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1994年11月8日至11日，由中国公路隧道学会主持的第三届全国公路隧道学术交流大会在重庆召开。交通部公路管理司、四川省交通厅和重庆市的领导出席了会议。来自全国各地的140多名代表和国内外专家交流了研究成果。为了适应国民经济发展，我国高等级公路建设已从平原地区向山岭
From November 8 to November 11, 1994, the 3rd National Highway Tunnel Academic Conference, chaired by China Highway Tunnel Society, was held in Chongqing. Ministry of Transportation Road Administration Division, Sichuan Provincial Communications Department and the leaders of Chongqing attended the meeting. More than 140 delegates from all over China and other domestic and foreign experts exchanged their research results. In order to adapt to the development of the national economy, the construction of high-grade highways in our country has moved from the plains to the mountains