>of\u00a0<\/span><\/span>the\u00a0<\/span>project.<\/span><\/span><\/span> <\/span><\/span><\/span>Railway\u00a0<\/span><\/span>Minister\u00a0<\/span><\/span>Ashwini\u00a0<\/span><\/span>Vaishnaw\u00a0<\/span><\/span>has\u00a0<\/span><\/span>recently\u00a0<\/span><\/span>declared,\u00a0<\/span><\/span>“We\u00a0<\/span><\/span>have\u00a0<\/span><\/span>innovatively\u00a0<\/span><\/span>developed\u00a0<\/span><\/span>(I)-TM\u00a0<\/span><\/span>as\u00a0<\/span><\/span>Himalayan\u00a0<\/span><\/span>tunnelling\u00a0<\/span><\/span>method\u00a0<\/span>for\u00a0<\/span><\/span>tunnelling\u00a0<\/span><\/span>through\u00a0<\/span>the\u00a0<\/span><\/span>Himalayan\u00a0<\/span><\/span>geology\u00a0<\/span><\/span>to\u00a0<\/span>build\u00a0<\/span><\/span>tunnels\u00a0<\/span><\/span>in\u00a0<\/span><\/span>Jammu\u00a0<\/span><\/span>and\u00a0<\/span><\/span>Kashmir.”<\/span><\/span><\/span> <\/span><\/span><\/span>A\u00a0<\/span>senior\u00a0<\/span><\/span>railway\u00a0<\/span><\/span>engineer\u00a0<\/span><\/span>described\u00a0<\/span><\/span>the\u00a0<\/span>new\u00a0<\/span><\/span>tunnelling\u00a0<\/span><\/span>technique,\u00a0<\/span><\/span>stating\u00a0<\/span><\/span>that\u00a0<\/span>it\u00a0<\/span><\/span>entailed\u00a0<\/span><\/span>pre-excavation\u00a0<\/span><\/span>support\u00a0<\/span>measures\u00a0<\/span><\/span>to\u00a0<\/span>address\u00a0<\/span><\/span>the\u00a0<\/span><\/span>“flowing\u00a0<\/span><\/span>conditions”\u00a0<\/span><\/span>observed\u00a0<\/span><\/span>during\u00a0<\/span><\/span>tunnel\u00a0<\/span><\/span>excavation.<\/span><\/span><\/span><\/span><\/span><\/span>The\u00a0<\/span>railroads\u00a0<\/span><\/span>also\u00a0<\/span><\/span>rerouted\u00a0<\/span><\/span>the\u00a0<\/span>train\u00a0<\/span>line\u00a0<\/span><\/span>so\u00a0<\/span>that\u00a0<\/span><\/span>only\u00a0<\/span><\/span>a\u00a0<\/span>tiny\u00a0<\/span>section\u00a0<\/span><\/span>travels\u00a0<\/span><\/span>through\u00a0<\/span><\/span>the\u00a0<\/span>challenging\u00a0<\/span><\/span>terrain\u2014which\u00a0<\/span><\/span>the\u00a0<\/span>engineers\u00a0<\/span><\/span>had\u00a0<\/span>declared\u00a0<\/span><\/span>to\u00a0<\/span>be\u00a0<\/span><\/span>the\u00a0<\/span>worst\u00a0<\/span><\/span>they\u00a0<\/span><\/span>had\u00a0<\/span>ever\u00a0<\/span><\/span>encountered\u2014when\u00a0<\/span><\/span>constructing\u00a0<\/span><\/span>tunnels\u00a0<\/span><\/span>in\u00a0<\/span><\/span>the\u00a0<\/span>nation.<\/span><\/span><\/span> <\/span><\/span><\/span>A\u00a0<\/span>senior\u00a0<\/span><\/span>railway\u00a0<\/span><\/span>engineer\u00a0<\/span><\/span>participating\u00a0<\/span>in\u00a0<\/span><\/span>the\u00a0<\/span>project’s\u00a0<\/span>development\u00a0<\/span><\/span>stated,\u00a0<\/span><\/span>“We\u00a0<\/span><\/span>inserted\u00a0<\/span><\/span>nine-meter\u00a0<\/span><\/span>pipes\u00a0<\/span><\/span>in\u00a0<\/span><\/span>the\u00a0<\/span>mountains.\u00a0<\/span><\/span>The\u00a0<\/span>engineers\u00a0<\/span><\/span>decided\u00a0<\/span><\/span>to\u00a0<\/span>provide\u00a0<\/span><\/span>rigid\u00a0<\/span><\/span>supports\u00a0<\/span>using\u00a0<\/span><\/span>‘ISHB’\u00a0<\/span><\/span>as\u00a0<\/span>opposed\u00a0<\/span><\/span>to\u00a0<\/span>the\u00a0<\/span><\/span>lattice\u00a0<\/span><\/span>girder\u00a0<\/span><\/span>method\u00a0<\/span><\/span>used\u00a0<\/span>in\u00a0<\/span><\/span>the\u00a0<\/span>New\u00a0<\/span><\/span>Austrian\u00a0<\/span><\/span>Tunnelling\u00a0<\/span><\/span>Method.”