Evaluation of the geological condition ahead of the tunnel face by geostatistical techniques using TBM driving data |
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| Affiliation: | 1. Department of Civil Engineering, Kajima Technical Research Institute, Tokyo 182-0036, Japan;2. Graduate school of Engineering, Kyoto University, Kyoto 606-8501, Japan;1. School of Civil, Environmental and Architectural Engineering, Korea University, Republic of Korea;2. Korea Expressway Corporation Research Institute, Disaster & Safety Research Division, Republic of Korea;1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, PR China;2. Key Laboratory of Safety for Geotechnical and Structural Engineering of Hubei Province, School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, PR China;3. University of Chinese Academy of Sciences, Beijing 100049, PR China;4. State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou, Henan 450001, PR China;1. Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China;2. CNNC Beijing Research Institute of Uranium Geology, Beijing 100029, China;3. Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia;1. Geotechnical and Structural Engineering Research Center, Shandong University, Shandong, China;2. School of Qilu Transportation, Shandong University, Shandong, China;3. Business School of Shandong Jianzhu University, Shandong, China;4. China Railway Engineering Equipment Group, Henan, China;5. Department of Mathematics, The Chinese University of Hong Kong, Hong Kong, China;1. Pamukkale University, Engineering Faculty, Geological Engineering Department, Denizli, Turkey;2. Pamukkale University, Engineering Faculty, Civil Engineering Department, Denizli, Turkey |
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| Abstract: | In tunnel excavation by Tunnel Boring Machine (TBM), it is difficult to grasp the ground condition ahead of and surrounding the tunnel face because the face cannot be observed during tunnel driving. This is the reason why it has not been possible to make the best use of high-speed excavation capability of the TBM, especially in ground under complex conditions. Thus, the TBM Excavation Control System was developed to realize the accurate prediction of the geological condition ahead of and surrounding the tunnel face simultaneously with excavation. The special feature of this system is that geostatistical techniques are introduced into the data analysis using both drill logging data from pilot boring and TBM driving data obtained during excavation, in order to improve the precision of the ground mapping. |
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