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《应用地球物理(英文版)》 2006-02
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Tunnel seismic tomography method for geological prediction and its application

Zhao Yonggui1, Jiang Hui1, and Zhao Xiaopeng11. Institute of Geology and Geophysics, Chinese Academy of Sciences.  
Typical existing methods of tunnel geological prediction include negative apparent velocity, horizontal seismic profile, and the Tunnel Seismic Prediction (TSP) method as this technology is under development at home and abroad. Considering simpler observational methods and data processing, it is hard to accurately determine the seismic velocity of the wall rock in the front of the tunnel face. Therefore, applying these defective methods may result in inaccurate geological inferences which will not provide sufficient evidence for classifying the wall rock characteristics. This paper proposes the Tunnel Seismic Tomography (TST) method using a spatial observation arrangement and migration and travel time inversion image processing to solve the problem of analyzing the velocity structure of wall rock in the front of the tunnel face and realize accurate imaging of the geological framework of the tunnel wall rock. This method is very appropriate for geological prediction under complex geological conditions.
【CateGory Index】: P631.4
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