胶州湾海底隧道是中国自行建造的第二条海底隧道，其服役寿命为100 a。
Kiaochow Bay subsea tunnel is the second self-building tunnel in China with the designed service life over 100 years.
介绍青岛胶州湾湾口海底隧道的工程概况和国内小间距隧道的研究现状。
The subsea tunnel engineering that lies at Jiaozhou Bay in Qingdao is introduced, as well as the research status of little distance parallel tunnels in China.
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