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Research progress in tunnel geological prediction

ZHAO Yonggui1,LIU Hao2,SUN Yu2,XIAO Kuanhuai3 (1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2. New Aerial Technology Company, Kunming 650217, China; 3. No.1 Prospecting and Designing Institute, the Ministry of Railway, Lanzhou 730000, China)  
Tunnel geological prediction is an important one of engineering geophysics subjects. The techniques used now including engineering geology examination, GPR, TSP and TRT are efficient in some cases, but they need improving in reliability aspects of object recognition, position and rock engineering classification.
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