ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2014, Vol. 34 ›› Issue (2): 124-128.DOI: 10.3973/j.issn.1672-741X.2014.02.006
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SHI Liu, LI Guangtao
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Abstract:
The calculation of the cost of shield boring in soft strata is mature, however, there is no unified cost calculation basis for shield boring across hard rocks. In the paper, four hardrockcrossing shield tunneling methods, i.e., shield boring directly across the hard rock, blasting before shield boring across blasted hard rock, mining and primary supporting before shield advancing without load and segment erecting, and mining, primary supporting and secondary lining before shield advancing without load, are compared technically and economically. In the end, optimum solutions are proposed for specific conditions.
Key words: Metro, shieldbored tunnel, hard rock section, cost
SHI Liu, LI Guangtao. Analysis on Cost of Shield Boring across Hard Rocks[J]. Tunnel Construction, 2014, 34(2): 124-128.
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URL: http://www.suidaojs.com/EN/10.3973/j.issn.1672-741X.2014.02.006
http://www.suidaojs.com/EN/Y2014/V34/I2/124
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