Study On The Structure Safety Of Road Tunnel Going Through Under Giant Landside

With high use of land in recent years, it's impossible to avoid landslide field totally when constructing freeway. The lines often get across landslide field in the form of tunnel when it's not easy to be altered, especially considering the cost of technology and economy. However, just a few research work to be developed now on constructing tunnel at landslide field. So, combination with the Suan Shui Wan road tunnel on Xi Chang (Huang Lian Guan) to Pan Zhi Hua freeway, which is the key project of western region, deploy study on the structure safety of Suan Shui Wan road tunnel which is going through under giant landslide.By 3D numerical simulation analysis of Suan Shui Wan road tunnel with finite difference program, draw the conclusion in process of tunnel construction on the following factors: the variational rule of primarily lining, the characteristic rule of horizontal displacement and stress of landslide, changing regulation of rim displacement, seeing about the mutual variational rule of landslide and tunnel, also analyzing the reasonable construction method,all in the precondition of considering different distance of the vault to the slip surface. With analyzing different distance of the vault to the slip surface, put forward the influence degree of the landslide when constructing tunnel under landslide, gain the reasonable construction method, and put forward the safety distance of the tunnel construction going through under the giant landslide. On the other hand, by analyzing the 3D spatial effect in process of tunnel construction, gaining the variational rule of primarily lining and rim displacement with...