https://www.trip.com/travel-guide/attraction/tianquan/erlangshan-tunnel-56806268/
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Erlangshan Tunnel

二郎山隧道
󰺂3.7
4.2/5
21 Reviews
Roads/Highways
Recommended sightseeing time:0.5-1 day
Address:
Yakang Expressway, Lianglu Township, Tianquan County, Ya'an CityMap
What travelers say:

Erlangshan Tunnel is located in Luding County, Ganzi Prefecture, Sichuan Province, Bridge No. 3 Longdanxi, east, dry Haizi Mountain, which crosses Erlang Mountain, west to Betuo Tunnel, with a total length of 4176 meters and a depth of 748 meters. The two-way two-car shows the third-level road, with an altitude of 2,200 meters. The investment of 5.4 billion yuan began construction in 1996 and opened to traffic in 2001. At that time, it was the longest, deepest buried, highest altitude, maximum ground stress and longest construction period of special mountain road tunnel. The tunnel is constructed using the new Austrian method and composite lining, overcoming rock explosion, large deformation, collapse slope accumulation, dark river, karst lot, and won the "Fourth Zhan Tianyou Civil Engineering Award" and the "Luban Award" of the National Building Quality Engineering in 2004.

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