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Gui-Guang high-speed railway 454 tunnels inspected
Xinhua News Agency reporters give good pictures for Gui-Guang high-speed railway maintenance.
For concentrated rainfall cause water damage with tunnel leakage and slope slippage, tunnels of Gui-Guang high-speed railway control. Until today 454 tunnels control. 132 problems solved.
http://big5.xinhuanet.com/gate/big5/www.gz.xinhuanet.com/2020-09/03/c_1126447885.htm
cover tunnel photo by: Matt Brown from London, England / CC BY
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http://big5.xinhuanet.com/gate/big5/www.gz.xinhuanet.com/2020-09/03/c_1126447885.htm
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