A tunnel has been built for a high-speed railway in Indonesia
The first of two twin tunnels was built on the Jakarta-Bandung high-speed rail in Indonesia. The 1,285-metre tunnel is the third completed tunnel on the railway line after the Valini and Tunnel No 5. The body of the tunnel consists of clay, argillite, and andesite, with 80% of the surrounding geology being V-class rocks. The depth of the tunnel is on average 30 meters.
China Railway Group (CREC) Indonesia, China’s largest contractor, has had to overcome many difficulties in the project, including complex engineering and geological construction conditions at shallow depth, ground displacement, unstable mining pressure.
Following the Covid-19 outbreak, CREC Indonesia’s design department took effective measures to protect its employees from the virus, as well as to create efficient logistics, which laid a solid foundation for the completion of Tunnel 7.
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