Construction Of New Austria Tunnel Method & Stability Research Of Surrounding Rock On Ranjiaba Tunnel

In recent years, with the rapid development of the our country superhighway and high grade highway, highway tunnel in our country has already entered the new period of great development, which promotes the new challenge and request to build technology of highway tunnel.This paper relies on Ranjiaba Tunnel, located on expressway which from Dianjiang to Shizhu of Chongqing. Firstly, the design parameters of support and lining structure are checked; the construction plan is elaborated,too.Secondly,this paper elaborates the different construction methods optimization analysis and numerical simulation research of stability; then according to analyzing distortion characteristic and stability monitoring, summarizes surrounding rocks deformation property, and analyses the main influence factors theirs stability; they can get a solid and viable construction project to guide the actual project; Lastly, from the summary analysis, some good conclusions and suggestions of relevant problems are provided. It's certain reference value to the future engineering project.