Title: Risk identification of subway tunnel shield construction based on WBS-RBS method

Authors: Qiang You; Zhiwei Zhang; Haitao Wang; Mingyang Xu

Addresses: China Railway No. 14 Group Corporation Tunnel Engineering Co. Ltd., Jinan Shandong 250002, China ' China Railway No. 14 Group Corporation Tunnel Engineering Co. Ltd., Jinan Shandong 250002, China ' Tunnel Engineering and Disaster Prevention and Control Professional Technology Innovation Center, Liaoning Province, Dalian Jiaotong University, Dalian Liaoning 116028, China ' Tunnel Engineering and Disaster Prevention and Control Professional Technology Innovation Center, Liaoning Province, Dalian Jiaotong University, Dalian Liaoning 116028, China

Abstract: The shield construction technology has been widely used with the vigorous development of subway construction. The safety risk identification about the shield tunnelling construction of Shenzhen Metro was carried out. Firstly, the work breakdown structure (WBS) was used to decompose the construction process in stages, then the risk factors were decomposed into different factor units by risk breakdown structure (RBS), then the WBS-RBS matrix was constructed to identify a number of risk factors. Meanwhile, based on the questionnaire survey method, the reliability and validity of the results were tested. Finally, the principal component analysis method was used to extract the key risk factors, so that the number of indicators was greatly reduced, which provided a basis for constructing the risk evaluation index system.

Keywords: shield tunnelling construction; risk identification; WBS-RBS; principal component analysis.

DOI: 10.1504/IJCIS.2023.130915

International Journal of Critical Infrastructures, 2023 Vol.19 No.3, pp.261 - 273

Received: 09 Feb 2021
Accepted: 10 Jun 2021
Published online: 14 May 2023 *

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