| Long-big mountain tunnel construction is the key and difficult project in railway and highway Engineering, and it can even be the Control project in some lines. Considerating the domestic situation, the "Eleventh Five-Year" is a period of rapid economic development and so it will be in the "Twelve Five-Year" period, GDP maintaining a high growth speed, and it is also a period of quickly developing infrastructure. ESpecial when the global financial crisis broke out in 2008, Central Government proposed a 4 trillion infrastructure investment plan, the large-scale infrastructure brought a large number of long-big mountain tunnel construction, while the construction methods of long-big mountain tunnel in our country are mainly new austrian tunnelling method and information construction.Currently, the study of information construction and NATM is mostly focusing on the general tunnel, or aiming at complex geological conditions and special treatment construction. Although these problems are inevitable in the constructions of long-big mountain tunnels, considerating the long-big mountain tunnel construction's specific features which are great length large, large section and global issues in the overall construction, they also deserve further study. So in order to solve this problem, this paper creatively associate the actual situation in the theory, relying on Maozhanling expressway tunnel, carrying out a detailed analysis of the tunnel inside the cave, revealing the ground by tunnel face excavation, and these have some guidance significances for the latter part of the construction.In the study of long-big mountain tunnel's information construction, measured datum are usually used as breakthroughs, the early datum are processed by the SPSS statistical software to forecast the results, and then use mathematical boolean map method to compare the processed datum with the latter part measured datum in the actual construction, and thus we can put forward the ideas that the early information construction have the most direct significance to the post-construction, and the practical application of information construction in long-big mountain tunnel, especially in the post-construction, can moderately reduce the number of monitoring sections to reduce the work intensity in information construction. |
