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Full-scale linear cutting test in Chongqing Sandstone and the comparison with field TBM excavation performance |
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| Authors: | Pan Yucong Liu Quansheng Kong Xiaoxuan Liu Jianping Peng Xingxin Liu Qi |
| Institution: | 1.Key Laboratory of Safety for Geotechnical and Structural Engineering of Hubei Province, School of Civil Engineering, Wuhan University, Wuhan, 430072, Hubei, People’s Republic of China ;2.College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya’an, 625014, Sichuan, People’s Republic of China ;3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, Hubei, People’s Republic of China ;4.University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China ; |
| Abstract: | In this study, determination of some machine parameters and performance prediction for tunnel boring machine (TBM) are conducted based on laboratory rock cutting test. Firstly, laboratory full-scale linear cutting test is carried out using 432-mm CCS (constant cross section) disc cutter in Chongqing Sandstone. Then, the input parameters for TBM cutterhead design are extracted; some TBM specifications are determined and then compared to the manufactured values. Finally, laboratory full-scale linear cutting test results are compared with the field TBM excavation performance data collected in Chongqing Yangtze River Tunnel. Results show that laboratory full-scale linear cutting test results, combined with some engineering considerations, can be used for the preliminary and rough design of TBM machine capacity. Meanwhile, combined with some modification factors, it can also well predict the field TBM excavation performance. |
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