Leakage often occurs in the tunnel at cold region during the spring thawing period and results in some tunnel diseases.
寒冷或严寒地区的隧道常在春融期出现渗漏并引发各种冰冻，造成隧道病害。
Leakage often occurs in the tunnel at cold region during the spring thawing period and results in some tunnel diseases.
寒冷或严寒地区的隧道常在春融期出现渗漏并引发各种冰冻，造成隧道病害。
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