<\/span><\/span><\/span> <\/span><\/span><\/span>We\u00a0<\/span><\/span>refer\u00a0<\/span>to\u00a0<\/span><\/span>it\u00a0<\/span>as\u00a0<\/span><\/span>pipe\u00a0<\/span><\/span>roofing.<\/span><\/span><\/span> <\/span><\/span><\/span>We\u00a0<\/span><\/span>used\u00a0<\/span><\/span>these\u00a0<\/span><\/span>perforated\u00a0<\/span><\/span>poles\u00a0<\/span><\/span>and\u00a0<\/span><\/span>filled\u00a0<\/span><\/span>them\u00a0<\/span>with\u00a0<\/span><\/span>PU\u00a0<\/span><\/span>grout\u00a0<\/span><\/span>to\u00a0<\/span>create\u00a0<\/span><\/span>an\u00a0<\/span>umbrella.<\/span><\/span><\/span> <\/span><\/span><\/span>This\u00a0<\/span>substance\u00a0<\/span><\/span>reacts\u00a0<\/span><\/span>with\u00a0<\/span><\/span>the\u00a0<\/span>soil\u00a0<\/span><\/span>to\u00a0<\/span>triple\u00a0<\/span><\/span>its\u00a0<\/span>volume\u00a0<\/span><\/span>and\u00a0<\/span><\/span>turn\u00a0<\/span><\/span>it\u00a0<\/span><\/span>into\u00a0<\/span>a\u00a0<\/span><\/span>rock-like\u00a0<\/span><\/span>substance.<\/span><\/span><\/span> <\/span><\/span><\/span>The\u00a0<\/span>stability\u00a0<\/span><\/span>of\u00a0<\/span><\/span>this\u00a0<\/span>structure\u00a0<\/span><\/span>is\u00a0<\/span>checked,\u00a0<\/span><\/span>and\u00a0<\/span>then\u00a0<\/span><\/span>we\u00a0<\/span><\/span>gradually\u00a0<\/span><\/span>start\u00a0<\/span><\/span>excavating,”\u00a0<\/span><\/span>the\u00a0<\/span>engineer\u00a0<\/span><\/span>stated.<\/span><\/span><\/span> <\/span><\/span><\/span>In\u00a0<\/span>order\u00a0<\/span><\/span>to\u00a0<\/span>let\u00a0<\/span><\/span>the\u00a0<\/span>stratum\u00a0<\/span><\/span>relax\u00a0<\/span><\/span>and\u00a0<\/span><\/span>shed\u00a0<\/span><\/span>water,\u00a0<\/span><\/span>he\u00a0<\/span><\/span>added\u00a0<\/span><\/span>the\u00a0<\/span>engineers\u00a0<\/span><\/span>also\u00a0<\/span>included\u00a0<\/span><\/span>stress\u00a0<\/span>release\u00a0<\/span><\/span>holes\u00a0<\/span><\/span>and\u00a0<\/span><\/span>wing\u00a0<\/span><\/span>drainage\u00a0<\/span>holes.<\/span><\/span><\/span> <\/span><\/span><\/span>The\u00a0<\/span><\/span>challenging\u00a0<\/span>terrain\u00a0<\/span><\/span>has\u00a0<\/span>caused\u00a0<\/span><\/span>the\u00a0<\/span>work\u00a0<\/span><\/span>to\u00a0<\/span>progress\u00a0<\/span><\/span>more\u00a0<\/span>slowly.<\/span><\/span><\/span> <\/span><\/span><\/span>If\u00a0<\/span><\/span>these\u00a0<\/span>circumstances\u00a0<\/span><\/span>had\u00a0<\/span>arisen\u00a0<\/span><\/span>in\u00a0<\/span><\/span>any\u00a0<\/span>other\u00a0<\/span>nation,\u00a0<\/span><\/span>they\u00a0<\/span><\/span>would\u00a0<\/span>have\u00a0<\/span><\/span>left\u00a0<\/span><\/span>the\u00a0<\/span>location.<\/span><\/span><\/span> <\/span><\/span><\/span>However,\u00a0<\/span>we\u00a0<\/span><\/span>made\u00a0<\/span><\/span>the\u00a0<\/span>decision\u00a0<\/span><\/span>to\u00a0<\/span>proceed\u00a0<\/span><\/span>and\u00a0<\/span>use\u00a0<\/span><\/span>a\u00a0<\/span>novel\u00a0<\/span><\/span>tunnelling\u00a0<\/span><\/span>technique,”\u00a0<\/span><\/span>he\u00a0<\/span><\/span>remarked.