十天高速公路隧道地質超前預報(TSP)與圍巖分級預測研究
[Abstract]:TSP advanced geological prediction method is the most widely used method in long distance geophysical prospecting at present. It has been used in many tunnels to forecast accurately. At present, there are many engineering examples about TSP prediction, but the literature on it is still rare. As a geophysical method, the multi-solution of the prediction results and the interpretation characteristics of different complex geological conditions need to be analyzed. Therefore, it is very important to carry out the research of TSP exploration and interpretation under different natural and geological conditions, and to accumulate the data in this field, which is very important to improve the accuracy of TSP detection and interpretation. First of all, on the basis of summarizing the basic principle of TSP exploration and collecting the case documents of TSP advanced geological prediction, some basic laws and experiences about TSP interpretation are obtained. The characteristics of corresponding exploration results of several common geological bodies are summarized and summarized. This paper forecasts the Xiaochuan Tunnel and Chengzhou Tunnel of Shitian Expressway under two different geological conditions, and interprets and analyzes the characteristics of the forecast result map, and draws a forecast conclusion. Secondly, through the continuous geological description of the face excavation and the reduction of the actual surrounding rock geological condition in the first 100 m of the TSP prediction section, the effect of TSP detection is analyzed, and the corresponding geological characteristics of the exploration result map are studied. The corresponding interpretation rules and experience are obtained. At the same time, the differences between TSP and GPR prediction are analyzed, and the detection characteristics and applicability of TSP203 are discussed. Finally, the classification prediction index of surrounding rock is selected by TSP203 detection feature, and the index is selected according to the detection result. The weight of the index is calculated by AHP and expert investigation method, and the grade of surrounding rock is forecasted by fuzzy comprehensive evaluation. Combined with actual excavation, the classification of surrounding rock by BQ method is carried out, and the results of FAHP-TSP method are compared to verify its accuracy.
【學位授予單位】:長安大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:U459.2;U451.2
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