|
Thesis in construction, Pillar Ridge Jiang, Yu Chen highway tunnel as the basis, combined with the engineering tunnel informational construction of the research projects, for the large-span highway tunnel monitoring measurement technology to analyze the use of theoretical analysis and field observations, such as testing methods , for tunnel monitoring measurement technology, the key findings are as follows: (1) on the basis of access to a large number of domestic and foreign literature, combined hope ridge Jiang tunnel project practice, detailed monitoring measurement section points arrangement of the method of measurement data acquisition methods, tunnel monitoring measurement technology in-depth discussion. (2) The combination of tunnel construction monitoring measurement process and data taken in the past, tunnel detection approach, comparative analysis of measurement information processing techniques and analysis methods, in-depth discussion of the advantages and disadvantages of the various methods and applicable conditions. (3) commonly used in the regression analysis function available as follows: logarithmic functions, exponential functions, hyperbolic functions. For a cross-section of the displacement - time curve, a regression curve of the three functions are not necessarily suitable regression analysis for the three functions, the response of the displacement - time curve, select the absolute value of the correlation coefficient maximum regression curve as The cross-section displacement - time curve trend line. (4) gray analysis to predict changes in the surrounding rock displacement in the next period of time. In practice, according to three basic regression function to gray analysis of monitoring and measuring data, correlation coefficient, select the appropriate prediction curve. And by the predicted curve to predict the total amount of displacement, as well as the trend of the surrounding rock displacement of surrounding rock in the next few days, and then determine the stability of the surrounding rock, to determine whether the initial support of the surrounding rock deformation of surrounding rock constraint. (5) Wang Lung-river tunnel engineering practice examples, systematic exposition of the the monitoring measurement information analysis and its role in guiding the construction surrounding convergence by sinking on vault, and the surrounding rock by force, early sprayed concrete internal stress analysis of information, focusing on the analysis of the measurement results for the correction support parameters and support form the tunnel construction is always in reasonable under the dynamic management of science, in order to achieve security , economy and efficiency of purpose. Practice has proved that the monitoring information in a timely manner after the analysis and processing technology improvement measures adopted by the smooth construction of the project an important assurance measures.
|