<\/span><\/span><\/span> <\/span><\/span><\/span>After\u00a0<\/span><\/span>being\u00a0<\/span>delayed\u00a0<\/span><\/span>for\u00a0<\/span><\/span>more\u00a0<\/span>than\u00a0<\/span>three\u00a0<\/span>years\u00a0<\/span><\/span>starting\u00a0<\/span><\/span>in\u00a0<\/span><\/span>2017,\u00a0<\/span><\/span>engineers\u00a0<\/span><\/span>now\u00a0<\/span><\/span>intend\u00a0<\/span><\/span>to\u00a0<\/span>finish\u00a0<\/span><\/span>this\u00a0<\/span>important\u00a0<\/span><\/span>tunnel\u00a0<\/span><\/span>by\u00a0<\/span><\/span>the\u00a0<\/span>beginning\u00a0<\/span><\/span>of\u00a0<\/span><\/span>next\u00a0<\/span>year.<\/span><\/span><\/span> <\/span><\/span><\/span>The\u00a0<\/span><\/span>Katra-Banihal\u00a0<\/span><\/span>stretch\u00a0<\/span><\/span>is\u00a0<\/span><\/span>111\u00a0<\/span><\/span>km\u00a0<\/span><\/span>long\u00a0<\/span>and\u00a0<\/span><\/span>mostly\u00a0<\/span><\/span>consists\u00a0<\/span>of\u00a0<\/span><\/span>tunnels.<\/span><\/span><\/span> <\/span><\/span><\/span>There\u00a0<\/span>are\u00a0<\/span><\/span>eight\u00a0<\/span><\/span>escape\u00a0<\/span><\/span>tunnels\u00a0<\/span><\/span>(67\u00a0<\/span><\/span>km)\u00a0<\/span><\/span>in\u00a0<\/span>addition\u00a0<\/span><\/span>to\u00a0<\/span>the\u00a0<\/span><\/span>27\u00a0<\/span><\/span>main\u00a0<\/span><\/span>tunnels\u00a0<\/span><\/span>(97\u00a0<\/span><\/span>km).<\/span><\/span><\/span> <\/span><\/span><\/span>There\u00a0<\/span>are\u00a0<\/span><\/span>37\u00a0<\/span><\/span>bridges\u00a0<\/span><\/span>in\u00a0<\/span><\/span>this\u00a0<\/span>segment,\u00a0<\/span><\/span>26\u00a0<\/span><\/span>major\u00a0<\/span><\/span>and\u00a0<\/span><\/span>11\u00a0<\/span><\/span>minor.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

\"Engineers
Engineers develop new tunnel method for Kashmir rail link project<\/figcaption><\/figure>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

NEW DELHI: Indian\u00a0Railways\u00a0experts\u00a0have\u00a0devised\u00a0a\u00a0novel\u00a0tunnelling\u00a0technique\u00a0to\u00a0finish\u00a0Tunnel-1,\u00a0the\u00a0111-kilometer\u00a0Katra–Banihal\u00a0segment\u00a0of\u00a0the\u00a0Kashmir\u00a0rail\u00a0link\u00a0project,\u00a0despite\u00a0the\u00a0challenging\u00a0terrain\u00a0of\u00a0the\u00a0Himalayas. The\u00a0Udhampur-Srinagar-Baramulla\u00a0Rail\u00a0Link\u00a0Project’s\u00a0Katra-Reasi\u00a0portion\u00a0features\u00a0a\u00a03.2-km\u00a0single\u00a0tube\u00a0tunnel\u00a0at\u00a0the\u00a0base\u00a0of\u00a0the\u00a0Trikuta\u00a0Hills,\u00a0which\u00a0has\u00a0been\u00a0dubbed\u00a0the\u00a0most\u00a0challenging\u00a0part\u00a0of\u00a0the\u00a0project. Railway\u00a0Minister\u00a0Ashwini\u00a0Vaishnaw\u00a0has\u00a0recently\u00a0declared,\u00a0“We\u00a0have\u00a0innovatively\u00a0developed\u00a0(I)-TM\u00a0as\u00a0Himalayan\u00a0tunnelling\u00a0method\u00a0for\u00a0tunnelling\u00a0through\u00a0the\u00a0Himalayan\u00a0geology\u00a0to\u00a0build\u00a0tunnels\u00a0in\u00a0Jammu\u00a0and\u00a0Kashmir.” A\u00a0senior\u00a0railway\u00a0engineer\u00a0described\u00a0the\u00a0new\u00a0tunnelling\u00a0technique,\u00a0stating\u00a0that\u00a0it\u00a0entailed\u00a0pre-excavation\u00a0support\u00a0measures\u00a0to\u00a0address\u00a0the\u00a0“flowing\u00a0conditions”\u00a0observed\u00a0during\u00a0tunnel\u00a0excavation.The\u00