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13 The Jakarta-Bandung High Speed Train Tunnel Has Finally Passed

Holiday Ayo - A total of 13 tunnels in the Jakarta-Bandung Fast Train (KCJB) project were successfully penetrated. The last tunnel penetrated was tunnel 2 in Jatiluhur, Purwakarta, on Friday, June 17, 2022.

As cited from finance.detik.com, tunnel 2 penetration was marked by a ceremony which was held today, Tuesday (21/6). The ceremony was attended by the Chinese Ambassador to Indonesia Lu Kang and the President Director of PT Kereta Cepat Indonesia China (KCIC) Dwiyana Slamet Riyadi.

Lu Kang said, today is the birthday of President Joko Widodo (Jokowi). He said that the passage of tunnel 2 would be Jokowi's favorite gift.

"Today is President Jokowi's birthday and this should be his favorite gift," he said at the tunnel 2 location.

Meanwhile, Dwiyana explained, tunneling 2 is a formidable challenge in the Jakarta-Bandung high-speed rail project. Jokowi visited tunnel 2 earlier this year.

"Tunnel 2 is one of the toughest obstacles for us. President Jokowi visited on January 17, 2022," he said.

During the construction of this tunnel, Dwiyana explained that a lot of technology transfers took place, including the use of new methods. He gave an example in tunnel 1 for example. In the process of digging tunnel one, a giant Tunnel Boring Machine (TBM) was used with a diameter of 13.23 meters and a length of 102.3 meters.

Dwiyana said that the challenge in penetrating tunnel 2 was related to geological conditions.

"Where nearly 1,050 m of tunnel 2 is, the land is indeed filled with clayshale and extreme clayshale. So if it is excavated it expands and reduces the carrying capacity of the soil by up to 80% so that the potential for collapse of the excavation is very massive here," he said.

Similarly, Dwiyana said that the passage of tunnel 2 was a gift for Jokowi.

"So today coincides with the birthday of Mr. President Jokowi, of course, the Jakarta-Bandung high-speed rail project provides the most beautiful gift for him," he said.

Previously, on April 6, 2022, tunnel 4 in Sukatani District, Purwakarta Regency was also successfully penetrated. Likewise with tunnel 6, the longest in the KCJB area has been successfully penetrated in the same month.

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