Journal
ACTA GEOTECHNICA
Volume 14, Issue 4, Pages 1249-1268Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11440-018-0702-1
Keywords
Cutterhead design; Disc cutter; Excavation performance; Linear cutting machine (LCM); Mechanical rock breakage; Tunnel boring machine (TBM)
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Funding
- National Key Basic Research Program of China [2015CB058102, 2014CB046904]
- China Postdoctoral Science Foundation [2017M622515]
- National Natural Science Foundation of China [41602326, 41702254]
- National Funded Program for Graduate Students Studying Abroad of China Scholarship Council [201506270068]
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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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