智利、阿根廷两国之间急需修建通过安第斯山的隧道,保持全年不间断的运输。原有的公、铁路海拔4000ｍ,冬季因受雪崩、强风影响运输被迫中断。1994年底开始对穿越安第斯山隧道进行可行性研究。选择隧道方案时需要考虑的因素是:阿根廷一侧地质复杂,工程难度大;两国洞口的高?.. Chile, Argentina urgent need to build between the two countries through the Andes tunnel, keep the annual uninterrupted transport. The original public and railway 4000m above sea level in winter due to avalanches, strong wind transport was forced to interrupt. The feasibility study of tunneling through the Andes was started at the end of 1994. The factors that need to be considered when choosing a tunneling program are: the geological complex on the Argentine side and the difficulty of the project;