ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2015, Vol. 35 ›› Issue (12): 1361-1368.DOI: 10.3973/j.issn.1672-741X.2015.12.020
Previous Articles
DIAO Zhenxing1,2, XUE Yadong1,2, WANG Jianwei3
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Abstract:
The purpose of the paper is to analyze the main factors that affect TBM availability. In the paper, the characteristics of the surrounding rock and the 2 100 mlong boring record of Lingbei tunnel of Hanjiang RiverWeihe River Water Conveyance Project are analyzed, the factors causing the abnormal downtime of TBM are determined, the fault tree model for the abnormal downtime of TBM is established. The results show that the mucking system failure, support equipment failure, cutter head and cutter failure and electric power failure are the main factors leading to the low availability of TBM. The correlation between TBM availability in fractured rock mass conditions and Field Penetration Index (FPI) is analyzed. The results show that there is no obvious correlation between TBM availability and FPI, while the mucking system failure, support equipment failure and cutter head and cutter failure have strong correlation with FPI. The main causes for the failures are analyzed and countermeasures in terms of equipment management and construction management are proposed.
Key words: Hanjiang RiverWeihe River water conveyance project, water conveyance tunnel, TBM availability, fault tree, FPI (Field Penetration Index), correlation analysis
CLC Number:
U 45
DIAO Zhenxing, XUE Yadong, WANG Jianwei. Analysis on TBM Availability in Construction of Lingbei Tunnel of Hanjiang RiverWeihe River Water Conveyance Project[J]. Tunnel Construction, 2015, 35(12): 1361-1368.
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URL: http://www.suidaojs.com/EN/10.3973/j.issn.1672-741X.2015.12.020
http://www.suidaojs.com/EN/Y2015/V35/I12/1361