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據新華社電 3月26日，在汕頭灣海底68米深處，伴隨著直徑14.57米的“永平號”盾構機刀盤破岩而出，世界首條時速350公里單洞雙線高鐵隧道——汕頭灣海底隧道成功貫通，標誌著連接汕頭與汕尾的“黃金通道”取得突破性進展，創造了國內外海底隧道建設多項紀錄。

The Shantou Bay Submarine Tunnel, which was constructed by the 14th Bureau of China Railway, has a total length of 5 meters and a maximum depth of 0.0 meters from the sea surface.

A series of innovative technologies have not only made Shantou Bay Submarine Tunnel the "Champion of Compression, Earthquake and Corrosion", but also created a number of deep-sea tunnel construction records - the world's first single-hole double-track high-speed railway submarine tunnel with a speed of 350 kilometers per hour, the world's largest excavated diameter railway submarine tunnel, the railway submarine tunnel with the most active faults in China, and the submarine tunnel with the largest water pressure in China.

In the future, after the Shanshan high-speed railway is completed and opened to traffic, it will form a high-speed rail corridor along the southeast coast of the country with the Guangzhou-Shantou high-speed railway, Zhangshan high-speed railway, Fuxia-Zhangzhou high-speed railway, Wenfu high-speed railway, and Ningbo-Taizhou-Wenzhou high-speed railway, passing through 15 cities in Guangdong, Fujian and Zhejiang provinces, opening up the Guangdong-Hong Kong-Macao Greater Bay Area through the eastern Guangdong and western Haixi economic zones to the Yangtze River Delta, and helping the high-quality development of the country's eastern coastal areas.