我院隧道设计始于80年代初期，随着高等级公路的迅速发?#36141;?#21521;山区的延伸，隧道占路线的比例越来越多。长期重视隧道新技术、新工艺、新材料的推广应用，隧道设计理念不断创新，在长大隧道、连拱隧道、小净距隧道和扩建隧道设计技术方面取?#23186;?#22823;突破。 The Institute began tunnel design in early 1980s. With the rapid development of high-grade highway and extension to the mountains, the proportion of tunnels in highway lines is increasing. We have long been paying attention to the promotion and application of the tunnel new technologies. new processes and new materials. keeping continuous innovation in the tunnel design philosophy, and have achieved significant breakthroughs in the design of long and large tunnels, arched tunnels, small spacing tunnels and expanded tunnels.