Proceedings of the
8th International Symposium on Geotechnical Safety and Risk (ISGSR)
14 – 16 December 2022, Newcastle, Australia
Editors: Jinsong Huang, D.V. Griffiths, Shui-Hua Jiang, Anna Giacomini, Richard Kelly
doi:10.3850/978-981-18-5182-7_20-010-cd
Structural Risk Evaluation Model of Water-Conveyance Tunnel Based on Fuzzy Hierarchical Synthesis Method
1Guangdong Yuehai Pearl River Delta Water Supply Co., Ltd., Guangdong, China.
2Key Laboratory of Geotechnical and Underground Engineering (Tongji University), Ministry of Education, Shanghai 200092, China.
3Department of Geotechnical Engineering College of Civil Engineering, Tongji University, Shanghai 200092, China.
ABSTRACT
For underwater water-conveyance tunnels during the operation period, the tunnel may be subject to structural risks due to geological conditions, water level changes and other uncertainties. The research was carried out to evaluate the structural risk level of water-conveyance tunnel and reduce the possibility of accidents. The influencing factors and evaluation indexes of were determined through literature research. Based on the expert's scoring, the analytic hierarchy process (AHP) method is applied to obtain the index weight, and then the basic probability level of structural risk of the underwater water-conveyance tunnels is determined by the fuzzy comprehensive evaluation method. The established risk level evaluation method is applied to Pearl River Delta Underwater Tunnel. The evaluation result is accordance with the practical conditions, which verifies the reliable and practical of the method. The study provides a reference method for the structural risk evaluation of underwater water-conveyance tunnel.
Keywords: Risk evaluation, Water-conveyance tunnel, AHP, Fuzzy comprehensive evaluation
