The Research On Application Of The Tan Shu Yan Tunnel Advanced Geological Prediction

This article is based on the Yangquan West Central Expressway TanShuYan tunnel based on the project, on the basis of a comprehensive collection of the engineering geological survey and design information of TGP, the GPR detection, combined with its geological survey in order to achieve the following objectives:to further identify the tunnelexcavation engineering geological and hydrogeological conditions of the working face; reduce the probability of occurrence and degree of harm of the tunnel geological disasters; to provide the geological basis for optimizing the design and construction of the tunnel project; to provide geological information for the preparation of completion documents, information construction of the tunnel. The paper has important theoretical and application value. In this paper, the results:First, the advantages, disadvantages and applicability of advanced geological prediction method by comparison TGP and geological radar and geological analysis of advanced geological prediction method on the sandalwood tree, rock tunnel Practice has proved thatthis integrated forecasting method is better, is worth advocating and promotion.Second, the the TGP advanced geological prediction accuracy of factors, including the acquisition of the original data accuracy and analysis of solvability factors. Factors affecting the original data, including the excitation and receiving hole layout site layout, such as to stimulate the number of holes, as well as stimulate the empty spacing, blast hole excitation (excitation of water, namely the impact of water), the impact of the pipeline wave. Analysis of factors affecting the process of multiple solutions for which the longitudinal wave velocity and Poisson’s ratio. Study the impact of these factors ahead forecast, and the response to sample in order to improve the accuracy of the original data.Finally, verify the actual situation of the tunnel excavation ahead of forecast accuracy.To improve the accuracy of the advanced prediction through the analysis of the reasons of accuracy, to guide the construction of geological disasters to reduce the tunnel construction process, to avoid the purpose of major safety accidents.