The Xiangnen No 4 Tunnel on the China-Laos railway was drilled through on April 22. It is being constructed by Sinohydro Bureau 3 Co, a subsidiary of POWERCHINA.
With a length of 1,700 meters and a maximum buried depth of about 185m, the tunnel is located in Luang Prabang province in Laos.
The tunnel was originally a construction task for the subcontractor designated by the Laos government. On Aug 23, 2019, the designated subcontractor left the site with 1,171m left.
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The POWERCHINA-built Xiangnen No 4 Tunnel of China-Laos railway is drilled through on April 22. [Photo/POWERCHINA] |
After the work handover, Sinohydro Bureau 3 Co overcame difficulties such as the narrow construction site, tight construction period, poor surrounding rock, and reverse slope drainage.
It also implemented strict prevention and control measures after the outbreak of the COVID-19 epidemic, to ensure employees' health and safety and the project's smooth progress.
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POWERCHINA employees celebrate the drilling through of the Xiangnen No 4 Tunnel of China-Laos railway. [Photo/POWERCHINA] |
The drilling through of the tunnel greatly encouraged the morale of the participating employees, and once again demonstrated the corporate spirit of POWERCHINA's continuous self-improvement, laying a solid foundation for the smooth opening of the China-Laos Railway.
The China-Laos railway, linking Kunming in Southwest China's Yunnan province with Laos' capital city Vientiane, is the first overseas railway project that is primarily invested in, constructed, and operated by China and linked to the Chinese railway network, since the launch of the Belt and Road Initiative.
