二郎山隧道建设中的经验与教训

二郎山位于四川省雅安地区天全县与甘孜藏族自治州泸定县交界处，山势险峻，气候恶劣，地质复杂，常年受暴雨、浓雾、积雪、冰冻、大风、严寒等灾害性气候和崩塌、飞石、泥石流等自然灾害的威胁，同时道路标准低，路况极差，堵车严重，翻车事故时有发生，严重影响交通与行车安全。 文章论述了川藏线二郎山段病害治理的方案研究与路线方案比较，阐述了采用修建隧道方案的理由和隧道位置的方案选择；隧道施工的经过以及在施工过程中出现的问题；深刻分析了隧道工程与连接线工程，重点工程与一般工程的辩证关系，总结了工程建设中的经验与教训。

Experiences and Lessons From the Construction of Erlang Shan Tunnel

Erlangshan Mountain lies at the contiguous area of Tianquan county,Ya'an Prefecture,Sichuan Province and Luding County,Ganzi Zang Autonomous State.The Erlangshan mountainous area with complicated geology and dangerously steep mountains is characterized by harsh weather such as storm,heavy fog,snow,ice,strong wind and various frequently occuring natural disasters,such as landslide,rock falling and debris flow,and therefore the highway in this area is low in standard and poor in condition,resulting in serious traffic jam and frequent accidents,which threaten the safety of traffic.This paper describes the scheme study of disease countermeasures on the Erlangshan section of Sichuan-Tibet Highway and the project comparison of line alternatives,and presents the reasons of building a tunnel in the area,the tunnel alignment and the problems occurred in the construction.The dialectical relationships between a tunnel and its linking works,between a key project and an ordinary project are profoundly analyzed and the related experinences and lessons are also summarized,which will enlighten both the organizers and the designers on the construction of a project.