十天高速公路隧道地质超前预报（TSP）与围岩分级预测研究

发布时间：2018-11-29 11:08

【摘要】：TSP超前地质预报方法是目前长距离物探预报中运用最为广泛的一种方法，在不少隧道中进行了比较准确的预报。目前，关于TSP预报的工程实例运用较多，但真正对其进行深入研究的文献还是比较少见。作为一种物探方法其预报结果的多解性和不同复杂地质情况的解译特征有待分析。所以，开展不同自然环境和地质条件下的TSP探测和解译研究，不断的积累该方面的资料，对于提高TSP探测的精度和解译的准确性具有十分重要的意义。首先，在总结TSP探测基本原理和搜集TSP超前地质预报实例文献的基础上，得出了一些关于TSP解译的基本规律和经验，并对几种常见地质体的对应探测成果图特征规律进行归纳总结。对十天高速公路小川隧道和成州隧道两种不同地质情况条件下进行预报，并对预报成果图特征进行解译分析，得出预报结论。其次，通过对掌子面开挖进行连续地质描述，还原TSP预报段前100m的实际围岩地质情况，以此来对TSP探测效果进行分析，并对其探测成果图对应地质特征进行研究，得出相应的解译规律和经验。同时，对比分析TSP与地质雷达预测存在的差异，以此探讨TSP203的探测特征和适用性。最后，通过TSP203探测特征选取围岩分级预测指标，并根据探测结果对指标进行取值，运用层次分析法和专家调查法计算其权重，，采用模糊综合评判对围岩等级进行预测。结合实际开挖进行BQ法围岩分级，并将FAHP-TSP法分级结果与之对比，验证其准确性。
[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.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U459.2;U451.2

【参考文献】