Abstract The TRT technology has been more and more widely applied to tunnel geological prediction. However, the result interpretation is always the key and difficult point in geological prediction, since there are a few kinds of interpretation methods and the results are not quite precise. Aiming at the problems in result interpretation of TRT,such as the low combining degree of prediction criteria with actual geological conditions of test area and low prediction accuracy of disaster body′ s development degree and position, some corresponding improvement methods were proposed, namely the actual geological conditions of TRT test section were introduced to GOCAD to create a model and then the TRT 3D data were introduced to the model, realizing the interconnection between TRT test images and actual geological conditions. By adding varieties of color combination in the result image, the TRT result image can reflect both the disaster body and its development degree. A model was established by introducing tunnel coordinates and TRT test data to GOCAD, and the relative position relation between the disaster body and tunnel is understood, the precise prediction of development position and scale of disaster body was realized. Case application shows the improved TRT result interpretation method can greatly increase the accuracy and precision of TRT geological prediction.
Abstract：
The TRT technology has been more and more widely applied to tunnel geological prediction. However, the result interpretation is always the key and difficult point in geological prediction, since there are a few kinds of interpretation methods and the results are not quite precise. Aiming at the problems in result interpretation of TRT,such as the low combining degree of prediction criteria with actual geological conditions of test area and low prediction accuracy of disaster body′ s development degree and position, some corresponding improvement methods were proposed, namely the actual geological conditions of TRT test section were introduced to GOCAD to create a model and then the TRT 3D data were introduced to the model, realizing the interconnection between TRT test images and actual geological conditions. By adding varieties of color combination in the result image, the TRT result image can reflect both the disaster body and its development degree. A model was established by introducing tunnel coordinates and TRT test data to GOCAD, and the relative position relation between the disaster body and tunnel is understood, the precise prediction of development position and scale of disaster body was realized. Case application shows the improved TRT result interpretation method can greatly increase the accuracy and precision of TRT geological prediction.
2019, Vol. 56 