a0railroads\u00a0also\u00a0rerouted\u00a0the\u00a0train\u00a0line\u00a0so\u00a0that\u00a0only\u00a0a\u00a0tiny\u00a0section\u00a0travels\u00a0through\u00a0the\u00a0challenging\u00a0terrain\u2014which\u00a0the\u00a0engineers\u00a0had\u00a0declared\u00a0to\u00a0be\u00a0the\u00a0worst\u00a0they\u00a0had\u00a0ever\u00a0encountered\u2014when\u00a0constructing\u00a0tunnels\u00a0in\u00a0the\u00a0nation. A\u00a0senior\u00a0railway\u00a0engineer\u00a0participating\u00a0in\u00a0the\u00a0project’s\u00a0development\u00a0stated,\u00a0“We\u00a0inserted\u00a0nine-meter\u00a0pipes\u00a0in\u00a0the\u00a0mountains.\u00a0The\u00a0engineers\u00a0decided\u00a0to\u00a0provide\u00a0rigid\u00a0supports\u00a0using\u00a0‘ISHB’\u00a0as\u00a0opposed\u00a0to\u00a0the\u00a0lattice\u00a0girder\u00a0method\u00a0used\u00a0in\u00a0the\u00a0New\u00a0Austrian\u00a0Tunnelling\u00a0Method.” We\u00a0refer\u00a0to\u00a0it\u00a0as\u00a0pipe\u00a0roofing. We\u00a0used\u00a0these\u00a0perforated\u00a0poles\u00a0and\u00a0filled\u00a0them\u00a0with\u00a0PU\u00a0grout\u00a0to\u00a0create\u00a0an\u00a0umbrella. This\u00a0substance\u00a0reacts\u00a0with\u00a0the\u00a0soil\u00a0to\u00a0triple\u00a0its\u00a0volume\u00a0and\u00a0turn\u00a0it\u00a0into\u00a0a\u00a0rock-like\u00a0substance. The\u00a0stability\u00a0of\u00a0this\u00a0structure\u00a0is\u00a0checked,\u00a0and\u00a0then\u00a0we\u00a0gradually\u00a0start\u00a0excavating,”\u00a0the\u00a0engineer\u00a0stated. In\u00a0order\u00a0to\u00a0let\u00a0the\u00a0stratum\u00a0relax\u00a0and\u00a0shed\u00a0water,\u00a0he\u00a0added\u00a0the\u00a0engineers\u00a0also\u00a0included\u00a0stress\u00a0release\u00a0holes\u00a0and\u00a0wing\u00a0drainage\u00a0holes. The\u00a0challenging\u00a0terrain\u00a0has\u00a0caused\u00a0the\u00a0work\u00a0to\u00a0progress\u00a0more\u00a0slowly. If\u00a0these\u00a0circumstances\u00a0had\u00a0arisen\u00a0in\u00a0any\u00a0other\u00a0nation,\u00a0they\u00a0would\u00a0have\u00a0left\u00a0the\u00a0location. However,\u00a0we\u00a0made\u00a0the\u00a0decision\u00a0to\u00a0proceed\u00a0and\u00a0use\u00a0a\u00a0novel\u00a0tunnelling\u00a0technique,”\u00a0he\u00a0remarked. After\u00a0being\u00a0delayed\u00a0for\u00a0more\u00a0than\u00a0three\u00a0years\u00a0starting\u00a0in\u00a02017,\u00a0engineers\u00a0now\u00a0intend\u00a0to\u00a0finish\u00a0this\u00a0important\u00a0tunnel\u00a0by\u00a0the\u00a0beginning\u00a0of\u00a0next\u00a0year. The\u00a0Katra-Banihal\u00a0stretch\u00a0is\u00a0111\u00a0km\u00a0long\u00a0and\u00a0mostly\u00a0consists\u00a0of\u00a0tunnels. There\u00a0are\u00a0eight\u00a0escape\u00a0tunnels\u00a0(67\u00a0km)\u00a0in\u00a0addition\u00a0to\u00a0the\u00a027\u00a0main\u00a0tunnels\u00a0(97\u00a0km). There\u00a0are\u00a037\u00a0bridges\u00a0in\u00a0this\u00a0segment,\u00a026\u00a0major\u00a0and\u00a011\u00a0minor.  <\/p>\n","protected":false},"author":2,"featured_media":4353,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[13,67,15,89,54],"tags":[],"class_list":["post-4352","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-breaking-news","category-header","category-jammu-and-kashmir","category-national","category-political"],"gutentor_comment":0,"yoast_head":"\nEngineers develop new tunnel method for Kashmir rail link project<\/title>\n<meta name=\"description\" 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