The 41 men have been stranded inside a 2km stretch since November 12, when a portion of the 4.5km Silkyara-Barkot tunnel on the National Highway in Uttarkashi district collapsed. Since then, there have been multiple attempts to engineer methods to evacuate the workers, including the use of an American auger machine to drill through close to 60 metres of debris from the Silkyara end.
Last Friday, drilling was halted with only 22 metres of the process completed, after efforts were stymied because of the damage to the bearings on the machine after it hit rock formations, and fears about a collapse in the tunnel.
But even as multiple experts were called in and four other avenues from where drilling could begin were identified, after technical modifications over the past five days, the auger machine from the Silkyara end restarted operations late on Tuesday night, and steadily made progress through Wednesday. By 4am, officials announced that it had navigated a distance of 33 metres. At 11.30am, there was more encouragement, with it reaching 39 metres. And by Wednesday evening, officials announced that a successful end may be near, with 45 metres completed.
この記事は Hindustan Times の November 23, 2023 版に掲載されています。
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この記事は Hindustan Times の November 23, 2023 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
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