陕西秦岭终南山特长隧道位于我国西部大通道—内蒙古阿荣旗至广西北海和银川至武汉的公用段 ,在终南山的青岔 (长安县境内 )至营盘 (水县境内 )之间穿越秦岭。隧道单洞全长 1 8 0 2km ,居亚洲和中国首位 ,世界第二位。隧道的技术标准为高速公路双洞 4车道 ,计算行车时速为 80 Qinling Zhongnanshan Special Tunnel in Shaanxi Province is located in the common channel from the Arong Banner in Inner Mongolia to Beihai in Guangxi and the Yinchuan to Wuhan in the western part of China. It crosses Qinling between Qingcha in Chang Nanshan (Chang’an County) and Yingpan (in Huangshui County). The tunnel has a total length of 1820km, ranking first in Asia and China and second in the world. Tunnel technical standards for the highway double hole 4 lanes, calculate the driving speed of 80