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Workers complete 16 km tunnel on Sichuan-Tibet RR
By:chinadaily.com.cn
update:January 19,2018


Jan. 19, 2018 -- Works clean up the Sangzhuling tunnel in Shannan, Tibet autonomous region, Nov 17, 2017. [Photo/Xinhua]

Located in the canyon area of Shannan city in Tibet, the tunnel took 1,125 days and more than 1,200 construction workers to build since work began in December 2014.

During construction, workers had to overcome challenges of high temperatures and strong rock bursts, a spontaneous, violent fracture of rock that can occur in deep mines. With an ambient temperature of 56 C, those on the job couldn’t work for more than two consecutive hours. They also experienced more than 16,000 rock bursts.

According to project manager Zhu Xuren and team eader Li Chuanhai, the construction team took several safety measures, such as accelerating ventilation, setting up an automatic and high-pressure sprinkler system, and placing ice inside the tunnel.

Qiu Weiyi contributed to this story.


 

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