Research Of Impact Of Rock Defects Behind The Highway Tunnel Lining On The Structural Safety Of Tunnel And The Treatment Strategies

In our country, with the rapid development of the national economy, the tunnel project has been vigorously pushing forward, at the same time, we also see the new problems. Due to geological conditions, terrain conditions, climate conditions and design, construction, operation process of the impact of various factors, many roads surrounding the tunnel lining behind the rise to various types of defects, leading to the tunnel completed, lead to various varying degrees of disease, which has brought to the road transport safety.In order to maintain the structural safety of the tunnel to ensure the smooth flow of roadsafety, the protection of people's lives, property and the steady development of regionaleconomy, this paper combines the use of model test of the method of numerical simulation ofthe tunnel vault and tunnel lining behind the wall behind the existence of empty or broken surrounding rock, the lining of the lateral pressure coefficient X for 1.5,1,0.5 of the stress field, the deformation and production of disease and the characteristics of the process of summing up the law of the tunnel lining damage; In addition, the existence of defects on the treatment of rock, the tunnel lining at different stress field in the deformation, the formation of disease until the full and characteristics of the process of destruction, and to evaluate treatment methods on ultimate bearing capacity of the tunnel effect of the upgrade.In this paper, the results will be fed back to the tunnel construction and management, this tunnel for the future treatment of diseases research and reference from the tunnel to reduce disease hazards, the tunnel operators to improve safety, protect the patency of road transport is an important significance.