With the construction and development of higher degree highway, road tunnel project has become an important part of highway construction while the water drainage technique of highway tunnel is one of the most important factors to keep the normal operation of highway tunnel.Although China's construction technique has matured, the operational requirements of the mountainous area could not well met. The paper mainly analyzed the water drainage technique of mountainous area road construction.%随着高等级公路的建设和发展,公路隧道工程已成为公路建设的重要组成部分,而公路隧道的防排水技术是保持公路隧道正常运营的极为重要的因素之一.尽管我国公路隧道的建设技术已经比效成熟,还是不能很好的满足山区公路隧道的运营要求.本文主要针对山区公路隧道防排水施工技术进行分析.
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