A Technical Study Of Informational Construetion On Three-Lane Highway Tunnel

With the constant development of China's transportation construction, highway tunnel option in the mountains and hilly areas in highway construction has been taken more and more seriously. Different length, different types of mountain tunnel appeared in large numbers. However, in many tunnel projects, construction of the tunnel encountered a growing number of poor geological problems. We need the help of information technology to guide the tunnel construction. We should found the geological changes in front of the tunnel timely, monitor the dynamic changes of surrounding rock during tunnel excavation, and get all kinds of information that would reflect the stability of the whole tunnel rock, and timely analysis, processing and feedback. Only in this way, the safety of tunnel construction can be guaranteed.By right of mao zhan ling tunnel engineering of jinagzhao highway, this thesis takes geological prediction and design&implementation of construction measurement as its basis, study the use of information construction in highway tunnel construction. The main results are as follows:1) By the use of GPR radar, we make short-range advanced prediction. In this research, the quantities of data are collected from the in-situ advanced prediction. This issue shows how to make advanced prediction, taking the fracture zone, litho-logy interfaces, zone of rich water for example, which can provide credible gist, when similar geologic disaster will happen in the future.2) By the use of TSP System, we make long-range advanced prediction, and divide the types of surrounding rock. The contrast between forecast results and the real geological condition after excavation proved the forecast effect which shows TSP System is suit for tunnel forecast.3) Monitor and Measurement is mainly to collect the dynamic information of surrounding rock in the tunnel construction, including displacement and Stress information. Basis on these information, we could determine whether rock-support system is in steady state, and whether support parameters and construction methods is reasonable. By means of FEM, we finish the numerical simulation of tunnel excavation and support, and analysis the characteristics of force and deformation.This paper make full use of all kinds of information in the construction process, control and adjust the design Construction dynamically, so ensure the construction quality and safety.