Unite arch tunnel has its own characteristics which include short tunnel, fleet bury depth and bad surrounding rocks arouses landslide easily in construction.
联拱隧道有其自身特点，由于隧道短，埋深浅、围岩差，施工中容易引起塌方。
Unite arch tunnel has its own characteristics which include short tunnel, fleet bury depth and bad surrounding rocks arouses landslide easily in construction.
联拱隧道有其自身特点，由于隧道短，埋深浅、围岩差，施工中容易引起塌方。
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