The characteristics and reasons of leakage in tunnels are analyzed through investigating the leakage conditions in a multi-arched tunnel of jinliwen expressway.

• 摘要目前，我国公路随道普遍存在渗漏现象，寒区随道还会由渗漏进一步引发冻害，它们严重影响了公路随道的正常运营。