Qipanshan No. 1 Tunnel on Fangdong Railway finish with success September 25.
It is of China-Vietnam Interconnection International Corridor railway. 1461 meter two track. Design speed 200 kilometer hour. Rocks grade IV and grade V. Many falling rocks.
http://big5.xinhuanet.com/gate/big5/www.gx.xinhuanet.com/newscenter/2020-09/27/c_1126545585.htm
cover tunnel photo by: Matt Brown from London, England / CC BY
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