巖溶隧道地質(zhì)預(yù)報(bào)的幾種主要方法及應(yīng)用研究
[Abstract]:Objective: China is one of the most widely distributed karst countries in the world. The karst distribution is deep and wide, except for the formation of two karst plateau with Shanxi as the center and Guizhou as the center in the southwest. There is also a wider range of geographical environments. The latest statistics show that the area of carbonate rock exposed to the surface is about 2.03 million km2, plus buried carbonate rock, and the total area of 3.65 million km2, exceeds a third of the total land area of China. The construction practice of karst tunnel in Yi-Wan Railway and Guanjiao Tunnel shows that the construction risk of complex karst tunnel is very high, and the advanced geological forecast is the leading measure to resolve the safety risk of complex karst tunnel construction, but the forecast goal is different. The methods used are obviously different, so it is necessary to study the adaptability method and accuracy of karst geological prediction. The main conclusions are as follows: (1) the comprehensive geological prediction and prediction of complex karst tunnels in Yiwan Railway, Guanjiao Tunnel, Yun-Gui Railway and other projects are investigated in this paper. The time consuming and accuracy of several main methods for predicting karst geology are analyzed. The adaptability and accuracy of several main methods based on karst geological prediction are discussed; (2) the constituent elements of various geological prediction systems according to risk assessment grade are put forward; (3) the research results are used to improve karst geological prediction in the future. The technology and safety construction technology of karst tunnel have reference and practical value.
【作者單位】: 中鐵西南科學(xué)研究院有限公司;
【分類號】:U452.11
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