Research on route scheme of disease section in Shagong landslide group in Sichuan-Tibet highway national road 317

Shagong landslide group in national road 317 is the section of north line of Sichuan-Tibet highway where geological disasters are concentrated, scale of disasters are huge, traffic-keeping and maintenance are difficult. Influenced by the rainy season and snowmelt period, traffic interruption occurs several times a year in this section. This article based on original route treatment scheme of Shagong landslide group disease, studied on comparison of valuable route scheme, proposed the bridge and tunnel program completely passing round, in order to thoroughly improve driving condition, enhance highway disaster defending capability, and improve the service quality. It can be provided a reference to similar design on disease treatment engineering.