| This paper rely on advancing geological forecast and monitoring measurement of Enlaienqian highway began research project, on the basis of finishing the area of geological material in this project and tunnel design support scheme. Through the analysis of the area of the engineering geological characteristics and summary of similar projects in the area with experience, all kinds of advance geological forecast its own advantages and disadvantages, choose the best advance geological forecast combination and monitoring measurement solutions to suit our works. Based on the common karst which often meet on the engineering in tunnel construction, building digital model to analyze the construction stage, to find the stress and strain distribution characteristics of the whole construction process in the karst tunnel, to offer reference and guidance for tunnel hazard controlling. This research mainly includes:(1) Finishing the Enlaienqian highway engineering area hydrogeological conditions, statistics and summarize the highway tunnel engineering major adverse geologic types and its preliminary design paragraphs, and introduce the bad geological body of prevention and control measures.(2) Introduction of major advance geological forecast tunnel methods and their respective advantages and disadvantages and sum up the performance index, comprehensive early geological forecast system introduced the concept of integral train of thought, method and necessity. At the same time selecting Huaguoshan tunnel project for an example to introduced. Expounding tunnel monitoring measurement solutions and the main aspects which need attention and summarizing data collection and management methods.(3) Adopting MIDAS/GTS, and selecting the representative karst tunnel profile simulated, calculating construction process of top of the tunnel karst cave and no. Comparing the deformation condition karst have filler cases using conventional support form and strengthen the tunnel support form of deformation conditions. Finding out the influence degree of the karst tunnel and the way. Analysis of deformation characteristics and summary of the need for attention to local construction. Evaluating the reliability of processing mode of tunnel karst.(4) Summarize and introduces the Enlaienqian highway tunnel advance geological forecast and monitor measuring work., Summarizing the problems in the work. Analysing the monitoring data and summaring the law and causes of deformation to service for the late and similar projects. |
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