Open AccessAnalysis on Security Risks in Tunnel Construction Based on the Fault Tree Analysis
Author(s) -
Ru Yang,
Deng You-sheng
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/638/1/012089
Subject(s) - fault tree analysis , excavation , security controls , safety factor , risk analysis (engineering) , tunnel construction , risk control , quality (philosophy) , engineering , civil engineering , control (management) , risk management , geotechnical engineering , computer science , reliability engineering , business , philosophy , finance , epistemology , artificial intelligence
Since tunnel engineering, as a kind of underground construction, has huge security risks, it is very important to evaluate the safety risk of tunnel construction stage. It cannot only provide basis for risk control but ensure construction safety. Taking Qingpingchuan tunnel as an example, the WBS-RBS method is employed to identify the construction risk of the tunnel and the identified risk sources are used to analyzed qualitatively and quantitatively with fault tree theory. Finally, we can conclude that the critical factor affecting the collapse of Qingpingchuan tunnel is the instability of surrounding rock, and that the secondary critical factor lies in the inconsistence of the soil quality with the survey documents, low effect of waterproof and drainage facilities, weak strength of pre reinforcement, excessive steps of excavation cycle, unqualified support construction, inaccurate advanced geological prediction, etc.